FromHoudiniGeometryConverter::Convertability FromHoudiniCurvesConverter::canConvert( const GU_Detail *geo )
{
const GA_PrimitiveList &primitives = geo->getPrimitiveList();
unsigned numPrims = geo->getNumPrimitives();
GA_Iterator firstPrim = geo->getPrimitiveRange().begin();
if ( !numPrims || !compatiblePrimitive( primitives.get( firstPrim.getOffset() )->getTypeId() ) )
{
return Inapplicable;
}
const GEO_Curve *firstCurve = (const GEO_Curve*)primitives.get( firstPrim.getOffset() );
bool periodic = firstCurve->isClosed();
unsigned order = firstCurve->getOrder();
for ( GA_Iterator it=firstPrim; !it.atEnd(); ++it )
{
const GA_Primitive *prim = primitives.get( it.getOffset() );
if ( !compatiblePrimitive( prim->getTypeId() ) )
{
return Inapplicable;
}
const GEO_Curve *curve = (const GEO_Curve*)prim;
if ( curve->getOrder() != order )
{
return Inapplicable;
}
if ( curve->isClosed() != periodic )
{
return Inapplicable;
}
}
// is there a single named shape?
GA_ROAttributeRef attrRef = geo->findPrimitiveAttribute( "name" );
if ( attrRef.isValid() && attrRef.isString() )
{
const GA_Attribute *nameAttr = attrRef.getAttribute();
const GA_AIFSharedStringTuple *tuple = nameAttr->getAIFSharedStringTuple();
GA_StringTableStatistics stats;
tuple->getStatistics( nameAttr, stats );
if ( stats.getEntries() < 2 )
{
return Ideal;
}
}
return Suitable;
}
ObjectPtr FromHoudiniGroupConverter::doConversion( ConstCompoundObjectPtr operands ) const
{
GU_DetailHandleAutoReadLock readHandle( handle() );
const GU_Detail *geo = readHandle.getGdp();
if ( !geo )
{
return 0;
}
size_t numResultPrims = 0;
size_t numOrigPrims = geo->getNumPrimitives();
GroupPtr result = new Group();
if ( operands->member<const IntData>( "groupingMode" )->readable() == NameAttribute )
{
GA_ROAttributeRef attributeRef = geo->findPrimitiveAttribute( "name" );
if ( attributeRef.isInvalid() || !attributeRef.isString() )
{
GU_Detail ungroupedGeo( (GU_Detail*)geo );
GA_PrimitiveGroup *ungrouped = static_cast<GA_PrimitiveGroup*>( ungroupedGeo.createInternalElementGroup( GA_ATTRIB_PRIMITIVE, "FromHoudiniGroupConverter__ungroupedPrimitives" ) );
ungrouped->toggleRange( ungroupedGeo.getPrimitiveRange() );
VisibleRenderablePtr renderable = 0;
doGroupConversion( &ungroupedGeo, ungrouped, renderable, operands );
if ( renderable )
{
Group *group = runTimeCast<Group>( renderable );
if ( group )
{
const Group::ChildContainer &children = group->children();
for ( Group::ChildContainer::const_iterator it = children.begin(); it != children.end(); ++it )
{
result->addChild( *it );
}
}
else
{
result->addChild( renderable );
}
}
return result;
}
GU_Detail groupGeo( (GU_Detail*)geo );
AttributePrimIdGroupMap groupMap;
regroup( &groupGeo, groupMap, attributeRef );
for ( AttributePrimIdGroupMapIterator it=groupMap.begin(); it != groupMap.end(); ++it )
{
convertAndAddPrimitive( &groupGeo, it->second, result, operands, it->first.first );
}
}
else
{
for ( GA_GroupTable::iterator<GA_ElementGroup> it=geo->primitiveGroups().beginTraverse(); !it.atEnd(); ++it )
{
GA_PrimitiveGroup *group = static_cast<GA_PrimitiveGroup*>( it.group() );
if ( group->getInternal() || group->isEmpty() )
{
continue;
}
VisibleRenderablePtr renderable = 0;
numResultPrims += doGroupConversion( geo, group, renderable, operands );
if( !renderable )
{
continue;
}
renderable->blindData()->member<StringData>( "name", false, true )->writable() = group->getName().toStdString();
result->addChild( renderable );
}
if ( numOrigPrims == numResultPrims )
{
return result;
}
GU_Detail ungroupedGeo( (GU_Detail*)geo );
GA_PrimitiveGroup *ungrouped = static_cast<GA_PrimitiveGroup*>( ungroupedGeo.createInternalElementGroup( GA_ATTRIB_PRIMITIVE, "FromHoudiniGroupConverter__ungroupedPrimitives" ) );
for ( GA_GroupTable::iterator<GA_ElementGroup> it=geo->primitiveGroups().beginTraverse(); !it.atEnd(); ++it )
{
*ungrouped |= *static_cast<GA_PrimitiveGroup*>( it.group() );
}
ungrouped->toggleRange( ungroupedGeo.getPrimitiveRange() );
if ( ungrouped->isEmpty() )
{
return result;
}
VisibleRenderablePtr renderable = 0;
doGroupConversion( &ungroupedGeo, ungrouped, renderable, operands );
if ( renderable )
{
result->addChild( renderable );
}
}
return result;
}
FromHoudiniGeometryConverter::Convertability FromHoudiniGroupConverter::canConvert( const GU_Detail *geo )
{
const GA_PrimitiveList &primitives = geo->getPrimitiveList();
// are there multiple primitives?
unsigned numPrims = geo->getNumPrimitives();
if ( numPrims < 2 )
{
return Admissible;
}
// are there mixed primitive types?
GA_Iterator firstPrim = geo->getPrimitiveRange().begin();
GA_PrimitiveTypeId firstPrimId = primitives.get( firstPrim.getOffset() )->getTypeId();
for ( GA_Iterator it=firstPrim; !it.atEnd(); ++it )
{
if ( primitives.get( it.getOffset() )->getTypeId() != firstPrimId )
{
return Ideal;
}
}
// are there multiple named shapes?
GA_ROAttributeRef attrRef = geo->findPrimitiveAttribute( "name" );
if ( attrRef.isValid() && attrRef.isString() )
{
const GA_Attribute *nameAttr = attrRef.getAttribute();
const GA_AIFSharedStringTuple *tuple = nameAttr->getAIFSharedStringTuple();
if ( tuple->getTableEntries( nameAttr ) > 1 )
{
return Ideal;
}
}
// are the primitives split into groups?
UT_PtrArray<const GA_ElementGroup*> primGroups;
geo->getElementGroupList( GA_ATTRIB_PRIMITIVE, primGroups );
if ( primGroups.isEmpty() )
{
return Admissible;
}
bool externalGroups = false;
for ( unsigned i=0; i < primGroups.entries(); ++i )
{
const GA_ElementGroup *group = primGroups[i];
if ( group->getInternal() )
{
continue;
}
if ( group->entries() == numPrims )
{
return Admissible;
}
externalGroups = true;
}
if ( externalGroups )
{
return Ideal;
}
return Admissible;
}