public static bool GetAttribute<T>(HEU_SessionBase session, HAPI_NodeId geoID, HAPI_PartId partID, string name, ref HAPI_AttributeInfo info, ref T[] data, GetAttributeArrayInputFunc<T> getFunc)
{
int originalTupleSize = info.tupleSize;
bool bResult = false;
for (HAPI_AttributeOwner type = 0; type < HAPI_AttributeOwner.HAPI_ATTROWNER_MAX; ++type)
{
bResult = session.GetAttributeInfo(geoID, partID, name, type, ref info);
if (bResult && info.exists)
{
break;
}
}
if (!bResult || !info.exists)
{
return false;
}
if (originalTupleSize > 0)
{
info.tupleSize = originalTupleSize;
}
data = new T[info.count * info.tupleSize];
return GetAttributeArray(geoID, partID, name, ref info, data, getFunc, info.count);
}
public static bool GetAttributeArray<T>(HAPI_NodeId geoID, HAPI_PartId partID, string name, ref HAPI_AttributeInfo info, T[] items, GetAttributeArrayInputFunc<T> getFunc, int count)
{
int maxArraySize = HEU_Defines.HAPI_MAX_PAGE_SIZE / (Marshal.SizeOf(typeof(T)) * info.tupleSize);
int localCount = count;
int currentIndex = 0;
bool bResult = false;
while (localCount > 0)
{
int length = 0;
if (localCount > maxArraySize)
{
length = maxArraySize;
localCount -= maxArraySize;
}
else
{
length = localCount;
localCount = 0;
}
T[] localArray = new T[length * info.tupleSize];
bResult = getFunc(geoID, partID, name, ref info, localArray, currentIndex, length);
if (!bResult)
{
break;
}
// Copy data from temporary array
for (int i = currentIndex; i < currentIndex + length; ++i)
{
for (int j = 0; j < info.tupleSize; ++j)
{
items[i * info.tupleSize + j] = localArray[(i - currentIndex) * info.tupleSize + j];
}
}
currentIndex += length;
}
return bResult;
}
