void IECoreArnold::RendererImplementation::procedural( IECore::Renderer::ProceduralPtr proc )
{
Box3f bound = proc->bound();
if( bound.isEmpty() )
{
return;
}
AtNode *procedural = AiNode( "procedural" );
if( ExternalProcedural *externalProc = dynamic_cast<ExternalProcedural *>( proc.get() ) )
{
AiNodeSetStr( procedural, "dso", externalProc->fileName().c_str() );
ParameterAlgo::setParameters( procedural, externalProc->parameters() );
applyTransformToNode( procedural );
}
else
{
// we have to transform the bound, as we're not applying the current transform to the
// procedural node, but instead applying absolute transforms to the shapes the procedural
// generates.
if( bound != Procedural::noBound )
{
Box3f transformedBound;
for( size_t i = 0, e = m_transformStack.numSamples(); i < e; ++i )
{
transformedBound.extendBy( transform( bound, m_transformStack.sample( i ) ) );
}
bound = transformedBound;
}
AiNodeSetPtr( procedural, "funcptr", (void *)procLoader );
ProceduralData *data = new ProceduralData;
data->procedural = proc;
data->renderer = new IECoreArnold::Renderer( new RendererImplementation( *this ) );
AiNodeSetPtr( procedural, "userptr", data );
}
if( bound != Procedural::noBound )
{
AiNodeSetPnt( procedural, "min", bound.min.x, bound.min.y, bound.min.z );
AiNodeSetPnt( procedural, "max", bound.max.x, bound.max.y, bound.max.z );
}
else
{
// No bound available - expand procedural immediately.
AiNodeSetBool( procedural, "load_at_init", true );
}
// we call addNode() rather than addShape() as we don't want to apply transforms and
// shaders and attributes to procedurals. if we do, they override the things we set
// on the nodes generated by the procedurals, which is frankly useless.
addNode( procedural );
}
void IECoreArnold::RendererImplementation::procedural( IECore::Renderer::ProceduralPtr proc )
{
Box3f bound = proc->bound();
if( bound.isEmpty() )
{
return;
}
AtNode *node = NULL;
std::string nodeType = "procedural";
if( const ExternalProcedural *externalProc = dynamic_cast<ExternalProcedural *>( proc.get() ) )
{
// Allow a parameter "ai:nodeType" == "volume" to create a volume shape rather
// than a procedural shape. Volume shapes provide "dso", "min" and "max" parameters
// just as procedural shapes do, so the mapping is a fairly natural one.
CompoundDataMap::const_iterator nodeTypeIt = externalProc->parameters().find( "ai:nodeType" );
if( nodeTypeIt != externalProc->parameters().end() && nodeTypeIt->second->isInstanceOf( StringData::staticTypeId() ) )
{
nodeType = static_cast<const StringData *>( nodeTypeIt->second.get() )->readable();
}
node = AiNode( nodeType.c_str() );
AiNodeSetStr( node, "dso", externalProc->fileName().c_str() );
ParameterAlgo::setParameters( node, externalProc->parameters() );
applyTransformToNode( node );
}
else
{
node = AiNode( nodeType.c_str() );
// we have to transform the bound, as we're not applying the current transform to the
// procedural node, but instead applying absolute transforms to the shapes the procedural
// generates.
if( bound != Procedural::noBound )
{
Box3f transformedBound;
for( size_t i = 0, e = m_transformStack.numSamples(); i < e; ++i )
{
transformedBound.extendBy( transform( bound, m_transformStack.sample( i ) ) );
}
bound = transformedBound;
}
AiNodeSetPtr( node, "funcptr", (void *)procLoader );
ProceduralData *data = new ProceduralData;
data->procedural = proc;
data->renderer = new IECoreArnold::Renderer( new RendererImplementation( *this ) );
AiNodeSetPtr( node, "userptr", data );
}
if( bound != Procedural::noBound )
{
AiNodeSetPnt( node, "min", bound.min.x, bound.min.y, bound.min.z );
AiNodeSetPnt( node, "max", bound.max.x, bound.max.y, bound.max.z );
}
else
{
// No bound available - expand procedural immediately.
AiNodeSetBool( node, "load_at_init", true );
}
if( nodeType == "procedural" )
{
// We call addNode() rather than addShape() as we don't want to apply transforms and
// shaders and attributes to procedurals. If we do, they override the things we set
// on the nodes generated by the procedurals, which is frankly useless.
addNode( node );
}
else
{
addShape( node );
}
}