#include <MFnSkinCluster.h>
MFnSkinCluster is the function set for skinClusters. SkinCluster nodes are created during a smooth bindSkin. The purpose of the skinCluster is to store a weight per influence object for each component of each geometry that is deformed. Influence objects can be joints or any transform.
Note that unlike most deformers, a skinCluster node can deform only a single geometry. Therefore, if additional geometries are added to the skinCluster set, they will be ignored.
This function set provides methods for getting and setting weights on skin cluster nodes. It parent class, MFnGeometryFilter provides methods for accessing the skin cluster's input and output geometry.
Public Member Functions | |
virtual MFn::Type | type () const |
Function set type. | |
virtual | ~MFnSkinCluster () |
Destructor. | |
MFnSkinCluster () | |
Default constructor. | |
MFnSkinCluster (MObject &object, MStatus *ReturnStatus=NULL) | |
Constructor. | |
MStatus | getWeights (const MDagPath &path, const MObject &components, unsigned int influenceIndex, MDoubleArray &weights) const |
MStatus | getWeights (const MDagPath &path, const MObject &components, MDoubleArray &weights, unsigned int &influenceCount) const |
MStatus | setWeights (const MDagPath &path, const MObject &components, unsigned int jointIndex, double value, bool normalize=true, MDoubleArray *oldValues=NULL) |
MStatus | setWeights (const MDagPath &path, const MObject &components, MIntArray &influenceIndices, MDoubleArray &values, bool normalize=true, MDoubleArray *oldValues=NULL) |
MStatus | getPointsAffectedByInfluence (const MDagPath &path, MSelectionList &result, MDoubleArray &weights) |
unsigned int | indexForInfluenceObject (const MDagPath &path, MStatus *ReturnStatus=NULL) const |
unsigned int | influenceObjects (MDagPathArray &paths, MStatus *ReturnStatus=NULL) const |
MStatus | getWeights (const MDagPath &path, const MObject &components, unsigned int influenceIndex, MFloatArray &weights) const |
MStatus | getWeights (const MDagPath &path, const MObject &components, MFloatArray &weights, unsigned int &influenceCount) const |
MStatus | setWeights (const MDagPath &path, const MObject &components, unsigned int jointIndex, float value, bool normalize=true, MFloatArray *oldValues=NULL) |
MStatus | setWeights (const MDagPath &path, const MObject &components, MIntArray &influenceIndices, MFloatArray &values, bool normalize=true, MFloatArray *oldValues=NULL) |
MStatus | getPointsAffectedByInfluence (const MDagPath &path, MSelectionList &result, MFloatArray &weights) |
MFnSkinCluster (const MObject &object, MStatus *ReturnStatus=NULL) | |
Constructor. | |
Protected Member Functions | |
virtual const char * | className () const |
Class name. |
Constructor.
Class constructor that initializes the function set to the given MObject.
[in] | object | The MObject to attach the function set to |
[out] | ReturnStatus | the return status |
Constructor.
Class constructor that initializes the function set to the given MObject.
[in] | object | The MObject to attach the function set to |
[out] | ReturnStatus | the return status |
MFn::Type MFnSkinCluster::type | ( | ) | const [virtual] |
Function set type.
Return the class type : MFn::kSkinClusterFilter
Reimplemented from MFnGeometryFilter.
MStatus MFnSkinCluster::getWeights | ( | const MDagPath & | path, | |
const MObject & | components, | |||
unsigned int | influenceIndex, | |||
MDoubleArray & | weights | |||
) | const |
Gets the skinCluster weights for the influence object for the specified components of the object whose dagPath is specified. Note that if some of components are not deformed by the skinCluster, zeros will be returned as the weights. For example, on periodic nurbs surfaces, some of the cvs enforce the periodicity of the surface. There is no weight data for these components. They do not get deformed since their position is automatically maintained by the nurb so that the periodicity of the surface will not be lost. Zeros will be returned for such components.
The influence object is specified using the physical (non-sparse) index of the influence object. This corresponds to the order the influences are returned by the influenceObjects method.
The length of the returned array will be equal to the number of specified components. The values in the returned array will be ordered in the same order as the input components.
[in] | path | path to object deformed by the skinCluster |
[in] | components | components to return weights for |
[in] | influenceIndex | physical index of influence object |
[out] | weights | weight values |
MStatus MFnSkinCluster::getWeights | ( | const MDagPath & | path, | |
const MObject & | components, | |||
MDoubleArray & | weights, | |||
unsigned int & | influenceCount | |||
) | const |
Gets the skinCluster weights for all influenceObjects for the specified components of the object whose dagPath is specified. Returns the weights in an array of size number of components x number of influenceObjects. The array elements are ordered by components: i.e. all of the weight values for the first component first, followed by all the weight values for the next component, and so on. For the first component, the weights are ordered by influence object in the same order that is returned by the MFnSkinCluster::influenceObjects method.
The number of influence objects is returned in influenceCount.
[in] | path | path to object deformed by the skinCluster |
[in] | components | components to return weights for |
[out] | weights | weight values returned (one per component, per influence) |
[out] | influenceCount | count of influence objects |
MStatus MFnSkinCluster::setWeights | ( | const MDagPath & | path, | |
const MObject & | components, | |||
unsigned int | influenceIndex, | |||
double | value, | |||
bool | normalize = true , |
|||
MDoubleArray * | oldValues = NULL | |||
) |
Sets the skinCluster weight for the influence object on the specified components of the object whose dagPath is specified. The influence is specified using the physical (non-sparse) index of the influence object. This corresponds to the order the influences are returned by the influenceObjects method.
In order to undo the setWeight operation, it is necessary to save the oldValues array and call setWeight with the oldValues array at the time of undo. The number of oldValues returned will be of size number of specified components x the total number of influence objects. The values in the oldValues array will be ordered with first the all the values for the first component, then all the values for the next, and so on.
Note that unlike most deformers, a skinCluster node can deform only a single geometry. Therefore, if additional geometries are added to the skinCluster set, they will be ignored, and weights cannot be set for the additional geometry.
[in] | path | path to object deformed by the skinCluster |
[in] | components | components to be weighted |
[in] | influenceIndex | physical index of influence object for the weight |
[in] | value | weight value |
[in] | normalize | whether or not to normalize weights on other influence objects |
[in] | oldValues | previous weight values, for undo |
MStatus MFnSkinCluster::setWeights | ( | const MDagPath & | path, | |
const MObject & | components, | |||
MIntArray & | influenceIndices, | |||
MDoubleArray & | values, | |||
bool | normalize = true , |
|||
MDoubleArray * | oldValues = NULL | |||
) |
Sets the skinCluster weight on the specified components of the object whose dagPath is specified for the influence objects corresponding to the specified influence indices. The influence is specified using the physical (non-sparse) index of the influence object. This corresponds to the order the influences are returned by the influenceObjects method.
If you want to set the same values on all of the specified components, the number of values in the values array should equal the number of indices in the influence indices array. If you want to specify a unique value for each component, the number of values in the values array should equal the number of components x the number of indices in the influence indices array. The ordering of the values array should be such that first all the values for the first component are listed, then the second, and so on. For example, if you want to set the weights for three components for influences 7 and 10, the influence array would contain [7,10], and the values array would contain: [component#1 weight for influence 7, component #1 weight for influence 10, component#2 weight for influence 7, component#2 weight for influence 10, ...].
In order to undo the setWeights operation, it is necessary to save the oldValues array and call setWeights with the oldValues array at the time of undo. The number of oldValues returned will be of size number of components x total number of influence objects. The values in the oldValues array will be ordered with first the all the values for the first component, then all the values for the next, and so on.
Note that unlike most deformers, a skinCluster node can deform only a single geometry. Therefore, if additional geometries are added to the skinCluster set, they will be ignored, and weights cannot be set for the additional geometry.
[in] | path | path to object deformed by the skinCluster |
[in] | components | components to be weighted |
[in] | influenceIndices | physical indices of influence objects to set |
[in] | values | weight values |
[in] | normalize | whether or not to normalize weights on other influence objects |
[in] | oldValues | previous weight values, for undo |
MStatus MFnSkinCluster::getPointsAffectedByInfluence | ( | const MDagPath & | path, | |
MSelectionList & | result, | |||
MDoubleArray & | weights | |||
) |
During deformation, the skinCluster algorithm is applied for a given influence object on all points in the deformer's set whose weights are non-zero. This method allows the user to query the non-zero weights for a particular influence object.
Returns a selection list containing the dag path and the components that are affected by the specified influence object. To retrieve the components from the returned MSelectionList, use MSelectionList::getDagPath. Also returns the corresponding weights for the components. If no components are weighted for a specified influence, the resulting selection list will be empty.
[in] | path | path of the influence object |
[out] | result | selection list of components affected by the influence object for this skinCluster (return) |
[out] | weights | weights for the affected components (return) |
unsigned int MFnSkinCluster::indexForInfluenceObject | ( | const MDagPath & | mpath, | |
MStatus * | ReturnStatus = NULL | |||
) | const |
Returns the logical index of the matrix array attribute where the specified influence object is attached.
[in] | mpath | path of the influence object |
[out] | ReturnStatus | return status |
unsigned int MFnSkinCluster::influenceObjects | ( | MDagPathArray & | paths, | |
MStatus * | ReturnStatus = NULL | |||
) | const |
Returns an array of paths to the influence objects for the skinCluster.
[in] | paths | influence objects |
[out] | ReturnStatus | return status |
MStatus MFnSkinCluster::getWeights | ( | const MDagPath & | path, | |
const MObject & | components, | |||
unsigned int | influenceIndex, | |||
MFloatArray & | weights | |||
) | const |
This method is obsolete. Maya's skinCluster nodes store their weights as doubles. This method has been replaced by one which uses doubles instead of floats. This method only exists for backwards-compilability of old plug-in code.
[in] | path | path to object deformed by the skinCluster |
[in] | components | components to return weights for |
[in] | influenceIndex | index of influence object |
[out] | weights | weight values |
MStatus MFnSkinCluster::getWeights | ( | const MDagPath & | path, | |
const MObject & | components, | |||
MFloatArray & | weights, | |||
unsigned int & | influenceCount | |||
) | const |
This method is obsolete. Maya's skinCluster nodes store their weights as doubles. This method has been replaced by one which uses doubles instead of floats. This method only exists for backwards-compilability of old plug-in code.
[in] | path | path to object deformed by the skinCluster |
[in] | components | components to return weights for |
[out] | weights | weight values returned (one per component, per influence) |
[out] | influenceCount | count of influence objects |
MStatus MFnSkinCluster::setWeights | ( | const MDagPath & | path, | |
const MObject & | components, | |||
unsigned int | influenceIndex, | |||
float | value, | |||
bool | normalize = true , |
|||
MFloatArray * | oldValues = NULL | |||
) |
This method is obsolete. Maya's skinCluster nodes store their weights as doubles. This method has been replaced by one which uses doubles instead of floats. This method only exists for backwards-compilability of old plug-in code.
[in] | path | path to object deformed by the skinCluster |
[in] | components | components to be weighted |
[in] | influenceIndex | index of influence object for the weight |
[in] | value | weight value |
[in] | normalize | whether or not to normalize weights on other influence objects |
[in] | oldValues | previous weight values, for undo |
MStatus MFnSkinCluster::setWeights | ( | const MDagPath & | path, | |
const MObject & | components, | |||
MIntArray & | influenceIndices, | |||
MFloatArray & | values, | |||
bool | normalize = true , |
|||
MFloatArray * | oldValues = NULL | |||
) |
This method is obsolete. Maya's skinCluster nodes store their weights as doubles. This method has been replaced by one which uses doubles instead of floats. This method only exists for backwards-compilability of old plug-in code.
[in] | path | path to object deformed by the skinCluster |
[in] | components | components to be weighted |
[in] | influenceIndices | indices of influence objects to set |
[in] | values | weight values |
[in] | normalize | whether or not to normalize weights on other influence objects |
[in] | oldValues | previous weight values, for undo |
MStatus MFnSkinCluster::getPointsAffectedByInfluence | ( | const MDagPath & | path, | |
MSelectionList & | result, | |||
MFloatArray & | weights | |||
) |
This method is obsolete. Maya's skinCluster nodes store their weights as doubles. This method has been replaced by one which uses doubles instead of floats. This method only exists for backwards-compilability of old plug-in code.
[in] | path | path of the influence object |
[out] | result | selection list of components affected by the influence object for this skinCluster (return) |
[out] | weights | weights for the affected components (return) |
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