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virtual MFn::Type | type () const |
| Function set type. More...
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virtual | ~MFnTransform () |
| Destructor. More...
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| MFnTransform () |
| Default constructor.
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| MFnTransform (MObject &object, MStatus *ReturnStatus=NULL) |
| Constructor. More...
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| MFnTransform (const MDagPath &object, MStatus *ret=NULL) |
| Constructor. More...
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MObject | create (MObject parent=MObject::kNullObj, MStatus *ReturnStatus=nullptr) |
| Creates a new transformation node. More...
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MTransformationMatrix | transformation (MStatus *ReturnStatus=nullptr) const |
| Retrieve the transformation matrix represented by this transform. More...
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MStatus | set (const MTransformationMatrix &transform) |
| Change this transform to equal the given matrix. More...
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MVector | getTranslation (MSpace::Space space, MStatus *ReturnStatus=nullptr) const |
| Retrieve the translation component of this transformation in centimeters. More...
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MStatus | setTranslation (const MVector &vec, MSpace::Space space) |
| Change the translation component of this transformation. More...
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MStatus | translateBy (const MVector &vec, MSpace::Space space) |
| Relatively change the translation component of this transformation. More...
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MStatus | getScale (double scale[3]) const |
| Retrieve the scaling component of this transformation. More...
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MStatus | setScale (const double scale[3]) |
| Set the scaling component of this transformation. More...
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MStatus | scaleBy (const double scale[3]) |
| Relatively scale this transformation. More...
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MPoint | scalePivot (MSpace::Space space, MStatus *ReturnStatus=nullptr) const |
| Returns the pivot around which the scale is applied. More...
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MStatus | setScalePivot (const MPoint &point, MSpace::Space space, bool balance) |
| Set the pivot around which the scale is applied in centimeters. More...
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MVector | scalePivotTranslation (MSpace::Space space, MStatus *ReturnStatus=nullptr) const |
| Returns the scale pivot translation in centimeters. More...
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MStatus | setScalePivotTranslation (const MVector &vec, MSpace::Space space) |
| Set the scale pivot translation in centimeters. More...
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MStatus | getShear (double scale[3]) const |
| Retrieve the shearing component of this transformation. More...
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MStatus | setShear (const double shear[3]) |
| Set the shearing component of this transformation. More...
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MStatus | shearBy (const double shear[3]) |
| Relatively shear this transformation. More...
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MStatus | getRotation (MQuaternion &quaternion, MSpace::Space=MSpace::kTransform) const |
| Retrieve the rotation component of this transformation as a quaternion. More...
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MStatus | setRotation (const MQuaternion &quaternion, MSpace::Space=MSpace::kTransform) |
| Change the rotation component of this transformation using a quaternion. More...
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MStatus | rotateBy (const MQuaternion &quaternion, MSpace::Space=MSpace::kTransform) |
| Relatively change the rotation of this transformation using a quaternion. More...
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MStatus | getRotation (MEulerRotation &rotation) const |
| Retrieve the rotation component of this transformation. More...
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MStatus | setRotation (const MEulerRotation &rotation) |
| Change the rotation component of this transformation. More...
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MStatus | rotateBy (const MEulerRotation &rotation, MSpace::Space=MSpace::kTransform) |
| Relatively change the rotation component of this transformation. More...
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MPoint | rotatePivot (MSpace::Space space, MStatus *ReturnStatus=nullptr) const |
| Returns the pivot about which the rotation is applied. More...
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MStatus | setRotatePivot (const MPoint &point, MSpace::Space space, bool balance) |
| Set the rotate pivot in centimeters about which rotation is applied. More...
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MVector | rotatePivotTranslation (MSpace::Space space, MStatus *ReturnStatus=nullptr) const |
| Return the rotate pivot translation in centimeters. More...
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MStatus | setRotatePivotTranslation (const MVector &vec, MSpace::Space space) |
| Set the rotate pivot translation in centimeters. More...
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MStatus | getRotationQuaternion (double &x, double &y, double &z, double &w, MSpace::Space=MSpace::kTransform) const |
| Retrieve the rotation component of this transformation as a quaternion. More...
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MStatus | setRotationQuaternion (double x, double y, double z, double w, MSpace::Space=MSpace::kTransform) |
| Change the rotation component of this transformation using a quaternion. More...
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MStatus | rotateByQuaternion (double x, double y, double z, double w, MSpace::Space=MSpace::kTransform) |
| Relatively change the rotation of this transformation using a quaternion. More...
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MStatus | getRotation (double rotation[3], MTransformationMatrix::RotationOrder &order) const |
| Retrieve the rotation component of this transformation. More...
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MStatus | setRotation (const double rotation[3], MTransformationMatrix::RotationOrder order) |
| Change the rotation component of this transformation. More...
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MStatus | rotateBy (const double rotation[3], MTransformationMatrix::RotationOrder order, MSpace::Space=MSpace::kTransform) |
| Relatively change the rotation component of this transformation. More...
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MQuaternion | rotateOrientation (MSpace::Space space, MStatus *ReturnStatus=nullptr) const |
| Returns the rotation used to orient the local rotation space. More...
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MStatus | setRotateOrientation (const MQuaternion &quat, MSpace::Space space, bool balance) |
| Set the rotation used to orient the local rotation space. More...
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MTransformationMatrix::RotationOrder | rotationOrder (MStatus *ReturnStatus=nullptr) const |
| Returns the rotation order for the transform matrix - the order in which the Euler angles are applied to create the end rotation. More...
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MStatus | setRotationOrder (MTransformationMatrix::RotationOrder order, bool reorder) |
| Change the rotation order for the transform - the order in which the Euler angles are applied to create the end rotation. More...
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MTransformationMatrix | restPosition (MStatus *ReturnStatus) const |
| Retrieve the saved rest position of this transform. More...
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MStatus | setRestPosition (const MTransformationMatrix &matrix) |
| Change the saved rest position of this transform. More...
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MStatus | resetFromRestPosition () |
| Reset the transform to its rest position. More...
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MStatus | clearRestPosition () |
| Clear the saved rest position of this transform. More...
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bool | isLimited (MFnTransform::LimitType type, MStatus *ReturnStatus=nullptr) const |
| Determine if the specified limit attribute is enabled or disabled. More...
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double | limitValue (MFnTransform::LimitType type, MStatus *ReturnStatus=nullptr) const |
| Determine the current value of the specified limit. More...
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MStatus | setLimit (MFnTransform::LimitType type, double value) |
| Change the limit value for the specified limit type, and automatically enable the limit to be true. More...
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MStatus | enableLimit (MFnTransform::LimitType type, bool flag) |
| Enable or disable the limit value for the specified limit type. More...
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| MFnTransform (const MObject &object, MStatus *ret=NULL) |
| Constructor. More...
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MStatus | getRotation (double[3], MTransformationMatrix::RotationOrder &order, MSpace::Space space) const |
| This method is obsolete. More...
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MStatus | setRotation (const double[3], MTransformationMatrix::RotationOrder, MSpace::Space space) |
| This method is obsolete. More...
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MVector | translation (MSpace::Space, MStatus *=nullptr) const |
| This method is obsolete. More...
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virtual | ~MFnDagNode () |
| Destructor. More...
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| MFnDagNode () |
| Class Constructor. More...
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| MFnDagNode (MObject &object, MStatus *ret=NULL) |
| This method is not available in Python. More...
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| MFnDagNode (const MDagPath &object, MStatus *ret=NULL) |
| Class Constructor. More...
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MObject | create (const MTypeId &typeId, MObject &parent=MObject::kNullObj, MStatus *ReturnStatus=NULL) |
| Creates a new DAG node with the given type tag. More...
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MObject | create (const MTypeId &typeId, const MString &name, MObject &parent=MObject::kNullObj, MStatus *ReturnStatus=NULL) |
| Creates a new DAG node with the given type tag. More...
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MObject | create (const MString &type, MObject &parent=MObject::kNullObj, MStatus *ReturnStatus=NULL) |
| Creates a new DAG node with the given type tag. More...
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MObject | create (const MString &type, const MString &name, MObject &parent=MObject::kNullObj, MStatus *ReturnStatus=NULL) |
| Creates a new DAG node with the given type tag. More...
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unsigned int | parentCount (MStatus *ReturnStatus=NULL) const |
| Determines the number of parent Nodes of the Node. More...
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MObject | parent (unsigned int i, MStatus *ReturnStatus=NULL) const |
| Queries the DAG Node attached to the Function Set for the parent Node corresponding to the given index. More...
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MStatus | addChild (MObject &child, unsigned int index=kNextPos, bool keepExistingParents=false) |
| Makes the given DAG Node a child of the DAG Node to which this instance of the Function Set is attached. More...
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MStatus | removeChild (MObject &child) |
| Removes the given DAG Node from the parent. More...
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MStatus | removeChildAt (unsigned int index) |
| Removes the child at the given index from the parent. More...
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unsigned int | childCount (MStatus *ReturnStatus=NULL) const |
| Determines the number of child Nodes of the Node. More...
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MObject | child (unsigned int i, MStatus *ReturnStatus=NULL) const |
| Queries the DAG Node attached to the Function Set for the child Node corresponding to the given index. More...
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MObject | dagRoot (MStatus *ReturnStatus=NULL) |
| Determines the root of the first DAG Path to the DAG Node attached to the Function Set. More...
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bool | hasParent (const MObject &node, MStatus *ReturnStatus=NULL) const |
| Determines whether or not the given Node is a parent of the DAG Node attached to the Function Set. More...
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bool | hasChild (const MObject &node, MStatus *ReturnStatus=NULL) const |
| Determines whether or not the given Node is a child of the DAG Node attached to the Function Set. More...
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bool | isChildOf (const MObject &node, MStatus *ReturnStatus=NULL) const |
| Determines whether or not the DAG Node attached to the Function Set is a child of the given node. More...
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bool | isParentOf (const MObject &node, MStatus *ReturnStatus=NULL) const |
| Determines whether or not the DAG Node attached to the Function Set is a parent of the given node. More...
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bool | inUnderWorld (MStatus *ReturnStatus=NULL) const |
| Determines whether or not the DAG Node is an underworld node. More...
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bool | inModel (MStatus *ReturnStatus=NULL) const |
| Determines whether or not the DAG Node is in the model. More...
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bool | isInstanceable (MStatus *ReturnStatus=NULL) const |
| Returns true if the DAG node can be instanced, and false otherwise. More...
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MStatus | setInstanceable (const bool how) |
| Sets whether or not the DAG node is instanceable. More...
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bool | isInstanced (bool indirect=true, MStatus *ReturnStatus=NULL) const |
| Determines whether the DAG Node attached to the Function Set is directly or indirectly instanced. More...
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bool | isInstancedAttribute (const MObject &attr, MStatus *ReturnStatus=NULL) const |
| Returns true if the specified attribute is instanced. More...
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unsigned int | instanceCount (bool total, MStatus *ReturnStatus=NULL) const |
| Determines the number of times the Node attached to the Function Set is instanced. More...
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MObject | duplicate (bool instance=false, bool instanceLeaf=false, MStatus *ReturnStatus=NULL) const |
| This method duplicates the DAG hierarchy rooted at the current node. More...
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MStatus | getPath (MDagPath &path) const |
| Returns a DAG Path to the DAG Node attached to the Function Set. More...
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MStatus | getAllPaths (MDagPathArray &paths) const |
| Determines all DAG Paths to the DAG Node attached to the Function Set. More...
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MString | fullPathName (MStatus *ReturnStatus=NULL) const |
| Return a string representing the full path from the root of the dag to this object. More...
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MString | partialPathName (MStatus *ReturnStatus=NULL) const |
| Return a string representing the partial path from the root of the dag to this object. More...
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MMatrix | transformationMatrix (MStatus *ReturnStatus=NULL) const |
| Returns the object space transformation matrix for this DAG node. More...
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bool | isIntermediateObject (MStatus *ReturnStatus=NULL) const |
| Returns true if this object is an intermediate in a geometry calculation. More...
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MStatus | setIntermediateObject (bool isIntermediate) |
| Sets whether this object is an intermediate in a geometry calculation. More...
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int | objectColor (MStatus *ReturnStatus=NULL) const |
| This method is obsolete. More...
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MStatus | setObjectColor (int color) |
| Sets the index for the current user defined inactive color used by the node. More...
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bool | usingObjectColor (MStatus *ReturnStatus=NULL) const |
| This method is obsolete. More...
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MStatus | setUseObjectColor (bool useObjectColor) |
| This method is obsolete. More...
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MObjectColorType | objectColorType (MStatus *ReturnStatus=NULL) const |
| Determines whether or not the user defined inactive color will be used for the node, or whether the default inactive color will be used. More...
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MStatus | setObjectColorType (MObjectColorType type) |
| Sets whether or not the user defined inactive object color will be used. More...
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MStatus | setObjectColor (const MColor &color) |
| Sets the color value for the current user defined inactive color used by the node. More...
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MColor | objectColorRGB (MStatus *ReturnStatus=NULL) const |
| Determines the RGB color for the current user defined inactive color used by the node. More...
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int | objectColorIndex (MStatus *ReturnStatus=NULL) const |
| Determines the index for the current user defined inactive color used by the node. More...
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MColor | hiliteColor (MStatus *ReturnStatus=NULL) const |
| Determines the current hilite color used by the node. More...
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bool | usingHiliteColor (MStatus *ReturnStatus=NULL) const |
| Determines whether or not the hilite color will be used for the node. More...
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MColor | dormantColor (MStatus *ReturnStatus=NULL) const |
| Determines the dormant color used by this node. More...
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MColor | activeColor (MStatus *ReturnStatus=NULL) const |
| Determines the active color used by this node. More...
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bool | drawOverrideEnabled (MStatus *ReturnStatus=NULL) const |
| Determines whether or not draw override is turned on for this node. More...
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bool | drawOverrideIsReference (MStatus *ReturnStatus=NULL) const |
| Determines whether or not Display Type of the draw override is Reference for this node. More...
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bool | drawOverrideIsTemplate (MStatus *ReturnStatus=NULL) const |
| Determines whether or not Display Type of the draw override is Template for this node. More...
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bool | drawOverrideColor (MColor &color, MStatus *ReturnStatus=NULL) const |
| Determines the draw override color used by this node. More...
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MStatus | getConnectedSetsAndMembers (unsigned int instanceNumber, MObjectArray &sets, MObjectArray &comps, bool renderableSetsOnly) const |
| Returns all the sets connected to the specified instance of this DAG object. More...
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MBoundingBox | boundingBox (MStatus *ReturnStatus=NULL) const |
| Returns the bounding box for the dag node in object space. More...
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MDagPath | dagPath (MStatus *ReturnStatus=NULL) const |
| Returns the DagPath to which the Function Set is attached. More...
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virtual MStatus | setObject (const MDagPath &path) |
| Attaches Function Set to the DAG Node that has the given DAG Path. More...
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MStatus | setObject (MObject &object) override |
| Attaches Function Set to given DAG Node. More...
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MObject | model (MStatus *ReturnStatus=NULL) const |
| This method is obsolete. More...
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| MFnDagNode (const MObject &object, MStatus *ret=NULL) |
| No script support. More...
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MStatus | setObject (const MObject &object) override |
| No script support. More...
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virtual | ~MFnDependencyNode () |
| Destructor.
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| MFnDependencyNode () |
| Default constructor.
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| MFnDependencyNode (MObject &object, MStatus *ReturnStatus=NULL) |
| Constructor. More...
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MObject | create (const MTypeId &typeId, MStatus *ReturnStatus=NULL) |
| Creates a new dependency node with the given type tag. More...
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MObject | create (const MTypeId &typeId, const MString &name, MStatus *ReturnStatus=NULL) |
| Creates a new dependency node with the given type tag. More...
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MObject | create (const MString &type, MStatus *ReturnStatus=NULL) |
| Creates a new dependency node with the given type. More...
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MObject | create (const MString &type, const MString &name, MStatus *ReturnStatus=NULL) |
| Creates a new dependency node with the given type. More...
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MTypeId | typeId (MStatus *ReturnStatus=NULL) const |
| Returns the type id of this node. More...
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MString | typeName (MStatus *ReturnStatus=NULL) const |
| Returns the type name of this node. More...
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MString | name (MStatus *ReturnStatus=NULL) const |
| Returns the name of this node. More...
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MString | absoluteName (MStatus *ReturnStatus=NULL) const |
| Returns the absolute name of this node. More...
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MString | uniqueName (MStatus *ReturnStatus=NULL) const |
| Returns the unique name of this node. More...
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MString | pluginName (MStatus *ReturnStatus=NULL) const |
| Returns the name of the plug-in this MFnDependendencyNode was defined in. More...
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MString | setName (const MString &name, bool createNamespace=false, MStatus *ReturnStatus=NULL) |
| Sets the name of this node. More...
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MUuid | uuid (MStatus *ReturnStatus=NULL) const |
| Returns the node's UUID. More...
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void | setUuid (const MUuid &uuid, MStatus *ReturnStatus=NULL) |
| Sets the node's UUID. More...
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MStatus | getConnections (MPlugArray &array) const |
| Get all of the current connections to this node as an array of plugs. More...
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unsigned int | attributeCount (MStatus *ReturnStatus=NULL) const |
| Returns the number of attributes that this node has. More...
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MObject | attribute (unsigned int index, MStatus *ReturnStatus=NULL) const |
| Finds the attribute of this node at the given index. More...
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MObject | reorderedAttribute (unsigned int index, MStatus *ReturnStatus=NULL) const |
| Some nodes, such as the various animCurve nodes, require that their attributes be set in a specific order for proper operation. More...
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MObject | attribute (const MString &attrName, MStatus *ReturnStatus=NULL) const |
| Finds the attribute of this node that has the given name. More...
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MAttrClass | attributeClass (const MObject &attr, MStatus *ReturnStatus=NULL) const |
| Returns the class (normal, dynamic, extension) of the specified attribute. More...
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MStatus | getAffectedAttributes (const MObject &attr, MObjectArray &affectedAttributes) const |
| Returns an array of attributes that are affected by the attribute passed in. More...
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MStatus | getAffectedByAttributes (const MObject &attr, MObjectArray &affectedByAttributes) const |
| Returns an array of attributes that affect the attribute passed in, attr. More...
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MPlug | findPlug (const MObject &attr, bool wantNetworkedPlug, MStatus *ReturnStatus=NULL) const |
| Attempt to find a plug for the given attribute. More...
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MPlug | findPlug (const MString &attrName, bool wantNetworkedPlug, MStatus *ReturnStatus=NULL) const |
| Attempt to find a plug for the given attribute. More...
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MPlug | findPlug (const MObject &attr, MStatus *ReturnStatus=NULL) const |
| This method is obsolete. More...
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MPlug | findPlug (const MString &attrName, MStatus *ReturnStatus=NULL) const |
| This method is obsolete. More...
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MStatus | addAttribute (const MObject &attr) |
| Add a new dynamic attibute to this node. More...
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MStatus | removeAttribute (const MObject &attr) |
| Remove a dynamic attribute from a node. More...
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MPxNode * | userNode (MStatus *ReturnStatus=NULL) const |
| If the function set's node is a plug-in node, then this method will extract the MPxNode pointer from it. More...
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bool | isFromReferencedFile (MStatus *ReturnStatus=NULL) const |
| Indicates whether or not this node came from a referenced file. More...
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bool | isShared (MStatus *ReturnStatus=NULL) const |
| Indicates whether or not this node is shared. More...
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bool | isTrackingEdits (MStatus *ReturnStatus=NULL) const |
| Returns whether or not edits on the given node are being tracked by the generalized edit system. More...
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bool | hasUniqueName (MStatus *ReturnStatus=NULL) const |
| Indicates whether or not this node's name is unique within the scene. More...
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MString | parentNamespace (MStatus *ReturnStatus=NULL) const |
| Returns the name of the namespace in which this node resides. More...
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bool | isLocked (MStatus *ReturnStatus=NULL) const |
| Indicates whether or not this node is locked. More...
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MStatus | setLocked (bool locked) |
| Locks or unlocks this node. More...
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bool | isNewAttribute (const MObject &attr, MStatus *ReturnStatus=NULL) const |
| Indicates whether or not the specified attribute was added to this node within the current scene. More...
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MStatus | setFlag (unsigned int flag, bool state) |
| Sets the state of the specified flag for the node. More...
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bool | isFlagSet (unsigned int flag, MStatus *ReturnStatus=NULL) const |
| Retrieves the current state of the specified flag for a node. More...
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bool | isDefaultNode (MStatus *ReturnStatus=NULL) const |
| Returns true if the node is a default node. More...
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MStatus | setDoNotWrite (bool flag) |
| Use this method to mark the "do not write" state of this node. More...
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bool | canBeWritten (MStatus *ReturnStatus=NULL) const |
| Returns the do not write state of the node. More...
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bool | hasAttribute (const MString &name, MStatus *ReturnStatus=NULL) const |
| Returns true if the node already has an attribute with the given name. More...
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MObject | getAliasAttr (bool force, MStatus *ReturnStatus=NULL) |
| Returns the node's alias attribute, which is a special attribute used to store information about the node's attribute aliases. More...
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bool | setAlias (const MString &alias, const MString &name, const MPlug &plug, bool add=true, MStatus *ReturnStatus=NULL) |
| Sets or removes an alias (i.e. More...
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bool | findAlias (const MString &alias, MObject &attrObj, MStatus *ReturnStatus=NULL) const |
| Retrieves the attribute with the given alias. More...
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bool | getAliasList (MStringArray &strArray, MStatus *ReturnStatus=NULL) |
| Returns a list of all attribute aliases for this node. More...
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MString | plugsAlias (const MPlug &plug, MStatus *ReturnStatus=NULL) |
| Returns the alias for the plug's attribute or the empty string if that attribute has no alias. More...
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MStatus | setIcon (const MString &filename) |
| Associates a custom icon with the node for display in the Maya UI. More...
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MString | icon (MStatus *ReturnStatus=NULL) const |
| Returns the custom icon filename associated with the node. More...
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MStatus | getExternalContent (MExternalContentInfoTable &table) const |
| Returns the external content (files) that this node depends on. More...
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MStatus | addExternalContentForFileAttr (MExternalContentInfoTable &table, const MObject &attr) const |
| Adds content info to the specified table from a file path attribute. More...
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MStatus | setExternalContentForFileAttr (const MObject &attr, const MExternalContentLocationTable &table) |
| Sets content info in the specified attribute from the table. More...
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MStatus | setExternalContent (const MExternalContentLocationTable &table) |
| Changes the location of external content. More...
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bool | affectsAnimation (MStatus *ReturnStatus=NULL) const |
| Indicates whether or not this node is allowed to animate. More...
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MStatus | setAffectsAnimation () |
| Define a node can affect animation. More...
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MString | setName (const MString &name, MStatus *ReturnStatus) |
| This method is obsolete. More...
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| MFnDependencyNode (const MObject &object, MStatus *ReturnStatus=NULL) |
| This method is not available in Python. More...
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bool | getPlugsAlias (const MPlug &plug, MString &aliasName, MStatus *ReturnStatus=NULL) |
| This method is not available in Python. More...
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virtual const adsk::Data::Associations * | metadata (MStatus *ReturnStatus=NULL) const |
| This method is not available in Python. More...
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virtual MStatus | setMetadata (const adsk::Data::Associations &) |
| This method is not available in Python. More...
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virtual MStatus | deleteMetadata () |
| This method is not available in Python. More...
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virtual MStatus | validateMetadata (MString &errors) const |
| This method is not available in Python. More...
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MStatus | dgTimerOn () |
| Indicates that this node should collect DG timing data whenever DG timing is enabled. More...
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MStatus | dgTimerOff () |
| Indicates that this node should no longer collect DG timing data when DG timing is enabled. More...
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MdgTimerState | dgTimerQueryState (MStatus *ReturnStatus=NULL) |
| The function returns the current on/off state of the node's timer. More...
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MStatus | dgTimerReset () |
| The function resets the dependency graph timers and counters for this node to zero. More...
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double | dgTimer (const MdgTimerMetric timerMetric, const MdgTimerType timerType, MStatus *ReturnStatus=NULL) const |
| The function returns the specified timer value for the current node. More...
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MStatus | dgCallbacks (const MdgTimerType type, MStringArray &callbackName, MDoubleArray &value) |
| Node callbacks that occur when timing is enabled get logged with the node and can be queried via this method. More...
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MStatus | dgCallbackIds (const MdgTimerType type, const MString &callbackName, MCallbackIdArray &callbackId, MDoubleArray &value) |
| This method provides a further breakdown of the per-callback time returned via dgCallbacks() by returning the data on a per-callbackId basis. More...
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MStatus | addAttribute (const MObject &attr, MAttrClass type) |
| This method is obsolete. More...
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MStatus | removeAttribute (const MObject &attr, MAttrClass type) |
| This method is obsolete. More...
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virtual | ~MFnBase () |
| Class Destructor. More...
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bool | hasObj (MFn::Type) const |
| Determines whether or not the Function Set is compatible with the specified Maya Object within the API RTTI system. More...
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bool | hasObj (const MObject &) const |
| Determines whether or not the Function Set is compatible with the specified Maya Object within the API RTTI system. More...
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MObject | object (MStatus *ReturnStatus=nullptr) const |
| Returns the MObject that is attached to the Function Set. More...
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Create and access transform nodes.
The MFnTransform function set provides access to transformation DAG nodes called transforms.
DAG nodes are separated into two types, transforms and geometry nodes. All DAG nodes that are not transform nodes must exist as a child of a transform node. Only transforms provide transformation information. Transforms are also commonly used as parent nodes for the purpose of hierarchical grouping.
The transformation in the node is represented as a 4x4 transformation matrix. This function set allows access to the whole matrix, or the individual components (eg scale, rotation, shear, etc) of the transformation. The transform node is made up of many components that make up the final transformation matrix. This breakdown provides animators fine control over the animation of these parameters. Therefore, it is necessary to describe the order in which these attributes are applied to build the final matrix attribute.
A transformation matrix is composed of the following components. All components with units will be in Maya's internal units (radians for rotations and centimeters for translations):
- Scale pivot point point around which scales are performed [Sp]
- Scale scaling about x, y, z axes [S]
- Shear shearing in xy, xz, yx [Sh]
- Scale pivot translation translation introduced to preserve existing scale transformations when moving pivot. This is used to prevent the object from moving when the object's pivot point is not at the origin and a non-unit scale is applied to the object [St].
- Rotate pivot point point about which rotations are performed [Rp]
- Rotation orientation rotation to orient local rotation space [Ro]
- Rotation rotation [R]
- Rotate pivot translation translation introduced to preserve existing rotate transformations when moving pivot. This is used to prevent the object from moving when the object's pivot point is not at the origin and the pivot is moved. [Rt]
- Translate translation in x, y, z axes [T]
The matrices are post-multiplied in Maya. For example, to transform a point P from object-space to world-space (P') you would need to post-multiply by the worldMatrix. (P' = P x WM)
The transformation matrix is then constructed as follows:
-1 -1
[Sp]x[S]x[Sh]x[Sp]x[St]x[Rp]x[Ro]x[R]x[Rp]x[Rt]x[T]
where 'x' denotes matrix multiplication and '-1' denotes matrix inversion
Sp = | 1 0 0 0 | St = | 1 0 0 0 |
| 0 1 0 0 | | 0 1 0 0 |
| 0 0 1 0 | | 0 0 1 0 |
| spx spy spz 1 | | sptx spty sptz 1 |
S = | sx 0 0 0 | Sh = | 1 0 0 0 |
| 0 sy 0 0 | | shxy 1 0 0 |
| 0 0 sz 0 | | shxz shyz 1 0 |
| 0 0 0 1 | | 0 0 0 1 |
Rp = | 1 0 0 0 | Rt = | 1 0 0 0 |
| 0 1 0 0 | | 0 1 0 0 |
| 0 0 1 0 | | 0 0 1 0 |
| rpx rpy rpz 1 | | rptx rpty rptz 1 |
Ro = AX * AY * AZ
AX = | 1 0 0 0 | AY = | cy 0 -sy 0 |
| 0 cx sx 0 | | 0 1 0 0 |
| 0 -sx cx 0 | | sy 0 cy 0 |
| 0 0 0 1 | | 0 0 0 1 |
AZ = | cz sz 0 0 | sx = sin(rax), cx = cos(rax)
| -sz cz 0 0 | sy = sin(ray), cx = cos(ray)
| 0 0 1 0 | sz = sin(raz), cz = cos(raz)
| 0 0 0 1 |
R = RX * RY * RZ (Note: order is determined by rotateOrder)
RX = | 1 0 0 0 | RY = | cy 0 -sy 0 |
| 0 cx sx 0 | | 0 1 0 0 |
| 0 -sx cx 0 | | sy 0 cy 0 |
| 0 0 0 1 | | 0 0 0 1 |
RZ = | cz sz 0 0 | sx = sin(rx), cx = cos(rx)
| -sz cz 0 0 | sy = sin(ry), cx = cos(ry)
| 0 0 1 0 | sz = sin(rz), cz = cos(rz)
| 0 0 0 1 |
T = | 1 0 0 0 |
| 0 1 0 0 |
| 0 0 1 0 |
| tx ty tz 1 |
Note that internally the Maya transform does not store the individual component values in matrices. It stores them in the data structure which makes the most sense for that component. For example, translation is stored as a vector. The accessor methods on MFnTransform provide the data in their native structure rather than as a matrix.
Additionally, each transform can save a temporary "rest position" matrix using the setRestPosition method. The rest position is not used internally by Maya. It is exclusively for use from the API as a temporary cache, which can be set and restored within a single Maya session. Note that the rest position is not saved with the scene.
- Examples:
- AbcBullet/AbcWriteJob.cpp, AbcBullet/MayaTransformWriter.cpp, AbcBullet/MayaTransformWriter.h, AbcExport/AbcWriteJob.cpp, AbcExport/MayaTransformWriter.cpp, AbcExport/MayaTransformWriter.h, AbcImport/CreateSceneHelper.cpp, AbcImport/NodeIteratorVisitorHelper.cpp, AbcImport/NurbsCurveHelper.cpp, AbcImport/XformHelper.cpp, closestPointOnNurbsSurfaceCmd/closestPointOnNurbsSurfaceCmd.cpp, customAttrManip/customAttrManip.cpp, footPrintManip/footPrintManip.cpp, geometrySurfaceConstraint/geometrySurfaceConstraint.cpp, gpuCache/CacheWriter.h, intersectOnNurbsSurfaceCmd/intersectOnNurbsSurfaceCmd.cpp, lepTranslator/lepTranslator.cpp, lineManip/lineManip.cpp, lineManipContainer/lineManipContainer.cpp, manipOverride/customTriadManip.cpp, manipOverride/manipOverride.cpp, moveNumericTool/moveNumericTool.cpp, moveTool/moveTool.cpp, pointManip/pointManip.cpp, richMoveCmd/richMoveCmd.cpp, simpleSolverNode/simpleSolverNode.cpp, squareScaleManip/squareScaleManip.cpp, squareScaleManipContext/squareScaleManipContext.cpp, surfaceBumpManip/surfaceBumpManip.cpp, and swissArmyManip/swissArmyManip.cpp.