//-*****************************************************************************
void ProcessCurves( ICurves &curves, ProcArgs &args )
{
ICurvesSchema &cs = curves.getSchema();
TimeSamplingPtr ts = cs.getTimeSampling();
SampleTimeSet sampleTimes;
GetRelevantSampleTimes( args, ts, cs.getNumSamples(), sampleTimes );
bool multiSample = sampleTimes.size() > 1;
bool firstSample = true;
for ( SampleTimeSet::iterator iter = sampleTimes.begin();
iter != sampleTimes.end(); ++iter )
{
ISampleSelector sampleSelector( *iter );
ICurvesSchema::Sample sample = cs.getValue( sampleSelector );
//need to set the basis prior to the MotionBegin block
if ( firstSample )
{
firstSample = false;
BasisType basisType = sample.getBasis();
if ( basisType != kNoBasis )
{
RtBasis * basis = NULL;
RtInt step = 0;
switch ( basisType )
{
case kBezierBasis:
basis = &RiBezierBasis;
step = RI_BEZIERSTEP;
break;
case kBsplineBasis:
basis = &RiBSplineBasis;
step = RI_BSPLINESTEP;
break;
case kCatmullromBasis:
basis = &RiCatmullRomBasis;
step = RI_CATMULLROMSTEP;
break;
case kHermiteBasis:
basis = &RiHermiteBasis;
step = RI_HERMITESTEP;
break;
case kPowerBasis:
basis = &RiPowerBasis;
step = RI_POWERSTEP;
break;
default:
break;
}
if ( basis != NULL )
{
RiBasis( *basis, step, *basis, step);
}
}
if ( multiSample ) { WriteMotionBegin( args, sampleTimes ); }
}
ParamListBuilder paramListBuilder;
paramListBuilder.add( "P", (RtPointer)sample.getPositions()->get() );
IFloatGeomParam widthParam = cs.getWidthsParam();
if ( widthParam.valid() )
{
ICompoundProperty parent = widthParam.getParent();
//prman requires "width" to be named "constantwidth" when
//constant instead of declared as "constant float width".
//It's even got an error message specifically for it.
std::string widthName;
if ( widthParam.getScope() == kConstantScope ||
widthParam.getScope() == kUnknownScope )
{
widthName = "constantwidth";
}
else
{
widthName = "width";
}
AddGeomParamToParamListBuilder<IFloatGeomParam>(
parent,
widthParam.getHeader(),
sampleSelector,
"float",
paramListBuilder,
1,
widthName);
}
IN3fGeomParam nParam = cs.getNormalsParam();
if ( nParam.valid() )
{
ICompoundProperty parent = nParam.getParent();
AddGeomParamToParamListBuilder<IN3fGeomParam>(
parent,
nParam.getHeader(),
sampleSelector,
"normal",
paramListBuilder);
}
IV2fGeomParam uvParam = cs.getUVsParam();
if ( uvParam.valid() )
{
ICompoundProperty parent = uvParam.getParent();
AddGeomParamToParamListBuilder<IV2fGeomParam>(
parent,
uvParam.getHeader(),
sampleSelector,
"float",
paramListBuilder,
2,
"st");
}
ICompoundProperty arbGeomParams = cs.getArbGeomParams();
AddArbitraryGeomParams( arbGeomParams,
sampleSelector, paramListBuilder );
RtToken curveType;
switch ( sample.getType() )
{
case kCubic:
curveType = const_cast<RtToken>( "cubic" );
break;
default:
curveType = const_cast<RtToken>( "linear" );
}
RtToken wrap;
switch ( sample.getWrap() )
{
case kPeriodic:
wrap = const_cast<RtToken>( "periodic" );
break;
default:
wrap = const_cast<RtToken>( "nonperiodic" );
}
RiCurvesV(curveType,
sample.getNumCurves(),
(RtInt*) sample.getCurvesNumVertices()->get(),
wrap,
paramListBuilder.n(),
paramListBuilder.nms(),
paramListBuilder.vals() );
}
if ( multiSample ) { RiMotionEnd(); }
}
//-*****************************************************************************
void ProcessPolyMesh( IPolyMesh &polymesh, ProcArgs &args )
{
IPolyMeshSchema &ps = polymesh.getSchema();
TimeSamplingPtr ts = ps.getTimeSampling();
SampleTimeSet sampleTimes;
GetRelevantSampleTimes( args, ts, ps.getNumSamples(), sampleTimes );
bool multiSample = sampleTimes.size() > 1;
if ( multiSample ) { WriteMotionBegin( args, sampleTimes ); }
for ( SampleTimeSet::iterator iter = sampleTimes.begin();
iter != sampleTimes.end(); ++ iter )
{
ISampleSelector sampleSelector( *iter );
IPolyMeshSchema::Sample sample = ps.getValue( sampleSelector );
RtInt npolys = (RtInt) sample.getFaceCounts()->size();
ParamListBuilder paramListBuilder;
paramListBuilder.add( "P", (RtPointer)sample.getPositions()->get() );
IV2fGeomParam uvParam = ps.getUVsParam();
if ( uvParam.valid() )
{
ICompoundProperty parent = uvParam.getParent();
if ( !args.flipv )
{
AddGeomParamToParamListBuilder<IV2fGeomParam>(
parent,
uvParam.getHeader(),
sampleSelector,
"float",
paramListBuilder,
2,
"st");
}
else if ( std::vector<float> * values =
AddGeomParamToParamListBuilderAsFloat<IV2fGeomParam, float>(
parent,
uvParam.getHeader(),
sampleSelector,
"float",
paramListBuilder,
"st") )
{
for ( size_t i = 1, e = values->size(); i < e; i += 2 )
{
(*values)[i] = 1.0 - (*values)[i];
}
}
}
IN3fGeomParam nParam = ps.getNormalsParam();
if ( nParam.valid() )
{
ICompoundProperty parent = nParam.getParent();
AddGeomParamToParamListBuilder<IN3fGeomParam>(
parent,
nParam.getHeader(),
sampleSelector,
"normal",
paramListBuilder);
}
ICompoundProperty arbGeomParams = ps.getArbGeomParams();
AddArbitraryGeomParams( arbGeomParams,
sampleSelector, paramListBuilder );
RiPointsPolygonsV(
npolys,
(RtInt*) sample.getFaceCounts()->get(),
(RtInt*) sample.getFaceIndices()->get(),
paramListBuilder.n(),
paramListBuilder.nms(),
paramListBuilder.vals() );
}
if (multiSample) RiMotionEnd();
}
//-*****************************************************************************
void ProcessSubD( ISubD &subd, ProcArgs &args, const std::string & facesetName )
{
ISubDSchema &ss = subd.getSchema();
TimeSamplingPtr ts = ss.getTimeSampling();
SampleTimeSet sampleTimes;
GetRelevantSampleTimes( args, ts, ss.getNumSamples(), sampleTimes );
bool multiSample = sampleTimes.size() > 1;
//include this code path for future expansion
bool isHierarchicalSubD = false;
bool hasLocalResources = false;
std::vector<IFaceSet> faceSets;
std::vector<std::string> faceSetResourceNames;
if ( facesetName.empty() )
{
std::vector <std::string> childFaceSetNames;
ss.getFaceSetNames(childFaceSetNames);
faceSets.reserve(childFaceSetNames.size());
faceSetResourceNames.reserve(childFaceSetNames.size());
for (size_t i = 0; i < childFaceSetNames.size(); ++i)
{
faceSets.push_back(ss.getFaceSet(childFaceSetNames[i]));
IFaceSet & faceSet = faceSets.back();
std::string resourceName = args.getResource(
faceSet.getFullName() );
if ( resourceName.empty() )
{
resourceName = args.getResource( faceSet.getName() );
}
#ifdef PRMAN_USE_ABCMATERIAL
Mat::MaterialFlatten mafla(faceSet);
if (!mafla.empty())
{
if (!hasLocalResources)
{
RiResourceBegin();
hasLocalResources = true;
}
RiAttributeBegin();
if ( !resourceName.empty() )
{
//restore existing resource state here
RestoreResource( resourceName );
}
WriteMaterial( mafla, args );
resourceName = faceSet.getFullName();
SaveResource( resourceName );
RiAttributeEnd();
}
#endif
faceSetResourceNames.push_back(resourceName);
}
}
#ifdef PRMAN_USE_ABCMATERIAL
else
{
//handle single faceset material directly
if ( ss.hasFaceSet( facesetName ) )
{
IFaceSet faceSet = ss.getFaceSet( facesetName );
ApplyObjectMaterial(faceSet, args);
}
}
#endif
if ( multiSample ) { WriteMotionBegin( args, sampleTimes ); }
for ( SampleTimeSet::iterator iter = sampleTimes.begin();
iter != sampleTimes.end(); ++iter )
{
ISampleSelector sampleSelector( *iter );
ISubDSchema::Sample sample = ss.getValue( sampleSelector );
RtInt npolys = (RtInt) sample.getFaceCounts()->size();
ParamListBuilder paramListBuilder;
paramListBuilder.add( "P", (RtPointer)sample.getPositions()->get() );
IV2fGeomParam uvParam = ss.getUVsParam();
if ( uvParam.valid() )
{
ICompoundProperty parent = uvParam.getParent();
if ( !args.flipv )
{
AddGeomParamToParamListBuilder<IV2fGeomParam>(
parent,
uvParam.getHeader(),
sampleSelector,
"float",
paramListBuilder,
2,
"st");
}
else if ( std::vector<float> * values =
AddGeomParamToParamListBuilderAsFloat<IV2fGeomParam, float>(
parent,
uvParam.getHeader(),
sampleSelector,
"float",
paramListBuilder,
"st") )
{
for ( size_t i = 1, e = values->size(); i < e; i += 2 )
{
(*values)[i] = 1.0 - (*values)[i];
}
}
}
ICompoundProperty arbGeomParams = ss.getArbGeomParams();
AddArbitraryGeomParams( arbGeomParams,
sampleSelector, paramListBuilder );
std::string subdScheme = sample.getSubdivisionScheme();
SubDTagBuilder tags;
ProcessFacevaryingInterpolateBoundry( tags, sample );
ProcessInterpolateBoundry( tags, sample );
ProcessFacevaryingPropagateCorners( tags, sample );
ProcessHoles( tags, sample );
ProcessCreases( tags, sample );
ProcessCorners( tags, sample );
if ( !facesetName.empty() )
{
if ( ss.hasFaceSet( facesetName ) )
{
IFaceSet faceSet = ss.getFaceSet( facesetName );
ApplyResources( faceSet, args );
// TODO, move the hold test outside of MotionBegin
// as it's not meaningful to change per sample
IFaceSetSchema::Sample faceSetSample =
faceSet.getSchema().getValue( sampleSelector );
std::set<int> facesToKeep;
facesToKeep.insert( faceSetSample.getFaces()->get(),
faceSetSample.getFaces()->get() +
faceSetSample.getFaces()->size() );
for ( int i = 0; i < npolys; ++i )
{
if ( facesToKeep.find( i ) == facesToKeep.end() )
{
tags.add( "hole" );
tags.addIntArg( i );
}
}
}
}
else
{
//loop through the facesets and determine whether there are any
//resources assigned to each
for (size_t i = 0; i < faceSetResourceNames.size(); ++i)
{
const std::string & resourceName = faceSetResourceNames[i];
//TODO, visibility?
if ( !resourceName.empty() )
{
IFaceSet & faceSet = faceSets[i];
isHierarchicalSubD = true;
tags.add("faceedit");
Int32ArraySamplePtr faces = faceSet.getSchema().getValue(
sampleSelector ).getFaces();
for (size_t j = 0, e = faces->size(); j < e; ++j)
{
tags.addIntArg(1); //yep, every face gets a 1 in front of it too
tags.addIntArg( (int) faces->get()[j]);
}
tags.addStringArg( "attributes" );
tags.addStringArg( resourceName );
tags.addStringArg( "shading" );
}
}
}
if ( isHierarchicalSubD )
{
RiHierarchicalSubdivisionMeshV(
const_cast<RtToken>( subdScheme.c_str() ),
npolys,
(RtInt*) sample.getFaceCounts()->get(),
(RtInt*) sample.getFaceIndices()->get(),
tags.nt(),
tags.tags(),
tags.nargs( true ),
tags.intargs(),
tags.floatargs(),
tags.stringargs(),
paramListBuilder.n(),
paramListBuilder.nms(),
paramListBuilder.vals()
);
}
else
{
RiSubdivisionMeshV(
const_cast<RtToken>(subdScheme.c_str() ),
npolys,
(RtInt*) sample.getFaceCounts()->get(),
(RtInt*) sample.getFaceIndices()->get(),
tags.nt(),
tags.tags(),
tags.nargs( false ),
tags.intargs(),
tags.floatargs(),
paramListBuilder.n(),
paramListBuilder.nms(),
paramListBuilder.vals()
);
}
}
if ( multiSample ) { RiMotionEnd(); }
if ( hasLocalResources ) { RiResourceEnd(); }
}
//-*****************************************************************************
void Example1_MeshIn()
{
IArchive archive( Alembic::AbcCoreOgawa::ReadArchive(), "polyMesh1.abc" );
std::cout << "Reading: " << archive.getName() << std::endl;
IGeomBaseObject geomBase( IObject( archive, kTop ), "meshy" );
TESTING_ASSERT( geomBase.getSchema().getSelfBoundsProperty().valid() );
IPolyMesh meshyObj( IObject( archive, kTop ), "meshy" );
IPolyMeshSchema &mesh = meshyObj.getSchema();
IN3fGeomParam N = mesh.getNormalsParam();
IV2fGeomParam uv = mesh.getUVsParam();
TESTING_ASSERT( ! N.isIndexed() );
TESTING_ASSERT( ! uv.isIndexed() );
IPolyMeshSchema::Sample mesh_samp;
mesh.get( mesh_samp );
IGeomBase::Sample baseSamp;
geomBase.getSchema().get( baseSamp );
TESTING_ASSERT( mesh_samp.getSelfBounds().min == V3d( -1.0, -1.0, -1.0 ) );
TESTING_ASSERT( mesh_samp.getSelfBounds().max == V3d( 1.0, 1.0, 1.0 ) );
TESTING_ASSERT( baseSamp.getSelfBounds().min == V3d( -1.0, -1.0, -1.0 ) );
TESTING_ASSERT( baseSamp.getSelfBounds().max == V3d( 1.0, 1.0, 1.0 ) );
ICompoundProperty arbattrs = mesh.getArbGeomParams();
// we didn't set any on write, so on read, it should be an invalid container
TESTING_ASSERT( ! arbattrs );
// getExpandedValue() takes an optional ISampleSelector;
// getVals() returns a TypedArraySamplePtr
N3fArraySamplePtr nsp = N.getExpandedValue().getVals();
TESTING_ASSERT( N.isConstant() );
TESTING_ASSERT( uv.isConstant() );
TESTING_ASSERT( IsGeomParam( N.getHeader() ) );
TESTING_ASSERT( GetSourceName( uv.getMetaData() ) == "test" );
TESTING_ASSERT( isUV( uv.getHeader() ) );
N3f n0 = (*nsp)[0];
for ( size_t i = 0 ; i < nsp->size() ; ++i )
{
std::cout << i << "th normal: " << (*nsp)[i] << std::endl;
}
TESTING_ASSERT( n0 == N3f( -1.0f, 0.0f, 0.0f ) );
std::cout << "0th normal: " << n0 << std::endl;
IV2fGeomParam::Sample uvsamp;
TESTING_ASSERT( !uvsamp.valid() );
uvsamp = uv.getIndexedValue();
TESTING_ASSERT( uvsamp.valid() );
TESTING_ASSERT( (*(uvsamp.getIndices()))[1] == 1 );
V2f uv2 = (*(uvsamp.getVals()))[2];
TESTING_ASSERT( uv2 == V2f( 1.0f, 1.0f ) );
std::cout << "2th UV: " << uv2 << std::endl;
std::cout << "Mesh num vertices: "
<< mesh_samp.getPositions()->size() << std::endl;
std::cout << "0th vertex from the mesh sample: "
<< (*(mesh_samp.getPositions()))[0] << std::endl;
std::cout << "0th vertex from the mesh sample with get method: "
<< mesh_samp.getPositions()->get()[0] << std::endl;
}
