public void GenerateGeometry(HEU_SessionBase session, bool bRebuild)
{
// Volumes could come in as a geonode + part for each heightfield layer.
// Otherwise the other geo types can be done individually.
bool bResult = false;
List<HEU_PartData> meshParts = new List<HEU_PartData>();
List<HEU_PartData> volumeParts = new List<HEU_PartData>();
List<HEU_PartData> partsToDestroy = new List<HEU_PartData>();
HEU_HoudiniAsset parentAsset = ParentAsset;
foreach (HEU_GeoNode geoNode in _geoNodes)
{
geoNode.GetPartsByOutputType(meshParts, volumeParts);
if (volumeParts.Count > 0)
{
// Volumes
// Each layer in the volume is retrieved as a volume part, in the display geo node.
// But we need to handle all layers as 1 terrain output in Unity, with 1 height layer and
// other layers as alphamaps.
geoNode.ProcessVolumeParts(session, volumeParts, bRebuild);
// Clear the volume parts after processing since we are done with this set
volumeParts.Clear();
}
}
// Meshes
foreach (HEU_PartData part in meshParts)
{
// This returns false when there is no valid geometry or is not instancing. Should remove it as otherwise
// stale data sticks around on recook
bResult = part.GenerateMesh(session, parentAsset.GenerateUVs, parentAsset.GenerateTangents, parentAsset.GenerateNormals, parentAsset.UseLODGroups);
if (!bResult)
{
partsToDestroy.Add(part);
}
}
int numPartsToDestroy = partsToDestroy.Count;
for (int i = 0; i < numPartsToDestroy; ++i)
{
HEU_GeoNode parentNode = partsToDestroy[i].ParentGeoNode;
if (parentNode != null)
{
parentNode.RemoveAndDestroyPart(partsToDestroy[i]);
}
else
{
HEU_PartData.DestroyPart(partsToDestroy[i]);
}
}
partsToDestroy.Clear();
ApplyObjectTransformToGeoNodes();
// Set visibility and attribute-based tag, layer, and scripts
bool bIsVisible = IsVisible();
foreach (HEU_GeoNode geoNode in _geoNodes)
{
geoNode.CalculateVisiblity(bIsVisible);
geoNode.CalculateColliderState();
geoNode.SetAttributeModifiersOnPartOutputs(session);
}
// Create editable attributes.
// This should happen after visibility has been calculated above
// since we need to show/hide the intermediate geometry during painting.
foreach (HEU_PartData part in meshParts)
{
if (part.ParentGeoNode.IsIntermediateOrEditable())
{
part.SetupAttributeGeometry(session);
}
}
}
public void GenerateGeometry(HEU_SessionBase session)
{
// Volumes could come in as a geonode + part for each heightfield layer.
// Otherwise the other geo types can be done individually.
bool bResult = false;
List<HEU_PartData> meshParts = new List<HEU_PartData>();
List<HEU_PartData> volumeParts = new List<HEU_PartData>();
List<HEU_PartData> partsToDestroy = new List<HEU_PartData>();
HEU_HoudiniAsset parentAsset = ParentAsset;
foreach (HEU_GeoNode geoNode in _geoNodes)
{
geoNode.GetPartsByOutputType(meshParts, volumeParts);
}
// Meshes
foreach (HEU_PartData part in meshParts)
{
bResult = part.GenerateMesh(session, parentAsset.GenerateUVs, parentAsset.GenerateTangents, parentAsset.GenerateNormals, parentAsset.UseLODGroups);
if (!bResult)
{
partsToDestroy.Add(part);
}
}
#if TERRAIN_SUPPORTED
// Volumes
// Each layer in the volume is retrieved as a volume part, in the display geo node.
// But we need to handle all layers as 1 terrain output in Unity, with 1 height layer and
// other layers as alphamaps.
if (volumeParts.Count > 0)
{
HEU_PartData heightLayerPart = null;
HEU_VolumeCache volumeCache = new HEU_VolumeCache();
volumeCache.GenerateTerrainFromParts(session, volumeParts, ParentAsset, out heightLayerPart);
// Remove volume parts that are not the height layer (even if heightLayerPart is null)
foreach (HEU_PartData part in volumeParts)
{
if (part != heightLayerPart)
{
partsToDestroy.Add(part);
}
}
}
#endif
int numPartsToDestroy = partsToDestroy.Count;
for(int i = 0; i < numPartsToDestroy; ++i)
{
HEU_GeoNode parentNode = partsToDestroy[i].ParentGeoNode;
if (parentNode != null)
{
parentNode.RemoveAndDestroyPart(partsToDestroy[i]);
}
else
{
HEU_PartData.DestroyPart(partsToDestroy[i]);
}
}
partsToDestroy.Clear();
ApplyObjectTransformToGeoNodes();
// Set visibility
bool bIsVisible = IsVisible();
foreach (HEU_GeoNode geoNode in _geoNodes)
{
geoNode.CalculateVisiblity(bIsVisible);
}
// Create editable attributes.
// This should happen after visibility has been calculated above
// since we need to show/hide the intermediate geometry during painting.
foreach (HEU_PartData part in meshParts)
{
if (part.ParentGeoNode.IsIntermediateOrEditable())
{
part.SetupAttributeGeometry(session);
}
}
}
