C++ API Reference
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drawing and selection for user defined shapes More...
#include <MPxSurfaceShapeUI.h>
Public Types | |
enum | UVSelectionType { kSelectMeshUVs, kSelectMeshVerts, kSelectMeshFaces, kSelectMeshEdges } |
Selection modes for UVs. More... | |
Public Member Functions | |
MPxSurfaceShapeUI () | |
Class constructor. | |
virtual | ~MPxSurfaceShapeUI () |
Class destructor. | |
void | getDrawData (const void *geom, MDrawData &) |
This method is obsolete. More... | |
virtual void | getDrawRequests (const MDrawInfo &, bool objectAndActiveOnly, MDrawRequestQueue &requests) |
This method is obsolete. More... | |
virtual void | draw (const MDrawRequest &, M3dView &view) const |
This method is obsolete. More... | |
virtual bool | select (MSelectInfo &selectInfo, MSelectionList &selectionList, MPointArray &worldSpaceSelectPts) const |
This routine must be overriden if the shape is to support interactive object and/or component selection. More... | |
virtual bool | snap (MSelectInfo &snapInfo) const |
Maya calls this method when snapping to the shape's vertices. More... | |
virtual bool | canDrawUV () const |
Called by Maya to determine if this surface shape supports UV drawing. More... | |
virtual void | drawUV (M3dView &view, const MTextureEditorDrawInfo &info) const |
This method is called when the surface shape is selected and the texture view is open. More... | |
virtual bool | selectUV (M3dView &view, UVSelectionType selType, int xmin, int ymin, int xmax, int ymax, bool singleSelect, MSelectionList &selList) const |
This method is called when the user performs a selection within the texture view. More... | |
MPxSurfaceShape * | surfaceShape () const |
Returns the non-ui shape associated with current instance of this class. More... | |
MMaterial | material (MDagPath &path) const |
Returns the material associated with this shape. More... | |
void | materials (MDagPath &path, MObjectArray &componentFilter, MMaterialArray &materials, MObjectArray *componentSet=NULL) const |
Returns a list of materials associated with this shape and a given list of components. More... | |
Static Public Member Functions | |
static MPxSurfaceShapeUI * | surfaceShapeUI (const MDagPath &path, MStatus *ReturnStatus=NULL) |
This is a static method that can be used to find the corresponding MPxSurfaceShapeUI for the specified path. More... | |
static const char * | className () |
Returns the name of this class. More... | |
drawing and selection for user defined shapes
The base class for the UI portion of all user defined shapes.
enum UVSelectionType |
void getDrawData | ( | const void * | geom, |
MDrawData & | data | ||
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This method is obsolete.
Sets up draw data for the shape.
[as of Maya 2019]
The draw data is meant to be a light weight class which can be used to pass geometry data through draw requests.
[in] | geom | the geometry necessary to draw the shape |
[out] | data | the draw data to be initialized |
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virtual |
This method is obsolete.
This routine must be overriden if the shape is to be drawn in the interactive display.
[as of Maya 2019]
This function places drawing requests on maya's drawing queue and is called whenever the view is refreshed and the shape needs to be redrawn.
[in] | info | Drawing state information. |
[in] | objectAndActiveOnly | Used to determine if draw requests for components need to be supplied. If false, some or all components are active and draw requests must be built for all components. |
[out] | queue | Queue on which to place the draw request. |
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virtual |
This method is obsolete.
This routine must be overriden if the shape is to be drawn in the interactive display.
[as of Maya 2019]
Maya will call this routine with requests that have been previously added to the drawing queue.
[in] | request | the drawing request |
[in] | view | the interactive 3d view in which to draw |
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virtual |
This routine must be overriden if the shape is to support interactive object and/or component selection.
The implementation of this method should call selectInfo.addSelection with information about the selected item and its selection mask. For single click selection, detected using the selectInfo.singleSection() method, the hit point should also be passed as an argument to selectInfo.addSelection.
[in] | selectInfo | the Selection state information. |
[out] | selectionList | List of items selected by this method. Do not update directly: use MSelectInfo::addSelection instead. |
[out] | worldSpaceSelectPts | List of points used to sort corresponding selections in single-select mode. (Closest to camera wins.) Do not update directly: use MSelectInfo::addSelection instead. |
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Maya calls this method when snapping to the shape's vertices.
If you wish your custom shape to support point snapping then you must override this method and have it call snapInfo's MSelectInfo::setSnapPoint() method to set the point to be snapped to. If setSnapPoint() is called multiple times then the point closest to the cursor will be used.
[in] | snapInfo | the Selection state information. |
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Called by Maya to determine if this surface shape supports UV drawing.
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virtual |
This method is called when the surface shape is selected and the texture view is open.
Users should override this method if their custom shape supports UVs.
[in] | view | Texture view in which to draw UVs. |
[in] | info | Drawing parameters. |
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virtual |
This method is called when the user performs a selection within the texture view.
The method is called only when the surface shape is member of the active selection list.
Maya provides the current viewport instance, the type of the selection, the extents of the selection rectangle (in viewport coordinates), and if the selection mode is single selection. The API user is expected to fill the selection list and return a result of true if 'something was selected'.
To properly use this method, you must make sure that you have a valid component type that Maya can recognize. Selection tests can be done using a pick buffer or by spatially determining the selected objects.
Important Currently Maya does not know how to manipulate custom UV components. This method only provides the facilities to visualize what has been selected in the viewport. The API user is responsible for implementing commands that can manipulate the currently selected UVs.
[in] | view | the texture drawing view |
[in] | selType | the selection type |
[in] | xmin | minimum x coordinate value of the selection rectangle. |
[in] | ymin | minimum y coordinate value of the selection rectangle. |
[in] | xmax | maximum x coordinate value of the selection rectangle. |
[in] | ymax | maximum y coordinate value of the selection rectangle. |
[in] | singleSelect | indicates if the user is in single selection mode. |
[out] | selList | the selection list to be populated. |
MPxSurfaceShape * surfaceShape | ( | ) | const |
Returns the non-ui shape associated with current instance of this class.
Returns the material associated with this shape.
The user must supply a DAG path as a shape can have several materials if instanced.
[in] | path | the path for which to get the material |
void materials | ( | MDagPath & | path, |
MObjectArray & | componentFilter, | ||
MMaterialArray & | materials, | ||
MObjectArray * | componentSet = NULL |
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) | const |
Returns a list of materials associated with this shape and a given list of components.
The user must supply a DAG path as a shape can have several materials if instanced.
[in] | path | the path for which to get materials |
[in] | componentFilter | the (optional) list of components to iterate over. If the list is empty, it will return materials for all components. |
[out] | materials | materials associated with this shape. |
[out] | componentSet | optional output for components associated with each returned material. A MObject::kNullObj entry indicates that the corresponding material is associated with the entire shape, not a specific component. |
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static |
This is a static method that can be used to find the corresponding MPxSurfaceShapeUI for the specified path.
If an MPxSurfaceShapeUI does not exist then one is created.
Important This function can only be used for custom surface shapes and the function will return NULL if the provided path is not a custom surface shape.
[in] | path | The full path to a surface shape, including the shape. |
[out] | ReturnStatus | The return status.
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static |
Returns the name of this class.