void readSubD(double iFrame, MFnMesh & ioMesh, MObject & iParent,
SubDAndColors & iNode, bool iInitialized)
{
Alembic::AbcGeom::ISubDSchema schema = iNode.mMesh.getSchema();
Alembic::AbcGeom::MeshTopologyVariance ttype = schema.getTopologyVariance();
Alembic::AbcCoreAbstract::index_t index, ceilIndex;
double alpha = getWeightAndIndex(iFrame,
schema.getTimeSampling(), schema.getNumSamples(), index, ceilIndex);
MFloatPointArray pointArray;
Alembic::Abc::P3fArraySamplePtr ceilPoints;
// we can just read the points
if (ttype != Alembic::AbcGeom::kHeterogenousTopology && iInitialized)
{
Alembic::Abc::P3fArraySamplePtr points = schema.getPositionsProperty(
).getValue(Alembic::Abc::ISampleSelector(index));
if (alpha != 0.0)
{
ceilPoints = schema.getPositionsProperty().getValue(
Alembic::Abc::ISampleSelector(ceilIndex) );
}
fillPoints(pointArray, points, ceilPoints, alpha);
ioMesh.setPoints(pointArray, MSpace::kObject);
if (schema.getUVsParam().getNumSamples() > 1)
{
setUVs(iFrame, ioMesh, schema.getUVsParam());
}
setColors(iFrame, ioMesh, iNode.mC3s, iNode.mC4s, !iInitialized);
return;
}
// we need to read the topology
Alembic::AbcGeom::ISubDSchema::Sample samp;
schema.get(samp, Alembic::Abc::ISampleSelector(index));
if (alpha != 0.0 && ttype != Alembic::AbcGeom::kHeterogenousTopology)
{
ceilPoints = schema.getPositionsProperty().getValue(
Alembic::Abc::ISampleSelector(ceilIndex) );
}
fillPoints(pointArray, samp.getPositions(), ceilPoints, alpha);
fillTopology(ioMesh, iParent, pointArray, samp.getFaceIndices(),
samp.getFaceCounts());
setUVs(iFrame, ioMesh, schema.getUVsParam());
setColors(iFrame, ioMesh, iNode.mC3s, iNode.mC4s, !iInitialized);
}
MObject createSubD(double iFrame, SubDAndColors & iNode,
MObject & iParent)
{
Alembic::AbcGeom::ISubDSchema schema = iNode.mMesh.getSchema();
Alembic::AbcCoreAbstract::index_t index, ceilIndex;
getWeightAndIndex(iFrame, schema.getTimeSampling(),
schema.getNumSamples(), index, ceilIndex);
Alembic::AbcGeom::ISubDSchema::Sample samp;
schema.get(samp, Alembic::Abc::ISampleSelector(index));
MString name(iNode.mMesh.getName().c_str());
MFnMesh fnMesh;
MFloatPointArray pointArray;
Alembic::Abc::P3fArraySamplePtr emptyPtr;
fillPoints(pointArray, samp.getPositions(), emptyPtr, 0.0);
fillTopology(fnMesh, iParent, pointArray, samp.getFaceIndices(),
samp.getFaceCounts());
fnMesh.setName(iNode.mMesh.getName().c_str());
setInitialShadingGroup(fnMesh.partialPathName());
MObject obj = fnMesh.object();
setUVs(iFrame, fnMesh, schema.getUVsParam());
setColors(iFrame, fnMesh, iNode.mC3s, iNode.mC4s, true);
// add the mFn-specific attributes to fnMesh node
MFnNumericAttribute numAttr;
MString attrName("SubDivisionMesh");
MObject attrObj = numAttr.create(attrName, attrName,
MFnNumericData::kBoolean, 1);
numAttr.setKeyable(true);
numAttr.setHidden(false);
fnMesh.addAttribute(attrObj, MFnDependencyNode::kLocalDynamicAttr);
if (samp.getInterpolateBoundary() > 0)
{
attrName = MString("interpolateBoundary");
attrObj = numAttr.create(attrName, attrName, MFnNumericData::kBoolean,
samp.getInterpolateBoundary());
numAttr.setKeyable(true);
numAttr.setHidden(false);
fnMesh.addAttribute(attrObj, MFnDependencyNode::kLocalDynamicAttr);
}
if (samp.getFaceVaryingInterpolateBoundary() > 0)
{
attrName = MString("faceVaryingInterpolateBoundary");
attrObj = numAttr.create(attrName, attrName, MFnNumericData::kBoolean,
samp.getFaceVaryingInterpolateBoundary());
numAttr.setKeyable(true);
numAttr.setHidden(false);
fnMesh.addAttribute(attrObj, MFnDependencyNode::kLocalDynamicAttr);
}
if (samp.getFaceVaryingPropagateCorners() > 0)
{
attrName = MString("faceVaryingPropagateCorners");
attrObj = numAttr.create(attrName, attrName, MFnNumericData::kBoolean,
samp.getFaceVaryingPropagateCorners());
numAttr.setKeyable(true);
numAttr.setHidden(false);
fnMesh.addAttribute(attrObj, MFnDependencyNode::kLocalDynamicAttr);
}
#if MAYA_API_VERSION >= 201100
Alembic::Abc::Int32ArraySamplePtr holes = samp.getHoles();
if (holes && !holes->size() == 0)
{
unsigned int numHoles = (unsigned int)holes->size();
MUintArray holeData(numHoles);
for (unsigned int i = 0; i < numHoles; ++i)
{
holeData[i] = (*holes)[i];
}
if (fnMesh.setInvisibleFaces(holeData) != MS::kSuccess)
{
MString warn = "Failed to set holes on: ";
warn += iNode.mMesh.getName().c_str();
printWarning(warn);
}
}
#endif
Alembic::Abc::FloatArraySamplePtr creases = samp.getCreaseSharpnesses();
if (creases && !creases->size() == 0)
{
Alembic::Abc::Int32ArraySamplePtr indices = samp.getCreaseIndices();
Alembic::Abc::Int32ArraySamplePtr lengths = samp.getCreaseLengths();
std::size_t numLengths = lengths->size();
MUintArray edgeIds;
MDoubleArray creaseData;
std::size_t curIndex = 0;
// curIndex incremented here to move on to the next crease length
for (std::size_t i = 0; i < numLengths; ++i, ++curIndex)
{
std::size_t len = (*lengths)[i] - 1;
float creaseSharpness = (*creases)[i];
// curIndex incremented here to go between all the edges that make
// up a given length
for (std::size_t j = 0; j < len; ++j, ++curIndex)
{
Alembic::Util::int32_t vertA = (*indices)[curIndex];
Alembic::Util::int32_t vertB = (*indices)[curIndex+1];
MItMeshVertex itv(obj);
int prev;
itv.setIndex(vertA, prev);
MIntArray edges;
itv.getConnectedEdges(edges);
std::size_t numEdges = edges.length();
for (unsigned int k = 0; k < numEdges; ++k)
{
int oppVert = -1;
itv.getOppositeVertex(oppVert, edges[k]);
if (oppVert == vertB)
{
creaseData.append(creaseSharpness);
edgeIds.append(edges[k]);
break;
}
}
}
}
if (fnMesh.setCreaseEdges(edgeIds, creaseData) != MS::kSuccess)
{
MString warn = "Failed to set creases on: ";
warn += iNode.mMesh.getName().c_str();
printWarning(warn);
}
}
Alembic::Abc::FloatArraySamplePtr corners = samp.getCornerSharpnesses();
if (corners && !corners->size() == 0)
{
Alembic::Abc::Int32ArraySamplePtr cornerVerts = samp.getCornerIndices();
unsigned int numCorners = static_cast<unsigned int>(corners->size());
MUintArray vertIds(numCorners);
MDoubleArray cornerData(numCorners);
for (unsigned int i = 0; i < numCorners; ++i)
{
cornerData[i] = (*corners)[i];
vertIds[i] = (*cornerVerts)[i];
}
if (fnMesh.setCreaseVertices(vertIds, cornerData) != MS::kSuccess)
{
MString warn = "Failed to set corners on: ";
warn += iNode.mMesh.getName().c_str();
printWarning(warn);
}
}
return obj;
}
MObject createSubD(double iFrame, SubDAndFriends & iNode, MObject & iParent)
{
Alembic::AbcGeom::ISubDSchema schema = iNode.mMesh.getSchema();
Alembic::AbcCoreAbstract::index_t index, ceilIndex;
getWeightAndIndex(iFrame, schema.getTimeSampling(),
schema.getNumSamples(), index, ceilIndex);
Alembic::AbcGeom::ISubDSchema::Sample samp;
schema.get(samp, Alembic::Abc::ISampleSelector(index));
MString name(iNode.mMesh.getName().c_str());
MFnMesh fnMesh;
MFloatPointArray pointArray;
Alembic::Abc::P3fArraySamplePtr emptyPtr;
fillPoints(pointArray, samp.getPositions(), emptyPtr, 0.0);
fillTopology(fnMesh, iParent, pointArray, samp.getFaceIndices(),
samp.getFaceCounts());
fnMesh.setName(iNode.mMesh.getName().c_str());
setInitialShadingGroup(fnMesh.partialPathName());
MObject obj = fnMesh.object();
setColorsAndUVs(iFrame, fnMesh, schema.getUVsParam(),
iNode.mV2s, iNode.mC3s, iNode.mC4s, true);
// add the mFn-specific attributes to fnMesh node
MFnNumericAttribute numAttr;
MString attrName("SubDivisionMesh");
MObject attrObj = numAttr.create(attrName, attrName,
MFnNumericData::kBoolean, 1);
numAttr.setKeyable(true);
numAttr.setHidden(false);
fnMesh.addAttribute(attrObj, MFnDependencyNode::kLocalDynamicAttr);
if (samp.getInterpolateBoundary() > 0)
{
attrName = MString("interpolateBoundary");
attrObj = numAttr.create(attrName, attrName, MFnNumericData::kBoolean,
samp.getInterpolateBoundary());
numAttr.setKeyable(true);
numAttr.setHidden(false);
fnMesh.addAttribute(attrObj, MFnDependencyNode::kLocalDynamicAttr);
}
if (samp.getFaceVaryingInterpolateBoundary() > 0)
{
attrName = MString("faceVaryingInterpolateBoundary");
attrObj = numAttr.create(attrName, attrName, MFnNumericData::kBoolean,
samp.getFaceVaryingInterpolateBoundary());
numAttr.setKeyable(true);
numAttr.setHidden(false);
fnMesh.addAttribute(attrObj, MFnDependencyNode::kLocalDynamicAttr);
}
if (samp.getFaceVaryingPropagateCorners() > 0)
{
attrName = MString("faceVaryingPropagateCorners");
attrObj = numAttr.create(attrName, attrName, MFnNumericData::kBoolean,
samp.getFaceVaryingPropagateCorners());
numAttr.setKeyable(true);
numAttr.setHidden(false);
fnMesh.addAttribute(attrObj, MFnDependencyNode::kLocalDynamicAttr);
}
fillCreasesCornersAndHoles(fnMesh, iNode, samp);
return obj;
}