void readTranslationElement(KFbxTypedProperty<fbxDouble3>& prop,
osgAnimation::UpdateMatrixTransform* pUpdate,
osg::Matrix& staticTransform)
{
fbxDouble3 fbxPropValue = prop.Get();
osg::Vec3d val(
fbxPropValue[0],
fbxPropValue[1],
fbxPropValue[2]);
if (prop.GetKFCurve(KFCURVENODE_T_X) ||
prop.GetKFCurve(KFCURVENODE_T_Y) ||
prop.GetKFCurve(KFCURVENODE_T_Z))
{
if (!staticTransform.isIdentity())
{
pUpdate->getStackedTransforms().push_back(new osgAnimation::StackedMatrixElement(staticTransform));
staticTransform.makeIdentity();
}
pUpdate->getStackedTransforms().push_back(new osgAnimation::StackedTranslateElement("translate", val));
}
else
{
staticTransform.preMultTranslate(val);
}
}
void readTranslationElement(FbxPropertyT<FbxDouble3>& prop,
osgAnimation::UpdateMatrixTransform* pUpdate,
osg::Matrix& staticTransform,
FbxScene& fbxScene)
{
FbxDouble3 fbxPropValue = prop.Get();
osg::Vec3d val(
fbxPropValue[0],
fbxPropValue[1],
fbxPropValue[2]);
if (isAnimated(prop, fbxScene))
{
if (!staticTransform.isIdentity())
{
pUpdate->getStackedTransforms().push_back(new osgAnimation::StackedMatrixElement(staticTransform));
staticTransform.makeIdentity();
}
pUpdate->getStackedTransforms().push_back(new osgAnimation::StackedTranslateElement("translate", val));
}
else
{
staticTransform.preMultTranslate(val);
}
}
/** Get the transformation matrix which moves from local coords to world coords.*/
virtual bool computeLocalToWorldMatrix(osg::Matrix& matrix,osg::NodeVisitor* nv) const
{
osgUtil::CullVisitor* cv = dynamic_cast<osgUtil::CullVisitor*>(nv);
if (cv)
{
osg::Vec3 eyePointLocal = cv->getEyeLocal();
matrix.preMultTranslate(osg::Vec3(eyePointLocal.x(),eyePointLocal.y(),0.0f));
}
return true;
}
bool AbstractHimmel::computeWorldToLocalMatrix(osg::Matrix& matrix, osg::NodeVisitor* nv) const
{
osgUtil::CullVisitor* cv = dynamic_cast<osgUtil::CullVisitor*>(nv);
if(!cv)
return false;
const osg::Vec3f t(cv->getEyePoint());
matrix.preMultTranslate(-t);
return true;
}
bool computeLocalToWorldMatrix(osg::Matrix& matrix,osg::NodeVisitor* nv) const
{
osg::Quat billboardRotation;
osgUtil::CullVisitor* cullvisitor = dynamic_cast<osgUtil::CullVisitor*>(nv);
if (cullvisitor)
{
osg::Vec3 eyevector = cullvisitor->getEyeLocal()-_position;
eyevector.normalize();
osg::Vec3 side = _axis^_normal;
side.normalize();
float angle = atan2(eyevector*_normal,eyevector*side);
billboardRotation.makeRotate(osg::PI_2-angle,_axis);
}
matrix.preMultTranslate(_position);
matrix.preMultRotate(billboardRotation);
matrix.preMultRotate(_attitude);
matrix.preMultTranslate(-_pivotPoint);
return true;
}
void makeLocalMatrix(const FbxNode* pNode, osg::Matrix& m)
{
/*From http://area.autodesk.com/forum/autodesk-fbx/fbx-sdk/the-makeup-of-the-local-matrix-of-an-kfbxnode/
Local Matrix = LclTranslation * RotationOffset * RotationPivot *
PreRotation * LclRotation * PostRotation * RotationPivotInverse *
ScalingOffset * ScalingPivot * LclScaling * ScalingPivotInverse
LocalTranslation : translate (xform -query -translation)
RotationOffset: translation compensates for the change in the rotate pivot point (xform -q -rotateTranslation)
RotationPivot: current rotate pivot position (xform -q -rotatePivot)
PreRotation : joint orientation(pre rotation)
LocalRotation: rotate transform (xform -q -rotation & xform -q -rotateOrder)
PostRotation : rotate axis (xform -q -rotateAxis)
RotationPivotInverse: inverse of RotationPivot
ScalingOffset: translation compensates for the change in the scale pivot point (xform -q -scaleTranslation)
ScalingPivot: current scale pivot position (xform -q -scalePivot)
LocalScaling: scale transform (xform -q -scale)
ScalingPivotInverse: inverse of ScalingPivot
*/
// When this flag is set to false, the RotationOrder, the Pre/Post rotation
// values and the rotation limits should be ignored.
bool rotationActive = pNode->RotationActive.Get();
EFbxRotationOrder fbxRotOrder = rotationActive ? pNode->RotationOrder.Get() : eEulerXYZ;
FbxDouble3 fbxLclPos = pNode->LclTranslation.Get();
FbxDouble3 fbxRotOff = pNode->RotationOffset.Get();
FbxDouble3 fbxRotPiv = pNode->RotationPivot.Get();
FbxDouble3 fbxPreRot = pNode->PreRotation.Get();
FbxDouble3 fbxLclRot = pNode->LclRotation.Get();
FbxDouble3 fbxPostRot = pNode->PostRotation.Get();
FbxDouble3 fbxSclOff = pNode->ScalingOffset.Get();
FbxDouble3 fbxSclPiv = pNode->ScalingPivot.Get();
FbxDouble3 fbxLclScl = pNode->LclScaling.Get();
m.makeTranslate(osg::Vec3d(
fbxLclPos[0] + fbxRotOff[0] + fbxRotPiv[0],
fbxLclPos[1] + fbxRotOff[1] + fbxRotPiv[1],
fbxLclPos[2] + fbxRotOff[2] + fbxRotPiv[2]));
if (rotationActive)
{
m.preMultRotate(
makeQuat(fbxPostRot, fbxRotOrder) *
makeQuat(fbxLclRot, fbxRotOrder) *
makeQuat(fbxPreRot, fbxRotOrder));
}
else
{
m.preMultRotate(makeQuat(fbxLclRot, fbxRotOrder));
}
m.preMultTranslate(osg::Vec3d(
fbxSclOff[0] + fbxSclPiv[0] - fbxRotPiv[0],
fbxSclOff[1] + fbxSclPiv[1] - fbxRotPiv[1],
fbxSclOff[2] + fbxSclPiv[2] - fbxRotPiv[2]));
m.preMultScale(osg::Vec3d(fbxLclScl[0], fbxLclScl[1], fbxLclScl[2]));
m.preMultTranslate(osg::Vec3d(
-fbxSclPiv[0],
-fbxSclPiv[1],
-fbxSclPiv[2]));
}
void StackedTranslateElement::applyToMatrix(osg::Matrix& matrix) const {matrix.preMultTranslate(_translate);}
