private void GetAttributesList(HEU_SessionBase session, HAPI_NodeId geoID, HAPI_PartId partID, List<HEU_AttributeData> attributesList, HAPI_AttributeOwner ownerType, int attributeCount)
{
if (attributeCount > 0)
{
string[] attributeNames = new string[attributeCount];
if (session.GetAttributeNames(geoID, partID, ownerType, ref attributeNames, attributeCount))
{
for (int i = 0; i < attributeNames.Length; ++i)
{
HEU_AttributeData attrData = GetAttributeData(attributeNames[i]);
if (attrData == null)
{
// New attribute, so create and populate
HAPI_AttributeInfo attributeInfo = new HAPI_AttributeInfo();
if (!session.GetAttributeInfo(geoID, partID, attributeNames[i], ownerType, ref attributeInfo) || !attributeInfo.exists)
{
continue;
}
attrData = CreateAttribute(attributeNames[i], ref attributeInfo);
PopulateAttributeData(session, geoID, partID, attrData, ref attributeInfo);
attributesList.Add(attrData);
}
else
{
// Existing, so just add it
attributesList.Add(attrData);
}
}
}
}
}
public void SyncAllAttributesFrom(HEU_SessionBase session, HEU_HoudiniAsset asset, HAPI_NodeId geoID, ref HAPI_PartInfo partInfo, GameObject outputGameObject)
{
_geoID = geoID;
_partID = partInfo.id;
HAPI_GeoInfo geoInfo = new HAPI_GeoInfo();
if(session.GetGeoInfo(_geoID, ref geoInfo))
{
_geoName = HEU_SessionManager.GetString(geoInfo.nameSH, session);
}
if (outputGameObject != null)
{
_outputTransform = outputGameObject.transform;
}
// Need the vertex list of indices to map the positions to vertex colors
_vertexIndices = new int[partInfo.vertexCount];
if (!HEU_GeneralUtility.GetArray2Arg(geoID, partInfo.id, session.GetVertexList, _vertexIndices, 0, partInfo.vertexCount))
{
return;
}
// Note that this currently only supports point attributes
int attributePointCount = partInfo.attributeCounts[(int)HAPI_AttributeOwner.HAPI_ATTROWNER_POINT];
string[] pointAttributeNames = new string[attributePointCount];
if(!session.GetAttributeNames(geoID, partInfo.id, HAPI_AttributeOwner.HAPI_ATTROWNER_POINT, ref pointAttributeNames, attributePointCount))
{
Debug.LogErrorFormat("Failed to sync attributes. Unable to retrieve attribute names.");
return;
}
// Create new list of attributes. We'll move existing attributes that are still in use as we find them.
List<HEU_AttributeData> newAttributeDatas = new List<HEU_AttributeData>();
foreach (string pointAttributeName in pointAttributeNames)
{
if(string.IsNullOrEmpty(pointAttributeName))
{
continue;
}
// Get position attribute values separately. Used for painting and editing points in 3D scene.
HAPI_AttributeInfo pointAttributeInfo = new HAPI_AttributeInfo();
if(session.GetAttributeInfo(geoID, partInfo.id, pointAttributeName, HAPI_AttributeOwner.HAPI_ATTROWNER_POINT, ref pointAttributeInfo))
{
if (pointAttributeName.Equals(HEU_Defines.HAPI_ATTRIB_POSITION))
{
if (pointAttributeInfo.storage != HAPI_StorageType.HAPI_STORAGETYPE_FLOAT)
{
Debug.LogErrorFormat("Expected float type for position attribute, but got {0}", pointAttributeInfo.storage);
return;
}
_positionAttributeValues = new Vector3[pointAttributeInfo.count];
float[] data = new float[0];
HEU_GeneralUtility.GetAttribute(session, geoID, partInfo.id, pointAttributeName, ref pointAttributeInfo, ref data, session.GetAttributeFloatData);
for (int i = 0; i < pointAttributeInfo.count; ++i)
{
_positionAttributeValues[i] = new Vector3(-data[i * pointAttributeInfo.tupleSize + 0], data[i * pointAttributeInfo.tupleSize + 1], data[i * pointAttributeInfo.tupleSize + 2]);
}
// We don't let position attributes be editted (for now anyway)
continue;
}
HEU_AttributeData attrData = GetAttributeData(pointAttributeName);
if (attrData == null)
{
// Attribute data not found. Create it.
attrData = CreateAttribute(pointAttributeName, ref pointAttributeInfo);
//Debug.LogFormat("Created attribute data: {0}", pointAttributeName);
}
// Add to new list.
newAttributeDatas.Add(attrData);
// Sync the attribute info to data.
PopulateAttributeData(session, geoID, partInfo.id, attrData, ref pointAttributeInfo);
if(pointAttributeName.Equals(HEU_Defines.HAPI_ATTRIB_COLOR) || pointAttributeInfo.typeInfo == HAPI_AttributeTypeInfo.HAPI_ATTRIBUTE_TYPE_COLOR)
{
_hasColorAttribute = true;
}
}
else
{
// Failed to get point attribute info!
}
}
// Overwriting the old list with the new should automatically remove unused attribute datas.
_attributeDatas = newAttributeDatas;
}