Mesh Class Reference
#include <mesh.h>
Class Description
The Mesh class is provided for use by plug-ins and is used by the system.
It is the data structure for meshes in the system and maintains pointers to the vertices, faces, texture vertices, etc. It provides methods to handle most of the functionality that procedural objects must implement. All methods of this class are implemented by the system. See the Meshes section for more information. Note: There is a set of classes for working with parts of a mesh such as its face structure, element structure, and cluster structure. For details see: Class AdjEdgeList, Class AdjFaceList, Class FaceElementList, Class FaceClusterList.
Inheritance diagram for Mesh:
Public Member Functions | |
| void | BuildGFXNormals () |
| DllExport | Mesh () |
| Constructor. More... | |
| DllExport | Mesh (const Mesh &fromMesh) |
| Constructor. More... | |
| DllExport | ~Mesh () |
| Destructor. More... | |
| DllExport void | Init () |
| DllExport void | DeleteThis () |
| This method deletes this mesh. More... | |
| DllExport Mesh & | operator= (const Mesh &fromMesh) |
| Assignment operator. More... | |
| DllExport IOResult | Save (ISave *isave) |
| DllExport IOResult | Load (ILoad *iload) |
| DllExport Mesh | operator+ (Mesh &mesh) |
| Performs a boolean union operation. More... | |
| DllExport Mesh | operator- (Mesh &mesh) |
| Performs a boolean difference operation. More... | |
| DllExport Mesh | operator* (Mesh &mesh) |
| Performs a boolean intersection operation. More... | |
| DllExport void | MyDebugPrint () |
| DllExport void | ClearSpecifiedNormals () |
| DllExport MeshNormalSpec * | GetSpecifiedNormals () |
| DllExport void | SpecifyNormals () |
| DllExport void | CopyBasics (const Mesh &from) |
| DllExport BaseInterface * | GetInterface (Interface_ID id) |
| DllExport bool | isFaceCacheInvalid (int faceIndex) |
| The function first checks if the whole mesh or the face have been flagged as cache invalid (MESH_CACHEINVALID). More... | |
| DllExport void | InvalidateVertexCache (int vertex) |
| The function flags the specified vertex with the MESH_CACHEINVALID flag, telling the rebuild functions that this vertex, the faces surrounding it and the other vertices of those faces need to have their normals recomputed. More... | |
| DllExport void | SetStaticMesh (bool staticMesh) |
| This will set the mesh or as static or not. More... | |
| DllExport void | ReduceDisplayCaches () |
| This will force all the derived data used to display the mesh to be deleted. More... | |
| DllExport bool | NeedGWCacheRebuilt (GraphicsWindow *gw, Material *ma, int numMat) |
| This returns whether the Graphics Cache for this object needs to be rebuilt. More... | |
| DllExport void | BuildGWCache (GraphicsWindow *gw, Material *ma, int numMat, BOOL threaded) |
| This builds the graphics window cached mesh. More... | |
| DllExport void | GenerateRenderItems (MaxSDK::Graphics::IRenderItemContainer &renderItems, const MaxSDK::Graphics::GenerateMeshRenderItemsContext &generateRenderItemsContext) |
| Generate a set of render items according to the given render-item-generate context. More... | |
| DllExport void | GenerateDeferredRenderItems (MaxSDK::Graphics::IRenderItemContainer &renderItems, const MaxSDK::Graphics::GenerateMeshRenderItemsContext &generateRenderItemsContext) |
| Generate a set of render items according to the given render-item-generate context. More... | |
| DllExport void | SetNormalDataGenerator (INormalDataGenerator *normalDataGenerator) |
| DllExport INormalDataGenerator * | GetNormalDataGenerator () |
Vertex Methods | |
| DllExport BOOL | setNumVerts (int ct, BOOL keep=FALSE, BOOL synchSel=TRUE) |
| Sets the number of geometric vertices in the mesh. More... | |
| int | getNumVerts (void) const |
| Returns the number of vertices. More... | |
| void | setVert (int i, const Point3 &xyz) |
| Sets a single vertex in the verts array. More... | |
| void | setVert (int i, float x, float y, float z) |
| Sets a single vertex in the verts array. More... | |
| Point3 & | getVert (int i) |
| Returns the 'i-th' vertex. More... | |
| Point3 * | getVertPtr (int i) |
| Returns a pointer to the 'i-th' vertex. More... | |
Face Methods | |
| DllExport BOOL | setNumFaces (int ct, BOOL keep=FALSE, BOOL synchSel=TRUE) |
| Sets the number of faces in the mesh. More... | |
| int | getNumFaces (void) const |
| Returns the number of faces in the mesh. More... | |
Texture Vertex-Texture Face Methods | |
| DllExport BOOL | setNumTVerts (int ct, BOOL keep=FALSE) |
| Sets the number of texture vertices (in mapping channel 1). More... | |
| int | getNumTVerts (void) const |
| Returns the number of texture vertices (in mapping channel 1). More... | |
| DllExport BOOL | setNumTVFaces (int ct, BOOL keep=FALSE, int oldCt=0) |
| Sets the number of TVFaces. More... | |
| void | setTVert (int i, const UVVert &xyz) |
| Sets a single texture vertex in the tVerts array. More... | |
| void | setTVert (int i, float x, float y, float z) |
| Sets a single texture vertex in the tVerts array. More... | |
| UVVert & | getTVert (int i) |
| Returns the 'i-th' texture vertex. More... | |
| UVVert * | getTVertPtr (int i) |
| Returns a pointer to the 'i-th' texture vertex. More... | |
Color Per Vertex Methods | |
| DllExport BOOL | setNumVertCol (int ct, BOOL keep=FALSE) |
| Sets the number of color per vertex vertices. More... | |
| int | getNumVertCol () const |
| Returns the number of color per vertex vertices. More... | |
| DllExport BOOL | setNumVCFaces (int ct, BOOL keep=FALSE, int oldCt=0) |
| Sets the number of color per vertex faces. More... | |
| DllExport void | setVCDisplayData (int mapChan=0, VertColor *VCArray=NULL, TVFace *VCf=NULL) |
| This method would typically be called right before display, as with a node display callback, or through an extension object. More... | |
Multiple Map Support | |
| DllExport void | setNumMaps (int ct, BOOL keep=FALSE) |
| Set the number of texture maps used by this Mesh. More... | |
| int | getNumMaps () const |
| Returns the number of mapping channels in use. More... | |
| DllExport BOOL | mapSupport (int mp) const |
| Returns TRUE if the specified mapping channel is supported; otherwise FALSE. More... | |
| DllExport void | setMapSupport (int mp, BOOL support=TRUE) |
| Sets whether the specified mapping channels is supported or not. More... | |
| DllExport void | setNumMapVerts (int mp, int ct, BOOL keep=FALSE) |
| Sets the number of texture or vertex color vertices for the specified mapping channel of this mesh. More... | |
| DllExport int | getNumMapVerts (int mp) const |
| Returns the number of texture or vertex color vertices for the specified channel of this mesh. More... | |
| DllExport void | setNumMapFaces (int mp, int ct, BOOL keep=FALSE, int oldCt=0) |
| Sets the number of texture or vertex color faces for the specified channel of this mesh. More... | |
| DllExport UVVert * | mapVerts (int mp) const |
| Returns a pointer to the list of UVVerts for the specified channel of this mesh. More... | |
| DllExport TVFace * | mapFaces (int mp) const |
| Returns a pointer to the list of TVFaces for the specified channel of this mesh. More... | |
| void | setMapVert (int mp, int i, const UVVert &xyz) |
| Sets a single texture or vertex color value for the specified channel of this mesh. More... | |
| DllExport void | MakeMapPlanar (int mp) |
| Applies a simple planar mapping to the specified channel. More... | |
| DllExport BitArray | GetIsoMapVerts (int mp) |
| Returns a BitArray with a bit set for each isolated vertex (un-referenced by any face) for the specified channel. More... | |
| DllExport void | DeleteMapVertSet (int mp, BitArray set, BitArray *fdel=NULL) |
| Deletes the map vertices indicated. More... | |
| DllExport void | DeleteIsoMapVerts () |
| This method deletes each isolated vertex (un-referenced by any face) for the all active maps. More... | |
| DllExport void | DeleteIsoMapVerts (int mp) |
| This method deletes each isolated vertex (un-referenced by any face) for the specified channel. More... | |
| DllExport void | freeMapVerts (int mp) |
| Deallocates the texture or vertex color vertices for the specified channel of this mesh. More... | |
| DllExport void | freeMapFaces (int mp) |
| Deallocates the texture or vertex color faces for the specified channel of this mesh. More... | |
| MeshMap & | Map (int mp) |
| This method returns the map for the specified map channel. More... | |
Vertex Data Methods | |
| DllExport void | setNumVData (int ct, BOOL keep=FALSE) |
| Sets the number of channels of vertex data used by the mesh. More... | |
| int | getNumVData () const |
| Returns the number of vertex data channels maintained by this mesh. More... | |
| DllExport BOOL | vDataSupport (int vd) const |
| Returns TRUE if the specified channel of vertex data is available for this mesh; otherwise FALSE. More... | |
| DllExport void | setVDataSupport (int vd, BOOL support=TRUE) |
| Sets if the specified channel of vertex data is supported by this mesh. More... | |
| void * | vertexData (int vd) const |
| Returns a pointer to the vertex data for the specified channel or NULL if the channel is not supported. More... | |
| float * | vertexFloat (int vd) const |
| Returns a pointer to the floating point vertex data for the specified channel of this mesh or NULL if the channel is not supported. More... | |
| DllExport void | freeVData (int vd) |
| Deallocates the vertex data for the specified chanel. More... | |
| DllExport void | freeAllVData () |
| Deallocates the vertex data from all the channels and sets the number of supported channels to 0. More... | |
| float * | getVertexWeights () |
| Returns a pointer to the floating point vertex weight data. More... | |
| void | SupportVertexWeights () |
| Sets the channel support for the vertex weights channel (VDATA_WEIGHT). More... | |
| void | ClearVertexWeights () |
| Clears (deallocates) the vertex weights channel data. More... | |
| void | freeVertexWeights () |
| Deallocates the vertex weights channel data (same as ClearVertexWeights() above). More... | |
| float * | getVSelectionWeights () |
| Returns a pointer to the floating point vertex selection weights data. More... | |
| void | SupportVSelectionWeights () |
| Sets the channel support for the vertex weights channel (VDATA_SELECT). More... | |
| void | ClearVSelectionWeights () |
| Clears (deallocates) the vertex selection weights channel data. More... | |
| void | freeVSelectionWeights () |
| Deallocates the vertex selection weights channel data (same as ClearVSelectionWeights() above). More... | |
Normals/Smoothing/Edges/Face check Functions | |
| DllExport void | setSmoothFlags (int f) |
| This method should be called when the user has clicked on the 'Smooth' check box in a procedural object. More... | |
| DllExport int | getSmoothFlags () |
| Returns the state of the smooth flags. More... | |
| DllExport void | FlipNormal (int i) |
| Flips the surface normal of the 'i-th' face (this just rearranges the indices for the face structure). More... | |
| DllExport void | UnifyNormals (BOOL selOnly) |
| Unifies the surfaces normals of this Mesh. More... | |
| DllExport void | AutoSmooth (float angle, BOOL useSel, BOOL preventIndirectSmoothing=FALSE) |
| Performs an auto smooth on the mesh, setting the smoothing groups based on the surface normals. More... | |
| DllExport Edge * | MakeEdgeList (int *edgeCount, int flagdbls=0) |
| DllExport int | DeleteFlaggedFaces () |
| This method removes faces from the face list with the FACE_WORK flag set. More... | |
| DllExport void | DeleteSelected () |
| Deletes all selected elements of the current selection level. More... | |
| DllExport void | DeleteVertSet (BitArray set) |
| Deletes the vertices as specified by the BitArray. More... | |
| DllExport void | DeleteFaceSet (BitArray set, BitArray *isoVert=NULL) |
| Deletes faces as specified by the BitArray. More... | |
| DllExport BOOL | DoesFaceExist (DWORD v0, DWORD v1, DWORD v2) |
| This method may be called to determine if an equivalent face already exists. More... | |
| DllExport BOOL | RemoveDegenerateFaces () |
| Removes faces that have two or more equal indices. More... | |
| DllExport BOOL | RemoveIllegalFaces () |
| Removes faces that have indices that are out of range. More... | |
| DllExport Point3 | FaceNormal (DWORD fi, BOOL nrmlize=FALSE) |
| This method returns the normal of the specified face. More... | |
| DllExport Point3 | FaceCenter (DWORD fi) |
| This method returns the center of the specified face. More... | |
| DllExport float | AngleBetweenFaces (DWORD f0, DWORD f1) |
| Returns the angle between two face surface normals in radians. More... | |
| DllExport Point3 | BaryCoords (DWORD face, Point3 p) |
| Computes and returns the barycentric coordinates of a point in the plane of a face relative to that face. More... | |
| DllExport void | FaceCenterTessellate (BOOL ignoreSel=FALSE, MeshOpProgress *mop=NULL) |
| Tessellates the mesh (or only the selected faces) using the face/center method. More... | |
| DllExport void | EdgeTessellate (float tens, BOOL ignoreSel=FALSE, MeshOpProgress *mop=NULL) |
| Edge tessellates the mesh using the specified tension parameter. More... | |
| DllExport void | ExtrudeFaces (BOOL doFace=TRUE) |
| Extrudes the selected faces. More... | |
| DllExport void | IndentSelFaces (float amount) |
| Indents the selected faces, in a manner consistent with the outlining used in Bevel. More... | |
| DllExport void | BreakVerts (BitArray set) |
| Splits the vertices specified in the BitArray so that they are only used by a single face. More... | |
| DllExport BitArray | GetIsoVerts () |
| This method returns a BitArray (of size numVerts), where isolated verts are selected. More... | |
| DllExport void | DeleteIsoVerts () |
| Deletes the vertices that aren't used by any faces. More... | |
| DllExport void | CloneFaces (BitArray fset) |
| Creates a copy of the faces and verts used by those faces as specified by the BitArray passed. More... | |
| DllExport void | PolyFromFace (DWORD f, BitArray &set, float thresh, BOOL ignoreVisEdges, AdjFaceList *af=NULL) |
| Sets bits for all faces in the same polygon with face f. More... | |
| DllExport void | ElementFromFace (DWORD f, BitArray &set, AdjFaceList *af=NULL) |
| This method sets bits for all faces in the same "element", or connected component, with face f. More... | |
| DllExport void | FindVertsUsedOnlyByFaces (BitArray &fset, BitArray &vset) |
| When faces are deleted in Edit or Editable Mesh, we often want to be able to delete the verts that are isolated by this action. More... | |
| DllExport void | FindOpenEdges (BitArray &edges) |
| This method fills in a BitArray with the edges in the mesh that are "open" or "one-sided". More... | |
| DllExport void | FindVertexAngles (float *vang, BitArray *set=NULL) |
| This method calculates, for each vertex, the sum of the angles of this vertex's corner in each face it's on. More... | |
| void | SetRenderData (MeshRenderData *p) |
| Sets the mesh render data hung off this Mesh. More... | |
| MeshRenderData * | GetRenderData () |
| Returns the mesh render data hung off this Mesh. More... | |
Normals Methods | |
| DllExport void | setNormal (int i, const Point3 &xyz) |
| Sets a single 'rendered' normal in the rVerts array of RVertex instances. More... | |
| DllExport Point3 & | getNormal (int i) |
| Returns the 'i-th' 'rendered' normal from the rVerts array. More... | |
| DllExport void | setFaceNormal (int i, const Point3 &xyz) |
| Sets the 'i-th' face normal. More... | |
| DllExport Point3 & | getFaceNormal (int i) |
| Returns the 'i-th' face normal. More... | |
| DllExport Point3 * | getFaceNormalPtr (int i) |
| Returns a pointer to the 'i-th' face normal. More... | |
| DllExport void | buildNormals () |
| This method resolves the normals on the RVertex array. More... | |
| DllExport void | buildRenderNormals () |
| This method is similar to buildNormals() above, but ignores the material index (mtlIndex). More... | |
| DllExport void | checkNormals (BOOL illum) |
| This method can be used to build the normals and allocate RVert space only if necessary. More... | |
Render Vertex Methods | |
| DllExport RVertex & | getRVert (int i) |
| This method returns the 'i-th' RVertex. More... | |
| DllExport RVertex * | getRVertPtr (int i) |
| This method returns a pointer to the 'i-th' RVertex. More... | |
Material Methods | |
| DllExport MtlID | getFaceMtlIndex (int i) |
| Retrieves the zero based material index of the 'i-th' face. More... | |
| DllExport void | setFaceMtlIndex (int i, MtlID id) |
| Sets the material index of the 'i-th' face. More... | |
Render/Hit Test/Snap Methods | |
| DllExport void | render (GraphicsWindow *gw, Material *ma, RECT *rp, int compFlags, int numMat=1, InterfaceServer *is=NULL) |
| Renders this Mesh using the specified graphics window and array of materials. More... | |
| DllExport void | snap (GraphicsWindow *gw, SnapInfo *snap, IPoint2 *p, Matrix3 &tm) |
| Checks to see if there is a snap point near the given mouse point. More... | |
| void | displayNormals (int b, float sc) |
| Note that there may be more than one normal per vertex if faces that share the vertex are in non-overlapping smoothing groups. More... | |
Edge Methods | |
| void | displayAllEdges (int b) |
| Controls the display of hidden edges of this mesh object. More... | |
| DllExport void | InvalidateGeomCache () |
| Call this method after the geometry of this Mesh has changed. More... | |
| DllExport void | InvalidateTopologyCache () |
| Call this method after you alter vertex or face lists or revise edge visibility flags. More... | |
| DllExport void | FreeAll () |
| Cleans up the allocated arrays. More... | |
| DllExport void | ZeroTopologyCache () |
| DllExport void | EnableEdgeList (int e) |
| DllExport void | BuildVisEdgeList () |
| DllExport void | DrawVisEdgeList (GraphicsWindow *gw, DWORD vflags) |
| DllExport void | Draw3DVisEdgeList (GraphicsWindow *gw, DWORD vflags) |
| DllExport void | HitTestVisEdgeList (GraphicsWindow *gw, int abortOnHit) |
| DllExport void | InvalidateEdgeList () |
| DllExport void | DivideEdge (DWORD edge, float prop=.5f, bool visDiag1=TRUE, bool fixNeighbors=TRUE, bool visDiag2=TRUE) |
| Divides the edge, creating a new point. More... | |
| DllExport void | DivideFace (DWORD face, DWORD e1, DWORD e2, float prop1=.5f, float prop2=.5f, bool fixNeighbors=TRUE, bool split=FALSE) |
| Cuts a face into three faces, arranged as a quad and a triangle, by slicing from a point on one edge to a point on another. More... | |
| DllExport void | TurnEdge (DWORD edge, DWORD *otherEdge=NULL) |
| Turns an edge. More... | |
Bounding Box Methods | |
| DllExport void | buildBoundingBox (void) |
| Computes the bounding box of the Mesh. More... | |
| DllExport Box3 | getBoundingBox (Matrix3 *tm=NULL) |
| Retrieves the bounding box of the mesh object. More... | |
Strip Methods | |
| DllExport BOOL | BuildStrips () |
| It builds the strips database inside the mesh. More... | |
| DllExport void | Stripify (Strip *s, StripData *sd, int vtx) |
| DllExport void | Stripify (Strip *s, StripData *sd, int vtx, DWTab &v, DWTab &n, DWTab &tv) |
| DllExport void | getStripVertColor (GraphicsWindow *gw, int cv, int flipped, MtlID mID, DWORD smGroup, Point3 &rgb) |
| DllExport void | getStripNormal (int cv, MtlID mID, DWORD smGroup, Point3 &nor) |
| DllExport int | getStripNormalIndex (int cv, MtlID mID, DWORD smGroup) |
| DllExport BOOL | getStripTVert (GraphicsWindow *gw, int cv, int ctv, Point3 &uvw, int texNum=0) |
| DllExport void | DrawStrips (GraphicsWindow *gw, Material *ma, int numMat) |
| DllExport void | Draw3DStrips (GraphicsWindow *gw, Material *ma, int numMat) |
| DllExport void | Draw3DWireStrips (GraphicsWindow *gw, Material *ma, int numMat) |
| DllExport void | InvalidateStrips () |
| This method invalidates the strips database. More... | |
| DllExport void | BuildStripsAndEdges () |
| This method builds the strips and edges database inside the mesh. More... | |
Data Flow Evaluation Methods | |
| DllExport void | ShallowCopy (Mesh *amesh, ChannelMask channels) |
| Makes a copy of the specified channels of the specified Mesh object's data structures (but not all the data in these structures) into this Mesh. More... | |
| DllExport void | DeepCopy (Mesh *amesh, ChannelMask channels) |
| Makes a complete copy of the specified channels of the specified Mesh object (its data structures and all the data in these structures) into this Mesh. More... | |
| DllExport void | NewAndCopyChannels (ChannelMask channels) |
| This method replaces the specified channels with newly allocated copies. More... | |
| DllExport void | FreeChannels (ChannelMask channels, int zeroOthers=1) |
| Release the memory associated with the specified channels. More... | |
Mesh/Display Flags | |
| void | SetFlag (DWORD f) |
| Sets the state of the mesh flags. More... | |
| DWORD | GetFlag (DWORD f) |
| Returns the state of the specified mesh flags. More... | |
| void | ClearFlag (DWORD f) |
| Sets the state of the specified mesh flags to 0. More... | |
| void | SetDispFlag (DWORD f) |
| Sets the state of the display flags. More... | |
| DWORD | GetDispFlag (DWORD f) |
| Returns the state of the specified display flags. More... | |
| void | ClearDispFlag (DWORD f) |
| Sets the state of the specified display flags to 0. More... | |
Selection Access | |
| BitArray & | VertSel () |
| Retrieves the bits representing the vertex selection status. More... | |
| BitArray & | FaceSel () |
| Retrieves the bits representing the face selection status. More... | |
| DllExport BitArray | VertexTempSel () |
| Constructs a vertex selection list based on the current selection level. More... | |
Intersect Ray/Weld/Optimize/Apply Mapping | |
| DllExport void | WeldCollinear (BitArray &set) |
| DllExport void | Optimize (float normThresh, float edgeThresh, float bias, float maxEdge, DWORD vflags, MeshOpProgress *prog=NULL) |
| Allows this Mesh to be reduced in complexity by reducing the number of faces based on a surface normal threshold. More... | |
| DllExport 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 this Mesh with UVW mapping coordinates. More... | |
| DllExport void | ApplyMapper (UVWMapper &map, int channel=1) |
| Public Member Functions inherited from BaseInterfaceServer | |
| virtual UtilExport int | NumInterfaces () const |
| virtual UtilExport BaseInterface * | GetInterfaceAt (int i) const |
| virtual UtilExport | ~BaseInterfaceServer () |
| Public Member Functions inherited from InterfaceServer | |
| virtual UtilExport | ~InterfaceServer () |
| Destructor. More... | |
Public Attributes | |
| int | numVerts |
| Number of vertices. More... | |
| int | numFaces |
| Number of faces. More... | |
| Face * | faces |
| Number of faces. More... | |
| Point3 * | verts |
| Array of vertex coordinates. More... | |
| int | numTVerts |
| Number of texture vertices. More... | |
| UVVert * | tVerts |
| The array of texture vertices. More... | |
| TVFace * | tvFace |
| The array of texture faces. More... | |
| int | numCVerts |
| Number of color vertices. More... | |
| VertColor * | vertCol |
| Array of color vertices. More... | |
| TVFace * | vcFace |
| Array of color per vertex faces. More... | |
| int | curVCChan |
| Storage for the current mapping channel to use for vertex colors (default = 0). More... | |
| VertColor * | curVCArray |
| Points to storage for a possible external color array (default = NULL). More... | |
| TVFace * | curVCFace |
| possible external face array (default = NULL) More... | |
| VertColor * | vertColArray |
| When 3ds Max is rendering the color values come from this variable. More... | |
| TVFace * | vcFaceData |
| When 3ds Max is rendering the vertex color lookup comes from this structure. More... | |
| int | numMaps |
| The number of maps supported by the mesh. More... | |
| MeshMap * | maps |
| When the number of mapping channels is set to a value greater than 1 then an instance of this class is allocated for each channel up to numMaps. More... | |
| BitArray | vdSupport |
| This bit array indicates if a particular vertex data channel is supported in this mesh. More... | |
| PerData * | vData |
| The array of PerData objects which maintain and provide access to the floating point vertex data. More... | |
| MtlID | mtlIndex |
| object material More... | |
| BitArray | vertSel |
| Indicates the selected vertices. More... | |
| BitArray | faceSel |
| Indicates the selected faces. More... | |
| BitArray | edgeSel |
| Indicates the selected edges. More... | |
| BitArray | vertHide |
| Hidden flags for vertices. More... | |
| DWORD | dispFlags |
| Display attribute flags. More... | |
| DWORD | selLevel |
| Selection level flags. More... | |
| int | normalsBuilt |
| Nonzero if normals have been built for the current mesh; 0 otherwise. More... | |
| MeshRenderData * | renderData |
| Points to the render data used by the renderer. More... | |
| StripTab * | stab |
| depends on topo More... | |
| DWTab | norInd |
| indirection array for fast normal lookup More... | |
| int | normalCount |
| total number of normals More... | |
| Point3 * | gfxNormals |
| flattened list of normals pointers back in the rverts data. More... | |
| int | numTexCoords [GFX_MAX_TEXTURES] |
| Derived arrays to contain generated texture coordinates. More... | |
| Point3 * | texCoords [GFX_MAX_TEXTURES] |
| Derived arrays to contain generated texture coordinates. More... | |
| Tab< TriStrip * > * | tstab |
| Derived table of TriStrips, depends on topology. More... | |
| long * | vFlags |
| Holds flags specific to the corresponding vertex in the verts array. More... | |
Friends | |
| class | Face |
| class | MeshAccess |
| class | HardwareMesh |
| void | gfxCleanup (void *data) |
Space Accelerating Data Structure | |
These functions and member variable handle the space accelerating data structure used internally by Max system. 3ds Max 2017 release introduced the space accelerating data structure and algorithm to speed up the methods related to space looking-up. The space accelerating data can significantly improve the space looking-up algorithm, however the system may take some time to build the space accelerating data.It is recommended to use the following functions in the scenario of updating once then looking up multiple times. | |
| bool | checkFaceSel (int face_i, Mesh_SelParams ¶ms) |
| Invoke these methods to check the Sub-Objects associated with the face indexed by face_i is in the hit region. More... | |
| bool | checkFaceEdgesSel (int face_i, Mesh_SelParams ¶ms) |
| bool | checkVertSel (int vert_i, Mesh_SelParams ¶ms) |
| DllExport bool | IsAccelDataDirty () |
| Checks if the space accelerating data is up-to-date. More... | |
| DllExport void | DirtyAccelData () |
| Update the space accelerating data. More... | |
| DllExport BOOL | select (GraphicsWindow *gw, Material *ma, HitRegion *hr, int abortOnHit=FALSE, int numMat=1) |
| Checks the given HitRecord hr to see if it intersects this Mesh object. More... | |
| DllExport BOOL | SubObjectHitTest (GraphicsWindow *gw, Material *ma, HitRegion *hr, DWORD vflags, SubObjHitList &hitList, int numMat=1) |
| This method may be called to perform sub-object hit testing on this mesh. More... | |
| DllExport Point3 | ComputeRenderNormal (int face_i, int corner) |
| This function computes the render normal for the specified face and corner. More... | |
| DllExport Point3 | ComputeInterpolatedRenderNormal (int face_i, const Point3 &bary) |
| This function computes the interpolated normals regarding the barycentric coordinates. More... | |
| DllExport int | IntersectRay (Ray &ray, float &at, Point3 &norm) |
| Calculates the intersection of the specified ray with this mesh object. More... | |
| DllExport int | IntersectRay (Ray &ray, float &at, Point3 &norm, DWORD &fi, Point3 &bary) |
| Calculates the intersection of the specified ray with this mesh object. More... | |
| DllExport void * | GetSpaceAccelHandle () |
Additional Inherited Members | |
| 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... | |
| Protected Attributes inherited from BaseInterfaceServer | |
| Tab< BaseInterface * > | interfaces |
Constructor & Destructor Documentation
Constructor.
Initializes the mesh object. The mesh counts are set to 0 and its pointers are set to NULL.
Member Function Documentation
| void BuildGFXNormals | ( | ) |
Initializes the mesh object. The mesh counts are set to 0 and its pointers are set to NULL. Note: This method is not intended to be called by developers. It is used internally.
Assignment operator.
Note: This operator does not copy the rVerts array. This means that developers who have specified normals will have to explicitly copy them after a mesh assignment is done using this operator. This is because rVerts are instance-specific. In general, normals are computed from smoothing groups, and hence are "generated data". In the case where normals are specified, 3ds Max stores the data in the rVerts array so as to not waste space. The way 3ds Max uses the mesh = operator assumes that the rVerts are not copied, and thus developers must do the copying themselves.
- Parameters
-
fromMesh Specifies the mesh to copy.
Sets the number of geometric vertices in the mesh.
- Parameters
-
ct Specifies the number of vertices. keep Specifies if the previous vertices should be kept. If TRUE the previous vertices are kept; otherwise they are discarded. Defaults to FALSE. synchSel This parameter is available in release 2.0 and later only. If TRUE the selection set BitArrays are resized to fit the number of vertices; otherwise they are left unaltered. Defaults to TRUE.
- Returns
- TRUE if storage was allocated and the number of vertices was set; otherwise FALSE.
Returns the number of vertices.
Sets the number of faces in the mesh.
- Parameters
-
ct Specifies the number of faces. keep Specifies if the previous faces should be kept. If TRUE the previous faces are kept; otherwise they are discarded. Defaults to FALSE. synchSel If TRUE the selection set BitArrays are resized to fit the number of faces; otherwise they are left unaltered. Defaults to TRUE.
- Returns
- TRUE if storage was allocated and the number of faces was set; otherwise FALSE.
Returns the number of faces in the mesh.
Sets the number of texture vertices (in mapping channel 1).
- Parameters
-
ct Specifies the number of texture vertices. keep Specifies if the previous texture vertices should be kept. If TRUE the previous texture vertices are kept; otherwise they are discarded. Defaults to FALSE.
- Returns
- TRUE if storage was allocated and the number of texture vertices was set; otherwise FALSE.
Returns the number of texture vertices (in mapping channel 1).
Sets the number of TVFaces.
This method is automatically called if you set the number of faces to keep these two in sync (because the number of TVFaces should be the same as the number of faces). The following rules apply: If you have no TVFaces and keep is TRUE then the TVFaces array stays empty. If you have no TVFaces and keep is FALSE they are allocated. If you have TVFaces and ct = 0 then the TVFaces are freed.
- Parameters
-
ct The number of TVFaces. keep Specifies if the old faces should be kept. oldCt The length of the existing TVFaces array.
- Returns
- TRUE if storage has been allocated and the number is set; otherwise FALSE.
Sets the number of color per vertex vertices.
- Parameters
-
ct The number of color vertices to set. keep If TRUE previous values are kept; otherwise they are discarded.
- Returns
- TRUE if the value was set; otherwise FALSE.
|
inline |
Returns the number of color per vertex vertices.
Sets the number of color per vertex faces.
- Parameters
-
ct The number of color per vertex faces to set. keep Specifies if the old faces should be kept if the array is being resized. If FALSE they are freed. oldCt The length of the existing VCFaces array.
- Returns
- TRUE if storage has been allocated and the number is set; otherwise FALSE.
| DllExport void setVCDisplayData | ( | int | mapChan = 0, |
| VertColor * | VCArray = NULL, |
||
| TVFace * | VCf = NULL |
||
| ) |
This method would typically be called right before display, as with a node display callback, or through an extension object.
If mapChan parameter is set to MESH_USE_EXT_CVARRAY then the data in VCArray and TVFace is stored for internal use and consequent drawing. If the arrays are NULL then the internal source is used.
- Parameters
-
mapChan the mapping channel to use. VCArray An external array hosting the vertex colors VCf An external array of TVFace indexing into the color array
Set the number of texture maps used by this Mesh.
Note that this call is made automatically if Mesh::setMapSupport() is called.
- Parameters
-
ct The number of texture maps to use. This is a value between 2 and MAX_MESHMAPS-1. keep TRUE to keep the old mapping information after the resize; FALSE to discard it.
|
inline |
Returns the number of mapping channels in use.
Returns TRUE if the specified mapping channel is supported; otherwise FALSE.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values".
Sets whether the specified mapping channels is supported or not.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values". support TRUE to indicate the channel is supported; otherwise FALSE.
Sets the number of texture or vertex color vertices for the specified mapping channel of this mesh.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values". ct The number of vertices to allocate. keep If TRUE previous values are kept; otherwise they are discarded.
Returns the number of texture or vertex color vertices for the specified channel of this mesh.
- Parameters
-
mp Specifies the channel. See "List of Mapping Channel Index Values".
Sets the number of texture or vertex color faces for the specified channel of this mesh.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values". ct The number of faces to allocate. keep If TRUE previous values are kept; otherwise they are discarded. oldCt The length of the existing VCFaces array.
Returns a pointer to the list of UVVerts for the specified channel of this mesh.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values".
Returns a pointer to the list of TVFaces for the specified channel of this mesh.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values".
Sets a single texture or vertex color value for the specified channel of this mesh.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values". i The zero based index of the vertex to set. xyz The value to set.
Applies a simple planar mapping to the specified channel.
This is done by copying the mesh topology and vertex locations into the map.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values".
Returns a BitArray with a bit set for each isolated vertex (un-referenced by any face) for the specified channel.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values".
Deletes the map vertices indicated.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values". set Indicates which map verts should be deleted. set.GetSize() should equal this mesh's getNumMapVerts(mp). fdel If non-NULL, this points to a BitArray that will be filled in with the faces that will need to be deleted or have new map verts assigned because they used a map vert that was deleted. (The size will be set to this mesh's numFaces.)
This method deletes each isolated vertex (un-referenced by any face) for the all active maps.
This method deletes each isolated vertex (un-referenced by any face) for the specified channel.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values". The default value of -1 indicates to do all active maps.
Deallocates the texture or vertex color vertices for the specified channel of this mesh.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values".
Deallocates the texture or vertex color faces for the specified channel of this mesh.
- Parameters
-
mp Specifies the channel. See the page "List of Mapping Channel Index Values".
This method returns the map for the specified map channel.
- Parameters
-
mp The map channel.
Sets the number of channels of vertex data used by the mesh.
- Parameters
-
ct The number of elements of vertex data to set. keep If TRUE any old vertex data is kept; otherwise it is discarded.
|
inline |
Returns the number of vertex data channels maintained by this mesh.
Returns TRUE if the specified channel of vertex data is available for this mesh; otherwise FALSE.
- Parameters
-
vd The vertex data channel. See the page "List of Vertex Data Index Options".
Sets if the specified channel of vertex data is supported by this mesh.
- Parameters
-
vd The vertex data channel. See the page "List of Vertex Data Index Options". support TRUE to indicate the channel is supported; FALSE to indicate it's not. If TRUE is specified then numVerts elements are allocated (if needed). If FALSE is specified the data for the channel is freed.
Returns a pointer to the vertex data for the specified channel or NULL if the channel is not supported.
If supported then the size of this array is numVerts.
- Parameters
-
vd The vertex data channel. See the page "List of Vertex Data Index Options".
|
inline |
Returns a pointer to the floating point vertex data for the specified channel of this mesh or NULL if the channel is not supported.
If supported then the size of this array is numVerts.
- Parameters
-
vd The vertex data channel. See the page "List of Vertex Data Index Options".
Deallocates the vertex data for the specified chanel.
- Parameters
-
vd The vertex data channel. See the page "List of Vertex Data Index Options".
Deallocates the vertex data from all the channels and sets the number of supported channels to 0.
|
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Returns a pointer to the floating point vertex weight data.
|
inline |
Sets the channel support for the vertex weights channel (VDATA_WEIGHT).
|
inline |
Clears (deallocates) the vertex weights channel data.
|
inline |
Deallocates the vertex weights channel data (same as ClearVertexWeights() above).
|
inline |
Returns a pointer to the floating point vertex selection weights data.
|
inline |
Sets the channel support for the vertex weights channel (VDATA_SELECT).
|
inline |
Clears (deallocates) the vertex selection weights channel data.
|
inline |
Deallocates the vertex selection weights channel data (same as ClearVSelectionWeights() above).
This method should be called when the user has clicked on the 'Smooth' check box in a procedural object.
It invalidates the appropriate caches of the mesh so the display is updated properly. If this method is not called, the internal topology cache might prevent the mesh from appearing changed.
- Parameters
-
f Nonzero indicates smoothed; zero unsmoothed.
Returns the state of the smooth flags.
See setSmoothFlags() above.
Sets a single vertex in the verts array.
- Parameters
-
i A zero based index into the verts array of the vertex to store. xyz Specifies the coordinate of the vertex.
Sets a single vertex in the verts array.
- Parameters
-
i A zero based index into the verts array of the vertex to store. x Specifies the X coordinate of the vertex. y Specifies the Y coordinate of the vertex. z Specifies the Z coordinate of the vertex.
Returns the 'i-th' vertex.
- Parameters
-
i Specifies the index of the vertex to retrieve.
Returns a pointer to the 'i-th' vertex.
- Parameters
-
i Specifies the index of the vertex address to retrieve.
Sets a single texture vertex in the tVerts array.
- Parameters
-
i A zero based index into the tVerts array of the texture vertex to store. xyz Specifies the coordinate of the vertex.
Sets a single texture vertex in the tVerts array.
- Parameters
-
i A zero based index into the tVerts array of the texture vertex to store. x Specifies the X coordinate of the texture vertex. y Specifies the Y coordinate of the texture vertex. z Specifies the Z coordinate of the texture vertex.
Returns the 'i-th' texture vertex.
- Parameters
-
i Specifies the index of the texture vertex to retrieve.
Returns a pointer to the 'i-th' texture vertex.
- Parameters
-
i Specifies the index of the texture vertex address to retrieve.
Sets a single 'rendered' normal in the rVerts array of RVertex instances.
- Parameters
-
i A zero based index into the rVerts array of the normal to store. xyz The normal to store in device coordinates. This should be a unit vector.
Returns the 'i-th' 'rendered' normal from the rVerts array.
- Parameters
-
i A zero based index into the rVerts array of the normal to get.
Sets the 'i-th' face normal.
- Parameters
-
i A zero based index into the face normal array of the normal to store. xyz The face normal to store. This should be a unit vector.
Returns the 'i-th' face normal.
- Parameters
-
i Specifies the index of the face normal to retrieve.
Returns a pointer to the 'i-th' face normal.
- Parameters
-
i Specifies the index of the face normal to retrieve.
This method resolves the normals on the RVertex array.
If the Mesh already has normals at each vertex, the normal is just moved to the RVertex array. See Class RVertex and Class RNormal. If you are creating a Mesh by hand, after you are done specifying all the vertices and faces, this method should be called. This allocates the RVertex and RNormal database for the Mesh. This will allow you to query the Mesh and ask about normals on the vertices. Also, if you deform a Mesh (i.e. take one of the vertices and move it), you should call this method again. Actually, if you are only moving one normal you only need to smooth the polygons that share the vertex. However, there is no method to smooth a subset of a Mesh, you either have to do it by hand or call this method to smooth the entire Mesh. This method also builds the face normals for the mesh.
This method is similar to buildNormals() above, but ignores the material index (mtlIndex).
In other words, the difference between this and buildNormals() is that it doesn't look at the mtlIndex of the faces: normals of faces with the same smoothing group are averaged regardless.
This method can be used to build the normals and allocate RVert space only if necessary.
This is a very inexpensive call if the normals are already calculated. When illum is FALSE, only the RVerts allocation is checked (since normals aren't needed for non-illum rendering). When illum is TRUE, normals will also be built, if they aren't already. So, to make sure normals are built, call this with illum=TRUE.
- Parameters
-
illum If TRUE then normals are built. If FALSE then only the RVert array is allocated.
Retrieves the zero based material index of the 'i-th' face.
- Parameters
-
i Specifies the face index. This is the zero based index into the faces array.
Sets the material index of the 'i-th' face.
- Parameters
-
i Specifies the face index. This is the zero based index into the faces array. id The material index for the 'i-th' face.
| DllExport void render | ( | GraphicsWindow * | gw, |
| Material * | ma, | ||
| RECT * | rp, | ||
| int | compFlags, | ||
| int | numMat = 1, |
||
| InterfaceServer * | is = NULL |
||
| ) |
Renders this Mesh using the specified graphics window and array of materials.
Note: If a display routine makes multiple calls to this method you need to have called: gw->setMaterial(inode->Mtls()[0]); before calling Mesh::render(). If you don't then you may get the wrong material for material ID 0.
- Parameters
-
gw Points to the graphics window to render to. ma The list of materials to use to render the mesh. See Class Material and the topic "Class INode - Material methods". rp Specifies the rectangular region to render. If the mesh should be rendered to the entire viewport pass NULL. compFlags One or more of the following flags: - COMP_TRANSFORM Forces recalculation of the model to screen transformation; otherwise attempt to use the cache.
- COMP_IGN_RECT Forces all polygons to be rendered; otherwise only those intersecting the box will be rendered.
- COMP_LIGHTING Forces re-lighting of all vertices (as when a light moves); otherwise only re-light moved vertices
- COMP_ALL All of the above flags.
- COMP_OBJSELECTED If this bit is set then the node being displayed by this mesh is selected. Certain display flags only activate when this bit is set.
numMat The number of materials for the mesh. is This pointer to an InterfaceServer can be used to get hold of the IXTCAccess pointer. And IXTCAccess interface can also be obtained from the object by calling Object::GetInterface (IXTCACCESS_INTERFACE_ID).
- Sample Code:
- The following code shows this method being used to render the mesh as part of the SimpleObject implementation of the BaseObject::Display() method: {if (!OKtoDisplay(t))return 0;GraphicsWindow *gw = vpt->getGW();Matrix3 mat = inode->GetObjectTM(t);UpdateMesh(t); // UpdateMesh() just calls BuildMesh()gw->setTransform(mat);mesh.render(gw, inode->Mtls(), (flags&USE_DAMAGE_RECT) ? &vpt->GetDammageRect() : NULL, COMP_ALL, inode->NumMtls());return(0);}
Checks to see if there is a snap point near the given mouse point.
- Parameters
-
gw The graphics window in which to check. snap This structure describes the snap settings used, and the results of the snap test. See the title "Structure SnapInfo". p The mouse point to check. tm The object transformation matrix. This is the transformation to place the object into the world coordinate system.
- Sample Code:
- Checks to see if there is a snap point near the given mouse point. {// Grab the object TMMatrix3 tm = inode->GetObjectTM(t);// Grab the graphics windowGraphicsWindow *gw = vpt->getGW();// Make sure our mesh is up to dateUpdateMesh(t); // UpdateMesh() just calls BuildMesh()// Set the transform in the GWgw->setTransform(tm);// Let the mesh do the work...mesh.snap( gw, snap, p, tm );}
Note that there may be more than one normal per vertex if faces that share the vertex are in non-overlapping smoothing groups.
In this case, all normals associated with the given vertex are drawn.
- Parameters
-
b Nonzero to display the normals; zero to turn off normals display. This can be a combination of MESH_DISP_FACE_NORMALS and MESH_DISP_VERTEX_NORMALS. (The arguments may be or'ed together to display both.) For backwards compatibility, MESH_DISP_FACE_NORMALS is defined to be 1, so sending in TRUE will turn on display of face normals, as before. sc This specifies the length that should be used (in world units) to display the normals. Since all normals start out with length equal to 1 they probably would be too small to see unless they were scaled
Controls the display of hidden edges of this mesh object.
This just sets the Boolean in the mesh that controls whether "hidden" edges (for instance the diagonals on the sides of a cube) are displayed.
- Parameters
-
b Nonzero to display all the hidden edges; otherwise zero.
Call this method after the geometry of this Mesh has changed.
It invalidates the bounding box, and tosses out the cached normals and edge list.
Call this method after you alter vertex or face lists or revise edge visibility flags.
It will invalidate the edge and strip database maintained by the mesh.
Cleans up the allocated arrays.
This frees the Faces, Verts, TVerts, TVFaces, FaceMtlIndexList and invalidates the geometry cache.
| DllExport void DrawVisEdgeList | ( | GraphicsWindow * | gw, |
| DWORD | vflags | ||
| ) |
This is used internally.
| DllExport void Draw3DVisEdgeList | ( | GraphicsWindow * | gw, |
| DWORD | vflags | ||
| ) |
| DllExport void HitTestVisEdgeList | ( | GraphicsWindow * | gw, |
| int | abortOnHit | ||
| ) |
This is used internally.
Computes the bounding box of the Mesh.
If surface normals are displayed, they are taken into account in the computation of the box. The bounding box is stored with the Mesh object, use getBoundingBox() to retrieve it.
Retrieves the bounding box of the mesh object.
- Parameters
-
tm The optional TM allows the box to be calculated in any space. NOTE: This computation will be slower because all the points must be transformed.
- Returns
- The bounding box of the Mesh.
| DllExport BOOL BuildStrips | ( | ) |
It builds the strips database inside the mesh.
See the method BuildStripsAndEdges() below.
| DllExport void getStripVertColor | ( | GraphicsWindow * | gw, |
| int | cv, | ||
| int | flipped, | ||
| MtlID | mID, | ||
| DWORD | smGroup, | ||
| Point3 & | rgb | ||
| ) |
This method is used internally.
This method is used internally.
This method is used internally.
| DllExport void DrawStrips | ( | GraphicsWindow * | gw, |
| Material * | ma, | ||
| int | numMat | ||
| ) |
This method is used internally.
| DllExport void Draw3DStrips | ( | GraphicsWindow * | gw, |
| Material * | ma, | ||
| int | numMat | ||
| ) |
This method is used internally.
| DllExport void Draw3DWireStrips | ( | GraphicsWindow * | gw, |
| Material * | ma, | ||
| int | numMat | ||
| ) |
This method builds the strips and edges database inside the mesh.
When developers create a new mesh for display then this method should be called. See the Mesh Stripping topic in the Meshes section for more information about this method.
| DllExport void ShallowCopy | ( | Mesh * | amesh, |
| ChannelMask | channels | ||
| ) |
Makes a copy of the specified channels of the specified Mesh object's data structures (but not all the data in these structures) into this Mesh.
For example the verts, tVerts, tvFaces, ... are not copied.
- Parameters
-
amesh Specifies the source Mesh to copy. channels Specifies the channels to copy. See Object Channels.
| DllExport void DeepCopy | ( | Mesh * | amesh, |
| ChannelMask | channels | ||
| ) |
Makes a complete copy of the specified channels of the specified Mesh object (its data structures and all the data in these structures) into this Mesh.
- Parameters
-
amesh Specifies the source Mesh to copy. channels Specifies the channels to copy. See Object Channels.
| DllExport void NewAndCopyChannels | ( | ChannelMask | channels | ) |
This method replaces the specified channels with newly allocated copies.
- Parameters
-
channels Specifies the channels to copy. See Object Channels.
| DllExport void FreeChannels | ( | ChannelMask | channels, |
| int | zeroOthers = 1 |
||
| ) |
Release the memory associated with the specified channels.
For example if the TOPO_CHANNEL is specified the faces are freed, if the GEOM_CHANNEL is specified the vertices are freed, etc.
- Parameters
-
channels Specifies the channels to free. Channels not specified are left intact. See Object Channels. zeroOthers If nonzero then the various pointers are set to NULL and their counts are zeroed. For example faces, verts, tVerts, and tvFace are set to NULL and numFaces, numVerts and numTVerts are set to 0. If this is passed as 0, these pointers and counts are left unaltered.
|
inline |
Sets the state of the mesh flags.
- Parameters
-
f Specifies the flags to set. See Mesh, Vertex and Face Flags
|
inline |
Returns the state of the specified mesh flags.
See Data Members: above for a list of the mesh flags.
- Parameters
-
f Specifies the flags to retrieve. See Mesh, Vertex and Face Flags
|
inline |
Sets the state of the specified mesh flags to 0.
- Parameters
-
f Specifies the flags to clear. See Mesh, Vertex and Face Flags
|
inline |
Sets the state of the display flags.
See Data Members: above for a list of the display flags.
- Parameters
-
f Specifies the flags to set.
|
inline |
Returns the state of the specified display flags.
See Data Members: above for a list of the display flags.
- Parameters
-
f Specifies the flags to retrieve.
|
inline |
Sets the state of the specified display flags to 0.
- Parameters
-
f Specifies the flags to clear.
|
inline |
Retrieves the bits representing the vertex selection status.
See Data Members: above.
- Returns
- The vertex selection status.
|
inline |
Retrieves the bits representing the face selection status.
- Returns
- The face selection status.
Constructs a vertex selection list based on the current selection level.
For example if the selection level is at object level all the bits are set (vertices, faces and edges). If the selection level is at vertex level only the selected vertex bits are set.
- Returns
- A BitArray reflecting the current selection level.
- Sample Code:
- BitArray sel = mesh->VertexTempSel();for ( int i = 0; i < mesh->getNumVerts(); i++ ){if ( sel[i] ) {...}}
| DllExport void Optimize | ( | float | normThresh, |
| float | edgeThresh, | ||
| float | bias, | ||
| float | maxEdge, | ||
| DWORD | vflags, | ||
| MeshOpProgress * | prog = NULL |
||
| ) |
Allows this Mesh to be reduced in complexity by reducing the number of faces based on a surface normal threshold.
Adjacent faces whose difference in surface normal angle falls below the specified threshold will be collapsed into a single triangle. The Mesh may also have its edge visibility set based on a surface normal threshold.
- Parameters
-
normThresh When the angle between adjacent surface normals is less than this value the optimization is performed. This angle is specified in radians. edgeThresh When the angle between adjacent surface normals is less than this value the auto edge is performed (if the OPTIMIZE_AUTOEDGE flag is set). This angle is specified in radians. bias When optimizing mesh objects, as the optimization increases, you can get lots of long skinny 'degenerate' triangles (that cause rendering artifacts). Increasing the bias parameter keeps triangles from becoming degenerate. The range of values is from 0 to 1 (where 0 turns bias off). Values close to 1 reduce the amount of optimization in favor of maintaining equilateral triangles. maxEdge This parameter is available in release 2.0 and later only. This will prevent the optimize function from creating edges longer than this value. If this parameter is <=0 no limit is placed on the length of the edges. vflags These flags control the optimization. Specify zero or more of the Optimization Flags prog A callback used for lengthy optimize operations. See Class MeshOpProgress.
| DllExport 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 this Mesh with UVW mapping coordinates.
- 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 parameter is available in release 2.0 and later only. This indicates which channel the mapping is applied to – channel==1 corresponds to the original texture mapping channel.
Flips the surface normal of the 'i-th' face (this just rearranges the indices for the face structure).
This also makes sure the edge flags are rearranged as well. If there are UV coordinates they are rearranged appropriately.
- Parameters
-
i The index of the face to flip.
Unifies the surfaces normals of this Mesh.
This may be for selected faces, or the entire mesh.
- Parameters
-
selOnly If TRUE only the selected faces are unified.
Performs an auto smooth on the mesh, setting the smoothing groups based on the surface normals.
- Parameters
-
angle The minimum angle between surface normals for smoothing to be applied, in radians. useSel If TRUE only the selected faces are smoothed. preventIndirectSmoothing This parameter is available in release 2.0 and later only. TRUE to turn on; FALSE to leave off. This matches the option in the Smooth Modifier UI – use this to prevent smoothing 'leaks" when using this method. If you use this method, and portions of the mesh that should not be smoothed become smoothed, then try this option to see if it will correct the problem. Note that the problem it corrects is rare, and that checking this slows the Auto Smooth process.
This method removes faces from the face list with the FACE_WORK flag set.
- Returns
- The number of faces deleted.
Deletes the vertices as specified by the BitArray.
- Parameters
-
set Set of bits to indicate the vertices to delete.
Deletes faces as specified by the BitArray.
- Parameters
-
set Set of bits to indicate the faces to delete. isoVert If non NULL then this method will be setup to flag vertices that were isolated by the face deletion. This set can then be passed to DeleteVertSet() to delete isolated vertices.
| DllExport BOOL DoesFaceExist | ( | DWORD | v0, |
| DWORD | v1, | ||
| DWORD | v2 | ||
| ) |
This method may be called to determine if an equivalent face already exists.
- Parameters
-
v0 Index of the first vertex. v1 Index of the second vertex. v2 Index of the third vertex.
- Returns
- TRUE if an equivalent face already exists; otherwise FALSE.
| DllExport BOOL RemoveDegenerateFaces | ( | ) |
Removes faces that have two or more equal indices.
- Returns
- TRUE if any degenerate faces were found; otherwise FALSE.
| DllExport BOOL RemoveIllegalFaces | ( | ) |
Removes faces that have indices that are out of range.
- Returns
- TRUE if any illegal faces were found; otherwise FALSE.
This method returns the normal of the specified face.
If nrmlize is TRUE, it makes this normal unit length. Otherwise, it's the edge cross-product length, which is actually 2 times the area of the face.
- Parameters
-
fi Specifies the face whose normal is returned. nrmlize Use TRUE to make the normal unit length.
This method returns the center of the specified face.
- Parameters
-
fi Specifies the face whose center is returned.
| DllExport float AngleBetweenFaces | ( | DWORD | f0, |
| DWORD | f1 | ||
| ) |
Returns the angle between two face surface normals in radians.
- Parameters
-
f0 Index of the first face. f1 Index of the second face.
Computes and returns the barycentric coordinates of a point in the plane of a face relative to that face.
- Parameters
-
face The index of the face to check. p The input point.
- Returns
- The point p barycentric coordinates. If the point p is inside the face the returned values will sum to one. Note: If the face (or set of 3 points) is degenerate, ie if it has a zero length normal vector ((p1-p0)^(p2-p0)), the methods return Point3(-1,1,1).
| DllExport void DivideEdge | ( | DWORD | edge, |
| float | prop = .5f, |
||
| bool | visDiag1 = TRUE, |
||
| bool | fixNeighbors = TRUE, |
||
| bool | visDiag2 = TRUE |
||
| ) |
Divides the edge, creating a new point.
The face directly using this edge (face edge/3) is also divided in two, and other faces using the edge may optionally be split to use the split edges.
- Parameters
-
edge The edge to divide. prop The proportion along the edge to make the division. An edge can be expressed as ff*3+ee, where ff is a face using this edge and ee represents which pair of vertices the edge is between, faces[ff]->v[ee] and faces[ff]->v[(ee+1)%3]. The new point is created at (1-prop) times the first vertex plus prop times the second. prop may vary from 0 to 1. prop=.5 gives the same result that DivideEdge (DWORD edge) would generate. visDiag1 Indicates whether the "diagonal" used to split the primary face this edge is on (edge/3) is visible or not. fixNeighbors Indicates whether other faces using this edge should also be split to use the two new edges, or if they should be left as they were. In a typical mesh, there is one other face using this edge, the face on the "other side" of the edge. If fixNeighbors is FALSE, the "other side" in this case would still use the original edge, while the face on this side would be split to use the two new edges. This would create a "hole" in the mesh. visDiag2 Indicates whether the "diagonals" used to split other faces using this edge are visible or not. This argument is not used if fixneighbors is FALSE.
| DllExport void DivideFace | ( | DWORD | face, |
| DWORD | e1, | ||
| DWORD | e2, | ||
| float | prop1 = .5f, |
||
| float | prop2 = .5f, |
||
| bool | fixNeighbors = TRUE, |
||
| bool | split = FALSE |
||
| ) |
Cuts a face into three faces, arranged as a quad and a triangle, by slicing from a point on one edge to a point on another.
- Parameters
-
face The face to be divided. e1,e2 The index of edges to be cut. For instance, if you wanted to cut from the edge between v[0] and v[1], to the edge between v[2] and v[0], you would use e1=0 and e2=2. prop1 The proportion along edge e1 to start cutting. prop2 The proportion along edge e2 to stop cutting. fixNeighbors Indicates whether faces also using the cut edges should be split to use the new, subdivided edges. split Indicates that the triangle and quad created by this action should use different vertices. If TRUE, the vertices created by the cut are duplicated, with one set being used for faces on one side and the other set being used by faces on the other side.
Turns an edge.
The quadrilateral formed by the triangles on either side of this edge essentially has its diagonal switched.
- Parameters
-
edge The edge to be turned. otherEdge If non-NULL, this should point to a variable in which the index of the "other side" of this edge should be stored. In essence, the two sides of an edge used by two faces, f1 and f2, are stored in two different locations, f1*3+e1 and f2*3+e2, where e1, e2 are 0, 1, or 2. This argument is provided so you have easy access to the other side of the edge, if desired, to make easy selection or visibility changes to the edge or other changes to the faces on both sides.
| DllExport void FaceCenterTessellate | ( | BOOL | ignoreSel = FALSE, |
| MeshOpProgress * | mop = NULL |
||
| ) |
Tessellates the mesh (or only the selected faces) using the face/center method.
This means each face is subdivided by lines from a new vertex at the center to the original vertices.
- Parameters
-
ignoreSel If TRUE the entire mesh is tessellated; otherwise only the selected faces. mop A callback that can be used for lengthy operations. If you want to get updated on the progress of the operation being performed, pass a pointer to your callback, and the function will call the MeshOpProgress methods as it progresses. The MeshOpProgress object can return FALSE to its MeshOpProgress::Progress method to cancel the operation.
| DllExport void EdgeTessellate | ( | float | tens, |
| BOOL | ignoreSel = FALSE, |
||
| MeshOpProgress * | mop = NULL |
||
| ) |
Edge tessellates the mesh using the specified tension parameter.
This method can operate on the entire mesh or only the selection set. Edge tessellation means that faces are internally subdivided, with additional faces generated from a new vertex in the middle of each face edge.
- Parameters
-
tens The tension setting. This value can range from -100.0 to 100.0. This value matches the parameter in the Editable Mesh user interface when tessellating faces. ignoreSel If TRUE the entire mesh is tessellated; otherwise only the selected faces. mop A callback that can be used for lengthy operations. If you want to get updated on the progress of the operation being performed, pass a pointer to your callback, and the function will call the MeshOpProgress methods as it progresses. The MeshOpProgress object can return FALSE to its MeshOpProgress::Progress method to cancel the operation.
Extrudes the selected faces.
Note that this is just a topological change. The new extruded faces do not change position but are left on top of the original faces.
- Parameters
-
doFace If TRUE the faces are extruded. If FALSE then the selected edges are extruded.
Indents the selected faces, in a manner consistent with the outlining used in Bevel.
- Parameters
-
amount The amount to indent.
Splits the vertices specified in the BitArray so that they are only used by a single face.
- Parameters
-
set This array of bits, one per vertex in the mesh. If the bit is set, the corresponding vertex in the mesh is copied as required so it is only used by a single face. If the bit is not set the vertex is ignored.
This method returns a BitArray (of size numVerts), where isolated verts are selected.
Creates a copy of the faces and verts used by those faces as specified by the BitArray passed.
If texture faces and vertex color faces are present they are cloned as well.
- Parameters
-
fset There is one bit in this array for each face in the mesh. If the bit is set, the corresponding face in the mesh is cloned. If the bit is zero the face is not cloned.
| DllExport void PolyFromFace | ( | DWORD | f, |
| BitArray & | set, | ||
| float | thresh, | ||
| BOOL | ignoreVisEdges, | ||
| AdjFaceList * | af = NULL |
||
| ) |
Sets bits for all faces in the same polygon with face f.
Faces already selected in set will not be processed – so if f is "set", nothing happens. The definition of a polygon is all faces sharing invisible edges with edge angles below "thresh".
- Parameters
-
f Specifies which face to evaluate – the zero based index into the faces array. set Specifies which faces are not processed. One bit for each face with set bits not considered. thresh The angle in radians which is the threshold for defining a polygon. A polygon is all faces sharing invisible edges with edge angles below this angle. ignoreVisEdges If TRUE, the edge visibility is ignored but the threshold is still relevant. af This adjacent face list can be passed if there's one handy; otherwise a new one will be computed by the method.
| DllExport void ElementFromFace | ( | DWORD | f, |
| BitArray & | set, | ||
| AdjFaceList * | af = NULL |
||
| ) |
This method sets bits for all faces in the same "element", or connected component, with face f.
Faces already selected in set will be considered "walls" for this processing and will not be evaluated.
- Parameters
-
f Specifies which face to evaluate – the zero based index into the faces array. set Specifies which faces are considered as barriers to the element and are not processed. One bit for each face with set bits not considered. af This adjacent face list can be passed if there's one handy; otherwise a new one will be computed by the method.
When faces are deleted in Edit or Editable Mesh, we often want to be able to delete the verts that are isolated by this action.
This method generates the list of verts that are used only by the specified set of faces.
This method calculates, for each vertex, the sum of the angles of this vertex's corner in each face it's on.
So for instance, a point lying in the middle of a grid would always have vertex angle 2*PI, whereas a corner of a box would only have 3*PI/2.
- Parameters
-
vang This should be a pointer to an array of size numVerts. The vertex angle for each vertex is put in this array (in radians). set If non-NULL, this points to a BitArray describing which vertices to find angles of. If only some bits are set, some computation time is saved. If NULL, all vertices' angles are found.
|
inline |
Sets the mesh render data hung off this Mesh.
This method and GetRenderData() allow the renderer to 'hang' data on a mesh. This data can be anything the renderer wants. The data will automatically be deleted when the mesh is deleted via the DeleteThis() method.
- Parameters
-
p
- See also
- Class MeshRenderData.
|
inline |
Returns the mesh render data hung off this Mesh.
See Class MeshRenderData. This method and SetRenderData() allow the renderer to 'hang' data on a mesh. This data can be anything the renderer wants. The data will automatically be deleted when the mesh is deleted via DeleteThis() .
| DllExport MeshNormalSpec* GetSpecifiedNormals | ( | ) |
|
virtual |
- Remarks
- This method returns a pointer to the BaseInterface of the specified interface.
- Parameters:
- Interface_ID id
The interface ID for which to return the BaseInterface.
Reimplemented from BaseInterfaceServer.
The function first checks if the whole mesh or the face have been flagged as cache invalid (MESH_CACHEINVALID).
If none of these is true, it then cycles through the face's vertices and returns true as soon as it finds a vertex flagged with MESH_CACHEINVALID.
- Precondition
- faceIndex must be a valid index in the faces (f) array.
- Parameters
-
faceIndex The index of the face for which you want to determine cache validity
- Returns
- true if the face is invalid, else false.
The function flags the specified vertex with the MESH_CACHEINVALID flag, telling the rebuild functions that this vertex, the faces surrounding it and the other vertices of those faces need to have their normals recomputed.
It also sets normalsBuilt to 0 to trigger normals' rebuild. This function should be called when one to several vertices have been modified. If all or almost all vertices of the mesh have been invalidated, it's more efficient to call InvalidateGeomCache() instead.
- Precondition
- vertex must be a valid index in the vertex (v) array.
- Parameters
-
vertex The index of the vertex that needs to be invalidated.
This will set the mesh or as static or not.
As static mesh has no animated channels. This allows use to certain display optimization since we know the mesh is not changing.
- Parameters
-
staticMesh Whether the mesh is to tagged static or not.
This will force all the derived data used to display the mesh to be deleted.
This data can be things like the gfx normals, the direct x mesh cache, tri stripping data etc.
| DllExport bool NeedGWCacheRebuilt | ( | GraphicsWindow * | gw, |
| Material * | ma, | ||
| int | numMat | ||
| ) |
This returns whether the Graphics Cache for this object needs to be rebuilt.
- Parameters
-
gw the active graphics window
ma the material array assigned to the mesh
numMat the number of materials in the material array
| DllExport void BuildGWCache | ( | GraphicsWindow * | gw, |
| Material * | ma, | ||
| int | numMat, | ||
| BOOL | threaded | ||
| ) |
This builds the graphics window cached mesh.
- Parameters
-
gw the active graphics window
ma the material array assigned to the mesh
numMat the number of materials in the material array
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
| DllExport void GenerateRenderItems | ( | MaxSDK::Graphics::IRenderItemContainer & | renderItems, |
| const MaxSDK::Graphics::GenerateMeshRenderItemsContext & | generateRenderItemsContext | ||
| ) |
Generate a set of render items according to the given render-item-generate context.
- Remarks
- Usually plugins use this function in their UpdateDisplay(). If plugins maintain copies of Mesh, then they should use this function to convert those mesh instances to render items (RenderItemHandle). This function generates mesh data immediately. Note for instance rendering: instance rendering is a way to draw many objects that use the same geometry. These objects share the same materials and modifiers. The only difference between objects is world transformation. You can specify a matrix array for the mesh, then the mesh will be drawn for many times. Each corresponds to a mesh in the array.
- Parameters
-
renderItems the container that accept newly generated render items. generateRenderItemsContext contains all the information that is used to generate all the required render items.
| DllExport void GenerateDeferredRenderItems | ( | MaxSDK::Graphics::IRenderItemContainer & | renderItems, |
| const MaxSDK::Graphics::GenerateMeshRenderItemsContext & | generateRenderItemsContext | ||
| ) |
Generate a set of render items according to the given render-item-generate context.
The mesh will be built in realize render item callback. So only use this function if the mesh is stable in current frame. It has better performance, because it only generates necessary data. For example, in wireframe mode, no normal data will be generated.
- Remarks
- Usually plugins use this function in their UpdateDisplay(). If plugins maintain copies of Mesh, then they should use this function to convert those mesh instances to render items (RenderItemHandle). Note for instance rendering: instance rendering is a way to draw many objects that use the same geometry. These objects shares same materials and modifiers. The only difference between objects is world transformation. You can specify a matrix array for the mesh, then the mesh will be drawn for many times. Each corresponds to a mesh in the array.
- Parameters
-
renderItems the container that accept newly generated render items. generateRenderItemsContext contains all the information that is used to generate all the required render items.
| DllExport INormalDataGenerator* GetNormalDataGenerator | ( | ) |
| bool checkFaceSel | ( | int | face_i, |
| Mesh_SelParams & | params | ||
| ) |
Invoke these methods to check the Sub-Objects associated with the face indexed by face_i is in the hit region.
The detailed parameters are in SelectionCheckParams structure. Currently these methods are not exposed in SDK.
| bool checkFaceEdgesSel | ( | int | face_i, |
| Mesh_SelParams & | params | ||
| ) |
| bool checkVertSel | ( | int | vert_i, |
| Mesh_SelParams & | params | ||
| ) |
| DllExport bool IsAccelDataDirty | ( | ) |
Checks if the space accelerating data is up-to-date.
- Remarks
- Invoking InvalidateGeomCache() or InvalidateTopologyCache() will dirty the space accelerating data.
Update the space accelerating data.
- Remarks
- This function should only be invoked when the plug-in needs to invoke following methods before InvalidateGeomCache() or InvalidateTopologyCache() gets invoked.
| DllExport BOOL select | ( | GraphicsWindow * | gw, |
| Material * | ma, | ||
| HitRegion * | hr, | ||
| int | abortOnHit = FALSE, |
||
| int | numMat = 1 |
||
| ) |
Checks the given HitRecord hr to see if it intersects this Mesh object.
- Parameters
-
gw Points to the graphics window to check. ma The list of materials for the mesh. hr This describes the properties of a region used for the hit testing. See Class HitRegion. abortOnHit If nonzero, the hit testing is complete after any hit; otherwise all hits are checked. numMat The number of materials for the mesh.
- Returns
- TRUE if the item was hit; otherwise FALSE.
| DllExport BOOL SubObjectHitTest | ( | GraphicsWindow * | gw, |
| Material * | ma, | ||
| HitRegion * | hr, | ||
| DWORD | vflags, | ||
| SubObjHitList & | hitList, | ||
| int | numMat = 1 |
||
| ) |
This method may be called to perform sub-object hit testing on this mesh.
- Parameters
-
gw The graphics window associated with the viewport the mesh is being hit tested in. ma The list of materials for the mesh. See Class Material and the topic "Class INode - Material methods". hr This describes the properties of a region used for the hit testing. See Class HitRegion. vflags Flags for sub object hit testing. One or more of the flags in Flags for Sub Object Hit Test hitList The results are stored here. See Class SubObjHitList. numMat The number of materials for the mesh.
- Returns
- TRUE if the item was hit; otherwise FALSE.
This function computes the render normal for the specified face and corner.
Unlike the method of buildNormals() and buildRenderNormals(), this function does not rely on whole RVertex array to achieve normal computation, which means it is lightweight and it quite efficent to do the normal computation for a given face and corner index. The only limitation is that this function will update the space accelerating structure if it is needed.
- Parameters
-
face_i The index to the face. corner The corner index within the face(must between 0 and 2 inclusively)
This function computes the interpolated normals regarding the barycentric coordinates.
- Parameters
-
face_i The index to the face. bary The input barycentric coordinates to compute the interpolated normal.
Calculates the intersection of the specified ray with this mesh object.
This allows Mesh objects to easily implement the Object::IntersectRay() method.
- Parameters
-
ray Specifies the origin and direction of the ray to intersect with the mesh. See Class Ray. at The computed point of intersection on the surface of the mesh. norm The face normal at the point of intersection (at).
- Returns
- Nonzero if the ray intersected the mesh object; otherwise 0. Note that this method ignores backfaces when computing the result.
Calculates the intersection of the specified ray with this mesh object.
This new version also returns the face index that was intersected and the barycentric coordinates of that face. Barycentric coordinates are the coordinates relative to the triangular face. The barycentric coordinates of a point p relative to a triangle describe that point as a weighted sum of the vertices of the triangle. If the barycentric coordinates are b0, b1, and b2, then: p = b0*p0 + b1*p1 + b2*p2; where p0, p1, and p2 are the vertices of the triangle. The Point3 returned by this method has the barycentric coordinates stored in its three coordinates. These coordinates are relative to the triangular face that was intersected. These barycentric coordinates can be used to interpolate any quantity whose value is known at the vertices of the triangle.
- Parameters
-
ray Specifies the origin and direction of the ray to intersect with the mesh. See Class Ray. at The computed point of intersection on the surface of the mesh. norm The face normal at the point of intersection (at). fi The face index of the face that was intersected is returned here. bary The barycentric coordinates of the face that was hit.
- Returns
- Nonzero if the ray intersected the mesh object; otherwise 0.
Friends And Related Function Documentation
|
friend |
|
friend |
|
friend |
Member Data Documentation
| int numVerts |
Number of vertices.
| int numFaces |
Number of faces.
| Face* faces |
Number of faces.
| Point3* verts |
Array of vertex coordinates.
| int numTVerts |
Number of texture vertices.
| UVVert* tVerts |
The array of texture vertices.
This stores the UVW coordinates. For a 2D mapping only two of them are used, i.e. UV, VW, or WU. This just provides greater flexibility so the user can choose to use UV, VW, or WU. Note: typedef Point3 UVVert;
| TVFace* tvFace |
The array of texture faces.
There needs to be one TVFace for every face, but there can be three indices into the UVVert array that are any UVs. Each face of the object can have its own mapping.
| int numCVerts |
Number of color vertices.
| VertColor* vertCol |
Array of color vertices.
| TVFace* vcFace |
Array of color per vertex faces.
| int curVCChan |
Storage for the current mapping channel to use for vertex colors (default = 0).
| VertColor* curVCArray |
Points to storage for a possible external color array (default = NULL).
This can be either an external array or one of the mapping channels. See the method Mesh::setVCDisplayData();
| TVFace* curVCFace |
possible external face array (default = NULL)
| VertColor* vertColArray |
When 3ds Max is rendering the color values come from this variable.
This array defaults to the internal vertCol but can be set to an external array, or a map channel. See the method Mesh::setVCDisplayData();
| TVFace* vcFaceData |
| int numMaps |
The number of maps supported by the mesh.
By default this is 2 but may be changed with the multiple map functions in this class.
| MeshMap* maps |
When the number of mapping channels is set to a value greater than 1 then an instance of this class is allocated for each channel up to numMaps.
An instance maintains the mapping information for a single channel.
| BitArray vdSupport |
This bit array indicates if a particular vertex data channel is supported in this mesh.
If the bit is set the channel is supported.
| PerData* vData |
| MtlID mtlIndex |
object material
| BitArray vertSel |
Indicates the selected vertices.
There is one bit for each vertex. Bits that are 1 indicate the vertex is selected.
| BitArray faceSel |
Indicates the selected faces.
There is one bit for each face. Bits that are 1 indicate the face is selected.
| BitArray edgeSel |
Indicates the selected edges.
There is one bit for each edge of each face. Bits that are 1 indicate the edge is selected. The edge is identified by 3*faceIndex + edgeIndex.
| BitArray vertHide |
Hidden flags for vertices.
| DWORD dispFlags |
Display attribute flags.
They control various aspect of the Mesh objects display and may be one or more of the following values:
- DISP_VERTTICKS - Display vertices as small tick marks.
- DISP_SELVERTS - Display selected vertices.
- DISP_SELFACES - Display selected faces.
- DISP_SELEDGES - Display selected edges.
- DISP_SELPOLYS - Display selected polygons. Polygons are defined as adjacent triangles with hidden edges. A selected face would show all edges regardless of if they were hidden edges. A polygon would only show the edges of the polygon that were not hidden.
| DWORD selLevel |
| int normalsBuilt |
Nonzero if normals have been built for the current mesh; 0 otherwise.
| MeshRenderData* renderData |
Points to the render data used by the renderer.
| StripTab* stab |
depends on topo
| DWTab norInd |
indirection array for fast normal lookup
| int normalCount |
total number of normals
| Point3* gfxNormals |
flattened list of normals pointers back in the rverts data.
We need to get rid of this or something this is big memory eater
| int numTexCoords[GFX_MAX_TEXTURES] |
Derived arrays to contain generated texture coordinates.
| Point3* texCoords[GFX_MAX_TEXTURES] |
Derived arrays to contain generated texture coordinates.
| long* vFlags |
Holds flags specific to the corresponding vertex in the verts array.