bool dagPoseInfo::findDagPose(MObject& jointNode)
//
// Description:
// Given a joint, check for connected dag pose nodes.
// For each pose found, write out the pose info.
// Return:
// If one or more poses is found, return true, else return false.
//
{
bool rtn = 0; // return 1 if we find a pose
MStatus status;
MFnDependencyNode fnJoint(jointNode);
MObject aBindPose = fnJoint.attribute("bindPose",&status);
if (MS::kSuccess == status) {
unsigned connLength = 0;
MPlugArray connPlugs;
MPlug pBindPose(jointNode,aBindPose);
pBindPose.connectedTo(connPlugs,false,true);
connLength = connPlugs.length();
for (unsigned ii = 0; ii < connLength; ++ii) {
if (connPlugs[ii].node().apiType() == MFn::kDagPose) {
MObject aMember = connPlugs[ii].attribute();
MFnAttribute fnAttr(aMember);
if (fnAttr.name() == "worldMatrix") {
unsigned jointIndex = connPlugs[ii].logicalIndex();
fprintf(file,"%s\n",fnJoint.name().asChar());
MObject jointObject = connPlugs[ii].node();
printDagPoseInfo(jointObject,jointIndex);
rtn = 1;
}
}
}
}
return rtn;
}
MStatus exportJointClusterData::doIt( const MArgList& args )
//
// Process the command
// 1. parse the args
// 2. find the jointClusters in the scene
// 3. iterate over their members, writing their weight data out to file
//
{
// parse args to get the file name from the command-line
//
MStatus stat = parseArgs(args);
if (stat != MS::kSuccess) {
return stat;
}
// count the processed jointClusters
//
unsigned int jcCount = 0;
// Iterate through graph and search for jointCluster nodes
//
MItDependencyNodes iter( MFn::kJointCluster);
for ( ; !iter.isDone(); iter.next() ) {
MObject object = iter.item();
MFnWeightGeometryFilter jointCluster(object);
// get the joint driving this cluster
//
MObject joint = jointForCluster(object);
if (joint.isNull()) {
displayError("Joint is not attached to cluster.");
continue;
}
MObject deformSet = jointCluster.deformerSet(&stat);
CheckError(stat,"Error getting deformer set.");
MFnSet setFn(deformSet, &stat); //need the fn to get the members
CheckError(stat,"Error getting deformer set fn.");
MSelectionList clusterSetList;
//get all the members
//
stat = setFn.getMembers(clusterSetList, true);
CheckError(stat,"Could not make member list with getMembers.");
// print out the name of joint and the number of associated skins
//
MFnDependencyNode fnJoint(joint);
fprintf(file,"%s %u\n",fnJoint.name().asChar(),
clusterSetList.length());
for (unsigned int kk = 0; kk < clusterSetList.length(); ++kk) {
MDagPath skinpath;
MObject components;
MFloatArray weights;
clusterSetList.getDagPath(kk,skinpath,components);
jointCluster.getWeights(skinpath,components,weights);
// print out the path name of the skin & the weight count
//
fprintf(file,
"%s %u\n",skinpath.partialPathName().asChar(),
weights.length());
// loop through the components and print their index and weight
//
unsigned counter =0;
MItGeometry gIter(skinpath,components);
for (/* nothing */ ; !gIter.isDone() &&
counter < weights.length(); gIter.next()) {
fprintf(file,"%d %f\n",gIter.index(),weights[counter]);
counter++;
}
}
jcCount++;
}
fclose(file);
if (0 == jcCount) {
displayError("No jointClusters found in this scene.");
return MS::kFailure;
}
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);
}
}
}