Abc::FloatArraySamplePtr getKnotVector(AbcG::ICurves& obj)
{
ESS_PROFILE_FUNC();
Abc::ICompoundProperty arbGeom = obj.getSchema().getArbGeomParams();
if (!arbGeom.valid()) {
return Abc::FloatArraySamplePtr();
}
if (arbGeom.getPropertyHeader(".knot_vectors") != NULL) {
Abc::IFloatArrayProperty knotProp =
Abc::IFloatArrayProperty(arbGeom, ".knot_vectors");
if (knotProp.valid() && knotProp.getNumSamples() != 0) {
return knotProp.getValue(0);
}
}
if (arbGeom.getPropertyHeader(".knot_vector") != NULL) {
Abc::IFloatArrayProperty knotProp =
Abc::IFloatArrayProperty(arbGeom, ".knot_vector");
if (knotProp.valid() && knotProp.getNumSamples() != 0) {
return knotProp.getValue(0);
}
}
return Abc::FloatArraySamplePtr();
}
Abc::UInt16ArraySamplePtr getCurveOrders(AbcG::ICurves& obj)
{
ESS_PROFILE_FUNC();
Abc::ICompoundProperty arbGeom = obj.getSchema().getArbGeomParams();
if(!arbGeom.valid()){
return Abc::UInt16ArraySamplePtr();
}
if ( arbGeom.getPropertyHeader( ".orders" ) != NULL ){
Abc::IUInt16ArrayProperty orders = Abc::IUInt16ArrayProperty( arbGeom, ".orders" );
if(orders.valid() && orders.getNumSamples() != 0){
return orders.getValue(0);
}
}
return Abc::UInt16ArraySamplePtr();
}
MStatus AlembicCurvesLocatorNode::compute(const MPlug &plug,
MDataBlock &dataBlock)
{
ESS_PROFILE_SCOPE("AlembicCurvesLocatorNode::compute");
MStatus status;
// update the frame number to be imported
double inputTime =
dataBlock.inputValue(mTimeAttr).asTime().as(MTime::kSeconds);
MString &fileName = dataBlock.inputValue(mFileNameAttr).asString();
MString &identifier = dataBlock.inputValue(mIdentifierAttr).asString();
AbcG::ICurves obj;
// check if we have the file
if (fileName != mFileName || identifier != mIdentifier) {
mSchema.reset();
if (fileName != mFileName) {
delRefArchive(mFileName);
mFileName = fileName;
addRefArchive(mFileName);
}
mIdentifier = identifier;
// get the object from the archive
Abc::IObject iObj = getObjectFromArchive(mFileName, identifier);
if (!iObj.valid()) {
MGlobal::displayWarning("[ExocortexAlembic] Identifier '" + identifier +
"' not found in archive '" + mFileName + "'.");
return MStatus::kFailure;
}
obj = AbcG::ICurves(iObj, Abc::kWrapExisting);
if (!obj.valid()) {
MGlobal::displayWarning("[ExocortexAlembic] Identifier '" + identifier +
"' in archive '" + mFileName +
"' is not a Curves.");
return MStatus::kFailure;
}
mSchema = obj.getSchema();
}
if (!mSchema.valid()) {
return MStatus::kFailure;
}
// get the sample
SampleInfo sampleInfo = getSampleInfo(inputTime, mSchema.getTimeSampling(),
mSchema.getNumSamples());
// check if we have to do this at all
if (mNbCurves == 0 || mLastSampleInfo.floorIndex != sampleInfo.floorIndex ||
mLastSampleInfo.ceilIndex != sampleInfo.ceilIndex) {
AbcG::ICurvesSchema::Sample sample;
AbcG::ICurvesSchema::Sample sample2;
mSchema.get(sample, sampleInfo.floorIndex);
if (sampleInfo.alpha != 0.0) {
mSchema.get(sample2, sampleInfo.ceilIndex);
}
// update the indices
Abc::P3fArraySamplePtr samplePos = sample.getPositions();
if (mNbCurves != sample.getNumCurves() ||
mNbVertices != samplePos->size()) {
mNbCurves = (unsigned int)sample.getNumCurves();
mNbVertices = (unsigned int)samplePos->size();
Abc::Int32ArraySamplePtr nbVertices = sample.getCurvesNumVertices();
mIndices.clear();
unsigned int offset = 0;
for (unsigned int i = 0; i < mNbCurves; i++) {
unsigned int verticesPerCurve = nbVertices->get()[i];
for (unsigned j = 0; j < verticesPerCurve - 1; j++) {
mIndices.push_back(offset);
offset++;
mIndices.push_back(offset);
}
offset++;
}
}
if (mPositions.size() != samplePos->size()) {
mPositions.resize(samplePos->size());
}
// check if we need to interpolate
bool done = false;
mBoundingBox.clear();
if (sampleInfo.alpha != 0.0) {
Abc::P3fArraySamplePtr samplePos2 = sample2.getPositions();
if (samplePos->size() == samplePos2->size()) {
float alpha = float(sampleInfo.alpha);
float ialpha = 1.0f - alpha;
for (unsigned int i = 0; i < samplePos->size(); i++) {
mPositions[i].x =
ialpha * samplePos->get()[i].x + alpha * samplePos2->get()[i].x;
mPositions[i].y =
ialpha * samplePos->get()[i].y + alpha * samplePos2->get()[i].y;
mPositions[i].z =
ialpha * samplePos->get()[i].z + alpha * samplePos2->get()[i].z;
mBoundingBox.expand(
MPoint(mPositions[i].x, mPositions[i].y, mPositions[i].z));
}
done = true;
}
}
if (!done) {
for (unsigned int i = 0; i < samplePos->size(); i++) {
mPositions[i].x = samplePos->get()[i].x;
mPositions[i].y = samplePos->get()[i].y;
mPositions[i].z = samplePos->get()[i].z;
mBoundingBox.expand(
MPoint(mPositions[i].x, mPositions[i].y, mPositions[i].z));
}
}
// get the colors
// mColors.clear();
Abc::IC4fArrayProperty propColor;
if (getArbGeomParamPropertyAlembic(obj, "color", propColor)) {
mColors.clear();
SampleInfo colorSampleInfo = getSampleInfo(
inputTime, propColor.getTimeSampling(), propColor.getNumSamples());
Abc::C4fArraySamplePtr sampleColor =
propColor.getValue(colorSampleInfo.floorIndex);
mColors.resize(mPositions.size());
if (sampleColor->size() == 1) {
for (unsigned int i = 0; i < (unsigned int)mColors.size(); i++) {
mColors[i].r = sampleColor->get()[0].r;
mColors[i].g = sampleColor->get()[0].g;
mColors[i].b = sampleColor->get()[0].b;
mColors[i].a = sampleColor->get()[0].a;
}
}
else if (sampleColor->size() == mPositions.size()) {
for (unsigned int i = 0; i < sampleColor->size(); i++) {
mColors[i].r = sampleColor->get()[i].r;
mColors[i].g = sampleColor->get()[i].g;
mColors[i].b = sampleColor->get()[i].b;
mColors[i].a = sampleColor->get()[i].a;
}
}
else if (sampleColor->size() == mNbCurves) {
Abc::Int32ArraySamplePtr nbVertices = sample.getCurvesNumVertices();
unsigned int offset = 0;
for (unsigned int i = 0; i < nbVertices->size(); i++) {
for (unsigned j = 0; j < (unsigned int)nbVertices->get()[i]; j++) {
mColors[offset].r = sampleColor->get()[i].r;
mColors[offset].g = sampleColor->get()[i].g;
mColors[offset].b = sampleColor->get()[i].b;
mColors[offset].a = sampleColor->get()[i].a;
offset++;
}
}
}
}
}
mLastSampleInfo = sampleInfo;
MDataHandle outSent = dataBlock.outputValue(mSentinelAttr);
// increment, this tells the draw routine that the display list needs to be
// regenerated
outSent.set((mSent + 1 % 10));
dataBlock.setClean(mSentinelAttr);
return MStatus::kSuccess;
}