Imath::Box3f Instancer::computeBranchBound( const ScenePath &parentPath, const ScenePath &branchPath, const Gaffer::Context *context ) const
{
if( branchPath.size() <= 1 )
{
// "/" or "/name"
Box3f result;
ConstV3fVectorDataPtr p = sourcePoints( parentPath );
if( p )
{
ScenePath branchChildPath( branchPath );
if( branchChildPath.size() == 0 )
{
branchChildPath.push_back( namePlug()->getValue() );
}
BoundUnion unioner( this, branchChildPath, context, p.get() );
parallel_reduce(
blocked_range<size_t>( 0, p->readable().size() ),
unioner
);
result = unioner.result();
}
return result;
}
else
{
InstanceScope instanceScope( context, branchPath );
return instancePlug()->boundPlug()->getValue();
}
}
Imath::M44f Instancer::computeBranchTransform( const ScenePath &parentPath, const ScenePath &branchPath, const Gaffer::Context *context ) const
{
if( branchPath.size() < 2 )
{
// "/" or "/name"
return M44f();
}
else if( branchPath.size() == 2 )
{
// "/name/instanceNumber"
int index = instanceIndex( branchPath );
ConstV3fVectorDataPtr p = sourcePoints( parentPath );
return instanceTransform( p.get(), index );
}
else
{
InstanceScope instanceScope( context, branchPath );
return instancePlug()->transformPlug()->getValue();
}
}
