void Exporter::RecursiveJointExtraction(MFnTransform& joint, int parentIndex){
Bone output;
output.parent = parentIndex;
output.invBindPose = joint.transformation().asMatrixInverse().matrix;
MItDependencyNodes matIt(MFn::kAnimCurve);
while (!matIt.isDone())
{
MFnAnimCurve animCurve(matIt.item());
if (!strcmp(animCurve.name().substring(0, joint.name().length() - 1).asChar(), joint.name().asChar())){
cout << animCurve.name().asChar() << endl;
std::string type = animCurve.name().substring(joint.name().length(), animCurve.name().length()).asChar();
output.frames.resize(animCurve.time(animCurve.numKeys() - 1).value());
for (int i = 0; i < output.frames.size(); i++)
{
MTime time;
time.setValue(i);
output.frames[i].time = time.value();
if (!strcmp(type.c_str(), "_translateX")){
cout << animCurve.evaluate(time) << endl;
output.frames[i].trans.x = animCurve.evaluate(time);
}
if (!strcmp(type.c_str(), "_translateY")){
cout << animCurve.evaluate(time) << endl;
output.frames[i].trans.y = animCurve.evaluate(time);
}
if (!strcmp(type.c_str(), "_translateZ")){
cout << animCurve.evaluate(time) << endl;
output.frames[i].trans.z = animCurve.evaluate(time);
}
if (!strcmp(type.c_str(), "_rotateX")){
cout << animCurve.evaluate(time) << endl;
output.frames[i].rot.x = animCurve.evaluate(time);
}
if (!strcmp(type.c_str(), "_rotateY")){
cout << animCurve.evaluate(time) << endl;
output.frames[i].rot.y = animCurve.evaluate(time);
}
if (!strcmp(type.c_str(), "_rotateZ")){
cout << animCurve.evaluate(time) << endl;
output.frames[i].rot.z = animCurve.evaluate(time);
}
}
}
matIt.next();
}
scene_.skeleton.push_back(output);
int children = joint.childCount();
int parent = scene_.skeleton.size() - 1;
for (int i = 0; i < children; i++)
RecursiveJointExtraction(MFnTransform(joint.child(i)), parent);
};
// -------------------------------------------
MTime AnimationHelper::animationEndTime()
{
MTime time ( MAnimControl::currentTime() );
double result;
MGlobal::executeCommand ( "playbackOptions -q -" TEND, result );
time.setValue ( result );
return time;
}
MStatus
XmlCacheFormat::readTime( MTime& time )
{
MStringArray timeValue;
readXmlTagValue(timeTag, timeValue);
time.setValue( strtod( timeValue[0].asChar(), NULL ) );
return MS::kSuccess;
}
void DMPDSExporter::fillBones( DMPSkeletonData::SubSkeletonStruct* subSkel, string parent, DMPParameters* param, MDagPath& jointDag )
{
MStatus status;
if (jointDag.apiType() != MFn::kJoint)
{
return; // early out.
}
DMPSkeletonData::BoneStruct newBone;
newBone.boneHandle = (unsigned int)subSkel->bones.size();
newBone.name = jointDag.partialPathName().asUTF8();
newBone.parentName = parent;
MFnIkJoint fnJoint(jointDag, &status);
// matrix = [S] * [RO] * [R] * [JO] * [IS] * [T]
/*
These matrices are defined as follows:
•[S] : scale
•[RO] : rotateOrient (attribute name is rotateAxis)
•[R] : rotate
•[JO] : jointOrient
•[IS] : parentScaleInverse
•[T] : translate
The methods to get the value of these matrices are:
•[S] : getScale
•[RO] : getScaleOrientation
•[R] : getRotation
•[JO] : getOrientation
•[IS] : (the inverse of the getScale on the parent transformation matrix)
•[T] : translation
*/
MVector trans = fnJoint.getTranslation(MSpace::kTransform);
double scale[3];
fnJoint.getScale(scale);
MQuaternion R, RO, JO;
fnJoint.getScaleOrientation(RO);
fnJoint.getRotation(R);
fnJoint.getOrientation(JO);
MQuaternion rot = RO * R * JO;
newBone.translate[0] = trans.x * param->lum;
newBone.translate[1] = trans.y * param->lum;
newBone.translate[2] = trans.z * param->lum;
newBone.orientation[0] = rot.w;
newBone.orientation[1] = rot.x;
newBone.orientation[2] = rot.y;
newBone.orientation[3] = rot.z;
newBone.scale[0] = scale[0];
newBone.scale[1] = scale[1];
newBone.scale[2] = scale[2];
subSkel->bones.push_back(newBone);
// Load child joints
for (unsigned int i=0; i<jointDag.childCount();i++)
{
MObject child;
child = jointDag.child(i);
MDagPath childDag = jointDag;
childDag.push(child);
fillBones(subSkel, newBone.name, param, childDag);
}
// now go for animations
if (param->bExportSkelAnimation)
{
for (unsigned int i = 0; i < subSkel->animations.size(); ++i)
{
DMPSkeletonData::TransformAnimation& anim = subSkel->animations[i];
DMPSkeletonData::TransformTrack subTrack;
subTrack.targetBone = newBone.name;
MPlug plugT; // translate
MPlug plugR; // R
MPlug plugRO; // RO
MPlug plugJO; // JO
MPlug plugS; // scale
double dataT[3];
double dataR[3];
double dataRO[3];
double dataJO[3];
double dataS[3];
MFnDependencyNode fnDependNode( jointDag.node(), &status );
plugT = fnDependNode.findPlug("translate", false, &status);
plugR = fnDependNode.findPlug("rotate", false, &status);
plugRO = fnDependNode.findPlug("rotateAxis", false, &status);
plugJO = fnDependNode.findPlug("jointOrient", false, &status);
plugS = fnDependNode.findPlug("scale", false, &status);
float timeStep = param->samplerRate;
if (param->animSampleType == DMPParameters::AST_Frame)
{
timeStep /= param->fps;
}
for (float curTime = anim.startTime; curTime <= anim.endTime; curTime += timeStep)
{
MTime mayaTime;
DMPSkeletonData::TransformKeyFrame keyframe;
keyframe.time = curTime - anim.startTime;
mayaTime.setUnit(MTime::kSeconds);
mayaTime.setValue(curTime);
// Get its value at the specified Time.
plugT.child(0).getValue(dataT[0], MDGContext(mayaTime));
plugT.child(1).getValue(dataT[1], MDGContext(mayaTime));
plugT.child(2).getValue(dataT[2], MDGContext(mayaTime));
plugR.child(0).getValue(dataR[0], MDGContext(mayaTime));
plugR.child(1).getValue(dataR[1], MDGContext(mayaTime));
plugR.child(2).getValue(dataR[2], MDGContext(mayaTime));
plugRO.child(0).getValue(dataRO[0], MDGContext(mayaTime));
plugRO.child(1).getValue(dataRO[1], MDGContext(mayaTime));
plugRO.child(2).getValue(dataRO[2], MDGContext(mayaTime));
plugJO.child(0).getValue(dataJO[0], MDGContext(mayaTime));
plugJO.child(1).getValue(dataJO[1], MDGContext(mayaTime));
plugJO.child(2).getValue(dataJO[2], MDGContext(mayaTime));
plugS.child(0).getValue(dataS[0], MDGContext(mayaTime));
plugS.child(1).getValue(dataS[1], MDGContext(mayaTime));
plugS.child(2).getValue(dataS[2], MDGContext(mayaTime));
// fill the frame.
keyframe.translate[0] = dataT[0] * param->lum;
keyframe.translate[1] = dataT[1] * param->lum;
keyframe.translate[2] = dataT[2] * param->lum;
// calculate quaternion.
MEulerRotation rotR(dataR[0], dataR[1], dataR[2]);
MEulerRotation rotRO(dataRO[0], dataRO[1], dataRO[2]);
MEulerRotation rotJO(dataJO[0], dataJO[1], dataJO[2]);
MQuaternion finalRot = rotRO.asQuaternion()*rotR.asQuaternion()*rotJO.asQuaternion();
keyframe.orientation[0] = finalRot.w;
keyframe.orientation[1] = finalRot.x;
keyframe.orientation[2] = finalRot.y;
keyframe.orientation[3] = finalRot.z;
keyframe.scale[0] = dataS[0];
keyframe.scale[1] = dataS[1];
keyframe.scale[2] = dataS[2];
subTrack.frames.push_back(keyframe);
}
anim.tracks.push_back(subTrack);
}
}
}