void XFileLoader::ReadFaceArray(istream& s, vector<unsigned short>& indices)
{
int nFaces;
ReadMember(s, nFaces);
indices.reserve(nFaces * 3);
for (int i = 0; i < nFaces; ++i)
{
if (i != 0)
SkipToken(s, XFileToken::Comma);
int nIndices;
ReadMember(s, nIndices);
vector<int> faceIndices(nIndices);
ReadArray(s, faceIndices.begin(), faceIndices.end());
for (int i = 1; i < nIndices - 1; ++i)
{
indices.push_back(faceIndices[0]);
indices.push_back(faceIndices[i]);
indices.push_back(faceIndices[i + 1]);
}
}
SkipToken(s, XFileToken::Semicolon);
}
void
OsdPtexMeshData::rebuildHbrMeshIfNeeded(OpenSubdivPtexShader *shader)
{
MStatus status;
if (!_meshTopoDirty && !shader->getHbrMeshDirty())
return;
MFnMesh meshFn(_meshDagPath, &status);
if (status != MS::kSuccess) return;
int level = shader->getLevel();
if (level < 1) level =1;
SchemeType scheme = shader->getScheme();
if (scheme == kLoop) scheme = kCatmark; // XXX: avoid loop for now
// Get Maya vertex topology and crease data
MIntArray vertexCount;
MIntArray vertexList;
meshFn.getVertices(vertexCount, vertexList);
MUintArray edgeIds;
MDoubleArray edgeCreaseData;
meshFn.getCreaseEdges(edgeIds, edgeCreaseData);
MUintArray vtxIds;
MDoubleArray vtxCreaseData;
meshFn.getCreaseVertices(vtxIds, vtxCreaseData);
if (vertexCount.length() == 0) return;
// Cache attribute values
_level = shader->getLevel();
_scheme = shader->getScheme();
_kernel = shader->getKernel();
_adaptive = shader->isAdaptive();
_interpBoundary = shader->getInterpolateBoundary();
// Copy Maya vectors into std::vectors
std::vector<int> numIndices(&vertexCount[0], &vertexCount[vertexCount.length()]);
std::vector<int> faceIndices(&vertexList[0], &vertexList[vertexList.length()]);
std::vector<int> vtxCreaseIndices(&vtxIds[0], &vtxIds[vtxIds.length()]);
std::vector<double> vtxCreases(&vtxCreaseData[0], &vtxCreaseData[vtxCreaseData.length()]);
std::vector<double> edgeCreases(&edgeCreaseData[0], &edgeCreaseData[edgeCreaseData.length()]);
// Edge crease index is stored as pairs of vertex ids
int nEdgeIds = edgeIds.length();
std::vector<int> edgeCreaseIndices;
edgeCreaseIndices.resize(nEdgeIds*2);
for (int i = 0; i < nEdgeIds; ++i) {
int2 vertices;
status = meshFn.getEdgeVertices(edgeIds[i], vertices);
if (status.error()) {
status.perror("ERROR can't get creased edge vertices");
continue;
}
edgeCreaseIndices[i*2] = vertices[0];
edgeCreaseIndices[i*2+1] = vertices[1];
}
// Convert attribute enums to HBR enums (this is why the enums need to match)
// XXX use some sort of built-in transmorgification avoid assumption?
HbrMeshUtil::SchemeType hbrScheme = (HbrMeshUtil::SchemeType) _scheme;
OsdHbrMesh::InterpolateBoundaryMethod hbrInterpBoundary =
(OsdHbrMesh::InterpolateBoundaryMethod) _interpBoundary;
// Convert Maya mesh to internal HBR representation
_hbrmesh = ConvertToHBR(meshFn.numVertices(), numIndices, faceIndices,
vtxCreaseIndices, vtxCreases,
std::vector<int>(), std::vector<float>(),
edgeCreaseIndices, edgeCreases,
hbrInterpBoundary,
hbrScheme,
true ); // add ptex indices to HBR
// note: GL function can't be used in prepareForDraw API.
_needsInitializeMesh = true;
// Mesh topology data is up to date
_meshTopoDirty = false;
shader->setHbrMeshDirty(false);
}
// #### rebuildHbrMeshIfNeeded
//
// If the topology of the mesh changes, or any attributes that affect
// how the mesh is computed the original HBR needs to be rebuilt
// which will trigger a rebuild of the FAR mesh and subsequent buffers.
//
void
OsdMeshData::rebuildHbrMeshIfNeeded(OpenSubdivShader *shader)
{
MStatus status = MS::kSuccess;
if (!_meshTopoDirty && !shader->getHbrMeshDirty())
return;
MFnMesh meshFn(_meshDagPath);
// Cache attribute values
_level = shader->getLevel();
_kernel = shader->getKernel();
_adaptive = shader->isAdaptive();
_uvSet = shader->getUVSet();
// Get Maya vertex topology and crease data
MIntArray vertexCount;
MIntArray vertexList;
meshFn.getVertices(vertexCount, vertexList);
MUintArray edgeIds;
MDoubleArray edgeCreaseData;
meshFn.getCreaseEdges(edgeIds, edgeCreaseData);
MUintArray vtxIds;
MDoubleArray vtxCreaseData;
meshFn.getCreaseVertices(vtxIds, vtxCreaseData);
if (vertexCount.length() == 0) return;
// Copy Maya vectors into std::vectors
std::vector<int> numIndices(&vertexCount[0], &vertexCount[vertexCount.length()]);
std::vector<int> faceIndices(&vertexList[0], &vertexList[vertexList.length()]);
std::vector<int> vtxCreaseIndices(&vtxIds[0], &vtxIds[vtxIds.length()]);
std::vector<double> vtxCreases(&vtxCreaseData[0], &vtxCreaseData[vtxCreaseData.length()]);
std::vector<double> edgeCreases(&edgeCreaseData[0], &edgeCreaseData[edgeCreaseData.length()]);
// Edge crease index is stored as pairs of vertex ids
int nEdgeIds = edgeIds.length();
std::vector<int> edgeCreaseIndices;
edgeCreaseIndices.resize(nEdgeIds*2);
for (int i = 0; i < nEdgeIds; ++i) {
int2 vertices;
status = meshFn.getEdgeVertices(edgeIds[i], vertices);
if (status.error()) {
MERROR(status, "OpenSubdivShader: Can't get edge vertices");
continue;
}
edgeCreaseIndices[i*2] = vertices[0];
edgeCreaseIndices[i*2+1] = vertices[1];
}
// Convert attribute enums to HBR enums (this is why the enums need to match)
HbrMeshUtil::SchemeType hbrScheme = (HbrMeshUtil::SchemeType) shader->getScheme();
OsdHbrMesh::InterpolateBoundaryMethod hbrInterpBoundary =
(OsdHbrMesh::InterpolateBoundaryMethod) shader->getInterpolateBoundary();
OsdHbrMesh::InterpolateBoundaryMethod hbrInterpUVBoundary =
(OsdHbrMesh::InterpolateBoundaryMethod) shader->getInterpolateUVBoundary();
// clear any existing face-varying descriptor
if (_fvarDesc) {
delete _fvarDesc;
_fvarDesc = NULL;
}
// read UV data from maya and build per-face per-vert list of UVs for HBR face-varying data
std::vector< float > uvList;
status = buildUVList( meshFn, uvList );
if (! status.error()) {
// Create face-varying data descriptor. The memory required for indices
// and widths needs to stay alive as the HBR library only takes in the
// pointers and assumes the client will maintain the memory so keep _fvarDesc
// around as long as _hbrmesh is around.
int fvarIndices[] = { 0, 1 };
int fvarWidths[] = { 1, 1 };
_fvarDesc = new FVarDataDesc( 2, fvarIndices, fvarWidths, 2, hbrInterpUVBoundary );
}
if (_fvarDesc && hbrScheme != HbrMeshUtil::kCatmark) {
MGlobal::displayWarning("Face-varying not yet supported for Loop/Bilinear, using Catmull-Clark");
hbrScheme = HbrMeshUtil::kCatmark;
}
// Convert Maya mesh to internal HBR representation
_hbrmesh = ConvertToHBR(meshFn.numVertices(), numIndices, faceIndices,
vtxCreaseIndices, vtxCreases,
std::vector<int>(), std::vector<float>(),
edgeCreaseIndices, edgeCreases,
hbrInterpBoundary,
hbrScheme,
false, // no ptex
_fvarDesc,
_fvarDesc?&uvList:NULL); // yes fvar (if have UVs)
// note: GL function can't be used in prepareForDraw API.
_needsInitializeMesh = true;
// Mesh topology data is up to date
_meshTopoDirty = false;
shader->setHbrMeshDirty(false);
}
MayaMeshWriter::MayaMeshWriter(MDagPath & iDag,
Alembic::Abc::OObject & iParent, Alembic::Util::uint32_t iTimeIndex,
const JobArgs & iArgs, GetMembersMap& gmMap)
: mNoNormals(iArgs.noNormals),
mWriteUVs(iArgs.writeUVs),
mWriteColorSets(iArgs.writeColorSets),
mWriteUVSets(iArgs.writeUVSets),
mIsGeometryAnimated(false),
mDagPath(iDag)
{
MStatus status = MS::kSuccess;
MFnMesh lMesh( mDagPath, &status );
if ( !status )
{
MGlobal::displayError( "MFnMesh() failed for MayaMeshWriter" );
}
// intermediate objects aren't translated
MObject surface = iDag.node();
if (iTimeIndex != 0 && util::isAnimated(surface))
{
mIsGeometryAnimated = true;
}
else
{
iTimeIndex = 0;
}
std::vector<float> uvs;
std::vector<Alembic::Util::uint32_t> indices;
std::string uvSetName;
MString name = lMesh.name();
name = util::stripNamespaces(name, iArgs.stripNamespace);
// check to see if this poly has been tagged as a SubD
MPlug plug = lMesh.findPlug("SubDivisionMesh");
if ( !plug.isNull() && plug.asBool() )
{
Alembic::AbcGeom::OSubD obj(iParent, name.asChar(), iTimeIndex);
mSubDSchema = obj.getSchema();
Alembic::AbcGeom::OV2fGeomParam::Sample uvSamp;
if (mWriteUVs || mWriteUVSets)
{
getUVs(uvs, indices, uvSetName);
if (!uvs.empty())
{
if (!uvSetName.empty())
{
mSubDSchema.setUVSourceName(uvSetName);
}
uvSamp.setScope( Alembic::AbcGeom::kFacevaryingScope );
uvSamp.setVals(Alembic::AbcGeom::V2fArraySample(
(const Imath::V2f *) &uvs.front(), uvs.size() / 2));
if (!indices.empty())
{
uvSamp.setIndices(Alembic::Abc::UInt32ArraySample(
&indices.front(), indices.size()));
}
}
}
Alembic::Abc::OCompoundProperty cp;
Alembic::Abc::OCompoundProperty up;
if (AttributesWriter::hasAnyAttr(lMesh, iArgs))
{
cp = mSubDSchema.getArbGeomParams();
up = mSubDSchema.getUserProperties();
}
mAttrs = AttributesWriterPtr(new AttributesWriter(cp, up, obj, lMesh,
iTimeIndex, iArgs));
writeSubD(uvSamp);
}
else
{
Alembic::AbcGeom::OPolyMesh obj(iParent, name.asChar(), iTimeIndex);
mPolySchema = obj.getSchema();
Alembic::AbcGeom::OV2fGeomParam::Sample uvSamp;
if (mWriteUVs || mWriteUVSets)
{
getUVs(uvs, indices, uvSetName);
if (!uvs.empty())
{
if (!uvSetName.empty())
{
mPolySchema.setUVSourceName(uvSetName);
}
uvSamp.setScope( Alembic::AbcGeom::kFacevaryingScope );
uvSamp.setVals(Alembic::AbcGeom::V2fArraySample(
(const Imath::V2f *) &uvs.front(), uvs.size() / 2));
if (!indices.empty())
{
uvSamp.setIndices(Alembic::Abc::UInt32ArraySample(
&indices.front(), indices.size()));
}
}
}
Alembic::Abc::OCompoundProperty cp;
Alembic::Abc::OCompoundProperty up;
if (AttributesWriter::hasAnyAttr(lMesh, iArgs))
{
cp = mPolySchema.getArbGeomParams();
up = mPolySchema.getUserProperties();
}
// set the rest of the props and write to the writer node
mAttrs = AttributesWriterPtr(new AttributesWriter(cp, up, obj, lMesh,
iTimeIndex, iArgs));
writePoly(uvSamp);
}
if (mWriteColorSets)
{
MStringArray colorSetNames;
lMesh.getColorSetNames(colorSetNames);
if (colorSetNames.length() > 0)
{
// Create the color sets compound prop
Alembic::Abc::OCompoundProperty arbParams;
if (mPolySchema.valid())
{
arbParams = mPolySchema.getArbGeomParams();
}
else
{
arbParams = mSubDSchema.getArbGeomParams();
}
std::string currentColorSet = lMesh.currentColorSetName().asChar();
for (unsigned int i=0; i < colorSetNames.length(); ++i)
{
// Create an array property for each color set
std::string colorSetPropName = colorSetNames[i].asChar();
Alembic::AbcCoreAbstract::MetaData md;
if (currentColorSet == colorSetPropName)
{
md.set("mayaColorSet", "1");
}
else
{
md.set("mayaColorSet", "0");
}
if (lMesh.getColorRepresentation(colorSetNames[i]) ==
MFnMesh::kRGB)
{
Alembic::AbcGeom::OC3fGeomParam colorProp(arbParams,
colorSetPropName, true,
Alembic::AbcGeom::kFacevaryingScope, 1, iTimeIndex, md);
mRGBParams.push_back(colorProp);
}
else
{
Alembic::AbcGeom::OC4fGeomParam colorProp(arbParams,
colorSetPropName, true,
Alembic::AbcGeom::kFacevaryingScope, 1, iTimeIndex, md);
mRGBAParams.push_back(colorProp);
}
}
writeColor();
}
}
if (mWriteUVSets)
{
MStringArray uvSetNames;
lMesh.getUVSetNames(uvSetNames);
unsigned int uvSetNamesLen = uvSetNames.length();
if (uvSetNamesLen > 1)
{
// Create the uv sets compound prop
Alembic::Abc::OCompoundProperty arbParams;
if (mPolySchema.valid())
{
arbParams = mPolySchema.getArbGeomParams();
}
else
{
arbParams = mSubDSchema.getArbGeomParams();
}
MString currentUV = lMesh.currentUVSetName();
for (unsigned int i = 0; i < uvSetNamesLen; ++i)
{
// Create an array property for each uv set
MString uvSetPropName = uvSetNames[i];
// the current UV set gets mapped to the primary UVs
if (currentUV == uvSetPropName)
{
continue;
}
if (uvSetPropName.length() > 0 &&
lMesh.numUVs(uvSetPropName) > 0)
{
mUVparams.push_back(Alembic::AbcGeom::OV2fGeomParam(
arbParams, uvSetPropName.asChar(), true,
Alembic::AbcGeom::kFacevaryingScope, 1, iTimeIndex));
}
}
writeUVSets();
}
}
// write out facesets
if(!iArgs.writeFaceSets)
return;
// get the connected shading engines
MObjectArray connSGObjs (getOutConnectedSG(mDagPath));
const unsigned int sgCount = connSGObjs.length();
for (unsigned int i = 0; i < sgCount; ++i)
{
MObject connSGObj, compObj;
connSGObj = connSGObjs[i];
MFnDependencyNode fnDepNode(connSGObj);
MString connSgObjName = fnDepNode.name();
// retrive the component MObject
status = getSetComponents(mDagPath, connSGObj, gmMap, compObj);
if (status != MS::kSuccess)
{
// for some reason the shading group doesn't represent a face set
continue;
}
// retrieve the face indices
MIntArray indices;
MFnSingleIndexedComponent compFn;
compFn.setObject(compObj);
compFn.getElements(indices);
const unsigned int numData = indices.length();
// encountered the whole object mapping. skip it.
if (numData == 0)
continue;
std::vector<Alembic::Util::int32_t> faceIndices(numData);
for (unsigned int j = 0; j < numData; ++j)
{
faceIndices[j] = indices[j];
}
connSgObjName = util::stripNamespaces(connSgObjName,
iArgs.stripNamespace);
Alembic::AbcGeom::OFaceSet faceSet;
std::string faceSetName(connSgObjName.asChar());
MPlug abcFacesetNamePlug = fnDepNode.findPlug("AbcFacesetName", true);
if (!abcFacesetNamePlug.isNull())
{
faceSetName = abcFacesetNamePlug.asString().asChar();
}
if (mPolySchema.valid())
{
if (mPolySchema.hasFaceSet(faceSetName))
{
faceSet = mPolySchema.getFaceSet(faceSetName);
}
else
{
faceSet = mPolySchema.createFaceSet(faceSetName);
}
}
else
{
if (mSubDSchema.hasFaceSet(faceSetName))
{
faceSet = mSubDSchema.getFaceSet(faceSetName);
}
else
{
faceSet = mSubDSchema.createFaceSet(faceSetName);
}
}
Alembic::AbcGeom::OFaceSetSchema::Sample samp;
samp.setFaces(Alembic::Abc::Int32ArraySample(faceIndices));
Alembic::AbcGeom::OFaceSetSchema faceSetSchema = faceSet.getSchema();
faceSetSchema.set(samp);
faceSetSchema.setFaceExclusivity(Alembic::AbcGeom::kFaceSetExclusive);
MFnDependencyNode iNode(connSGObj);
Alembic::Abc::OCompoundProperty cp;
Alembic::Abc::OCompoundProperty up;
if (AttributesWriter::hasAnyAttr(iNode, iArgs))
{
cp = faceSetSchema.getArbGeomParams();
up = faceSetSchema.getUserProperties();
}
AttributesWriter attrWriter(cp, up, faceSet, iNode, iTimeIndex, iArgs);
attrWriter.write();
}
}
static void export_alembic_xform_by_buffer(AlembicArchive &archive, const RenderedBuffer & renderedBuffer, int renderedBufferIndex)
{
Alembic::AbcGeom::OObject topObj(*archive.archive, Alembic::AbcGeom::kTop);
Alembic::AbcGeom::OXform xform;
if (archive.xform_map.find(renderedBufferIndex) != archive.xform_map.end())
{
xform = archive.xform_map[renderedBufferIndex];
}
else
{
xform = Alembic::AbcGeom::OXform(topObj, "xform_" + umbase::UMStringUtil::number_to_string(renderedBufferIndex), archive.timesampling);
archive.xform_map[renderedBufferIndex] = xform;
}
bool isFirstMesh = false;
Alembic::AbcGeom::OPolyMesh polyMesh;
if (archive.mesh_map.find(renderedBufferIndex) != archive.mesh_map.end())
{
polyMesh = archive.mesh_map[renderedBufferIndex];
}
else
{
polyMesh = Alembic::AbcGeom::OPolyMesh(xform, "mesh_" + to_string(renderedBufferIndex), archive.timesampling);
archive.mesh_map[renderedBufferIndex] = polyMesh;
isFirstMesh = true;
Alembic::AbcGeom::OPolyMeshSchema &meshSchema = polyMesh.getSchema();
archive.schema_map[renderedBufferIndex] = meshSchema;
}
Alembic::AbcGeom::OPolyMeshSchema &meshSchema = archive.schema_map[renderedBufferIndex];
meshSchema.setTimeSampling(archive.timesampling);
std::vector<Alembic::Util::int32_t> faceList;
std::vector<Alembic::Util::int32_t> faceCountList;
const RenderedBuffer::UVList &uvList = renderedBuffer.uvs;
const RenderedBuffer::VertexList &vertexList = renderedBuffer.vertecies;
const RenderedBuffer::NormalList &normalList = renderedBuffer.normals;
RenderedBuffer::UVList& temporary_uv = archive.temporary_uv_list;
temporary_uv.resize(uvList.size());
RenderedBuffer::NormalList& temporary_normal = archive.temporary_normal_list;
temporary_normal.resize(normalList.size());
RenderedBuffer::VertexList& temporary_vertex = archive.temporary_vertex_list;
temporary_vertex.resize(vertexList.size());
const int materialSize = static_cast<int>(renderedBuffer.materials.size());
int totalFaceCount = 0;
for (int k = 0; k < materialSize; ++k)
{
RenderedMaterial* material = renderedBuffer.materials.at(k);
totalFaceCount += material->surface.faces.size();
}
if (archive.surface_size_map.find(renderedBufferIndex) == archive.surface_size_map.end())
{
archive.surface_size_map[renderedBufferIndex] = 0;
}
int& preSurfaceSize = archive.surface_size_map[renderedBufferIndex];
bool isFirstSurface = totalFaceCount != preSurfaceSize;
if (!isFirstMesh && isFirstSurface)
{
return;
}
preSurfaceSize = totalFaceCount;
faceCountList.resize(totalFaceCount);
faceList.resize(totalFaceCount * 3);
int faceCounter = 0;
for (int k = 0; k < materialSize; ++k)
{
RenderedMaterial* material = renderedBuffer.materials.at(k);
const int faceSize = material->surface.faces.size();
for (int n = 0; n < faceSize; ++n)
{
UMVec3i face = material->surface.faces[n];
faceList[faceCounter * 3 + 0] = (face.x - 1);
faceList[faceCounter * 3 + 1] = (face.y - 1);
faceList[faceCounter * 3 + 2] = (face.z - 1);
faceCountList[faceCounter] = 3;
++faceCounter;
}
}
Alembic::AbcGeom::OPolyMeshSchema::Sample sample;
// vertex
for (int n = 0, nsize = vertexList.size(); n < nsize; ++n)
{
temporary_vertex[n].z = -vertexList[n].z;
}
Alembic::AbcGeom::P3fArraySample positions( (const Imath::V3f *) &temporary_vertex.front(), temporary_vertex.size());
sample.setPositions(positions);
// face index
if (isFirstMesh)
{
Alembic::Abc::Int32ArraySample faceIndices(faceList);
Alembic::Abc::Int32ArraySample faceCounts(faceCountList);
sample.setFaceIndices(faceIndices);
sample.setFaceCounts(faceCounts);
}
// UVs
if (!uvList.empty() && archive.is_export_uvs)
{
for (int n = 0, nsize = uvList.size(); n < nsize; ++n)
{
temporary_uv[n].y = 1.0f - uvList[n].y;
}
Alembic::AbcGeom::OV2fGeomParam::Sample uvSample;
uvSample.setScope(Alembic::AbcGeom::kVertexScope );
uvSample.setVals(Alembic::AbcGeom::V2fArraySample( ( const Imath::V2f *) &temporary_uv.front(), temporary_uv.size()));
sample.setUVs(uvSample);
}
// Normals
if (!normalList.empty() && archive.is_export_normals)
{
for (int n = 0, nsize = normalList.size(); n < nsize; ++n)
{
temporary_normal[n].z = -normalList[n].z;
}
Alembic::AbcGeom::ON3fGeomParam::Sample normalSample;
normalSample.setScope(Alembic::AbcGeom::kVertexScope );
normalSample.setVals(Alembic::AbcGeom::N3fArraySample( (const Alembic::AbcGeom::N3f *) &temporary_normal.front(), temporary_normal.size()));
sample.setNormals(normalSample);
}
meshSchema.set(sample);
}
static void export_alembic_xform_by_material_direct(AlembicArchive &archive, const RenderedBuffer & renderedBuffer, int renderedBufferIndex)
{
Alembic::AbcGeom::OObject topObj(*archive.archive, Alembic::AbcGeom::kTop);
for (int k = 0, ksize = static_cast<int>(renderedBuffer.materials.size()); k < ksize; ++k)
{
Alembic::AbcGeom::OPolyMesh polyMesh;
const int key = renderedBufferIndex * 10000 + k;
Alembic::AbcGeom::OXform xform;
if (archive.xform_map.find(key) != archive.xform_map.end())
{
xform = archive.xform_map[key];
}
else
{
xform = Alembic::AbcGeom::OXform(topObj, "xform_" + to_string(renderedBufferIndex) + "_material_" + to_string(k) , archive.timesampling);
archive.xform_map[key] = xform;
}
bool isFirstMesh = false;
if (archive.mesh_map.find(key) != archive.mesh_map.end())
{
polyMesh = archive.mesh_map[key];
}
else
{
polyMesh = Alembic::AbcGeom::OPolyMesh(xform, "mesh_" + to_string(renderedBufferIndex) + "_material_" + to_string(k), archive.timesampling);
archive.mesh_map[key] = polyMesh;
isFirstMesh = true;
Alembic::AbcGeom::OPolyMeshSchema &meshSchema = polyMesh.getSchema();
archive.schema_map[key] = meshSchema;
}
if (archive.surface_size_map.find(key) == archive.surface_size_map.end())
{
archive.surface_size_map[key] = 0;
}
Alembic::AbcGeom::OPolyMeshSchema &meshSchema = archive.schema_map[key];
meshSchema.setTimeSampling(archive.timesampling);
Alembic::AbcGeom::OPolyMeshSchema::Sample empty;
std::vector<Alembic::Util::int32_t> faceList;
std::vector<Alembic::Util::int32_t> faceCountList;
const RenderedBuffer::UVList &uvList = renderedBuffer.uvs;
const RenderedBuffer::VertexList &vertexList = renderedBuffer.vertecies;
const RenderedBuffer::NormalList &normalList = renderedBuffer.normals;
RenderedBuffer::VertexList vertexListByMaterial;
RenderedBuffer::UVList uvListByMaterial;
RenderedBuffer::NormalList normalListByMaterial;
RenderedMaterial* material = renderedBuffer.materials.at(k);
const int materialSurfaceSize = static_cast<int>(material->surface.faces.size());
vertexListByMaterial.resize(materialSurfaceSize * 3);
faceList.resize(materialSurfaceSize * 3);
faceCountList.resize(materialSurfaceSize);
if (!uvList.empty())
{
uvListByMaterial.resize(materialSurfaceSize * 3);
}
if (!normalList.empty())
{
normalListByMaterial.resize(materialSurfaceSize * 3);
}
int& preSurfaceSize = archive.surface_size_map[key];
bool isFirstSurface = material->surface.faces.size() != preSurfaceSize;
if (!isFirstMesh && isFirstSurface)
{
continue;
}
// re assign par material
int lastIndex = 0;
for (int n = 0; n < materialSurfaceSize; ++n)
{
UMVec3i face = material->surface.faces[n];
const int f1 = face.x - 1;
const int f2 = face.y - 1;
const int f3 = face.z - 1;
int vi1 = n * 3 + 0;
int vi2 = n * 3 + 1;
int vi3 = n * 3 + 2;
vertexListByMaterial[vi1] = vertexList.at(f1);
vertexListByMaterial[vi2] = vertexList.at(f2);
vertexListByMaterial[vi3] = vertexList.at(f3);
if (!uvList.empty() && archive.is_export_uvs)
{
uvListByMaterial[vi1] = uvList.at(f1);
uvListByMaterial[vi2] = uvList.at(f2);
uvListByMaterial[vi3] = uvList.at(f3);
}
if (!normalList.empty() && archive.is_export_normals)
{
normalListByMaterial[vi1] = normalList.at(f1);
normalListByMaterial[vi2] = normalList.at(f2);
normalListByMaterial[vi3] = normalList.at(f3);
}
faceList[vi1] = vi1;
faceList[vi2] = vi2;
faceList[vi3] = vi3;
faceCountList[n] = 3;
}
preSurfaceSize = material->surface.faces.size();
for (int n = 0, nsize = vertexListByMaterial.size(); n < nsize; ++n)
{
vertexListByMaterial[n].z = -vertexListByMaterial[n].z;
}
Alembic::AbcGeom::OPolyMeshSchema::Sample sample;
// vertex
Alembic::AbcGeom::P3fArraySample positions( (const Imath::V3f *) &vertexListByMaterial.front(), vertexListByMaterial.size());
sample.setPositions(positions);
// face index
if (isFirstMesh)
{
Alembic::Abc::Int32ArraySample faceIndices(faceList);
Alembic::Abc::Int32ArraySample faceCounts(faceCountList);
sample.setFaceIndices(faceIndices);
sample.setFaceCounts(faceCounts);
}
// UVs
if (!uvListByMaterial.empty() && archive.is_export_uvs)
{
for (int n = 0, nsize = uvListByMaterial.size(); n < nsize; ++n)
{
uvListByMaterial[n].y = 1.0f - uvListByMaterial[n].y;
}
Alembic::AbcGeom::OV2fGeomParam::Sample uvSample;
uvSample.setScope(Alembic::AbcGeom::kVertexScope );
uvSample.setVals(Alembic::AbcGeom::V2fArraySample( ( const Imath::V2f *) &uvListByMaterial.front(), uvListByMaterial.size()));
sample.setUVs(uvSample);
}
// Normals
if (!normalListByMaterial.empty() && archive.is_export_normals)
{
for (int n = 0, nsize = normalListByMaterial.size(); n < nsize; ++n)
{
normalListByMaterial[n].z = -normalListByMaterial[n].z;
}
Alembic::AbcGeom::ON3fGeomParam::Sample normalSample;
normalSample.setScope(Alembic::AbcGeom::kVertexScope );
normalSample.setVals(Alembic::AbcGeom::N3fArraySample( (const Alembic::AbcGeom::N3f *) &normalListByMaterial.front(), normalListByMaterial.size()));
sample.setNormals(normalSample);
}
meshSchema.set(sample);
}
}