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;
}
public bool UploadAttributeViaMeshInput(HEU_SessionBase session, HAPI_NodeId geoID, HAPI_PartId partID)
{
// Need to upload same geometry as in the original Editable node, and with custom attribute values.
// First get the current geometry info and data.
HAPI_GeoInfo geoInfo = new HAPI_GeoInfo();
if(!session.GetGeoInfo(geoID, ref geoInfo))
{
return false;
}
HAPI_PartInfo oldPartInfo = new HAPI_PartInfo();
if(!session.GetPartInfo(geoID, partID, ref oldPartInfo))
{
return false;
}
int pointCount = oldPartInfo.pointCount;
int vertexCount = oldPartInfo.vertexCount;
int faceCount = oldPartInfo.faceCount;
// Get facecounts
int[] faceCountData = new int[faceCount];
if(!HEU_GeneralUtility.GetArray2Arg(geoID, partID, session.GetFaceCounts, faceCountData, 0, faceCount))
{
return false;
}
// Get indices
int[] vertexList = new int[vertexCount];
if (!HEU_GeneralUtility.GetArray2Arg(geoID, partID, session.GetVertexList, vertexList, 0, vertexCount))
{
return false;
}
List<HEU_AttributeData> pointAttributeDatas = new List<HEU_AttributeData>();
List<HEU_AttributeData> vertexAttributeDatas = new List<HEU_AttributeData>();
List<HEU_AttributeData> primitiveAttributeDatas = new List<HEU_AttributeData>();
List<HEU_AttributeData> detailAttributeDatas = new List<HEU_AttributeData>();
// Get all attributes, including editted
GetAttributesList(session, geoID, partID, pointAttributeDatas, HAPI_AttributeOwner.HAPI_ATTROWNER_POINT, oldPartInfo.pointAttributeCount);
GetAttributesList(session, geoID, partID, vertexAttributeDatas, HAPI_AttributeOwner.HAPI_ATTROWNER_VERTEX, oldPartInfo.vertexAttributeCount);
GetAttributesList(session, geoID, partID, primitiveAttributeDatas, HAPI_AttributeOwner.HAPI_ATTROWNER_PRIM, oldPartInfo.primitiveAttributeCount);
GetAttributesList(session, geoID, partID, detailAttributeDatas, HAPI_AttributeOwner.HAPI_ATTROWNER_DETAIL, oldPartInfo.detailAttributeCount);
// Now create new geometry info and populate it
HAPI_PartInfo newPartInfo = new HAPI_PartInfo();
newPartInfo.faceCount = faceCount;
newPartInfo.vertexCount = vertexCount;
newPartInfo.pointCount = pointCount;
newPartInfo.pointAttributeCount = pointAttributeDatas.Count;
newPartInfo.vertexAttributeCount = vertexAttributeDatas.Count;
newPartInfo.primitiveAttributeCount = primitiveAttributeDatas.Count;
newPartInfo.detailAttributeCount = detailAttributeDatas.Count;
int newPartID = partID;
if (!session.SetPartInfo(geoID, newPartID, ref newPartInfo))
{
return false;
}
if (!HEU_GeneralUtility.SetArray2Arg(geoID, newPartID, session.SetFaceCount, faceCountData, 0, newPartInfo.faceCount))
{
return false;
}
if (!HEU_GeneralUtility.SetArray2Arg(geoID, newPartID, session.SetVertexList, vertexList, 0, newPartInfo.vertexCount))
{
return false;
}
// Upload all attributes, include editted
UpdateAttributeList(session, geoID, partID, pointAttributeDatas);
UpdateAttributeList(session, geoID, partID, vertexAttributeDatas);
UpdateAttributeList(session, geoID, partID, primitiveAttributeDatas);
UpdateAttributeList(session, geoID, partID, detailAttributeDatas);
return session.CommitGeo(geoID);
}
/// <summary>
/// Fill in array of HAPI_Transform list. Use for large arrays where marshalling is done in chunks.
/// </summary>
/// <param name="nodeID">The parent node ID</param>
/// <param name="rstOrder">Transform order</param>
/// <param name="transforms">Array to fill. Should at least be size of length</param>
/// <param name="start">At least 0 and at most object count returned by ComposeObjectList</param>
/// <param name="length">Object count returned by ComposeObjectList. Should be at least 0 and at most object count - start</param>
/// <returns>True if successfully queuried the transform list</returns>
public static bool GetComposedObjectTransformsMemorySafe(HEU_SessionBase session, HAPI_NodeId nodeID, HAPI_RSTOrder rstOrder, [Out] HAPI_Transform[] transforms, int start, int length)
{
return HEU_GeneralUtility.GetArray2Arg(nodeID, rstOrder, session.GetComposedObjectTransforms, transforms, start, length);
}
private float[] GetHeightfield(HEU_SessionBase session, HAPI_NodeId geoID, HAPI_PartId partID, string partName, int terrainSize)
{
HAPI_VolumeInfo volumeInfo = new HAPI_VolumeInfo();
bool bResult = session.GetVolumeInfo(geoID, partID, ref volumeInfo);
if (!bResult)
{
return null;
}
int volumeXLength = volumeInfo.xLength;
int volumeYLength = volumeInfo.yLength;
// Number of heightfield values
int totalHeightValues = volumeXLength * volumeYLength;
float[] heightValues = new float[totalHeightValues];
bResult = HEU_GeneralUtility.GetArray2Arg(geoID, partID, session.GetHeightFieldData, heightValues, 0, totalHeightValues);
if (!bResult)
{
Debug.LogErrorFormat("Unable to get heightfield data from part {0}", partName);
return null;
}
float minHeight = heightValues[0];
float maxHeight = minHeight;
for (int i = 0; i < totalHeightValues; ++i)
{
float f = heightValues[i];
if (f > maxHeight)
{
maxHeight = f;
}
else if (f < minHeight)
{
minHeight = f;
}
}
float heightRange = (maxHeight - minHeight);
if(heightRange == 0f)
{
heightRange = 1f;
}
//Debug.LogFormat("{0} : {1}", HEU_SessionManager.GetString(volumeInfo.nameSH, session), heightRange);
// Remap height values to fit terrain size
int paddingWidth = terrainSize - volumeXLength;
int paddingLeft = Mathf.CeilToInt(paddingWidth * 0.5f);
int paddingRight = terrainSize - paddingLeft;
//Debug.LogFormat("Padding: Width={0}, Left={1}, Right={2}", paddingWidth, paddingLeft, paddingRight);
int paddingHeight = terrainSize - volumeYLength;
int paddingTop = Mathf.CeilToInt(paddingHeight * 0.5f);
int paddingBottom = terrainSize - paddingTop;
//Debug.LogFormat("Padding: Height={0}, Top={1}, Bottom={2}", paddingHeight, paddingTop, paddingBottom);
// Set height values at centre of the terrain, with padding on the sides if we resized
float[] resizedHeightValues = new float[terrainSize * terrainSize];
for (int y = 0; y < terrainSize; ++y)
{
for (int x = 0; x < terrainSize; ++x)
{
if (y >= paddingTop && y < (paddingBottom) && x >= paddingLeft && x < (paddingRight))
{
int ay = x - paddingLeft;
int ax = y - paddingTop;
float f = heightValues[ay + ax * volumeXLength] - minHeight;
f /= heightRange;
// Flip for right-hand to left-handed coordinate system
int ix = x;
int iy = terrainSize - (y + 1);
// Unity expects height array indexing to be [y, x].
resizedHeightValues[iy + ix * terrainSize] = f;
}
}
}
return resizedHeightValues;
}
private HEU_LoadBufferInstancer GeneratePointAttributeInstancerBuffer(HEU_SessionBase session, HAPI_NodeId geoID, HAPI_PartId partID,
string partName, HAPI_PartInfo partInfo)
{
int numInstances = partInfo.pointCount;
if (numInstances <= 0)
{
return null;
}
// Find type of instancer
string instanceAttrName = HEU_PluginSettings.InstanceAttr;
string unityInstanceAttrName = HEU_PluginSettings.UnityInstanceAttr;
string instancePrefixAttrName = HEU_Defines.DEFAULT_INSTANCE_PREFIX_ATTR;
HAPI_AttributeInfo instanceAttrInfo = new HAPI_AttributeInfo();
HAPI_AttributeInfo unityInstanceAttrInfo = new HAPI_AttributeInfo();
HAPI_AttributeInfo instancePrefixAttrInfo = new HAPI_AttributeInfo();
HEU_GeneralUtility.GetAttributeInfo(session, geoID, partID, instanceAttrName, ref instanceAttrInfo);
HEU_GeneralUtility.GetAttributeInfo(session, geoID, partID, unityInstanceAttrName, ref unityInstanceAttrInfo);
if (unityInstanceAttrInfo.exists)
{
// Object instancing via existing Unity object (path from point attribute)
HAPI_Transform[] instanceTransforms = new HAPI_Transform[numInstances];
if (!HEU_GeneralUtility.GetArray2Arg(geoID, HAPI_RSTOrder.HAPI_SRT, session.GetInstanceTransforms, instanceTransforms, 0, numInstances))
{
return null;
}
string[] instancePrefixes = null;
HEU_GeneralUtility.GetAttributeInfo(session, geoID, partID, instancePrefixAttrName, ref instancePrefixAttrInfo);
if (instancePrefixAttrInfo.exists)
{
instancePrefixes = HEU_GeneralUtility.GetAttributeStringData(session, geoID, partID, instancePrefixAttrName, ref instancePrefixAttrInfo);
}
string[] assetPaths = null;
// Attribute owner type determines whether to use single (detail) or multiple (point) asset(s) as source
if (unityInstanceAttrInfo.owner == HAPI_AttributeOwner.HAPI_ATTROWNER_POINT || unityInstanceAttrInfo.owner == HAPI_AttributeOwner.HAPI_ATTROWNER_DETAIL)
{
assetPaths = HEU_GeneralUtility.GetAttributeStringData(session, geoID, partID, unityInstanceAttrName, ref unityInstanceAttrInfo);
}
else
{
// Other attribute owned types are unsupported
SetLog(HEU_LoadData.LoadStatus.ERROR, string.Format("Unsupported attribute owner {0} for attribute {1}",
unityInstanceAttrInfo.owner, unityInstanceAttrName));
return null;
}
if (assetPaths == null)
{
SetLog(HEU_LoadData.LoadStatus.ERROR, "Unable to get instanced asset path from attribute!");
return null;
}
HEU_LoadBufferInstancer instancerBuffer = new HEU_LoadBufferInstancer();
instancerBuffer.InitializeBuffer(partID, partName, partInfo.isInstanced, true);
instancerBuffer._instanceTransforms = instanceTransforms;
instancerBuffer._instancePrefixes = instancePrefixes;
instancerBuffer._assetPaths = assetPaths;
return instancerBuffer;
}
else if (instanceAttrInfo.exists)
{
// Object instancing via internal object path is not supported
SetLog(HEU_LoadData.LoadStatus.ERROR, string.Format("Object instancing is not supported (part {0})!", partName));
}
else
{
// Standard object instancing via single Houdini object is not supported
SetLog(HEU_LoadData.LoadStatus.ERROR, string.Format("Object instancing is not supported (part {0})!", partName));
}
return null;
}
public static bool GenerateTerrainFromVolume(HEU_SessionBase session, ref HAPI_VolumeInfo volumeInfo, HAPI_NodeId geoID, HAPI_PartId partID,
GameObject gameObject, out TerrainData terrainData, out Vector3 volumePositionOffset)
{
terrainData = null;
volumePositionOffset = Vector3.zero;
if (volumeInfo.zLength == 1 && volumeInfo.tupleSize == 1)
{
// Heightfields will be converted to terrain in Unity.
// Unity requires terrainData.heightmapResolution to be square power of two plus 1 (eg. 513, 257, 129, 65).
// Houdini gives volumeInfo.xLength and volumeInfo.yLength which are the number of height values per dimension.
// Note that volumeInfo.xLength and volumeInfo.yLength is equal to Houdini heightfield size / grid spacing.
// The heightfield grid spacing is given as volumeTransformMatrix.scale but divided by 2 (grid spacing / 2 = volumeTransformMatrix.scale).
// It is recommended to use grid spacing of 2.
// Use the volumeInfo.transform to get the actual heightfield position and size.
Matrix4x4 volumeTransformMatrix = HEU_HAPIUtility.GetMatrixFromHAPITransform(ref volumeInfo.transform, false);
Vector3 position = HEU_HAPIUtility.GetPosition(ref volumeTransformMatrix);
Vector3 scale = HEU_HAPIUtility.GetScale(ref volumeTransformMatrix);
// Calculate real terrain size in both Houdini and Unity.
// The height values will be mapped over this terrain size.
float gridSpacingX = scale.x * 2f;
float gridSpacingY = scale.y * 2f;
//float gridSpacingZ = scale.z * 2f;
float multiplierOffsetX = Mathf.Round(scale.x);
float multiplierOffsetY = Mathf.Round(scale.y);
//float multiplierOffsetZ = Mathf.Round(scale.z);
float terrainSizeX = Mathf.Round(volumeInfo.xLength * gridSpacingX - multiplierOffsetX);
float terrainSizeY = Mathf.Round(volumeInfo.yLength * gridSpacingY - multiplierOffsetY);
//Debug.LogFormat("GS = {0},{1},{2}. SX = {1}. SY = {2}", gridSpacingX, gridSpacingY, gridSpacingZ, terrainSizeX, terrainSizeY);
//Debug.LogFormat("HeightField Pos:{0}, Scale:{1}", position, scale.ToString("{0.00}"));
//Debug.LogFormat("HeightField tileSize:{0}, xLength:{1}, yLength:{2}", volumeInfo.tileSize.ToString("{0.00}"), volumeInfo.xLength.ToString("{0.00}"), volumeInfo.yLength.ToString("{0.00}"));
//Debug.LogFormat("HeightField Terrain Size x:{0}, y:{1}", terrainSizeX.ToString("{0.00}"), terrainSizeY.ToString("{0.00}"));
//Debug.LogFormat("HeightField minX={0}, minY={1}, minZ={2}", volumeInfo.minX.ToString("{0.00}"), volumeInfo.minY.ToString("{0.00}"), volumeInfo.minZ.ToString("{0.00}"));
const int UNITY_MINIMUM_HEIGHTMAP_RESOLUTION = 33;
if (terrainSizeX < UNITY_MINIMUM_HEIGHTMAP_RESOLUTION || terrainSizeY < UNITY_MINIMUM_HEIGHTMAP_RESOLUTION)
{
Debug.LogWarningFormat("Unity Terrain has a minimum heightmap resolution of {0}. This HDA heightmap size is {1}x{2}."
+ "\nPlease resize the terrain to a value higher than this.",
UNITY_MINIMUM_HEIGHTMAP_RESOLUTION, terrainSizeX, terrainSizeY);
return false;
}
Terrain terrain = HEU_GeneralUtility.GetOrCreateComponent<Terrain>(gameObject);
TerrainCollider collider = HEU_GeneralUtility.GetOrCreateComponent<TerrainCollider>(gameObject);
if (terrain.terrainData == null)
{
terrain.terrainData = new TerrainData();
}
terrainData = terrain.terrainData;
collider.terrainData = terrainData;
// Heightmap resolution must be square power-of-two plus 1.
// Unity will automatically resize terrainData.heightmapResolution so need to handle the changed size (if Unity changed it).
int heightMapResolution = volumeInfo.xLength;
terrainData.heightmapResolution = heightMapResolution;
int terrainResizedDelta = terrainData.heightmapResolution - heightMapResolution;
if (terrainResizedDelta < 0)
{
Debug.LogWarningFormat("Note that Unity automatically resized terrain resolution to {0} from {1}. Use terrain size of power of two plus 1, and grid spacing of 2.", heightMapResolution, terrainData.heightmapResolution);
heightMapResolution = terrainData.heightmapResolution;
}
else if(terrainResizedDelta > 0)
{
Debug.LogErrorFormat("Unsupported terrain size. Use terrain size of power of two plus 1, and grid spacing of 2. (delta = {0})", terrainResizedDelta);
return false;
}
// Get the height values from Houdini and find the min and max height range.
int totalHeightValues = volumeInfo.xLength * volumeInfo.yLength;
float[] heightValues = new float[totalHeightValues];
bool bResult = HEU_GeneralUtility.GetArray2Arg(geoID, partID, session.GetHeightFieldData, heightValues, 0, totalHeightValues);
if (!bResult)
{
return false;
}
float minHeight = heightValues[0];
float maxHeight = minHeight;
for (int i = 0; i < totalHeightValues; ++i)
{
float f = heightValues[i];
if (f > maxHeight)
{
maxHeight = f;
}
else if (f < minHeight)
{
minHeight = f;
}
}
const int UNITY_MAX_HEIGHT_RANGE = 65536;
float heightRange = (maxHeight - minHeight);
if (Mathf.RoundToInt(heightRange) > UNITY_MAX_HEIGHT_RANGE)
{
Debug.LogWarningFormat("Unity Terrain has maximum height range of {0}. This HDA height range is {1}, so it will be maxed out at {0}.\nPlease resize to within valid range!",
UNITY_MAX_HEIGHT_RANGE, Mathf.RoundToInt(heightRange));
heightRange = UNITY_MAX_HEIGHT_RANGE;
}
int mapWidth = volumeInfo.xLength;
int mapHeight = volumeInfo.yLength;
int paddingWidth = heightMapResolution - mapWidth;
int paddingLeft = Mathf.CeilToInt(paddingWidth * 0.5f);
int paddingRight = heightMapResolution - paddingLeft;
//Debug.LogFormat("Padding: Width={0}, Left={1}, Right={2}", paddingWidth, paddingLeft, paddingRight);
int paddingHeight = heightMapResolution - mapHeight;
int paddingTop = Mathf.CeilToInt(paddingHeight * 0.5f);
int paddingBottom = heightMapResolution - paddingTop;
//Debug.LogFormat("Padding: Height={0}, Top={1}, Bottom={2}", paddingHeight, paddingTop, paddingBottom);
// Set height values at centre of the terrain, with padding on the sides if we resized
float[,] unityHeights = new float[heightMapResolution, heightMapResolution];
for (int y = 0; y < heightMapResolution; ++y)
{
for (int x = 0; x < heightMapResolution; ++x)
{
if (y >= paddingTop && y < (paddingBottom) && x >= paddingLeft && x < (paddingRight))
{
int ay = x - paddingLeft;
int ax = y - paddingTop;
// Unity expects normalized height values
float h = heightValues[ay + ax * mapWidth] - minHeight;
float f = h / heightRange;
// Flip for right-hand to left-handed coordinate system
int ix = x;
int iy = heightMapResolution - (y + 1);
// Unity expects height array indexing to be [y, x].
unityHeights[ix, iy] = f;
}
}
}
terrainData.baseMapResolution = heightMapResolution;
terrainData.alphamapResolution = heightMapResolution;
//int detailResolution = heightMapResolution;
// 128 is the maximum for resolutionPerPatch
const int resolutionPerPatch = 128;
terrainData.SetDetailResolution(resolutionPerPatch, resolutionPerPatch);
// Note SetHeights must be called before setting size in next line, as otherwise
// the internal terrain size will not change after setting the size.
terrainData.SetHeights(0, 0, unityHeights);
terrainData.size = new Vector3(terrainSizeX, heightRange, terrainSizeY);
terrain.Flush();
// Unity Terrain has origin at bottom left, whereas Houdini uses centre of terrain.
// Use volume bounds to set position offset when using split tiles
float xmin, xmax, zmin, zmax, ymin, ymax, xcenter, ycenter, zcenter;
session.GetVolumeBounds(geoID, partID, out xmin, out ymin, out zmin, out xmax, out ymax, out zmax, out xcenter,
out ycenter, out zcenter);
//Debug.LogFormat("xmin: {0}, xmax: {1}, ymin: {2}, ymax: {3}, zmin: {4}, zmax: {5}, xc: {6}, yc: {7}, zc: {8}",
// xmin, xmax, ymin, ymax, zmin, zmax, xcenter, ycenter, zcenter);
// Offset position is based on size of heightfield
float offsetX = (float)heightMapResolution / (float)mapWidth;
float offsetZ = (float)heightMapResolution / (float)mapHeight;
//Debug.LogFormat("offsetX: {0}, offsetZ: {1}", offsetX, offsetZ);
//Debug.LogFormat("position.x: {0}, position.z: {1}", position.x, position.z);
//volumePositionOffset = new Vector3(-position.x * offsetX, minHeight + position.y, position.z * offsetZ);
volumePositionOffset = new Vector3((terrainSizeX + xmin) * offsetX, minHeight + position.y, zmin * offsetZ);
return true;
}
else
{
Debug.LogWarning("Non-heightfield volume type not supported!");
}
return false;
}
public static HEU_GenerateGeoCache GetPopulatedGeoCache(HEU_SessionBase session, HAPI_NodeId geoID, HAPI_PartId partID)
{
#if HEU_PROFILER_ON
float generateGeoCacheStartTime = Time.realtimeSinceStartup;
#endif
HEU_GenerateGeoCache geoCache = new HEU_GenerateGeoCache();
Debug.Assert(geoID != HEU_Defines.HEU_INVALID_NODE_ID, "Invalid Geo ID! Unable to update materials!");
Debug.Assert(partID != HEU_Defines.HEU_INVALID_NODE_ID, "Invalid Part ID! Unable to update materials!");
geoCache._geoInfo = new HAPI_GeoInfo();
if (!session.GetGeoInfo(geoID, ref geoCache._geoInfo))
{
return null;
}
geoCache._partInfo = new HAPI_PartInfo();
if (!session.GetPartInfo(geoID, partID, ref geoCache._partInfo))
{
return null;
}
geoCache._partName = HEU_SessionManager.GetString(geoCache._partInfo.nameSH, session);
// Unity max indices limitation!
#if UNITY_2017_3_OR_NEWER
uint UNITY_MAX_VERTS = uint.MaxValue;
#else
uint UNITY_MAX_VERTS = ushort.MaxValue;
#endif
uint maxVertexCount = Convert.ToUInt32(geoCache._partInfo.vertexCount);
if (maxVertexCount > UNITY_MAX_VERTS)
{
Debug.LogErrorFormat("Part {0} has vertex count of {1} which is above Unity maximum of {2}.\nUse Unity 2017.3+ or reduce this in Houdini.",
geoCache._partName, maxVertexCount, UNITY_MAX_VERTS);
return null;
}
geoCache._vertexList = new int[geoCache._partInfo.vertexCount];
if (!HEU_GeneralUtility.GetArray2Arg(geoID, partID, session.GetVertexList, geoCache._vertexList, 0, geoCache._partInfo.vertexCount))
{
return null;
}
geoCache._houdiniMaterialIDs = new HAPI_NodeId[geoCache._partInfo.faceCount];
if (!session.GetMaterialNodeIDsOnFaces(geoID, partID, ref geoCache._singleFaceHoudiniMaterial, geoCache._houdiniMaterialIDs, geoCache._partInfo.faceCount))
{
return null;
}
geoCache.PopulateUnityMaterialData(session);
if (!geoCache.PopulateGeometryData(session))
{
return null;
}
#if HEU_PROFILER_ON
Debug.LogFormat("GENERATE GEO CACHE TIME:: {0}", (Time.realtimeSinceStartup - generateGeoCacheStartTime));
#endif
return geoCache;
}
