TriObject Class Reference

#include <triobj.h>

Class Description

See also

Class GeomObject, Class ClassDesc, Class Mesh, Class TessApprox.

Description:

This class represents a renderable, deformable, triangle mesh object. All procedural objects must be able to convert themselves to TriObjects. This class provides implementations of all the required methods of Animatable, ReferenceMaker, ReferenceTarget, BaseObject, Object, and GeomObject. All methods of this class are implemented by the system.

Data Members:

Mesh mesh;

This is the mesh of the TriObject. See Class Mesh for methods to manipulate this mesh.

The following data members are used by the Displacement Mapping mechanism in 3ds Max.

TessApprox mDispApprox;

The object which describes the properties of the tesselation approximation of the mesh.

bool mSubDivideDisplacement;

The subdivision displacement flag. When TRUE, displacement mapping mechanism subdivides mesh faces to accurately displace the map, using the method and settings you specify in the Subdivision Presets and Subdivision Method group boxes. When FALSE, the modifier applies the map by moving vertices in the mesh, the way the Displace modifier does.

bool mDisableDisplacement;

TRUE to disable displacement mapping; FALSE to enable it.

bool mSplitMesh;

The split mesh flag. This flag affects texture mapping as done by the displacement mapping mechanism. When on, the modifier splits the mesh into individual faces before displacing them: this helps preserve texture mapping. When off, the modifier uses an internal method to assign texture mapping. Default=On.

Inheritance diagram for TriObject:

Public Member Functions
CoreExport	TriObject ()
CoreExport	~TriObject ()
virtual CoreExport bool	PrepareDisplay (const MaxSDK::Graphics::UpdateDisplayContext &prepareDisplayContext)
virtual CoreExport bool	UpdatePerNodeItems (const MaxSDK::Graphics::UpdateDisplayContext &updateDisplayContext, MaxSDK::Graphics::UpdateNodeContext &nodeContext, MaxSDK::Graphics::IRenderItemContainer &targetRenderItemContainer)
CoreExport unsigned long	GetObjectDisplayRequirement () const
virtual CoreExport BaseInterface *	GetInterface (Interface_ID iid)
	Inherited from Animatable. More...
CoreExport void *	GetInterface (ULONG id)
	Inherited from Animatable. More...
CoreExport void	ReleaseInterface (ULONG id, void *i)
CoreExport int	HitTest (TimeValue t, INode *inode, int type, int crossing, int flags, IPoint2 *p, ViewExp *vpt)
	This method is called to determine if the specified screen point intersects the item. More...
CoreExport int	Display (TimeValue t, INode *inode, ViewExp *vpt, int flags)
	This is called by the system to have the item display itself (perform a quick render in viewport, using the current TM). More...
CoreExport void	Snap (TimeValue t, INode *inode, SnapInfo *snap, IPoint2 *p, ViewExp *vpt)
	Checks the point passed for a snap and updates the SnapInfo structure. More...
CoreExport CreateMouseCallBack *	GetCreateMouseCallBack ()
	This method allows the system to retrieve a callback object used in creating an object in the 3D viewports. More...
CoreExport RefTargetHandle	Clone (RemapDir &remap)
	This method is used by 3ds Max to clone an object. More...
CoreExport ObjectState	Eval (TimeValue time)
	This method is called to evaluate the object and return the result as an ObjectState. More...
CoreExport Interval	ObjectValidity (TimeValue t)
	This method returns the validity interval of the object as a whole at the specified time. More...
CoreExport BOOL	HasUVW ()
	Call this method to find out if the object has UVW coordinates. More...
CoreExport BOOL	HasUVW (int mapChannel)
	Call this method to find out if the object is has UVW coordinates for the specified mapping channel. More...
CoreExport Interval	ChannelValidity (TimeValue t, int nchan)
	Retrieve the current validity interval for the nchan channel of the object. More...
CoreExport void	SetChannelValidity (int i, Interval v)
	Sets the validity interval of the specified channel. More...
CoreExport void	InvalidateChannels (ChannelMask channels)
	This method invalidates the intervals for the given channel mask. More...
CoreExport Interval	ConvertValidity (TimeValue t)
int	IsDeformable ()
	Indicates whether this object is deformable. More...
int	NumPoints ()
	The points of a deformable object are accessed through a virtual array interface. More...
Point3	GetPoint (int i)
	The points of a deformable object are accessed through a virtual array interface. More...
void	SetPoint (int i, const Point3 &p)
	The points of a deformable object are accessed through a virtual array interface. More...
CoreExport BOOL	IsPointSelected (int i)
	Returns TRUE if the 'i-th' point is selected; otherwise FALSE. More...
CoreExport float	PointSelection (int i)
	Returns a floating point weighted point selection if the object supports it. More...
int	IsMappable ()
	This method lets you know if the ApplyUVWMap() method is available for this object. More...
int	NumMapChannels ()
	Returns the maximum number of channels supported by this type of object. More...
int	NumMapsUsed ()
	Returns the number of maps currently used by this object. More...
void	ApplyUVWMap (int type, float utile, float vtile, float wtile, int uflip, int vflip, int wflip, int cap, const Matrix3 &tm, int channel=1)
	This method may be called to map the object with UVW mapping coordinates. More...
CoreExport BOOL	PolygonCount (TimeValue t, int &numFaces, int &numVerts)
	Retreives the number of faces and vertices of the polyginal mesh representation of this object. More...
void	PointsWereChanged ()
	Informs the object that its points have been deformed, so it can invalidate its cache. More...
CoreExport void	GetDeformBBox (TimeValue t, Box3 &box, Matrix3 *tm=NULL, BOOL useSel=FALSE)
	This method computes the bounding box in the objects local coordinates or the optional space defined by tm. More...
CoreExport void	Deform (Deformer *defProc, int useSel)
	This is the method used to deform the object with a deformer. More...
CoreExport int	CanConvertToType (Class_ID obtype)
	Indicates whether the object can be converted to the specified type. More...
CoreExport Object *	ConvertToType (TimeValue t, Class_ID obtype)
	This method converts this object to the type specified and returns a pointer it. More...
CoreExport void	FreeChannels (ChannelMask chan)
	This method deletes the memory associated with the specified channels and set the intervals associated with the channels to invalid (empty). More...
CoreExport Object *	MakeShallowCopy (ChannelMask channels)
	This method must make a copy of its "shell" and then shallow copy (see below) only the specified channels. More...
CoreExport void	ShallowCopy (Object *fromOb, ChannelMask channels)
	This method copies the specified channels from the fromOb to this and copies the validity intervals. More...
CoreExport void	NewAndCopyChannels (ChannelMask channels)
	This method replaces the locked channels with newly allocated copies. More...
CoreExport DWORD	GetSubselState ()
	For objects that have sub selection levels, this method returns the current selection level of the object. More...
CoreExport void	SetSubSelState (DWORD s)
CoreExport BOOL	CheckObjectIntegrity ()
	This method is used for debugging only. More...
CoreExport int	IntersectRay (TimeValue t, Ray &ray, float &at, Point3 &norm)
	This method is called to compute the intersection point and surface normal at this intersection point of the ray passed and the object. More...
CoreExport ObjectHandle	CreateTriObjRep (TimeValue t)
CoreExport void	GetWorldBoundBox (TimeValue t, INode *inode, ViewExp *vpt, Box3 &box)
	This method returns the world space bounding box for Objects (see below for the Sub-object gizmo or Modifiers gizmo version). More...
CoreExport void	GetLocalBoundBox (TimeValue t, INode *inode, ViewExp *vpt, Box3 &box)
	This is the object space bounding box, the box in the object's local coordinates. More...
CoreExport Mesh *	GetRenderMesh (TimeValue t, INode *inode, View &view, BOOL &needDelete)
	This method should be implemented by all renderable GeomObjects. More...
CoreExport BOOL	CanDoDisplacementMapping ()
	Returns TRUE if this object can do displacement mapping; otherwise FALSE. More...
CoreExport TessApprox &	DisplacmentApprox ()
CoreExport bool &	DoSubdivisionDisplacment ()
CoreExport bool &	SplitMeshForDisplacement ()
CoreExport void	SetDisplacmentApproxToPreset (int preset)
CoreExport void	DisableDisplacementMapping (BOOL disable)
CoreExport void	TopologyChanged ()
Mesh &	GetMesh ()
CoreExport void	DeleteThis ()
	Deletes an instance of this class. More...
void	FreeCaches ()
Class_ID	ClassID ()
	Retrieves a constant that uniquely identifies the plugin class. More...
void	GetClassName (MSTR &s)
	Retrieves the (localizable) name of the plugin class. More...
void	NotifyMe (Animatable *subAnim, int message)
int	IsKeyable ()
int	Update (TimeValue t)
const MCHAR *	GetObjectName ()
CoreExport void	RescaleWorldUnits (float f)
	Rescale size of all world units in reference hierarchy. More...
CoreExport IOResult	Save (ISave *isave)
	Called for saving data. More...
CoreExport IOResult	Load (ILoad *iload)
	Called for loading data. More...
CoreExport void	ReduceDisplayCaches ()
	Should reduce any derived display data to save memory, since the node wont be drawn until the user undhides it. More...
CoreExport bool	NeedGWCacheRebuilt (GraphicsWindow *gw, Material *ma, int numMat)
	This returns whether the Graphics Cache for this object needs to be rebuilt. More...
CoreExport void	BuildGWCache (GraphicsWindow *gw, Material *ma, int numMat, BOOL threaded)
	This builds the graphics window cached mesh. More...
Public Member Functions inherited from GeomObject
virtual void	InitNodeName (MSTR &s)
	This is the default name of the node when it is created. More...
SClass_ID	SuperClassID ()
	Retrieves a constant representing the type of the plugin. More...
virtual int	IsRenderable ()
	Indicates whether the object may be rendered. More...
virtual int	IsInstanceDependent ()
	If an object creates different meshes depending on the particular instance (view-dependent) it should return nonzero; otherwise 0. More...
virtual int	NumberOfRenderMeshes ()
	Objects may supply multiple render meshes ( e.g. More...
virtual Mesh *	GetMultipleRenderMesh (TimeValue t, INode *inode, View &view, BOOL &needDelete, int meshNumber)
	For multiple render meshes, this method must be implemented. More...
virtual void	GetMultipleRenderMeshTM (TimeValue t, INode *inode, View &view, int meshNumber, Matrix3 &meshTM, Interval &meshTMValid)
	For multiple render meshes, this method must be implemented. More...
virtual CoreExport PatchMesh *	GetRenderPatchMesh (TimeValue t, INode *inode, View &view, BOOL &needDelete)
	This method provides a patch mesh representation of the object for use by the renderer. More...
CoreExport Class_ID	PreferredCollapseType ()
	This method allows objects to specify the class that is the best class to convert to when the user collapses the stack. More...
Public Member Functions inherited from Object
CoreExport	Object ()
CoreExport	~Object ()
virtual int	UsesWireColor ()
	This method determines if the object color is used for display. More...
virtual int	DoOwnSelectHilite ()
	If an object wants to draw itself in the 3D viewports in its selected state in some custom manner this method should return nonzero. More...
virtual BOOL	NormalAlignVector (TimeValue t, Point3 &pt, Point3 &norm)
	Objects that don't support the IntersectRay() method (such as helper objects) can implement this method to provide a default vector for use with the normal align command in 3ds Max. More...
void	LockObject ()
	Implemented by the System. More...
void	UnlockObject ()
	Implemented by the System. More...
int	IsObjectLocked ()
	Implemented by the System. More...
void	LockChannels (ChannelMask channels)
	Implemented by the System. More...
void	UnlockChannels (ChannelMask channels)
	Implemented by the System. More...
ChannelMask	GetChannelLocks ()
	Implemented by the System. More...
void	SetChannelLocks (ChannelMask channels)
	Implemented by the System. More...
ChannelMask	GetChannelLocks (ChannelMask m)
	Implemented by the System. More...
virtual BOOL	CanCacheObject ()
	This method determines if this object can have channels cached. More...
virtual void	WSStateInvalidate ()
	This is called by a node when the node's world space state has become invalid. More...
virtual BOOL	IsWorldSpaceObject ()
	Returns TRUE if the object as a world space object; otherwise FALSE. More...
CoreExport INode *	GetWorldSpaceObjectNode ()
virtual BOOL	IsParticleSystem ()
CoreExport void	CopyChannelLocks (Object *obj, ChannelMask needChannels)
	Implemented by the System. More...
virtual BOOL	HasWeights ()
	Returns TRUE if the object has weights for its points that can be set; otherwise FALSE. More...
virtual double	GetWeight (int i)
	Returns the weight of the specified point of the object. More...
virtual void	SetWeight (int i, const double w)
	Sets the weight of the specified point. More...
virtual CoreExport void	GetCollapseTypes (Tab< Class_ID > &clist, Tab< MSTR * > &nlist)
	When the user clicks on the Edit Stack button in the modify branch a list of 'Convert To:' types is presented. More...
virtual Object *	CollapseObject ()
	This method is called on the world space cache object when the stack gets collapsed, that lets the pipeline object decide, if it wants to return a different object than itself. More...
CoreExport void	ReadyChannelsForMod (ChannelMask channels)
	Implemented by the System. More...
virtual CoreExport void	MaybeEnlargeViewportRect (GraphicsWindow *gw, Rect &rect)
	This method allows the object to enlarge its viewport rectangle, if it wants to. More...
CoreExport bool	IsBaseClassOwnedChannel (int nchan)
CoreExport void	UpdateValidity (int nchan, Interval v)
	When a modifier is applied to an object, it needs to include its own validity interval in the interval of the object. More...
Interval	GetNoEvalInterval ()
void	SetNoEvalInterval (Interval iv)
virtual CoreExport void	ReduceCaches (TimeValue t)
	This method give the object the chance to reduce its caches. More...
virtual int	IsConstObject ()
	This is called to determine if this is a construction object or not. More...
virtual int	NumPipeBranches (bool selected=true)
	This method returns the number of pipeline branches combined by the object. More...
virtual Object *	GetPipeBranch (int i, bool selected=true)
	Retrieves sub-object branches from an object that supports branching. More...
virtual INode *	GetBranchINode (TimeValue t, INode *node, int i, bool selected=true)
	When an object has sub-object branches, it is likely that the sub-objects are transformed relative to the object. More...
virtual int	NumberOfContainedShapes ()
	Returns the number of shapes contained inside this object. More...
virtual ShapeObject *	GetContainedShape (TimeValue t, int index)
	This method returns the ShapeObject specified by the index passed at the time specified. More...
virtual void	GetContainedShapeMatrix (TimeValue t, int index, Matrix3 &mat)
	Returns the matrix associated with the shape whose index is passed. More...
virtual BitArray	ContainedShapeSelectionArray ()
	This is used by the lofter. More...
virtual BOOL	IsShapeObject ()
virtual Object *	FindBaseObject ()
	It is called to return a pointer to the base object (an object that is not a derived object). More...
virtual BOOL	IsParamSurface ()
	There are several methods used to access a parametric position on the surface of the object. More...
virtual int	NumSurfaces (TimeValue t)
	Returns the number of parametric surfaces within the object. More...
virtual Point3	GetSurfacePoint (TimeValue t, float u, float v, Interval &iv)
	This method needs to be implemented if Object::IsParamSurface() returns TRUE. More...
virtual Point3	GetSurfacePoint (TimeValue t, int surface, float u, float v, Interval &iv)
	This method is used to retrieve a point on the specified surface of the object based on two parameters of the surface, u and v. More...
virtual void	SurfaceClosed (TimeValue t, int surface, BOOL &uClosed, BOOL &vClosed)
	This method allows the object to return flags that indicate whether the parametric surface is closed in the U and V dimensions. More...
virtual BOOL	GetExtendedProperties (TimeValue t, MSTR &prop1Label, MSTR &prop1Data, MSTR &prop2Label, MSTR &prop2Data)
	This method allows an object to return extended Properties fields. More...
CoreExport SvGraphNodeReference	SvTraverseAnimGraph (IGraphObjectManager *gom, Animatable *owner, int id, DWORD flags)
CoreExport bool	SvHandleDoubleClick (IGraphObjectManager *gom, IGraphNode *gNode)
CoreExport MSTR	SvGetName (IGraphObjectManager *gom, IGraphNode *gNode, bool isBeingEdited)
CoreExport COLORREF	SvHighlightColor (IGraphObjectManager *gom, IGraphNode *gNode)
CoreExport bool	SvIsSelected (IGraphObjectManager *gom, IGraphNode *gNode)
	Returns true if the object is selected in its schematic view. More...
CoreExport MultiSelectCallback *	SvGetMultiSelectCallback (IGraphObjectManager *gom, IGraphNode *gNode)
CoreExport bool	SvCanSelect (IGraphObjectManager *gom, IGraphNode *gNode)
CoreExport void	AddXTCObject (XTCObject *pObj, int priority=0, int branchID=-1)
	This method adds an extension object into the pipeline. More...
CoreExport int	NumXTCObjects ()
	Returns the number of extension objects maintained by this Object. More...
CoreExport XTCObject *	GetXTCObject (int index)
	Returns a pointer to the specified extension object. More...
CoreExport void	RemoveXTCObject (int index)
	Removes the extension object as indicated by the index. More...
CoreExport void	SetXTCObjectPriority (int index, int priority)
	Sets the priority for the extension object whose index is passed. More...
CoreExport int	GetXTCObjectPriority (int index)
	Returns the integer priority number of the extension object whose index is passed. More...
CoreExport void	SetXTCObjectBranchID (int index, int branchID)
	Sets the branch ID of the extension object whose index is passed. More...
CoreExport int	GetXTCObjectBranchID (int index)
	Returns the integer branch ID of the extension object whose index is passed. More...
CoreExport void	MergeAdditionalChannels (Object *from, int branchID)
	This method has to be called whenever the CompoundObject updates a branch (calling Eval() on it). More...
CoreExport void	BranchDeleted (int branchID, bool reorderChannels)
	This method has to be called on the CompoundObject so it can delete the XTCObjects for the specified branch. More...
CoreExport void	CopyAdditionalChannels (Object *from, bool deleteOld=true, bool bShallowCopy=false)
	This method copies all extension objects from the "from" object into the current object. More...
CoreExport void	DeleteAllAdditionalChannels ()
	Implemented by the System. More...
virtual BOOL	UseSelectionBrackets ()
	This method allows an object to choose whether or not it will display selection brackets in shaded viewports. More...
virtual BOOL	IsManipulator ()
Public Member Functions inherited from BaseObject
virtual CoreExport bool	UpdatePerViewItems (const MaxSDK::Graphics::UpdateDisplayContext &updateDisplayContext, MaxSDK::Graphics::UpdateNodeContext &nodeContext, MaxSDK::Graphics::UpdateViewContext &viewContext, MaxSDK::Graphics::IRenderItemContainer &targetRenderItemContainer)
virtual CoreExport const MaxSDK::Graphics::RenderItemHandleArray &	GetRenderItems () const
CoreExport	BaseObject ()
virtual CoreExport	~BaseObject ()
virtual BOOL	HasViewDependentBoundingBox ()
	This method return true if GetWorldBoundBox returns different boxes for different viewports. More...
virtual void	SetExtendedDisplay (int flags)
	This method is used for storing mode-dependent display attributes. More...
virtual CoreExport BOOL	OKToChangeTopology (MSTR &modName)
	Implemented by the System. More...
virtual BOOL	ChangeTopology ()
	This method asks the question of an object or modifier "Do you change topology"? An object or modifier returns TRUE if it is capable of changing topology when its parameters are being edited; otherwise FALSE. More...
virtual void	ForceNotify (Interval &i)
	Notifies dependents of a change. More...
virtual IParamArray *	GetParamBlock ()
	An object or modifier should implement this method if it wishes to make its parameter block available for other plug-ins to access it. More...
virtual int	GetParamBlockIndex (int id)
	If a plug-in makes its parameter block available (using GetParamBlock()) then it will need to provide #defines for indices into the parameter block. More...
virtual void	Move (TimeValue t, Matrix3 &partm, Matrix3 &tmAxis, Point3 &val, BOOL localOrigin=FALSE)
	When this method is called the plug-in should respond by moving its selected sub-object components. More...
virtual void	Rotate (TimeValue t, Matrix3 &partm, Matrix3 &tmAxis, Quat &val, BOOL localOrigin=FALSE)
	When this method is called the plug-in should respond by rotating its selected sub-object components. More...
virtual void	Scale (TimeValue t, Matrix3 &partm, Matrix3 &tmAxis, Point3 &val, BOOL localOrigin=FALSE)
	When this method is called the plug-in should respond by scaling its selected sub-object components. More...
virtual void	TransformStart (TimeValue t)
	This method is called before the first Move(), Rotate() or Scale() call and before a hold is in effect. More...
virtual void	TransformHoldingStart (TimeValue t)
	This method is called before the first Move(), Rotate() or Scale() call and after a hold is in effect. More...
virtual void	TransformHoldingFinish (TimeValue t)
	This method is called after the user has completed the Move(), Rotate() or Scale() operation and before the undo object has been accepted. More...
virtual void	TransformFinish (TimeValue t)
	This method is called after the user has completed the Move(), Rotate() or Scale() operation and the undo object has been accepted. More...
virtual void	TransformCancel (TimeValue t)
	This method is called when the transform operation is canceled by a right-click and the undo has been canceled. More...
virtual int	HitTest (TimeValue t, INode *inode, int type, int crossing, int flags, IPoint2 *p, ViewExp *vpt, ModContext *mc)
	This method is used in modifier gizmo hit testing. More...
virtual int	Display (TimeValue t, INode *inode, ViewExp *vpt, int flags, ModContext *mc)
	When this method is called the plug-in should respond by performing a quick render of the modifier gizmo in viewport using the current TM. More...
virtual void	GetWorldBoundBox (TimeValue t, INode *inode, ViewExp *vpt, Box3 &box, ModContext *mc)
	This method computes the world space bounding box of the modifier gizmo (or any object that when in sub-object mode has a gizmo). More...
virtual void	CloneSelSubComponents (TimeValue t)
	This method is called to make a copy of the selected sub-object components of the item. More...
virtual void	AcceptCloneSelSubComponents (TimeValue t)
	This method is called when the user mouses up after shift-cloning a sub-object selection. More...
virtual void	SelectSubComponent (HitRecord *hitRec, BOOL selected, BOOL all, BOOL invert=FALSE)
	This method is called to change the selection state of the component identified by hitRec. More...
virtual void	ClearSelection (int selLevel)
	This method is called to clear the selection for the given sub-object level. More...
virtual void	SelectAll (int selLevel)
	This method is called to select every element of the given sub-object level. More...
virtual void	InvertSelection (int selLevel)
	This method is called to invert the specified sub-object level. More...
virtual int	SubObjectIndex (HitRecord *hitRec)
	Returns the index of the sub-object element identified by the HitRecord hitRec. More...
virtual void	ActivateSubobjSel (int level, XFormModes &modes)
	When the user changes the selection of the sub-object drop down, this method is called to notify the plug-in. More...
virtual BOOL	SupportsNamedSubSels ()
	An object that supports sub-object selection can choose to support named sub object selection sets. More...
virtual void	ActivateSubSelSet (MSTR &setName)
	When the user chooses a name from the drop down list this method is called. More...
virtual void	NewSetFromCurSel (MSTR &setName)
	If the user types a new name into the named selection set drop down then this method is called. More...
virtual void	RemoveSubSelSet (MSTR &setName)
	If the user selects a set from the drop down and then chooses Remove Named Selections from the Edit menu this method is called. More...
virtual void	SetupNamedSelDropDown ()
	To support the Edit Named Selections dialog, plug-ins must implement this method. More...
virtual int	NumNamedSelSets ()
	To support the Edit Named Selections dialog, plug-ins must implement this method. More...
virtual MSTR	GetNamedSelSetName (int i)
	To support the Edit Named Selections dialog, plug-ins must implement this method. More...
virtual void	SetNamedSelSetName (int i, MSTR &newName)
	To support the Edit Named Selections dialog, plug-ins must implement this method. More...
virtual void	NewSetByOperator (MSTR &newName, Tab< int > &sets, int op)
	To support the Edit Named Selections dialog, plug-ins must implement this method. More...
virtual void	GetSubObjectCenters (SubObjAxisCallback *cb, TimeValue t, INode *node, ModContext *mc)
	When the user is in a sub-object selection level, the system needs to get the reference coordinate system definition from the current modifier being edited so that it can display the axis. More...
virtual void	GetSubObjectTMs (SubObjAxisCallback *cb, TimeValue t, INode *node, ModContext *mc)
	When the user is in a sub-object selection level, the system needs to get the reference coordinate system definition from the current modifier being edited so that it can display the axis. More...
virtual void	NotifyPreCollapse (INode *node, IDerivedObject *derObj, int index)
	This method is called before a modifier or object is collapsed. More...
virtual void	NotifyPostCollapse (INode *node, Object *obj, IDerivedObject *derObj, int index)
	This method is called after a modifier or object is collapsed. More...
virtual int	NumSubObjTypes ()
	Objects and modifiers that support subobjects have to overwrite this method - as well as GetSubObjType() - and return a class derived from ISubObjType in GetSubObjType(). More...
virtual ISubObjType *	GetSubObjType (int i)
	Returns a pointer to the sub-object type for the sub-object whose index is passed. More...
virtual CoreExport int	GetSubObjectLevel ()
	This method returns an integer which indicates the current sub-object level of the modifier or base object. More...
virtual void	SetGenUVW (BOOL sw)
	This method is called to change the state of its Generate UVW boolean. More...
virtual void	SetGenUVW (int mapChannel, BOOL sw)
	This method is called to change the state of its Generate UVW boolean for the specified mapping channel. More...
virtual void	ShowEndResultChanged (BOOL showEndResult)
	This method notifies the BaseObject that the end result display has been switched (the "Show End Result" button has been toggled). More...
Public Member Functions inherited from ReferenceTarget
virtual BOOL	IsRefTarget ()
	Checks if this is a ReferenceTarget. More...
CoreExport RefResult	TestForLoop (const Interval &refInterval, RefMakerHandle hmaker)
	Tests for a cyclical reference. More...
CoreExport BOOL	HasDependents ()
	Checks if a ReferenceTarget has references. More...
CoreExport BOOL	HasRealDependents ()
	Checks if this has Real (Strong) Dependents. More...
void	BeginDependencyTest ()
	Starts Dependency Test. More...
BOOL	EndDependencyTest ()
	Ends Dependency Test. More...
virtual void	RefAdded (RefMakerHandle rm)
	Called after a reference is made to a target. More...
virtual void	RefAddedUndoRedo (RefMakerHandle rm)
	Called after a reference is made to a target because of undo or redo. More...
virtual void	RefDeleted ()
	Called after a references to this is deleted. More...
virtual void	RefDeletedUndoRedo ()
	Called after a references to this is deleted because of undo or redo. More...
CoreExport RefResult	DeleteAllRefsToMe ()
	Deletes all references to this ReferenceTarget. More...
CoreExport RefResult	TransferReferences (RefTargetHandle oldTarget, BOOL delOld=FALSE)
	Transfers all the references from oldTarget to this. More...
CoreExport int	DoEnumDependents (DependentEnumProc *dep)
	Begins an enumeration that searches back in the dependency network. More...
virtual CoreExport void	BaseClone (ReferenceTarget *from, ReferenceTarget *to, RemapDir &remap)
	This method copies base class data from an object to its clone. More...
virtual CoreExport RefResult	NotifyDependents (const Interval &changeInt, PartID partID, RefMessage message, SClass_ID sclass=NOTIFY_ALL, BOOL propagate=TRUE, RefTargetHandle hTarg=NULL, NotifyDependentsOption notifyDependentsOption=REFNOTIFY_ALLOW_OPTIMIZATIONS)
	Notify all dependent RefMakers concerned with the message. More...
void	FlagDependents (TimeValue t, PartID which=PART_PUT_IN_FG)
	This sends the REFMSG_FLAGDEPENDENTS message up the pipeline. More...
virtual void	NotifyForeground (TimeValue t)
	This method is called to flag dependents into the FG. More...
virtual void	NotifyTarget (int message, ReferenceMaker *hMaker)
	Sends messages to ReferenceTargets. More...
CoreExport	ReferenceTarget ()
	Constructor. More...
virtual CoreExport RefResult	AutoDelete ()
	Deletes the object when it has no more real dependents. More...
CoreExport RefResult	MaybeAutoDelete ()
	Deletes the object when it has no more real dependents. More...
Public Member Functions inherited from ReferenceMaker
CoreExport RefResult	ReplaceReference (int which, RefTargetHandle newtarg, BOOL delOld=TRUE)
	Used when cloning reference makers. More...
CoreExport RefResult	DeleteAllRefsFromMe ()
	Deletes all references from this ReferenceMaker. More...
CoreExport RefResult	DeleteAllRefs ()
	Deletes all references both to and from this item. More...
CoreExport RefResult	DeleteReference (int i)
	Deletes the specified reference. More...
virtual BOOL	CanTransferReference (int i)
	Tells whether this reference can be transfered. More...
CoreExport ReferenceSaveManager &	GetReferenceSaveManager ()
	Access the ReferenceSaveManager of this ReferenceMaker. More...
virtual int	RemapRefOnLoad (int iref)
	Used to load old files with references. More...
virtual CoreExport void	EnumAuxFiles (AssetEnumCallback &assetEnum, DWORD flags)
	Enumerate auxiliary files (e.g. bitmaps) More...
virtual CoreExport void	SaveEnum (SaveEnumProc &sep, BOOL isNodeCall=0)
	The default save enumeration. More...
virtual CoreExport bool	SpecifySaveReferences (ReferenceSaveManager &referenceSaveManager)
	Used to specify reference slot remapping during scene file save. More...
CoreExport int	DoEnumDependents (DependentEnumProc *dep)
	Begins an enumeration that searches back in the dependency network. More...
CoreExport bool	EnumRefHierarchy (RefEnumProc &proc, bool includeCustAttribs=true, bool includeIndirectRefs=true, bool includeNonPersistentRefs=true, bool preventDuplicatesViaFlag=true)
	This method provides a general purpose reference enumerator. More...
CoreExport int	FindRef (RefTargetHandle rtarg)
	Get the index of the ReferenceTarget. More...
virtual BOOL	IsRefMaker ()
	Tells whether it is a ReferenceMaker. More...
virtual BOOL	IsRealDependency (ReferenceTarget *rtarg)
	Returns whether this is a "real" (strong) dependency or not. More...
virtual BOOL	ShouldPersistWeakRef (RefTargetHandle rtarg)
	Specifies whether a weak reference is to be persisted on a partial load or save. More...
CoreExport	ReferenceMaker ()
	Constructor. More...
CoreExport void	DeleteMe ()
	Deletes an instance of this class. More...
virtual CoreExport int	NumRefs ()
	Returns the total number of references this ReferenceMaker can hold. More...
virtual CoreExport RefTargetHandle	GetReference (int i)
	Returns the 'i-th' reference. More...
Public Member Functions inherited from Animatable
virtual int	NumChildren ()
virtual Animatable *	ChildAnim (int i)
virtual CoreExport MSTR	NodeName ()
virtual void	EditTrack ()
virtual CoreExport BOOL	SubAnimSetKeyBufferPresent (int subNum)
	returns true if the sub-anim has a "Set Key" buffer present More...
virtual BOOL	SetKeyBufferPresent ()
	returns true if there is a "Set Key" buffer present More...
virtual CoreExport void	SubAnimCommitSetKeyBuffer (TimeValue t, int subNum)
	Commit any "Set Key" buffers on the given sub-anim. More...
virtual void	CommitSetKeyBuffer (TimeValue t)
	Commit any "Set Key" buffers. More...
virtual CoreExport void	SubAnimRevertSetKeyBuffer (int subNum)
	Revert any "Set Key" buffers on the given sub-anim. More...
virtual void	RevertSetKeyBuffer ()
	Revert any "Set Key" buffers. More...
virtual LRESULT CALLBACK	TrackViewWinProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
	This function is obsolete. More...
virtual bool	IsParamBlockDesc2Used (ParamBlockDesc2 *desc)
	Returns true if the passed description is being used. More...
virtual bool	GetMacroRecorderName (bool used_as_rhs_value, MSTR &objectSpecifiedName)
	This method is called to access the object specified name to use for the Maxscript macrorecorder. More...
CoreExport	Animatable ()
	Constructor. More...
MSTR	ClassName () const
	Returns the name of the plugin class. More...
virtual void	BeginEditParams (IObjParam *ip, ULONG flags, Animatable *prev=NULL)
virtual void	EndEditParams (IObjParam *ip, ULONG flags, Animatable *next=NULL)
virtual CoreExport int	SetProperty (ULONG id, void *data)
virtual CoreExport void *	GetProperty (ULONG id)
CoreExport void	AppendProperty (AnimProperty *prop)
	A function to directly add arbitrary properties to this object developers should ensure that the properties ID does not conflict with any Max-specific IDs. More...
CoreExport AnimProperty *	FindProperty (DWORD id)
	Find any property. More...
CoreExport void	AddAppDataChunk (const Class_ID &cid, SClass_ID sid, DWORD sbid, DWORD len, void *data)
	Adds application/plugin specific (custom) data to an Animatable. More...
CoreExport AppDataChunk *	GetAppDataChunk (const Class_ID &cid, SClass_ID sid, DWORD sbid)
	Retrieves the application/plugin specific (custom) data stored with an Animatable. More...
CoreExport BOOL	RemoveAppDataChunk (const Class_ID &cid, SClass_ID sid, DWORD sbid)
	Deletes the application/plugin specific (custom) data stored with an Animatable. More...
CoreExport void	ClearAllAppData ()
	Deletes all application/plugin specific (custom) data stored with an Animatable. More...
virtual int	NumSubs ()
virtual Animatable *	SubAnim (int i)
virtual CoreExport MSTR	SubAnimName (int i)
virtual BOOL	CanDeleteSubAnim (int i)
virtual void	DeleteSubAnim (int i)
virtual DWORD	GetSubAnimCurveColor (int subNum)
virtual int	SubNumToRefNum (int subNum)
virtual BOOL	CanCopyAnim ()
CoreExport int	HasSubElements (int type=0)
virtual int	GetSubFCurveExtents (int subNum, ParamDimensionBase *dim, float &min, float &max, DWORD flags)
	The values max and min should be initialized before calling this function. More...
virtual ParamDimension *	GetParamDimension (int i)
virtual BOOL	SelectSubAnim (int subNum)
virtual BOOL	BypassTreeView ()
virtual BOOL	BypassTrackBar ()
virtual BOOL	BypassPropertyLevel ()
virtual BOOL	InvisibleProperty ()
virtual int	NumKeys ()
virtual TimeValue	GetKeyTime (int index)
virtual int	GetKeyIndex (TimeValue t)
virtual BOOL	GetNextKeyTime (TimeValue t, DWORD flags, TimeValue &nt)
virtual void	CopyKeysFromTime (TimeValue src, TimeValue dst, DWORD flags)
virtual void	DeleteKeyAtTime (TimeValue t)
virtual BOOL	IsKeyAtTime (TimeValue t, DWORD flags)
virtual int	GetKeyTimes (Tab< TimeValue > &times, Interval range, DWORD flags)
virtual int	GetKeySelState (BitArray &sel, Interval range, DWORD flags)
CoreExport void	OpenTreeEntry (int type, DWORD tv)
CoreExport void	CloseTreeEntry (int type, DWORD tv)
CoreExport int	IsTreeEntryOpen (int type, DWORD tv)
CoreExport BOOL	GetSelInTrackView (DWORD tv)
CoreExport void	SetSelInTrackView (DWORD tv, BOOL sel)
CoreExport BOOL	InTrackViewSelSet (int which)
CoreExport void	SetTrackViewSelSet (int which, BOOL inOut)
virtual BOOL	AssignController (Animatable *control, int subAnim)
virtual BOOL	CanAssignController (int subAnim)
	Return true if we can reassign the subanim specified. More...
virtual BOOL	CanMakeUnique ()
CoreExport int	EnumAnimTree (AnimEnum *animEnum, Animatable *client, int subNum)
virtual int	RenderBegin (TimeValue t, ULONG flags=0)
virtual int	RenderEnd (TimeValue t)
virtual CoreExport Interval	GetTimeRange (DWORD flags)
virtual void	EditTimeRange (Interval range, DWORD flags)
virtual void	DeleteTime (Interval iv, DWORD flags)
virtual void	ReverseTime (Interval iv, DWORD flags)
virtual void	ScaleTime (Interval iv, float s)
virtual void	InsertTime (TimeValue ins, TimeValue amount)
virtual BOOL	SupportTimeOperations ()
virtual CoreExport void	MapKeys (TimeMap *map, DWORD flags)
virtual void	DeleteKeys (DWORD flags)
virtual void	DeleteKeyByIndex (int index)
virtual void	SelectKeys (TrackHitTab &sel, DWORD flags)
virtual void	SelectSubKeys (int subNum, TrackHitTab &sel, DWORD flags)
virtual void	SelectSubCurve (int subNum, BOOL sel)
virtual void	SelectKeyByIndex (int i, BOOL sel)
virtual BOOL	IsKeySelected (int i)
virtual void	FlagKey (TrackHitRecord hit)
virtual int	GetFlagKeyIndex ()
virtual int	NumSelKeys ()
virtual void	CloneSelectedKeys (BOOL offset=FALSE)
virtual void	AddNewKey (TimeValue t, DWORD flags)
virtual void	MoveKeys (ParamDimensionBase *dim, float delta, DWORD flags)
virtual void	ScaleKeyValues (ParamDimensionBase *dim, float origin, float scale, DWORD flags)
virtual void	SelectCurve (BOOL sel)
virtual BOOL	IsCurveSelected ()
	Returns TRUE if the function curve is selected; otherwise returns FALSE. More...
virtual BOOL	IsSubCurveSelected (int subNum)
	Returns the selected state of the sub-curve whose index is passed. More...
virtual int	GetSelKeyCoords (TimeValue &t, float &val, DWORD flags)
virtual void	SetSelKeyCoords (TimeValue t, float val, DWORD flags)
virtual int	SetSelKeyCoordsExpr (ParamDimension *dim, const MCHAR *timeExpr, const MCHAR *valExpr, DWORD flags)
virtual void	AdjustTangents (TrackHitRecord hit, ParamDimensionBase *dim, Rect &rcGraph, float tzoom, int tscroll, float vzoom, int vscroll, int dx, int dy, DWORD flags)
virtual void	AdjustTangents (TrackHitRecord hit, ParamDimensionBase *dim, float angle, float length, DWORD flags)
virtual CoreExport BOOL	IsAnimated ()
virtual BOOL	CanCopyTrack (Interval iv, DWORD flags)
virtual BOOL	CanPasteTrack (TrackClipObject *cobj, Interval iv, DWORD flags)
virtual TrackClipObject *	CopyTrack (Interval iv, DWORD flags)
virtual void	PasteTrack (TrackClipObject *cobj, Interval iv, DWORD flags)
virtual BOOL	CanCopySubTrack (int subNum, Interval iv, DWORD flags)
virtual BOOL	CanPasteSubTrack (int subNum, TrackClipObject *cobj, Interval iv, DWORD flags)
virtual TrackClipObject *	CopySubTrack (int subNum, Interval iv, DWORD flags)
virtual void	PasteSubTrack (int subNum, TrackClipObject *cobj, Interval iv, DWORD flags)
virtual int	GetTrackVSpace (int lineHeight)
virtual int	HitTestTrack (TrackHitTab &hits, Rect &rcHit, Rect &rcTrack, float zoom, int scroll, DWORD flags)
virtual int	PaintTrack (ParamDimensionBase *dim, HDC hdc, Rect &rcTrack, Rect &rcPaint, float zoom, int scroll, DWORD flags)
virtual int	PaintSubTrack (int subNum, ParamDimensionBase *dim, HDC hdc, Rect &rcTrack, Rect &rcPaint, float zoom, int scroll, DWORD flags)
virtual int	PaintFCurves (ParamDimensionBase *dim, HDC hdc, Rect &rcGraph, Rect &rcPaint, float tzoom, int tscroll, float vzoom, int vscroll, DWORD flags)
virtual int	HitTestFCurves (ParamDimensionBase *dim, TrackHitTab &hits, Rect &rcHit, Rect &rcGraph, float tzoom, int tscroll, float vzoom, int vscroll, DWORD flags)
virtual int	PaintSubFCurves (int subNum, ParamDimensionBase *dim, HDC hdc, Rect &rcGraph, Rect &rcPaint, float tzoom, int tscroll, float vzoom, int vscroll, DWORD flags)
virtual int	HitTestSubFCurves (int subNum, ParamDimensionBase *dim, TrackHitTab &hits, Rect &rcHit, Rect &rcGraph, float tzoom, int tscroll, float vzoom, int vscroll, DWORD flags)
virtual void	EditTrackParams (TimeValue t, ParamDimensionBase *dim, const MCHAR *pname, HWND hParent, IObjParam *ip, DWORD flags)
virtual int	TrackParamsType ()
virtual int	GetFCurveExtents (ParamDimensionBase *dim, float &min, float &max, DWORD flags)
	This method is called to calculate the largest and smallest values of the anim. More...
CoreExport void	AddNoteTrack (NoteTrack *note)
CoreExport void	DeleteNoteTrack (NoteTrack *note, BOOL delNote=TRUE)
CoreExport BOOL	HasNoteTracks ()
CoreExport int	NumNoteTracks ()
CoreExport NoteTrack *	GetNoteTrack (int i)
virtual void	FreeAllBitmaps ()
virtual void	GetSystemNodes (INodeTab &nodes, SysNodeContext Context)
virtual BOOL	IsSubClassOf (Class_ID classID)
	returns true if the animatable has sub-classed off the given class More...
virtual CoreExport void	MouseCycleCompleted (TimeValue t)
virtual CoreExport void	MouseCycleStarted (TimeValue t)
virtual int	NumParamBlocks ()
virtual IParamBlock2 *	GetParamBlock (int i)
virtual IParamBlock2 *	GetParamBlockByID (short id)
CoreExport bool	SvSaveData (ISave *isave, USHORT id)
CoreExport bool	SvLoadData (ILoad *iLoad)
CoreExport DWORD	SvGetRefIndex ()
CoreExport void	SvSetRefIndex (DWORD i)
CoreExport bool	SvDeleteRefIndex ()
CoreExport SvGraphNodeReference	SvStdTraverseAnimGraph (IGraphObjectManager *gom, Animatable *owner, int id, DWORD flags)
virtual CoreExport bool	SvCanInitiateLink (IGraphObjectManager *gom, IGraphNode *gNode)
virtual CoreExport bool	SvCanConcludeLink (IGraphObjectManager *gom, IGraphNode *gNode, IGraphNode *gNodeChild)
virtual CoreExport bool	SvCanSetName (IGraphObjectManager *gom, IGraphNode *gNode)
virtual CoreExport bool	SvSetName (IGraphObjectManager *gom, IGraphNode *gNode, const MSTR &name)
virtual CoreExport bool	SvCanRemoveThis (IGraphObjectManager *gom, IGraphNode *gNode)
virtual CoreExport bool	SvRemoveThis (IGraphObjectManager *gom, IGraphNode *gNode)
	Called when the user deletes this object in the schematic view... More...
virtual CoreExport bool	SvIsHighlighted (IGraphObjectManager *gom, IGraphNode *gNode)
virtual CoreExport COLORREF	SvGetSwatchColor (IGraphObjectManager *gom, IGraphNode *gNode)
virtual CoreExport bool	SvIsInactive (IGraphObjectManager *gom, IGraphNode *gNode)
virtual CoreExport bool	SvLinkChild (IGraphObjectManager *gom, IGraphNode *gNodeThis, IGraphNode *gNodeChild)
virtual CoreExport bool	SvEditProperties (IGraphObjectManager *gom, IGraphNode *gNode)
virtual CoreExport MSTR	SvGetTip (IGraphObjectManager *gom, IGraphNode *gNode)
virtual CoreExport MSTR	SvGetRefTip (IGraphObjectManager *gom, IGraphNode *gNode, IGraphNode *gNodeMaker)
virtual CoreExport bool	SvCanDetach (IGraphObjectManager *gom, IGraphNode *gNode)
virtual CoreExport bool	SvDetach (IGraphObjectManager *gom, IGraphNode *gNode)
virtual CoreExport MSTR	SvGetRelTip (IGraphObjectManager *gom, IGraphNode *gNodeTarget, int id, IGraphNode *gNodeMaker)
	Returns a string to be displayed in the tip window in the schematic view for a relationship from "gNodeMaker" to "gNodeTarget"... More...
virtual CoreExport bool	SvCanDetachRel (IGraphObjectManager *gom, IGraphNode *gNodeTarget, int id, IGraphNode *gNodeMaker)
	Returns true if this object can respond to the SvDetachRel(...) method... More...
virtual CoreExport bool	SvDetachRel (IGraphObjectManager *gom, IGraphNode *gNodeTarget, int id, IGraphNode *gNodeMaker)
	Detach this relationship. More...
virtual CoreExport bool	SvHandleRelDoubleClick (IGraphObjectManager *gom, IGraphNode *gNodeTarget, int id, IGraphNode *gNodeMaker)
	Called when this relationship is double-clicked in the schematic view... More...
CoreExport ICustAttribContainer *	GetCustAttribContainer ()
	This method returns a pointer to the custom attributes container interface class. More...
CoreExport void	AllocCustAttribContainer ()
	This method allocates space for a custom attributes container. More...
CoreExport void	DeleteCustAttribContainer ()
	This method deletes space used by a custom attributes container. More...
void	SetAFlag (DWORD mask)
void	ClearAFlag (DWORD mask)
	Clears one or more bits in the Animatable flags. More...
bool	TestAFlag (DWORD mask) const
	Tests one or more bits in the Animatable flags. More...
void	SetAFlagEx (DWORD mask)
	Sets one or more bits in the Animatable extended flags. More...
void	ClearAFlagEx (DWORD mask)
	Clears one or more bits in the Animatable extended flags. More...
bool	TestAFlagEx (DWORD mask) const
	Tests one or more bits in the Animatable extended flags. More...
CoreExport bool	TestFlagBit (int index)
	Tests the specified flag bit. More...
CoreExport void	SetFlagBit (int index, bool newValue=true)
	Sets the specified flag bit. More...
CoreExport void	ClearFlagBit (int index)
	Clears the specified flag bit. More...
Public Member Functions inherited from InterfaceServer
virtual UtilExport	~InterfaceServer ()
	Destructor. More...

Public Attributes
Mesh	mesh
TessApprox	mDispApprox
bool	mSubDivideDisplacement
bool	mDisableDisplacement
bool	mSplitMesh

Protected Member Functions
CoreExport void	CopyValidity (TriObject *fromOb, ChannelMask channels)
CoreExport RefResult	NotifyRefChanged (const Interval &changeInt, RefTargetHandle hTarget, PartID &partID, RefMessage message, BOOL propagate)
	Receives and responds to messages. More...
void	BuildGenerateRenderItemContext (const MaxSDK::Graphics::UpdateDisplayContext &displayContext, MaxSDK::Graphics::GenerateMeshRenderItemsContext &context, bool bNodeSelected)
Protected Member Functions inherited from ReferenceTarget
virtual CoreExport int	DoEnumDependentsImpl (DependentEnumProc *dep)
	Method to perform an enumeration on a ReferenceTarget. More...
virtual CoreExport	~ReferenceTarget ()=0
	Destructor. More...
Protected Member Functions inherited from ReferenceMaker
virtual CoreExport	~ReferenceMaker ()=0
	Destructor. More...
virtual CoreExport void	SetReference (int i, RefTargetHandle rtarg)
	Stores a ReferenceTarget as its 'i-th' reference`. More...
void	BlockEval ()
void	UnblockEval ()
int	Evaluating ()
CoreExport RefResult	StdNotifyRefChanged (const Interval &changeInt, RefTargetHandle hTarget, PartID partID, RefMessage message, BOOL propagate, NotifyDependentsOption notifyDependentsOption)
Protected Member Functions inherited from Animatable
virtual CoreExport	~Animatable ()=0
	Destructor. More...
Protected Member Functions inherited from Noncopyable
	Noncopyable ()
	~Noncopyable ()

Protected Attributes
Interval	geomValid
Interval	topoValid
Interval	texmapValid
Interval	selectValid
Interval	vcolorValid
Interval	gfxdataValid
ChannelMask	validBits
Protected Attributes inherited from BaseObject
MaxSDK::Graphics::RenderItemHandleArray	mRenderItemHandles
Protected Attributes inherited from Animatable
DWORD	aflag
AnimPropertyList	aprops

Additional Inherited Members
Static Public Member Functions inherited from Animatable
static CoreExport BOOL	IsDeleted (Animatable *anim)
	Debug method to determine whether an object has been deleted. More...
static CoreExport AnimHandle	GetHandleByAnim (Animatable *anim)
	Get the unique handle for an Animatable object. More...
static CoreExport Animatable *	GetAnimByHandle (AnimHandle handle)
	Get an Animatable object from its unique handle. More...
static CoreExport void	EnumerateAllAnimatables (EnumAnimList &enumProcObject)
	Enumerator to enumerate across all animatables. More...
static CoreExport bool	RegisterAppDataLoadCallback (const Class_ID &cid, SClass_ID sid, APPDATALOADPROC proc)
	Registers a callback proc that is called when an AppDataChunk is read from a scene file. More...
static CoreExport bool	UnRegisterAppDataLoadCallback (const Class_ID &cid, SClass_ID sid, APPDATALOADPROC proc)
	Unregisters a callback proc that is called when an AppDataChunk is read from a scene file. More...
static CoreExport bool	RegisterAppDataLoadCallback (DWORD sbid, APPDATALOADPROC proc)
	Registers a callback proc that is called when an AppDataChunk is read from a scene file. More...
static CoreExport bool	UnRegisterAppDataLoadCallback (DWORD sbid, APPDATALOADPROC proc)
	Unregisters a callback proc that is called when an AppDataChunk is read from a scene file. More...
static CoreExport int	RequestFlagBit ()
	Requests an unique flag bit index. More...
static CoreExport void	ReleaseFlagBit (int index)
	Releases the flag bit index. More...
static CoreExport void	ClearFlagBitInAllAnimatables (int index)
	Clears the specified flag bit in all Animatables. More...
Static Public Member Functions inherited from MaxHeapOperators
static UtilExport void *	operator new (size_t size)
	Standard new operator used to allocate objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, const std::nothrow_t &e)
	Standard new operator used to allocate objects if there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new (size_t size, const char *filename, int line)
	New operator used to allocate objects that takes the filename and line number where the new was called If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, int block_type, const char *filename, int line)
	New operator used to allocate objects that takes the type of memory, filename and line number where the new was called If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, const std::nothrow_t &e, const char *filename, int line)
	New operator used to allocate objects that takes the filename and line number where the new was called If there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new (size_t size, unsigned long flags)
	New operator used to allocate objects that takes extra flags to specify special operations If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, const std::nothrow_t &e, unsigned long flags)
	New operator used to allocate objects that takes extra flags to specify special operations If there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new[] (size_t size)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e)
	New operator used to allocate arrays of objects If there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new[] (size_t size, const char *filename, int line)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new[] (size_t size, int block_type, const char *filename, int line)
	New operator used to allocate arrays of objects. More...
static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e, const char *filename, int line)
	New operator used to allocate arrays of objects If there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new[] (size_t size, unsigned long flags)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e, unsigned long flags)
	New operator used to allocate arrays of objects If there is insufficient memory, NULL will be returned. More...
static UtilExport void	operator delete (void *ptr)
	Standard delete operator used to deallocate an object If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete (void *ptr, const std::nothrow_t &e)
	Standard delete operator used to deallocate an object If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete (void *ptr, const char *filename, int line)
	Delete operator used to deallocate an object that takes the filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete (void *ptr, int block_type, const char *filename, int line)
	Delete operator used to deallocate an object that takes the type of memory, filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete (void *ptr, const std::nothrow_t &e, const char *filename, int line)
	Delete operator used to deallocate an object that takes the filename and line number where the delete was called If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete (void *ptr, unsigned long flags)
	Delete operator used to deallocate an object that takes extra flags to specify special operations If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete (void *ptr, const std::nothrow_t &e, unsigned long flags)
	Delete operator used to deallocate an object that takes extra flags to specify special operations If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete[] (void *ptr)
	Standard delete operator used to deallocate an array of objects If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, const std::nothrow_t &e)
	Standard delete operator used to deallocate an array of objects If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete[] (void *ptr, const char *filename, int line)
	Delete operator used to deallocate an array of objects that takes the filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, int block_type, const char *filename, int line)
	Delete operator used to deallocate an array of objects that takes the type of memory, filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, const std::nothrow_t &e, const char *filename, int line)
	Delete operator used to deallocate an array of objects that takes the filename and line number where the delete was called If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete[] (void *ptr, unsigned long flags)
	Delete operator used to deallocate an array of objects that takes extra flags to specify special operations If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, const std::nothrow_t &e, unsigned long flags)
	Delete operator used to deallocate an array of objects that takes extra flags to specify special operations If the pointer is invalid, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, void *placement_ptr)
	Placement new operator. More...
static UtilExport void	operator delete (void *ptr, void *placement_ptr)
	Placement delete operator. More...
Static Public Attributes inherited from Animatable
static const AnimHandle	kInvalidAnimHandle = 0

Constructor & Destructor Documentation

CoreExport TriObject

(

)

CoreExport ~TriObject

(

)

Member Function Documentation

CoreExport void CopyValidity ( TriObject *  fromOb, ChannelMask  channels  )

protected

CoreExport RefResult NotifyRefChanged ( const Interval &  changeInt, RefTargetHandle  hTarget, PartID &  partID, RefMessage  message, BOOL  propagate  )

protectedvirtual

Receives and responds to messages.

A plugin which makes references must implement a method to receive and respond to messages broadcast by its dependents. This is done by implementing NotifyRefChanged(). The plugin developer usually implements this method as a switch statement where each case is one of the messages the plugin needs to respond to. The Method StdNotifyRefChanged calls this, which can change the partID to new value. If it doesn't depend on the particular message& partID, it should return REF_DONTCARE.

• For developer that need to update a dialog box with data about an object you reference note the following related to this method: This method may be called many times. For instance, say you have a dialog box that displays data about an object you reference. This method will get called many time during the drag operations on that object. If you updated the display every time you'd wind up with a lot of 'flicker' in the dialog box. Rather than updating the dialog box each time, you should just invalidate the window in response to the NotifyRefChanged() call. Then, as the user drags the mouse your window will still receive paint messages. If the scene is complex the user may have to pause (but not let up on the mouse) to allow the paint message to go through since they have a low priority. This is the way many windows in 3ds Max work.

Parameters

changeInt	- This is the interval of time over which the message is active. Currently, all plug-ins will receive FOREVER for this interval, with the exception of REFMSG_FLAGDEPENDENTS notifications. In that case, changeInt.Start() is the timepoint to perform the dependency test.
hTarget	- This is the handle of the reference target the message was sent by. The reference maker uses this handle to know specifically which reference target sent the message.
partID	- This contains information specific to the message passed in. Some messages don't use the partID at all. See the section List of Reference Messages for more information about the meaning of the partID for some common messages.
message	- The message parameters passed into this method is the specific message which needs to be handled.
propagate	- If called through ReferenceMaker::NotifyDependents(), the value of 'propagate' passed to it. Used if calling NotifyDependents() from within NotifyRefChanged().

Returns

The return value from this method is of type RefResult. This is usually REF_SUCCEED indicating the message was processed. Sometimes, the return value may be REF_STOP. This return value is used to stop the message from being propagated to the dependents of the item.

Implements ReferenceMaker.

void BuildGenerateRenderItemContext ( const MaxSDK::Graphics::UpdateDisplayContext &  displayContext, MaxSDK::Graphics::GenerateMeshRenderItemsContext &  context, bool  bNodeSelected  )

protected

virtual CoreExport bool PrepareDisplay ( const MaxSDK::Graphics::UpdateDisplayContext &  prepareDisplayContext )

virtual

Reimplemented from BaseObject.

virtual CoreExport bool UpdatePerNodeItems ( const MaxSDK::Graphics::UpdateDisplayContext &  updateDisplayContext, MaxSDK::Graphics::UpdateNodeContext &  nodeContext, MaxSDK::Graphics::IRenderItemContainer &  targetRenderItemContainer  )

virtual

Reimplemented from BaseObject.

CoreExport unsigned long GetObjectDisplayRequirement ( ) const

virtual

Reimplemented from BaseObject.

virtual CoreExport BaseInterface* GetInterface ( Interface_ID  id )

virtual

Inherited from Animatable.

Returns a pointer to the Base Interface for the interface ID passed.

Parameters

id	- The unique ID of the interface to get

Returns

A Pointer to the Interface

Reimplemented from Object.

CoreExport void* GetInterface ( ULONG  id )

virtual

Inherited from Animatable.

Returns a pointer to the interface.

Parameters

id	- The id of the interface.

Returns

A Pointer to the Interface

Reimplemented from Object.

CoreExport void ReleaseInterface ( ULONG  id, void *  i  )

virtual

Remarks

This method is not currently used. It is reserved for future use. Its purpose is for releasing an interface created with GetInterface().

Reimplemented from Animatable.

CoreExport int HitTest ( TimeValue  t, INode *  inode, int  type, int  crossing, int  flags, IPoint2 *  p, ViewExp *  vpt  )

virtual

This method is called to determine if the specified screen point intersects the item.

The method returns nonzero if the item was hit; otherwise 0.

Parameters

t	The time to perform the hit test.
inode	A pointer to the node to test.
type	The type of hit testing to perform. See Scene and Node Hit Test Types. for details.
crossing	The state of the crossing setting. If TRUE crossing selection is on.
flags	The hit test flags. See Scene and Node Hit Testing Flags for details.
p	The screen point to test.
vpt	An interface pointer that may be used to call methods associated with the viewports.

Returns

Nonzero if the item was hit; otherwise 0.

Reimplemented from BaseObject.

CoreExport int Display ( TimeValue  t, INode *  inode, ViewExp *  vpt, int  flags  )

virtual

This is called by the system to have the item display itself (perform a quick render in viewport, using the current TM).

Note: For this method to be called the object's validity interval must be invalid at the specified time t. If the interval is valid, the system may not call this method since it thinks the display is already valid.

Parameters

t	The time to display the object.
inode	The node to display.
vpt	An interface pointer that may be used to call methods associated with the viewports.
flags	See Display Flags.

Returns

Default return value is -1, means this object doesn't have display function. 0 means it didn't draw anything in current frame. Otherwise return positive values..

Reimplemented from BaseObject.

CoreExport void Snap ( TimeValue  t, INode *  inode, SnapInfo *  snap, IPoint2 *  p, ViewExp *  vpt  )

virtual

Checks the point passed for a snap and updates the SnapInfo structure.

Note

Developers wanting to find snap points on an Editable Mesh object should see the method XmeshSnap::Snap() in /MAXSDK/SAMPLES/SNAPS/XMESH/XMESH.CPP.

Parameters

t	The time to check.
inode	The node to check.
snap	The snap info structure to update.
p	The screen point to check.
vpt	An interface pointer that may be used to call methods associated with the viewports.

Reimplemented from BaseObject.

CoreExport CreateMouseCallBack* GetCreateMouseCallBack ( )

virtual

This method allows the system to retrieve a callback object used in creating an object in the 3D viewports.

This method returns a pointer to an instance of a class derived from CreateMouseCallBack. This class has a method proc() which is where the programmer defines the user/mouse interaction during the object creation phase.

Returns

A pointer to an instance of a class derived from CreateMouseCallBack.

Implements BaseObject.

CoreExport RefTargetHandle Clone ( RemapDir &  remap )

virtual

This method is used by 3ds Max to clone an object.

See also

CloneRefHierarchy(), class RemapDir This method is called by 3ds Max to have the plugin clone itself. The plug-in's implementation of this method should copy both the data structure and all the data residing in the data structure of this reference target. The plugin should clone all its references as well. Also, the plug-in's implementation of this method must call BaseClone(). In order for classes derived from this class to clone cleanly, the Clone method should just create the new instance, and then call an implementation of BaseClone that clones the references and copies any other necessary data. For example:

class MyDerivedPlugin
    : public MyBasePlugin
{
    const int MY_REFERENCE = 1;

    ReferenceTarget* Clone(RemapDir& remap)
    {
        ReferenceTarget* result = new MyDerivedPlugin();
        BaseClone(this, result, remap);
        return result;
    }

    void BaseClone(ReferenceTarget* from, ReferenceTarget* to, RemapDir& remap)
    {
        if (!to || !from || from == to)
            return;    
        MyBasePlugin::BaseClone(from, to, remap);
        to->ReplaceReference(MY_REFERENCE, remap->CloneRef(from->GetReference(MY_REFERENCE)));
    }
};

This method should not be directly called by plug-ins. Instead, either RemapDir::CloneRef() or CloneRefHierachy() should be used to perform cloning. These methods ensure that the mapping from the original object to the clone is added to the RemapDir used for cloning, which may be used during backpatch operations

Note

See the remarks in method BaseClone() below.

Parameters

remap

- A RemapDir instance used for remapping references during a Clone.

Returns

A pointer to the cloned item.

Reimplemented from ReferenceTarget.

CoreExport ObjectState Eval ( TimeValue  t )

virtual

This method is called to evaluate the object and return the result as an ObjectState.

When the system has a pointer to an object it doesn't know if it's a procedural object or a derived object. So it calls Eval() on it and gets back an ObjectState. A derived object managed by the system may have to call Eval() on its input for example. A plug-in (like a procedural object) typically just returns itself. A plug-in that does not just return itself is the Morph Object (/MAXSDK/SAMPLES/OBJECTS/MORPHOBJ.CPP). This object uses a morph controller to compute a new object and fill in an ObjectState which it returns.

Parameters

t	Specifies the time to evaluate the object.

Returns

The result of evaluating the object as an ObjectState.

Sample Code:

Typically this method is implemented as follows:

{ return ObjectState(this); }

Implements Object.

CoreExport Interval ObjectValidity ( TimeValue  t )

virtual

This method returns the validity interval of the object as a whole at the specified time.

Parameters

t	The time to compute the validity interval.

Returns

The validity interval of the object, including that queried from the base class.

Reimplemented from Object.

CoreExport BOOL HasUVW ( )

virtual

Call this method to find out if the object has UVW coordinates.

This method returns TRUE if the object has UVW coordinates; otherwise FALSE. In 3ds Max 2.0 and later there is code in the renderer that will automatically turn on the UVW coordinates of the base object if UV's are missing (and needed). The base object has to implement two simple methods to make this work: HasUVW() and SetGenUVW(). Developers are encouraged to put these methods in their objects: it makes using the program easier for the user. If they are not implemented, it doesn't cause any real harm: it will just operate as before and put up the missing UVW's message. Here is how the procedural sphere implements these methods:

BOOL SphereObject::GetGenUVW()
{
    BOOL genUVs;
    Interval v;
    pblock->GetValue(PB_GENUVS, 0, genUVs, v);
    return genUVs;
}

void SphereObject::SetGenUVW(BOOL sw)
{
    if (sw==GetGenUVW()) return;
    pblock->SetValue(PB_GENUVS,0, sw);
}

Important Note: The pblock->SetValue() will cause a call to NotifyDependents(FOREVER, PART_TEXMAP, REFMSG_CHANGE), which will invalidate the UVW cache. It is essential that this call be made, so if the 'generate UVW' boolean is not handled by a parameter block, then NotifyDependents() needs to be called explicitly. Also Note: For "modifiable objects" that pass up the pipeline getting modified, such as TriObject, EditTriObject, etc., which cannot generate their own UVWs, but can carry them in their data structures, only this HasUVW() method needs to be implemented. For example, here is the implementation for TriObject: BOOL TriObject::HasUVW() { return mesh.tvFace?1:0; }

Reimplemented from Object.

CoreExport BOOL HasUVW ( int  mapChannel )

virtual

Call this method to find out if the object is has UVW coordinates for the specified mapping channel.

This method returns TRUE if the object has UVW coordinates; otherwise FALSE. See the method HasUVW() above for more details.

Parameters

mapChannel

See Mapping Channels.

Reimplemented from Object.

CoreExport Interval ChannelValidity ( TimeValue  t, int  nchan  )

virtual

Retrieve the current validity interval for the nchan channel of the object.

Note

Most procedural objects won't implement this method since they don't have individual channels. Developers wanting to get the validity interval for a procedural object should use Object::ObjectValidity() instead.

Parameters

t	The time to retrieve the validity interval of the channel.
nchan	Specifies the channel to return the validity interval of. See Object Channels.

Returns

The validity interval of the specified channel.

Reimplemented from Object.

CoreExport void SetChannelValidity ( int  nchan, Interval  v  )

virtual

Sets the validity interval of the specified channel.

Parameters

nchan	Specifies the channel. See Object Channels.
v	The validity interval for the channel.

Reimplemented from Object.

CoreExport void InvalidateChannels ( ChannelMask  channels )

virtual

This method invalidates the intervals for the given channel mask.

This just sets the validity intervals to empty (calling SetEmpty() on the interval).

Parameters

channels

Specifies the channels to invalidate.

Reimplemented from Object.

CoreExport Interval ConvertValidity

(

TimeValue

t

)

int IsDeformable ( )

inlinevirtual

Indicates whether this object is deformable.

A deformable object is simply an object with points that can be modified. Deformable objects must implement the generic deformable object methods (NumPoints(), GetPoint(i), SetPoint(i), Deform()). A deformable object is simply an object with points that can be modified. These points can be stored in any form the object wants. They are accessed through a virtual array interface with methods to get and set the 'i-th' point. If an object has tangents for instance, it would convert them to and from points as necessary. For example, a simple Bezier spline object that stored its control handles relative to the knot would convert them to be absolute when GetPoint() was called with 'i' specifying one of the control points. When the control point is later set, the object can convert it back to be relative to its knot. At this point it could also apply any constraints that it may have, such as maintaining a degree of continuity. The idea is that the entity calling GetPoint(i) and SetPoint(i) doesn't care what the point represents. It will simply apply some function to the point.

Note

The Deformable object methods only need to be implemented if the object returns TRUE from this method.

Returns

Return nonzero if the object is deformable and implements the generic deformable object methods; otherwise 0.

Reimplemented from Object.

{ return 1; }  

int NumPoints ( )

inlinevirtual

The points of a deformable object are accessed through a virtual array interface.

This method specifies the number of points in the object. The meaning of 'points' is defined by the object. A TriObject uses the vertices as the points for example. b>

Returns

The number of points in the object.

Reimplemented from Object.

{ return mesh.getNumVerts(); }

Point3 GetPoint ( int  i )

inlinevirtual

The points of a deformable object are accessed through a virtual array interface.

This method returns the 'i-th' point of the object.

Note

If your plug-in is a modifier and you want to operate on the selected points of the object you are modifying, you can't tell which points are selected unless you know the type of object. If it is a generic deformable object there is no way of knowing since the way the object handles selection is up to it. Therefore, if you want to operate on selected points of a generic deformable object, use a Deformer.

Parameters

i	Specifies which point should be returned.

Returns

The 'i-th' point of the object.

Reimplemented from Object.

{ return mesh.getVert(i); }

void SetPoint ( int  i, const Point3 &  p  )

inlinevirtual

The points of a deformable object are accessed through a virtual array interface.

This method stores the 'i-th' point of the object.

Parameters

i	The index of the point to store.
p	The point to store.

Reimplemented from Object.

{ mesh.setVert(i,p); }

CoreExport BOOL IsPointSelected ( int  i )

virtual

Returns TRUE if the 'i-th' point is selected; otherwise FALSE.

Parameters

i	The zero based index of the point to check.

Reimplemented from Object.

CoreExport float PointSelection ( int  i )

virtual

Returns a floating point weighted point selection if the object supports it.

The default implementation just returns 1.0f if selected and 0.0f if not.

Parameters

i	The zero based index of the point to check.

Reimplemented from Object.

int IsMappable ( )

inlinevirtual

This method lets you know if the ApplyUVWMap() method is available for this object.

This is used by things like the UVW mapping modifier, so that it can determine which objects can have their mapping modified. Returns nonzero if the object is mappable; otherwise zero.

Reimplemented from Object.

{ return 1; }

int NumMapChannels ( )

inlinevirtual

Returns the maximum number of channels supported by this type of object.

TriObjects for instance return MAX_MESHMAPS which is currently set to 100.

Reimplemented from Object.

{ return MAX_MESHMAPS; }

int NumMapsUsed ( )

inlinevirtual

Returns the number of maps currently used by this object.

This is at least 1+(highest channel in use). This is used so a plug-in that does something to all map channels doesn't always have to do it to every channel up to MAX_MESHMAPS but rather only to this value.

Reimplemented from Object.

{ return mesh.getNumMaps(); }

void ApplyUVWMap ( int  type, float  utile, float  vtile, float  wtile, int  uflip, int  vflip, int  wflip, int  cap, const Matrix3 &  tm, int  channel = 1  )

inlinevirtual

This method may be called to map the object with UVW mapping coordinates.

If the object returns nonzero from IsMappable() then this method should be implemented.

Parameters

type	The mapping type. One of the following values: MAP_PLANAR MAP_CYLINDRICAL MAP_SPHERICAL MAP_BALL MAP_BOX
utile	Number of tiles in the U direction.
vtile	Number of tiles in the V direction.
wtile	Number of tiles in the W direction.
uflip	If nonzero the U values are mirrored.
vflip	If nonzero the V values are mirrored.
wflip	If nonzero the W values are mirrored.
cap	This is used with MAP_CYLINDRICAL. If nonzero, then any face normal that is pointing more vertically than horizontally will be mapped using planar coordinates.
tm	This defines the mapping space. As each point is mapped, it is multiplied by this matrix, and then it is mapped.
channel	This indicates which channel the mapping is applied to. See Mapping Channels .

Reimplemented from Object.

                                                                                      {
                mesh.ApplyUVWMap(type,utile,vtile,wtile,uflip,vflip,wflip,cap,tm,channel); }

CoreExport BOOL PolygonCount ( TimeValue  t, int &  numFaces, int &  numVerts  )

virtual

Retreives the number of faces and vertices of the polyginal mesh representation of this object.

If this method returns FALSE then this functionality is not supported. Note: Plug-In developers should use the global function GetPolygonCount(Object*, int&, int&) to retrieve the number f vertices and faces in an arbitrary object.

Parameters

t	The time at which to compute the number of faces and vertices.
numFaces	The number of faces is returned here.
numVerts	The number of vertices is returned here.

Returns

TRUE if the method is fully implemented; otherwise FALSE.

Reimplemented from Object.

void PointsWereChanged ( )

inlinevirtual

Informs the object that its points have been deformed, so it can invalidate its cache.

A developer who uses the GetPoint() / SetPoint() approach to modifying an object will call PointsWereChanged() to invalidate the object's cache. For example, if a modifier calls SetPoint(), when it is finished it should call this method so the object can invalidate and/or update its bounding box and any other data it might cache.

Reimplemented from Object.

{ mesh.InvalidateGeomCache(); }

CoreExport void GetDeformBBox ( TimeValue  t, Box3 &  box, Matrix3 *  tm = NULL, BOOL  useSel = FALSE  )

virtual

This method computes the bounding box in the objects local coordinates or the optional space defined by tm.

Note: If you are looking for a precise bounding box, use this method and pass in the node's object TM (INode::GetObjectTM()) as the matrix.

Parameters

t	The time to compute the box.
box	A reference to a box the result is stored in.
tm	This is an alternate coordinate system used to compute the box. If the tm is not NULL this matrix should be used in the computation of the result.
useSel	If TRUE, the bounding box of selected sub-elements should be computed; otherwise the entire object should be used.

Reimplemented from Object.

CoreExport void Deform ( Deformer *  defProc, int  useSel  )

virtual

This is the method used to deform the object with a deformer.

The developer should loop through the object's points calling the defProc for each point (or each selected point if useSel is nonzero). The Deform() method is mostly a convenience. Modifiers can implement a 'Deformer' callback object which is passed to the Deform() method. The object then iterates through its points calling their deformer's callback for each point. The only difference between using the Deform() method as opposed to iterating through the points is that the Deform() method should respect sub-object selection. For example, the TriObject's implementation of Deform() iterates through its vertices, if the TriObject's selection level is set to vertex then it only calls the Deformer's callback for vertices that are selected. This way modifiers can be written that can be applied only to selection sets without any specific code to check selected points. The default implementation of this method just iterates through all points using GetPoint(i) and SetPoint(i). If an object supports sub-object selection sets then it should override this method.

Parameters

defProc	A pointer to an instance of the Deformer class. This is the callback object that actually performs the deformation.
useSel	A flag to indicate if the object should use the selected points only. If nonzero the selected points are used; otherwise all the points of the object are used.

Default Implementation:

void Object::Deform(Deformer *defProc,int useSel)
{
    int nv = NumPoints();
    for (int i=0; i<nv; i++)
        SetPoint(i,defProc->Map(i,GetPoint(i)));
    PointsWereChanged();
}

Sample Code:

This code shows the TriObject implementation of this method. Note how it looks at the useSel parameter to only call the selected points if required.

void TriObject::Deform(Deformer *defProc,int useSel)
{
    int nv = NumPoints();
    int i;
    if ( useSel ) {
        BitArray sel = mesh.VertexTempSel();
        float *vssel = mesh.getVSelectionWeights ();
        if (vssel) {
            for (i=0; i<nv; i++) {
                if(sel[i]) {
                    SetPoint(i,defProc->Map(i,GetPoint(i)));
                    continue;
                }
                if (vssel[i]==0) continue;
                Point3 & A = GetPoint(i);
                Point3 dir = defProc->Map(i,A) - A;
                SetPoint(i,A+vssel[i]*dir);
            }
        }
        else {
            for (i=0; i<nv; i++) if (sel[i])
                SetPoint(i,defProc->Map(i,GetPoint(i)));
        }
    }
    else {
        for (i=0; i<nv; i++)
            SetPoint(i,defProc->Map(i,GetPoint(i)));
    }
    PointsWereChanged();
}

Reimplemented from Object.

CoreExport int CanConvertToType ( Class_ID  obtype )

virtual

Indicates whether the object can be converted to the specified type.

If the object returns nonzero to indicate it can be converted to the specified type, it must handle converting to and returning an object of that type from ConvertToType().

See also

Class ObjectConverter for additional details on converting objects between types.

Parameters

obtype

The Class_ID of the type of object to convert to. See Class Class_ID, Class IDs defined in plugapi.h.

Returns

Nonzero if the object can be converted to the specified type; otherwise 0.

Default Implementation:

{ return 0; }

Reimplemented from Object.

CoreExport Object* ConvertToType ( TimeValue  t, Class_ID  obtype  )

virtual

This method converts this object to the type specified and returns a pointer it.

Note that if ConvertToType() returns a new object it should be a completely different object with no ties (pointers or references) to the original.

See also

class ObjectConverter for additional details on converting objects between types.

The following is an issue that developers of world space modifiers need to

be aware of if the world space modifier specifies anything but generic deformable objects as its input type. In other words, if a world space modifier, in its implementation of Modifier::InputType(), doesn't specifically return defObjectClassID then the following issue regarding the 3ds Max pipeline needs to be considered. Developers of other plug-ins that don't meet this condition don't need to be concerned with this issue.

World space modifiers that work on anything other than generic deformable

objects are responsible for transforming the points of the object they modify into world space using the ObjectState TM. To understand why this is necessary, consider how 3ds Max applies the node transformation to the object flowing down the pipeline.

In the geometry pipeline architecture, the node in the scene has its

transformation applied to the object in the pipeline at the transition between the last object space modifier and the first world space modifier. The node transformation is what places the object in the scene – thus this is what puts the object in world space. The system does this by transforming the points of the object in the pipeline by the node transformation. This is only possible however for deformable objects. Deformable objects are those that support the Object::IsDeformable(), NumPoints(), GetPoint() and SetPoint() methods. These deformable objects can be deformed by the system using these methods, and thus the system can modify the points to put them in world space itself.

If a world space modifier does not specify that it works on deformable

objects, the system is unable to transform the points of the object into world space. What it does instead is apply the transformation to the ObjectState TM. In this case, a world space modifier is responsible for transforming the points of the object into world space itself, and then setting the ObjectState TM to the identity. There is an example of this in the sample code for the Bomb space warp. The Bomb operates on TriObjects and implements InputType() as { return Class_ID(TRIOBJ_CLASS_ID,0); }. Since it doesn't specifically return defObjectClassID, it is thus responsible for transforming the points of the object into world space itself. It does this in its implementation of ModifyObject() as follows:

if (os->GetTM())
{
    Matrix3 tm = *(os->GetTM());
    for (int i=0; i<triOb->mesh.getNumVerts(); i++) {
        triOb->mesh.verts[i] = triOb->mesh.verts[i] *tm;
    }
    os->obj->UpdateValidity(GEOM_CHAN_NUM,os->tmValid());
    os->SetTM(NULL,FOREVER);
}

As the code above shows, the Bomb checks if the ObjectState TM is non-NULL. If it is, the points of the object are still not in world space and thus must be transformed. It does this by looping through the points of the TriObject and multiplying each point by the ObjectState TM. When it is done, it sets the ObjectState TM to NULL to indicate the points are now in world space. This ensure that any later WSMs will not transform the points with this matrix again.

For the Bomb world space modifier this is not a problem since it specifies

in its implementation of ChannelsChanged() that it will operate on the geometry channel (GEOM_CHANNEL). Certain world space modifiers may not normally specify GEOM_CHANNEL in their implementation of ChannelsChanged(). Consider the camera mapping world space modifier. Its function is to apply mapping coordinates to the object it is applied to. Thus it would normally only specify TEXMAP_CHANNEL for ChannelsChanged(). However, since it operates directly on TriObjects, just like the Bomb, the system cannot transform the points into world space, and therefore the camera mapping modifier must do so in its implementation of ModifyObject(). But since it is actually altering the points of the object by putting them into world space it is altering the geometry channel. Therefore, it should really specify GEOM_CHANNEL | TEXMAP_CHANNEL in its implementation of ChannelsChanged(). If it didn't do this, but went ahead and modified the points of the object anyway, it would be transforming not copies of the points, but the original points stored back in an earlier cache or even the base object.

This is the issue developers need to be aware of. To state this in simple

terms then: Any world space modifier that needs to put the points of the object into world space (since it doesn't implement InputType() as defObjectClassID) needs to specify GEOM_CHANNEL in its implementation of ChannelsChanged().

Parameters

t	The time at which to convert.
obtype	The Class_ID of the type of object to convert to. See Class Class_ID, Class IDs defined in plugapi.h.

Returns

A pointer to an object of type obtype.

Default Implementation:

{ return NULL; }

Sample Code:

The following code shows how a TriObject can be retrieved from a node. Note on the code that if you call ConvertToType() on an object and it returns a pointer other than itself, you are responsible for deleting that object.

// Retrieve the TriObject from the node
int deleteIt;
TriObject *triObject = GetTriObjectFromNode(ip->GetSelNode(0),deleteIt);
// Use the TriObject if available
if (!triObject) return;
// ...
// Delete it when done...
if (deleteIt) triObject->DeleteMe();

// Return a pointer to a TriObject given an INode or return NULL
// if the node cannot be converted to a TriObject
TriObject *Utility::GetTriObjectFromNode(INode *node, int &deleteIt)
{
    deleteIt = FALSE;
    Object *obj = node->EvalWorldState(0).obj;
    if (obj->CanConvertToType(Class_ID(TRIOBJ_CLASS_ID, 0))) {
        TriObject *tri = (TriObject *) obj->ConvertToType(0,Class_ID(TRIOBJ_CLASS_ID, 0));
// Note that the TriObject should only be deleted
// if the pointer to it is not equal to the object
// pointer that called ConvertToType()
        if (obj != tri) 
            deleteIt = TRUE;
        return tri;
    }
    else {
        return NULL;
    }
}

Reimplemented from Object.

CoreExport void FreeChannels ( ChannelMask  channels )

virtual

This method deletes the memory associated with the specified channels and set the intervals associated with the channels to invalid (empty).

Parameters

channels

Specifies the channels to free.

Reimplemented from Object.

CoreExport Object* MakeShallowCopy ( ChannelMask  channels )

virtual

This method must make a copy of its "shell" and then shallow copy (see below) only the specified channels.

It must also copy the validity intervals of the copied channels, and invalidate the other intervals.

Parameters

channels

The channels to copy.

Returns

A pointer to the shallow copy of the object.

Reimplemented from Object.

CoreExport void ShallowCopy ( Object *  fromOb, ChannelMask  channels  )

virtual

This method copies the specified channels from the fromOb to this and copies the validity intervals.

A plug-in needs to copy the specified channels from the specified object fromOb to itself by just copying pointers (not actually copying the data). No new memory is typically allocated, this method is just copying the pointers.

Parameters

fromOb	Object to copy the channels from.
channels	Channels to copy.

Reimplemented from Object.

CoreExport void NewAndCopyChannels ( ChannelMask  channels )

virtual

This method replaces the locked channels with newly allocated copies.

It will only be called if the channel is locked.

Parameters

channels

The channels to be allocate and copy.

Reimplemented from Object.

CoreExport DWORD GetSubselState ( )

virtual

For objects that have sub selection levels, this method returns the current selection level of the object.

For example, a TriObject has the following selection levels: object, vertex, face, edge. Other object types may have different selection levels. The only standard is that a value of 0 indicates object level. b>

Returns

The current selection level of the object.

Reimplemented from Object.

CoreExport void SetSubSelState ( DWORD  s )

virtual

Reimplemented from Object.

CoreExport BOOL CheckObjectIntegrity ( )

virtual

This method is used for debugging only.

The TriObject implements this method by making sure its face's vert indices are all valid.

Returns

TRUE if valid; otherwise FALSE.

Reimplemented from Object.

CoreExport int IntersectRay ( TimeValue  t, Ray &  r, float &  at, Point3 &  norm  )

virtual

This method is called to compute the intersection point and surface normal at this intersection point of the ray passed and the object.

Parameters

t	The time to compute the intersection.
r	Ray to intersect. See Class Ray.
at	The point of intersection.
norm	Surface normal at the point of intersection.

Returns

Nonzero if a point of intersection was found; otherwise 0.

See also

The Mesh class implementation of this method.

Reimplemented from Object.

CoreExport ObjectHandle CreateTriObjRep

(

TimeValue

t

)

CoreExport void GetWorldBoundBox ( TimeValue  t, INode *  inode, ViewExp *  vp, Box3 &  box  )

virtual

This method returns the world space bounding box for Objects (see below for the Sub-object gizmo or Modifiers gizmo version).

The bounding box returned by this method does not need to be precise. It should however be calculated rapidly. The object can handle this by transforming the 8 points of its local bounding box into world space and take the minimums and maximums of the result. Although this isn't necessarily the tightest bounding box of the objects points in world space, it is close enough.

Parameters

t	The time to compute the bounding box.
inode	The node to calculate the bounding box for.
vp	An interface pointer that can be used to call methods associated with the viewports.
box	Contains the returned bounding box.

Reimplemented from BaseObject.

CoreExport void GetLocalBoundBox ( TimeValue  t, INode *  inode, ViewExp *  vp, Box3 &  box  )

virtual

This is the object space bounding box, the box in the object's local coordinates.

The system expects that requesting the object space bounding box will be fast.

Parameters

t	The time to retrieve the bounding box.
inode	The node to calculate the bounding box for.
vp	An interface pointer that may be used to call methods associated with the viewports.
box	Contains the returned bounding box.

Reimplemented from BaseObject.

CoreExport Mesh* GetRenderMesh ( TimeValue  t, INode *  inode, View &  view, BOOL &  needDelete  )

virtual

This method should be implemented by all renderable GeomObjects.

It provides a mesh representation of the object for use by the renderer. Primitives that already have a mesh cached can just return a pointer to it (and set needDelete to FALSE). Implementations of this method which take a long time should periodically call View::CheckForRenderAbort() to see if the user has canceled the render. If canceled, the function can either return NULL, or return a non null pointer with the appropriate value for needDelete. (If needDelete is TRUE a non-null mesh will be deleted.)

Parameters

t	The time to get the mesh.
inode	The node in the scene.
view	If the renderer calls this method it will pass the view information here. See Class View.
needDelete	Set to TRUE if the renderer should delete the mesh, FALSE otherwise.

Returns

A pointer to the mesh object.

Reimplemented from GeomObject.

CoreExport BOOL CanDoDisplacementMapping ( )

virtual

Returns TRUE if this object can do displacement mapping; otherwise FALSE.

Reimplemented from GeomObject.

CoreExport TessApprox& DisplacmentApprox ( )

inline

Remarks

This method is available in release 3.0 and later only.

Returns a reference to the mDispApprox data member.

{ return mDispApprox; }

CoreExport bool& DoSubdivisionDisplacment ( )

inline

Remarks

This method is available in release 3.0 and later only.

Returns a reference to the boolean mSubDivideDisplacement data member.

{ return mSubDivideDisplacement; }

CoreExport bool& SplitMeshForDisplacement ( )

inline

Remarks

This method is available in release 3.0 and later only.

Returns a reference to the boolean mSplitMesh data member.

{ return mSplitMesh; }

CoreExport void SetDisplacmentApproxToPreset

(

int

preset

)

Remarks

This method is available in release 3.0 and later only.

This method is used internally to set the mDispApprox data member to one of the low/medium/high subdivision presets.

CoreExport void DisableDisplacementMapping

(

BOOL

disable

)

Remarks

This method is available in release 3.0 and later only.

Sets the mDisableDisplacement data member to the given state.

Parameters:

BOOL disable

TRUE to disable; FALSE to enable.

CoreExport void TopologyChanged ( )

virtual

Reimplemented from Object.

Mesh& GetMesh ( )

inline

Remarks

This method is available in release 3.0 and later only.

Returns a reference to the mesh data member of this TriObject.

{ return mesh; }

CoreExport void DeleteThis ( )

virtual

Deletes an instance of this class.

3ds Max calls this method when it needs to delete a plugin object (an instance of a class derived from Animatable). Similarly, plugins that need to delete instances of an Animatable or a class directly derived from it via an Animatable pointer, should call this method instead of calling directly operator delete. Following these rules will ensure that the same memory manager is used to allocate and deallocate the object. The default implementation of this method deletes the object. Plugin instances that never need to be deleted from the heap can overwrite this method to do nothing.

Note

See the method ClassDesc::Create() for details on how Max allocates plugin objects.

See ReferenceMaker::DeleteMe() and ReferenceTarget::MaybeAutoDelete() for information on how plugin instances are deleted by the system.

Remarks

See Memory Management.

See also

Required DLL Functions, Class ClassDesc.

Reimplemented from Animatable.

void FreeCaches ( )

inlinevirtual

Remarks

This is called to delete any item that can be rebuilt. For example, the procedural sphere object has a mesh that it caches. It could call Mesh::FreeAll() on the mesh from this method. This will free the vertex/face/uv arrays. If the sphere is ever evaluated again it can just rebuild the mesh. If an object (like a sphere) has modifiers applied to it, and those modifiers are not animated, then the result of the pipeline is cached in the node. So there is no reason for the sphere to also have a cache of its representation. Therefore when this method is called, the sphere can free the data of the mesh.

Default Implementation:

{}

Reimplemented from Animatable.

{mesh.InvalidateGeomCache(); }

Class_ID ClassID ( )

inlinevirtual

Retrieves a constant that uniquely identifies the plugin class.

This method must return the unique ID for the plugin class. If two ClassIDs conflict, the system will only load the first conflicting one it finds. A program (gencid.exe) is provided to generate unique class id values.

Returns

A class id that uniquely identifies a plugin class

See also

Class ClassID, class ID definititions in plugapi.h.

Reimplemented from Animatable.

{ return Class_ID(TRIOBJ_CLASS_ID,0); }

void GetClassName ( MSTR &  s )

inlinevirtual

Retrieves the (localizable) name of the plugin class.

This name is usually used internally for debugging purposes. For Material plug-ins this method is used to put up the material "type" name in the Material Editor.

Parameters

s	Reference to a string filled in with the name of the plugin class

Reimplemented from ReferenceTarget.

{ s = MSTR(_M("TriObject")); }

void NotifyMe ( Animatable *  subAnim, int  message  )

inline

{ UNUSED_PARAM(subAnim); UNUSED_PARAM(message);}

int IsKeyable ( )

inline

{ return 0;}

int Update ( TimeValue  t )

inline

{ UNUSED_PARAM(t); return 0; }

const MCHAR* GetObjectName ( )

inlinevirtual

Returns

the name that will appear in the history browser (modifier stack).

Reimplemented from BaseObject.

{ return _M("Mesh"); }

CoreExport void RescaleWorldUnits ( float  f )

virtual

Rescale size of all world units in reference hierarchy.

This method is available in release 2.0 and later only. Must call ClearAFlagInHierarchy(rm, A_WORK1) or ClearAFlagInAllAnimatables(A_WORK1) before doing this on a reference hierarchy. This may be implemented to rescale the size of all world units in a reference hierarchy. Developers must call

if (TestAFlag(A_WORK1))
    return;
SetAFlag(A_WORK1);

before doing this on a reference hierarchy.

Parameters

f	- The scale factor.

Reimplemented from ReferenceMaker.

CoreExport IOResult Save ( ISave *  isave )

virtual

Called for saving data.

Called by the system to allow the plugin to save its data.

Parameters

isave

- This pointer may be used to call methods to write data to disk. See the section on Loading and Saving Plug-in Data for an overview of the load/save process.

Returns

The default implementation is return IO_OK.

• IO_OK means the result was acceptable, with no errors.
• IO_ERROR This should be returned if an error occurred.

Reimplemented from ReferenceMaker.

CoreExport IOResult Load ( ILoad *  iload )

virtual

Called for loading data.

Called by the system to allow the plug-in to load its data. See the section on Loading and Saving Plug-in Data for an overview of the load - save process.

Parameters

iload

- This interface pointer may be used to call methods to read data from disk.

Returns

The default implementation is return IO_OK.

• IO_OK means the result was acceptable, with no errors.
• IO_ERROR This should be returned if an error occurred.

Reimplemented from ReferenceMaker.

CoreExport void ReduceDisplayCaches ( )

virtual

Should reduce any derived display data to save memory, since the node wont be drawn until the user undhides it.

This function should delete any derived data used to display the object such as gfx normals, direct mesh caches etc. This is typicallly called when the user hides the node or sets it as bounding box

Reimplemented from Object.

CoreExport bool NeedGWCacheRebuilt ( GraphicsWindow *  gw, Material *  ma, int  numMat  )

virtual

This returns whether the Graphics Cache for this object needs to be rebuilt.

Parameters:

GraphicsWindow *gw the active graphics window
Material *ma the material aray assigned to the mesh
int numMat the number of materials in the material array

Reimplemented from Object.

CoreExport void BuildGWCache ( GraphicsWindow *  gw, Material *  ma, int  numMat, BOOL  threaded  )

virtual

This builds the graphics window cached mesh.

Parameters:

GraphicsWindow *gw the active graphics window
Material *ma the material aray assigned to the mesh
int numMat the number of materials in the material array
BOOL threaded whether when building the cache it can use additional threads. This is needed since the system may be creating many meshes at the same time

Reimplemented from Object.

Member Data Documentation

Interval geomValid

protected

Interval topoValid

protected

Interval texmapValid

protected

Interval selectValid

protected

Interval vcolorValid

protected

Interval gfxdataValid

protected

ChannelMask validBits

protected

Mesh mesh

TessApprox mDispApprox

bool mSubDivideDisplacement

bool mDisableDisplacement

bool mSplitMesh