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maya api 2.0 parent matrix custom node, that maintain 0.0.0 rotations angles on joints.
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| import maya.api.OpenMaya as om2 | |
| def maya_useNewAPI(): | |
| pass | |
| class parentJointMatrix(om2.MPxNode): | |
| id_ = om2.MTypeId(0x00124dfe) | |
| def __init__(self) -> None: | |
| super(parentJointMatrix, self).__init__() | |
| @classmethod | |
| def creator(cls) -> None: | |
| return cls() | |
| @classmethod | |
| def initialize(cls) -> None: | |
| fnMatrix = om2.MFnMatrixAttribute() | |
| fnUnit = om2.MFnUnitAttribute() | |
| fnNumeric = om2.MFnNumericAttribute() | |
| fnEnum = om2.MFnEnumAttribute() | |
| # INPUTS | |
| cls.input_matrix = fnMatrix.create("inputMatrix", "im") | |
| fnMatrix.storable = True | |
| fnMatrix.keyable = True | |
| fnMatrix.connectable = True | |
| cls.addAttribute(cls.input_matrix) | |
| cls.offset_matrix = fnMatrix.create("offsetMatrix", "ofm") | |
| cls.addAttribute(cls.offset_matrix) | |
| cls.parent_matrix = fnMatrix.create("jointParentMatrix", "jpm") | |
| cls.addAttribute(cls.parent_matrix) | |
| cls.joint_orient_x = fnUnit.create("jointOrientX", "jox", om2.MFnUnitAttribute.kAngle, 0.) | |
| cls.joint_orient_y = fnUnit.create("jointOrientY", "joy", om2.MFnUnitAttribute.kAngle, 0.) | |
| cls.joint_orient_z = fnUnit.create("jointOrientZ", "joz", om2.MFnUnitAttribute.kAngle, 0.) | |
| cls.joint_orient = fnNumeric.create("jointOrient", "jo", cls.joint_orient_x, cls.joint_orient_y, cls.joint_orient_z) | |
| cls.addAttribute(cls.joint_orient) | |
| cls.input_rotate_order = fnEnum.create("inputRotateOrder", "iro", 0) | |
| [fnEnum.addField(["xyz", "yzx", "zxy", "xzy", "yxz", "zyx"][i], i) for i in range(6)] | |
| cls.addAttribute(cls.input_rotate_order) | |
| # OUPUTS | |
| cls.output_matrix = fnMatrix.create("outputMatrix", "om") | |
| fnMatrix.storable = False | |
| fnMatrix.keyable = False | |
| fnMatrix.connectable = True | |
| cls.addAttribute(cls.output_matrix) | |
| cls.output_translate_x = fnUnit.create("outputTranslateX", "otx", om2.MFnUnitAttribute.kDistance, 0.0) | |
| cls.output_translate_y = fnUnit.create("outputTranslateY", "oty", om2.MFnUnitAttribute.kDistance, 0.0) | |
| cls.output_translate_z = fnUnit.create("outputTranslateZ", "otz", om2.MFnUnitAttribute.kDistance, 0.0) | |
| cls.output_translate = fnNumeric.create("outputTranslate", "ot", cls.output_translate_x, cls.output_translate_y, cls.output_translate_z) | |
| cls.addAttribute(cls.output_translate) | |
| cls.output_rotate_x = fnUnit.create("outputRotateX", "orx", om2.MFnUnitAttribute.kAngle, 0.) | |
| cls.output_rotate_y = fnUnit.create("outputRotateY", "ory", om2.MFnUnitAttribute.kAngle, 0.) | |
| cls.output_rotate_z = fnUnit.create("outputRotateZ", "orz", om2.MFnUnitAttribute.kAngle, 0.) | |
| cls.output_rotate = fnNumeric.create("outputRotate", "or", cls.output_rotate_x, cls.output_rotate_y, cls.output_rotate_z) | |
| cls.addAttribute(cls.output_rotate) | |
| cls.output_scale_x = fnNumeric.create("outputScaleX", "osx", om2.MFnNumericData.kDouble, 1.0) | |
| cls.output_scale_y = fnNumeric.create("outputScaleY", "osy", om2.MFnNumericData.kDouble, 1.0) | |
| cls.output_scale_z = fnNumeric.create("outputScaleZ", "osz", om2.MFnNumericData.kDouble, 1.0) | |
| cls.output_scale = fnNumeric.create("outputScale", "os", cls.output_scale_x, cls.output_scale_y, cls.output_scale_z) | |
| cls.addAttribute(cls.output_scale) | |
| cls.output_shear_x = fnNumeric.create("outputShearX", "oshx", om2.MFnNumericData.kDouble, 0.0) | |
| cls.output_shear_y = fnNumeric.create("outputShearY", "oshy", om2.MFnNumericData.kDouble, 0.0) | |
| cls.output_shear_z = fnNumeric.create("outputShearZ", "oshz", om2.MFnNumericData.kDouble, 0.0) | |
| cls.output_shear = fnNumeric.create("outputShear", "osh", cls.output_shear_x, cls.output_shear_y, cls.output_shear_z) | |
| cls.addAttribute(cls.output_shear) | |
| cls.attributeAffects(cls.input_matrix, cls.output_matrix) | |
| cls.attributeAffects(cls.offset_matrix, cls.output_matrix) | |
| cls.attributeAffects(cls.parent_matrix, cls.output_matrix) | |
| cls.attributeAffects(cls.joint_orient, cls.output_matrix) | |
| cls.attributeAffects(cls.input_rotate_order, cls.output_matrix) | |
| cls.attributeAffects(cls.input_matrix, cls.output_translate) | |
| cls.attributeAffects(cls.offset_matrix, cls.output_translate) | |
| cls.attributeAffects(cls.parent_matrix, cls.output_translate) | |
| cls.attributeAffects(cls.joint_orient, cls.output_translate) | |
| cls.attributeAffects(cls.input_rotate_order, cls.output_translate) | |
| cls.attributeAffects(cls.input_matrix, cls.output_rotate) | |
| cls.attributeAffects(cls.offset_matrix, cls.output_rotate) | |
| cls.attributeAffects(cls.parent_matrix, cls.output_rotate) | |
| cls.attributeAffects(cls.joint_orient, cls.output_rotate) | |
| cls.attributeAffects(cls.input_rotate_order, cls.output_rotate) | |
| cls.attributeAffects(cls.input_matrix, cls.output_scale) | |
| cls.attributeAffects(cls.offset_matrix, cls.output_scale) | |
| cls.attributeAffects(cls.parent_matrix, cls.output_scale) | |
| cls.attributeAffects(cls.joint_orient, cls.output_scale) | |
| cls.attributeAffects(cls.input_rotate_order, cls.output_scale) | |
| cls.attributeAffects(cls.input_matrix, cls.output_shear) | |
| cls.attributeAffects(cls.offset_matrix, cls.output_shear) | |
| cls.attributeAffects(cls.parent_matrix, cls.output_shear) | |
| cls.attributeAffects(cls.joint_orient, cls.output_shear) | |
| cls.attributeAffects(cls.input_rotate_order, cls.output_shear) | |
| def compute(self, plug:om2.MPlug, data:om2.MDataBlock) -> None: | |
| if plug == self.output_matrix or plug == self.output_translate or plug == self.output_rotate or plug == self.output_scale or plug == self.output_shear: | |
| input_matrix = data.inputValue(self.input_matrix).asMatrix() | |
| parent_matrix = data.inputValue(self.parent_matrix).asMatrix() | |
| orient_matrix = om2.MTransformationMatrix() | |
| joint_orient_val = data.inputValue(self.joint_orient).asDouble3() | |
| orient_matrix.setRotation(om2.MEulerRotation(joint_orient_val).asQuaternion()) | |
| output_matrix = om2.MTransformationMatrix(data.inputValue(self.offset_matrix).asMatrix() * input_matrix * parent_matrix.inverse()) | |
| offset_orient_matrix = om2.MTransformationMatrix(input_matrix * (orient_matrix.asMatrix() * parent_matrix).inverse()) | |
| output_matrix.setRotation(offset_orient_matrix.rotation()) | |
| data.outputValue(self.output_matrix).setMMatrix(output_matrix.asMatrix()) | |
| data.outputValue(self.output_translate).set3Double(*output_matrix.translation(om2.MSpace.kTransform)) | |
| data.outputValue(self.output_rotate).set3Double(*om2.MEulerRotation(*output_matrix.rotation(asQuaternion=False), data.inputValue(self.input_rotate_order).asShort())) | |
| data.outputValue(self.output_scale).set3Double(*output_matrix.scale(om2.MSpace.kTransform)) | |
| data.outputValue(self.output_shear).set3Double(*output_matrix.shear(om2.MSpace.kTransform)) | |
| data.setClean(plug) | |
| def initializePlugin(obj:om2.MObject) -> None: | |
| fn_plugin = om2.MFnPlugin(obj) | |
| fn_plugin.registerNode(parentJointMatrix.__name__, parentJointMatrix.id_, parentJointMatrix.creator, parentJointMatrix.initialize) | |
| def uninitializePlugin(obj:om2.MObject) -> None: | |
| fn_plugin = om2.MFnPlugin(obj) | |
| fn_plugin.deregisterNode(parentJointMatrix.id_) |
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maya api 2.0 parent matrix custom node, that maintain 0.0.0 rotations angles on joints:
( also decompose matrix for direct translate, rotate, scale, shear connections )