private void GenerateTerrain(List<HEU_LoadBufferVolume> terrainBuffers)
{
Transform parent = this.gameObject.transform;
// Directory to store generated terrain files.
string outputTerrainpath = GetOutputCacheDirectory();
outputTerrainpath = HEU_Platform.BuildPath(outputTerrainpath, "Terrain");
int numVolumes = terrainBuffers.Count;
for(int t = 0; t < numVolumes; ++t)
{
if (terrainBuffers[t]._heightMap != null)
{
GameObject newGameObject = new GameObject("heightfield_" + terrainBuffers[t]._tileIndex);
Transform newTransform = newGameObject.transform;
newTransform.parent = parent;
HEU_GeneratedOutput generatedOutput = new HEU_GeneratedOutput();
generatedOutput._outputData._gameObject = newGameObject;
Terrain terrain = HEU_GeneralUtility.GetOrCreateComponent<Terrain>(newGameObject);
TerrainCollider collider = HEU_GeneralUtility.GetOrCreateComponent<TerrainCollider>(newGameObject);
if (!string.IsNullOrEmpty(terrainBuffers[t]._terrainDataPath))
{
// Load the source TerrainData, then make a unique copy of it in the cache folder
TerrainData sourceTerrainData = HEU_AssetDatabase.LoadAssetAtPath(terrainBuffers[t]._terrainDataPath, typeof(TerrainData)) as TerrainData;
if (sourceTerrainData == null)
{
Debug.LogWarningFormat("TerrainData, set via attribute, not found at: {0}", terrainBuffers[t]._terrainDataPath);
}
terrain.terrainData = HEU_AssetDatabase.CopyUniqueAndLoadAssetAtAnyPath(sourceTerrainData, outputTerrainpath, typeof(TerrainData)) as TerrainData;
if (terrain.terrainData != null)
{
// Store path so that it can be deleted on clean up
AddGeneratedOutputFilePath(HEU_AssetDatabase.GetAssetPath(terrain.terrainData));
}
}
if (terrain.terrainData == null)
{
terrain.terrainData = new TerrainData();
}
TerrainData terrainData = terrain.terrainData;
collider.terrainData = terrainData;
HEU_TerrainUtility.SetTerrainMaterial(terrain, terrainBuffers[t]._specifiedTerrainMaterialName);
#if UNITY_2018_3_OR_NEWER
terrain.allowAutoConnect = true;
// This has to be set after setting material
terrain.drawInstanced = true;
#endif
int heightMapSize = terrainBuffers[t]._heightMapWidth;
terrainData.heightmapResolution = heightMapSize;
if (terrainData.heightmapResolution != heightMapSize)
{
Debug.LogErrorFormat("Unsupported terrain size: {0}", heightMapSize);
continue;
}
// The terrainData.baseMapResolution is not set here, but rather left to whatever default Unity uses
// The terrainData.alphamapResolution is set later when setting the alphamaps.
// 32 is the default for resolutionPerPatch
const int detailResolution = 1024;
const int resolutionPerPatch = 32;
terrainData.SetDetailResolution(detailResolution, resolutionPerPatch);
terrainData.SetHeights(0, 0, terrainBuffers[t]._heightMap);
// Note that Unity uses a default height range of 600 when a flat terrain is created.
// Without a non-zero value for the height range, user isn't able to draw heights.
// Therefore, set 600 as the value if height range is currently 0 (due to flat heightfield).
float heightRange = terrainBuffers[t]._heightRange;
if (heightRange == 0)
{
heightRange = 600;
}
terrainData.size = new Vector3(terrainBuffers[t]._terrainSizeX, heightRange, terrainBuffers[t]._terrainSizeY);
terrain.Flush();
// Set position
HAPI_Transform hapiTransformVolume = new HAPI_Transform(true);
hapiTransformVolume.position[0] += terrainBuffers[t]._position[0];
hapiTransformVolume.position[1] += terrainBuffers[t]._position[1];
hapiTransformVolume.position[2] += terrainBuffers[t]._position[2];
HEU_HAPIUtility.ApplyLocalTransfromFromHoudiniToUnity(ref hapiTransformVolume, newTransform);
// Set layers
Texture2D defaultTexture = HEU_VolumeCache.LoadDefaultSplatTexture();
int numLayers = terrainBuffers[t]._splatLayers.Count;
#if UNITY_2018_3_OR_NEWER
// Create TerrainLayer for each heightfield layer.
// Note that height and mask layers are ignored (i.e. not created as TerrainLayers).
// Since height layer is first, only process layers from 2nd index onwards.
if (numLayers > 1)
{
// Keep existing TerrainLayers, and either update or append to them
TerrainLayer[] existingTerrainLayers = terrainData.terrainLayers;
// Total layers are existing layers + new alpha maps
List<TerrainLayer> finalTerrainLayers = new List<TerrainLayer>(existingTerrainLayers);
for (int m = 1; m < numLayers; ++m)
{
TerrainLayer terrainlayer = null;
int terrainLayerIndex = -1;
bool bSetTerrainLayerProperties = true;
HEU_LoadBufferVolumeLayer layer = terrainBuffers[t]._splatLayers[m];
// Look up TerrainLayer file via attribute if user has set it
if (!string.IsNullOrEmpty(layer._layerPath))
{
terrainlayer = HEU_AssetDatabase.LoadAssetAtPath(layer._layerPath, typeof(TerrainLayer)) as TerrainLayer;
if (terrainlayer == null)
{
Debug.LogWarningFormat("TerrainLayer, set via attribute, not found at: {0}", layer._layerPath);
continue;
}
else
{
// Always check if its part of existing list so as not to add it again
terrainLayerIndex = HEU_TerrainUtility.GetTerrainLayerIndex(terrainlayer, existingTerrainLayers);
}
}
if (terrainlayer == null)
{
terrainlayer = new TerrainLayer();
terrainLayerIndex = finalTerrainLayers.Count;
finalTerrainLayers.Add(terrainlayer);
}
else
{
// For existing TerrainLayer, make a copy of it if it has custom layer attributes
// because we don't want to change the original TerrainLayer.
if (layer._hasLayerAttributes && terrainLayerIndex >= 0)
{
// Copy the TerrainLayer file
TerrainLayer prevTerrainLayer = terrainlayer;
terrainlayer = HEU_AssetDatabase.CopyAndLoadAssetAtAnyPath(terrainlayer, outputTerrainpath, typeof(TerrainLayer), true) as TerrainLayer;
if (terrainlayer != null)
{
// Update the TerrainLayer reference in the list with this copy
finalTerrainLayers[terrainLayerIndex] = terrainlayer;
// Store path for clean up later
AddGeneratedOutputFilePath(HEU_AssetDatabase.GetAssetPath(terrainlayer));
}
else
{
Debug.LogErrorFormat("Unable to copy TerrainLayer '{0}' for generating Terrain. "
+ "Using original TerrainLayer. Will not be able to set any TerrainLayer properties.", layer._layerName);
terrainlayer = prevTerrainLayer;
bSetTerrainLayerProperties = false;
// Again, continuing on to keep proper indexing.
}
}
}
if (bSetTerrainLayerProperties)
{
if (!string.IsNullOrEmpty(layer._diffuseTexturePath))
{
terrainlayer.diffuseTexture = HEU_MaterialFactory.LoadTexture(layer._diffuseTexturePath);
}
if (terrainlayer.diffuseTexture == null)
{
terrainlayer.diffuseTexture = defaultTexture;
}
terrainlayer.diffuseRemapMin = Vector4.zero;
terrainlayer.diffuseRemapMax = Vector4.one;
if (!string.IsNullOrEmpty(layer._maskTexturePath))
{
terrainlayer.maskMapTexture = HEU_MaterialFactory.LoadTexture(layer._maskTexturePath);
}
terrainlayer.maskMapRemapMin = Vector4.zero;
terrainlayer.maskMapRemapMax = Vector4.one;
terrainlayer.metallic = layer._metallic;
if (!string.IsNullOrEmpty(layer._normalTexturePath))
{
terrainlayer.normalMapTexture = HEU_MaterialFactory.LoadTexture(layer._normalTexturePath);
}
terrainlayer.normalScale = layer._normalScale;
terrainlayer.smoothness = layer._smoothness;
terrainlayer.specular = layer._specularColor;
terrainlayer.tileOffset = layer._tileOffset;
if (layer._tileSize.magnitude == 0f && terrainlayer.diffuseTexture != null)
{
// Use texture size if tile size is 0
layer._tileSize = new Vector2(terrainlayer.diffuseTexture.width, terrainlayer.diffuseTexture.height);
}
terrainlayer.tileSize = layer._tileSize;
}
}
terrainData.terrainLayers = finalTerrainLayers.ToArray();
}
#else
// Need to create SplatPrototype for each layer in heightfield, representing the textures.
SplatPrototype[] splatPrototypes = new SplatPrototype[numLayers];
for (int m = 0; m < numLayers; ++m)
{
splatPrototypes[m] = new SplatPrototype();
HEU_LoadBufferVolumeLayer layer = terrainBuffers[t]._splatLayers[m];
Texture2D diffuseTexture = null;
if (!string.IsNullOrEmpty(layer._diffuseTexturePath))
{
diffuseTexture = HEU_MaterialFactory.LoadTexture(layer._diffuseTexturePath);
}
if (diffuseTexture == null)
{
diffuseTexture = defaultTexture;
}
splatPrototypes[m].texture = diffuseTexture;
splatPrototypes[m].tileOffset = layer._tileOffset;
if (layer._tileSize.magnitude == 0f && diffuseTexture != null)
{
// Use texture size if tile size is 0
layer._tileSize = new Vector2(diffuseTexture.width, diffuseTexture.height);
}
splatPrototypes[m].tileSize = layer._tileSize;
splatPrototypes[m].metallic = layer._metallic;
splatPrototypes[m].smoothness = layer._smoothness;
if (!string.IsNullOrEmpty(layer._normalTexturePath))
{
splatPrototypes[m].normalMap = HEU_MaterialFactory.LoadTexture(layer._normalTexturePath);
}
}
terrainData.splatPrototypes = splatPrototypes;
#endif
// Set the splatmaps
if (terrainBuffers[t]._splatMaps != null)
{
// Set the alphamap size before setting the alphamaps to get correct scaling
// The alphamap size comes from the first alphamap layer
int alphamapResolution = terrainBuffers[t]._heightMapWidth;
if (numLayers > 1)
{
alphamapResolution = terrainBuffers[t]._splatLayers[1]._heightMapWidth;
}
terrainData.alphamapResolution = alphamapResolution;
terrainData.SetAlphamaps(0, 0, terrainBuffers[t]._splatMaps);
}
// Set the tree scattering
if (terrainBuffers[t]._scatterTrees != null)
{
HEU_TerrainUtility.ApplyScatterTrees(terrainData, terrainBuffers[t]._scatterTrees);
}
// Set the detail layers
if (terrainBuffers[t]._detailPrototypes != null)
{
HEU_TerrainUtility.ApplyDetailLayers(terrain, terrainData, terrainBuffers[t]._detailProperties,
terrainBuffers[t]._detailPrototypes, terrainBuffers[t]._detailMaps);
}
terrainBuffers[t]._generatedOutput = generatedOutput;
_generatedOutputs.Add(generatedOutput);
SetOutputVisiblity(terrainBuffers[t]);
}
}
}
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 terrainSizeX = Mathf.Round((volumeInfo.xLength - 1) * gridSpacingX);
float terrainSizeY = Mathf.Round((volumeInfo.yLength - 1) * gridSpacingY);
//Debug.LogFormat("GS = {0},{1},{2}. SX = {1}. SY = {2}", gridSpacingX, gridSpacingY, 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.
float minHeight = 0;
float maxHeight = 0;
float[] heightValues = null;
if (!GetHeightfieldValues(session, volumeInfo.xLength, volumeInfo.yLength, geoID, partID, ref heightValues, ref minHeight, ref maxHeight))
{
return false;
}
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;
}
private void GenerateTerrain(List<HEU_LoadBufferVolume> terrainBuffers)
{
Transform parent = this.gameObject.transform;
int numVolumes = terrainBuffers.Count;
for(int t = 0; t < numVolumes; ++t)
{
if (terrainBuffers[t]._heightMap != null)
{
GameObject newGameObject = new GameObject("heightfield_" + terrainBuffers[t]._tileIndex);
Transform newTransform = newGameObject.transform;
newTransform.parent = parent;
HEU_GeneratedOutput generatedOutput = new HEU_GeneratedOutput();
generatedOutput._outputData._gameObject = newGameObject;
Terrain terrain = HEU_GeneralUtility.GetOrCreateComponent<Terrain>(newGameObject);
TerrainCollider collider = HEU_GeneralUtility.GetOrCreateComponent<TerrainCollider>(newGameObject);
if (!string.IsNullOrEmpty(terrainBuffers[t]._terrainDataPath))
{
terrain.terrainData = HEU_AssetDatabase.LoadAssetAtPath(terrainBuffers[t]._terrainDataPath, typeof(TerrainData)) as TerrainData;
if (terrain.terrainData == null)
{
Debug.LogWarningFormat("TerrainData, set via attribute, not found at: {0}", terrainBuffers[t]._terrainDataPath);
}
}
if (terrain.terrainData == null)
{
terrain.terrainData = new TerrainData();
}
TerrainData terrainData = terrain.terrainData;
collider.terrainData = terrainData;
HEU_TerrainUtility.SetTerrainMaterial(terrain);
#if UNITY_2018_3_OR_NEWER
terrain.allowAutoConnect = true;
// This has to be set after setting material
terrain.drawInstanced = true;
#endif
int heightMapSize = terrainBuffers[t]._heightMapWidth;
terrainData.heightmapResolution = heightMapSize;
if (terrainData.heightmapResolution != heightMapSize)
{
Debug.LogErrorFormat("Unsupported terrain size: {0}", heightMapSize);
continue;
}
// The terrainData.baseMapResolution is not set here, but rather left to whatever default Unity uses
// The terrainData.alphamapResolution is set later when setting the alphamaps.
// 32 is the default for resolutionPerPatch
const int detailResolution = 1024;
const int resolutionPerPatch = 32;
terrainData.SetDetailResolution(detailResolution, resolutionPerPatch);
terrainData.SetHeights(0, 0, terrainBuffers[t]._heightMap);
// Note that Unity uses a default height range of 600 when a flat terrain is created.
// Without a non-zero value for the height range, user isn't able to draw heights.
// Therefore, set 600 as the value if height range is currently 0 (due to flat heightfield).
float heightRange = terrainBuffers[t]._heightRange;
if (heightRange == 0)
{
heightRange = 600;
}
terrainData.size = new Vector3(terrainBuffers[t]._terrainSizeX, heightRange, terrainBuffers[t]._terrainSizeY);
terrain.Flush();
// Set position
HAPI_Transform hapiTransformVolume = new HAPI_Transform(true);
hapiTransformVolume.position[0] += terrainBuffers[t]._position[0];
hapiTransformVolume.position[1] += terrainBuffers[t]._position[1];
hapiTransformVolume.position[2] += terrainBuffers[t]._position[2];
HEU_HAPIUtility.ApplyLocalTransfromFromHoudiniToUnity(ref hapiTransformVolume, newTransform);
// Set layers
Texture2D defaultTexture = HEU_VolumeCache.LoadDefaultSplatTexture();
int numLayers = terrainBuffers[t]._layers.Count;
#if UNITY_2018_3_OR_NEWER
// Create TerrainLayer for each heightfield layer.
// Note that height and mask layers are ignored (i.e. not created as TerrainLayers).
// Since height layer is first, only process layers from 2nd index onwards.
if (numLayers > 1)
{
TerrainLayer[] terrainLayers = new TerrainLayer[numLayers - 1];
for (int m = 1; m < numLayers; ++m)
{
TerrainLayer terrainlayer = null;
HEU_LoadBufferVolumeLayer layer = terrainBuffers[t]._layers[m];
// Look up TerrainLayer file via attribute if user has set it
if (!string.IsNullOrEmpty(layer._layerPath))
{
terrainlayer = HEU_AssetDatabase.LoadAssetAtPath(layer._layerPath, typeof(TerrainLayer)) as TerrainLayer;
if (terrainlayer == null)
{
Debug.LogWarningFormat("TerrainLayer, set via attribute, not found at: {0}", layer._layerPath);
continue;
}
}
if (terrainlayer == null)
{
terrainlayer = new TerrainLayer();
}
if (!string.IsNullOrEmpty(layer._diffuseTexturePath))
{
terrainlayer.diffuseTexture = HEU_MaterialFactory.LoadTexture(layer._diffuseTexturePath);
}
if (terrainlayer.diffuseTexture == null)
{
terrainlayer.diffuseTexture = defaultTexture;
}
terrainlayer.diffuseRemapMin = Vector4.zero;
terrainlayer.diffuseRemapMax = Vector4.one;
if (!string.IsNullOrEmpty(layer._maskTexturePath))
{
terrainlayer.maskMapTexture = HEU_MaterialFactory.LoadTexture(layer._maskTexturePath);
}
terrainlayer.maskMapRemapMin = Vector4.zero;
terrainlayer.maskMapRemapMax = Vector4.one;
terrainlayer.metallic = layer._metallic;
if (!string.IsNullOrEmpty(layer._normalTexturePath))
{
terrainlayer.normalMapTexture = HEU_MaterialFactory.LoadTexture(layer._normalTexturePath);
}
terrainlayer.normalScale = layer._normalScale;
terrainlayer.smoothness = layer._smoothness;
terrainlayer.specular = layer._specularColor;
terrainlayer.tileOffset = layer._tileOffset;
if (layer._tileSize.magnitude == 0f && terrainlayer.diffuseTexture != null)
{
// Use texture size if tile size is 0
layer._tileSize = new Vector2(terrainlayer.diffuseTexture.width, terrainlayer.diffuseTexture.height);
}
terrainlayer.tileSize = layer._tileSize;
// Note index is m - 1 due to skipping height layer
terrainLayers[m - 1] = terrainlayer;
}
terrainData.terrainLayers = terrainLayers;
}
#else
// Need to create SplatPrototype for each layer in heightfield, representing the textures.
SplatPrototype[] splatPrototypes = new SplatPrototype[numLayers];
for (int m = 0; m < numLayers; ++m)
{
splatPrototypes[m] = new SplatPrototype();
HEU_LoadBufferVolumeLayer layer = terrainBuffers[t]._layers[m];
Texture2D diffuseTexture = null;
if (!string.IsNullOrEmpty(layer._diffuseTexturePath))
{
diffuseTexture = HEU_MaterialFactory.LoadTexture(layer._diffuseTexturePath);
}
if (diffuseTexture == null)
{
diffuseTexture = defaultTexture;
}
splatPrototypes[m].texture = diffuseTexture;
splatPrototypes[m].tileOffset = layer._tileOffset;
if (layer._tileSize.magnitude == 0f && diffuseTexture != null)
{
// Use texture size if tile size is 0
layer._tileSize = new Vector2(diffuseTexture.width, diffuseTexture.height);
}
splatPrototypes[m].tileSize = layer._tileSize;
splatPrototypes[m].metallic = layer._metallic;
splatPrototypes[m].smoothness = layer._smoothness;
if (!string.IsNullOrEmpty(layer._normalTexturePath))
{
splatPrototypes[m].normalMap = HEU_MaterialFactory.LoadTexture(layer._normalTexturePath);
}
}
terrainData.splatPrototypes = splatPrototypes;
#endif
// Set the splatmaps
if (terrainBuffers[t]._splatMaps != null)
{
// Set the alphamap size before setting the alphamaps to get correct scaling
// The alphamap size comes from the first alphamap layer
int alphamapResolution = terrainBuffers[t]._heightMapWidth;
if (numLayers > 1)
{
alphamapResolution = terrainBuffers[t]._layers[1]._heightMapWidth;
}
terrainData.alphamapResolution = alphamapResolution;
terrainData.SetAlphamaps(0, 0, terrainBuffers[t]._splatMaps);
}
// Set the tree scattering
if (terrainBuffers[t]._scatterTrees != null)
{
HEU_TerrainUtility.ApplyScatter(terrainData, terrainBuffers[t]._scatterTrees);
}
terrainBuffers[t]._generatedOutput = generatedOutput;
_generatedOutputs.Add(generatedOutput);
SetOutputVisiblity(terrainBuffers[t]);
}
}
}
/// <summary>
/// Creates terrain from given volumeInfo for the given gameObject.
/// If gameObject has a valid Terrain component, then it is reused.
/// Similarly, if the Terrain component has a valid TerrainData, or if the given terrainData is valid, then it is used.
/// Otherwise a new TerrainData is created and set to the Terrain.
/// Populates the volumePositionOffset with the heightfield offset position.
/// Returns true if successfully created the terrain, otherwise false.
/// </summary>
/// <param name="session">Houdini Engine session to query heightfield data from</param>
/// <param name="volumeInfo">Volume info pertaining to the heightfield to generate the Terrain from</param>
/// <param name="geoID">The geometry ID</param>
/// <param name="partID">The part ID (height layer)</param>
/// <param name="gameObject">The target GameObject containing the Terrain component</param>
/// <param name="terrainData">A valid TerrainData to use, or if empty, a new one is created and populated</param>
/// <param name="volumePositionOffset">Heightfield offset</param>
/// <returns>True if successfully popupated the terrain</returns>
public static bool GenerateTerrainFromVolume(HEU_SessionBase session, ref HAPI_VolumeInfo volumeInfo, HAPI_NodeId geoID, HAPI_PartId partID,
GameObject gameObject, ref TerrainData terrainData, out Vector3 volumePositionOffset, ref Terrain terrain)
{
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 terrainSizeX = Mathf.Round((volumeInfo.xLength - 1) * gridSpacingX);
float terrainSizeY = Mathf.Round((volumeInfo.yLength - 1) * gridSpacingY);
// Test size
//float terrainSizeX = Mathf.Round((volumeInfo.xLength) * gridSpacingX);
//float terrainSizeY = Mathf.Round((volumeInfo.yLength) * gridSpacingY);
//Debug.LogFormat("GS = {0},{1},{2}. SX = {1}. SY = {2}", gridSpacingX, gridSpacingY, 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;
}
bool bNewTerrain = false;
bool bNewTerrainData = false;
terrain = gameObject.GetComponent<Terrain>();
if (terrain == null)
{
terrain = gameObject.AddComponent<Terrain>();
bNewTerrain = true;
}
#if !HEU_TERRAIN_COLLIDER_DISABLED
TerrainCollider collider = HEU_GeneralUtility.GetOrCreateComponent<TerrainCollider>(gameObject);
#endif
// Look up terrain material, if specified, on the height layer
string specifiedTerrainMaterialName = HEU_GeneralUtility.GetMaterialAttributeValueFromPart(session,
geoID, partID);
// This ensures to reuse existing terraindata, and only creates new if none exist or none provided
if (terrain.terrainData == null)
{
if (terrainData == null)
{
terrainData = new TerrainData();
bNewTerrainData = true;
}
terrain.terrainData = terrainData;
SetTerrainMaterial(terrain, specifiedTerrainMaterialName);
}
terrainData = terrain.terrainData;
#if !HEU_TERRAIN_COLLIDER_DISABLED
collider.terrainData = terrainData;
#endif
if (bNewTerrain)
{
#if UNITY_2018_3_OR_NEWER
terrain.allowAutoConnect = true;
// This has to be set after setting material
terrain.drawInstanced = true;
#endif
}
// 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. Given size is {0} but Unity resized it to {1}.", heightMapResolution, terrainData.heightmapResolution);
return false;
}
int mapWidth = volumeInfo.xLength;
int mapHeight = volumeInfo.yLength;
// Get the converted height values from Houdini and find the min and max height range.
float minHeight = 0;
float maxHeight = 0;
float heightRange = 0;
bool bUseHeightRangeOverride = true;
float[] normalizedHeights = GetNormalizedHeightmapFromPartWithMinMax(session, geoID, partID,
volumeInfo.xLength, volumeInfo.yLength, ref minHeight, ref maxHeight, ref heightRange,
bUseHeightRangeOverride);
float[,] unityHeights = ConvertHeightMapHoudiniToUnity(heightMapResolution, heightMapResolution, normalizedHeights);
// The terrainData.baseMapResolution is not set here, but rather left to whatever default Unity uses
// The terrainData.alphamapResolution is set later when setting the alphamaps.
if (bNewTerrainData)
{
// 32 is the default for resolutionPerPatch
const int detailResolution = 1024;
const int resolutionPerPatch = 32;
terrainData.SetDetailResolution(detailResolution, 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);
// Note that Unity uses a default height range of 600 when a flat terrain is created.
// Without a non-zero value for the height range, user isn't able to draw heights.
// Therefore, set 600 as the value if height range is currently 0 (due to flat heightfield).
if (heightRange == 0)
{
heightRange = terrainData.size.y > 1 ? terrainData.size.y : 600;
}
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);
// Use y position from attribute if user has set it
float ypos = position.y + minHeight;
float userYPos;
if (HEU_GeneralUtility.GetAttributeFloatSingle(session, geoID, partID,
HEU_Defines.DEFAULT_UNITY_HEIGHTFIELD_YPOS, out userYPos))
{
ypos = userYPos;
}
// TODO: revisit how the position is calculated
volumePositionOffset = new Vector3((terrainSizeX + xmin) * offsetX, ypos, zmin * offsetZ);
// Test position
//volumePositionOffset = new Vector3(xcenter + mapWidth, ycenter, zcenter - mapHeight);
return true;
}
else
{
Debug.LogWarning("Non-heightfield volume type not supported!");
}
return false;
}
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).
// Number of heightfield values
int totalHeightValues = volumeInfo.xLength * volumeInfo.yLength;
// 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);
// The scaled size is the real world size of the terrain in both Houdini and Unity.
// Unity terrain uses this to scale up the height values we set.
int scaledSizeX = Mathf.RoundToInt(volumeInfo.xLength * scale.x) * 2;
int scaledSizeZ = Mathf.RoundToInt(volumeInfo.yLength * scale.z) * 2;
//Debug.LogFormat("HeightField Pos:{0}, Scale:{1}", position, scale);
//Debug.LogFormat("HeightField tileSize:{0}, xLength:{1}, yLength:{2}", volumeInfo.tileSize, volumeInfo.xLength, volumeInfo.yLength);
//Debug.LogFormat("HeightField Scaled Size x:{0}, y:{1}", scaledSizeX, scaledSizeZ);
//Debug.LogFormat("HeightField minX={0}, minY={1}, minZ={2}", volumeInfo.minX, volumeInfo.minY, volumeInfo.minZ);
const int UNITY_MINIMUM_HEIGHTMAP_RESOLUTION = 33;
if (scaledSizeX < UNITY_MINIMUM_HEIGHTMAP_RESOLUTION || scaledSizeZ < 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, scaledSizeX, scaledSizeZ);
return false;
}
int mapWidth = volumeInfo.xLength;
int mapHeight = volumeInfo.yLength;
// Unity terrain requires (though not strictly) a square size that is power of two plus one,
// so we calculate that from the given volumeInfo.xLength and volumeInfo.yLength.
int squareSizePlusOne = mapWidth >= mapHeight ? mapWidth : mapHeight;
if (!Mathf.IsPowerOfTwo(squareSizePlusOne - 1))
{
squareSizePlusOne = Mathf.NextPowerOfTwo(squareSizePlusOne - 1) + 1;
}
//Debug.LogFormat("MAPHEIGHT: {0}, SQUARE: {1}", mapHeight, squareSize);
// If our valid square size is greater than half than the scaled true size, then the mapping will need
// extra padding since we need to go up to the next power of two plus one.
if ((squareSizePlusOne * 2) > scaledSizeX || (squareSizePlusOne * 2) > scaledSizeZ)
{
Debug.LogWarningFormat("The specified heightfield size will require extra padding when converting heightfield to terrain due to Houdini to Unity size differences!"
+ "\nRecommended to use heightfield size that is power of two plus two (eg. 514, 258, 130, 66).");
scaledSizeX = Mathf.RoundToInt(squareSizePlusOne * scale.x) * 2;
scaledSizeZ = Mathf.RoundToInt(squareSizePlusOne * scale.z) * 2;
}
// Get the height values from Houdini and find the min and max height range.
float[] heightValues = new float[totalHeightValues];
bool bResult = session.GetHeightFieldData(geoID, partID, 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 paddingWidth = squareSizePlusOne - mapWidth;
int paddingLeft = Mathf.CeilToInt(paddingWidth * 0.5f);
int paddingRight = squareSizePlusOne - paddingLeft;
//Debug.LogFormat("Padding: Width={0}, Left={1}, Right={2}", paddingWidth, paddingLeft, paddingRight);
int paddingHeight = squareSizePlusOne - mapHeight;
int paddingTop = Mathf.CeilToInt(paddingHeight * 0.5f);
int paddingBottom = squareSizePlusOne - 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[squareSizePlusOne, squareSizePlusOne];
for (int y = 0; y < squareSizePlusOne; ++y)
{
for (int x = 0; x < squareSizePlusOne; ++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 = squareSizePlusOne - (y + 1);
// Unity expects height array indexing to be [y, x].
unityHeights[ix, iy] = f;
}
}
}
terrainData = new TerrainData();
// Heightmap resolution must be square power-of-two plus 1
terrainData.heightmapResolution = squareSizePlusOne;
// TODO: Pull these from plugin settings perhaps?
terrainData.baseMapResolution = 1024;
terrainData.alphamapResolution = 1024;
int detailResolution = squareSizePlusOne - 1;
// 128 is the maximum for resolutionPerPatch
const int resolutionPerPatch = 128;
terrainData.SetDetailResolution(detailResolution, 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(scaledSizeX, heightRange, scaledSizeZ);
Terrain terrain = HEU_GeneralUtility.GetOrCreateComponent<Terrain>(gameObject);
TerrainCollider collider = HEU_GeneralUtility.GetOrCreateComponent<TerrainCollider>(gameObject);
terrain.terrainData = terrainData;
collider.terrainData = terrainData;
terrain.Flush();
// Unity Terrain has origin at bottom left, whereas
// Houdini uses centre of terrain. We'll need to move the terrain half way back in X and half way up in Z
// TODO: revisit to properly get volume position offset when splitting 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)squareSizePlusOne / (float)mapWidth;
float offsetZ = (float)squareSizePlusOne / (float)mapHeight;
volumePositionOffset = new Vector3(-position.x * offsetX, minHeight + position.y, position.z * offsetZ);
return true;
}
else
{
Debug.LogWarning("Non-heightfield volume type not supported!");
}
return false;
}
private void GenerateTerrain(List<HEU_LoadBufferVolume> terrainBuffers)
{
Transform parent = this.gameObject.transform;
int numVolues = terrainBuffers.Count;
for(int t = 0; t < numVolues; ++t)
{
if (terrainBuffers[t]._heightMap != null)
{
GameObject newGameObject = new GameObject("heightfield_" + terrainBuffers[t]._tileIndex);
Transform newTransform = newGameObject.transform;
newTransform.parent = parent;
HEU_GeneratedOutput generatedOutput = new HEU_GeneratedOutput();
generatedOutput._outputData._gameObject = newGameObject;
Terrain terrain = HEU_GeneralUtility.GetOrCreateComponent<Terrain>(newGameObject);
TerrainCollider collider = HEU_GeneralUtility.GetOrCreateComponent<TerrainCollider>(newGameObject);
terrain.terrainData = new TerrainData();
TerrainData terrainData = terrain.terrainData;
collider.terrainData = terrainData;
int heightMapSize = terrainBuffers[t]._heightMapSize;
terrainData.heightmapResolution = heightMapSize;
if (terrainData.heightmapResolution != heightMapSize)
{
Debug.LogErrorFormat("Unsupported terrain size: {0}", heightMapSize);
continue;
}
terrainData.baseMapResolution = heightMapSize;
terrainData.alphamapResolution = heightMapSize;
const int resolutionPerPatch = 128;
terrainData.SetDetailResolution(resolutionPerPatch, resolutionPerPatch);
terrainData.SetHeights(0, 0, terrainBuffers[t]._heightMap);
terrainData.size = new Vector3(terrainBuffers[t]._terrainSizeX, terrainBuffers[t]._heightRange, terrainBuffers[t]._terrainSizeY);
terrain.Flush();
// Set position
HAPI_Transform hapiTransformVolume = new HAPI_Transform(true);
hapiTransformVolume.position[0] += terrainBuffers[t]._position[0];
hapiTransformVolume.position[1] += terrainBuffers[t]._position[1];
hapiTransformVolume.position[2] += terrainBuffers[t]._position[2];
HEU_HAPIUtility.ApplyLocalTransfromFromHoudiniToUnity(ref hapiTransformVolume, newTransform);
// Set layers
Texture2D defaultTexture = HEU_VolumeCache.LoadDefaultSplatTexture();
int numLayers = terrainBuffers[t]._layers.Count;
#if UNITY_2018_3_OR_NEWER
// Create TerrainLayer for each heightfield layer
// Note that at time of this implementation the new Unity terrain
// is still in beta. Therefore, the following layer creation is subject
// to change.
TerrainLayer[] terrainLayers = new TerrainLayer[numLayers];
for (int m = 0; m < numLayers; ++m)
{
terrainLayers[m] = new TerrainLayer();
HEU_LoadBufferVolumeLayer layer = terrainBuffers[t]._layers[m];
if (!string.IsNullOrEmpty(layer._diffuseTexturePath))
{
// Using Resources.Load is much faster than AssetDatabase.Load
//terrainLayers[m].diffuseTexture = HEU_MaterialFactory.LoadTexture(layer._diffuseTexturePath);
terrainLayers[m].diffuseTexture = Resources.Load<Texture2D>(layer._diffuseTexturePath);
}
if (terrainLayers[m].diffuseTexture == null)
{
terrainLayers[m].diffuseTexture = defaultTexture;
}
terrainLayers[m].diffuseRemapMin = Vector4.zero;
terrainLayers[m].diffuseRemapMax = Vector4.one;
if (!string.IsNullOrEmpty(layer._maskTexturePath))
{
// Using Resources.Load is much faster than AssetDatabase.Load
//terrainLayers[m].maskMapTexture = HEU_MaterialFactory.LoadTexture(layer._maskTexturePath);
terrainLayers[m].maskMapTexture = Resources.Load<Texture2D>(layer._maskTexturePath);
}
terrainLayers[m].maskMapRemapMin = Vector4.zero;
terrainLayers[m].maskMapRemapMax = Vector4.one;
terrainLayers[m].metallic = layer._metallic;
if (!string.IsNullOrEmpty(layer._normalTexturePath))
{
terrainLayers[m].normalMapTexture = HEU_MaterialFactory.LoadTexture(layer._normalTexturePath);
}
terrainLayers[m].normalScale = layer._normalScale;
terrainLayers[m].smoothness = layer._smoothness;
terrainLayers[m].specular = layer._specularColor;
terrainLayers[m].tileOffset = layer._tileOffset;
if (layer._tileSize.magnitude == 0f && terrainLayers[m].diffuseTexture != null)
{
// Use texture size if tile size is 0
layer._tileSize = new Vector2(terrainLayers[m].diffuseTexture.width, terrainLayers[m].diffuseTexture.height);
}
terrainLayers[m].tileSize = layer._tileSize;
}
terrainData.terrainLayers = terrainLayers;
#else
// Need to create SplatPrototype for each layer in heightfield, representing the textures.
SplatPrototype[] splatPrototypes = new SplatPrototype[numLayers];
for (int m = 0; m < numLayers; ++m)
{
splatPrototypes[m] = new SplatPrototype();
HEU_LoadBufferVolumeLayer layer = terrainBuffers[t]._layers[m];
Texture2D diffuseTexture = null;
if (!string.IsNullOrEmpty(layer._diffuseTexturePath))
{
diffuseTexture = HEU_MaterialFactory.LoadTexture(layer._diffuseTexturePath);
}
if (diffuseTexture == null)
{
diffuseTexture = defaultTexture;
}
splatPrototypes[m].texture = diffuseTexture;
splatPrototypes[m].tileOffset = layer._tileOffset;
if (layer._tileSize.magnitude == 0f && diffuseTexture != null)
{
// Use texture size if tile size is 0
layer._tileSize = new Vector2(diffuseTexture.width, diffuseTexture.height);
}
splatPrototypes[m].tileSize = layer._tileSize;
splatPrototypes[m].metallic = layer._metallic;
splatPrototypes[m].smoothness = layer._smoothness;
if (!string.IsNullOrEmpty(layer._normalTexturePath))
{
splatPrototypes[m].normalMap = HEU_MaterialFactory.LoadTexture(layer._normalTexturePath);
}
}
terrainData.splatPrototypes = splatPrototypes;
#endif
terrainData.SetAlphamaps(0, 0, terrainBuffers[t]._splatMaps);
//string assetPath = HEU_AssetDatabase.CreateAssetCacheFolder("terrainData");
//AssetDatabase.CreateAsset(terrainData, assetPath);
//Debug.Log("Created asset data at " + assetPath);
terrainBuffers[t]._generatedOutput = generatedOutput;
_generatedOutputs.Add(generatedOutput);
SetOutputVisiblity(terrainBuffers[t]);
}
}
}
public static bool GenerateMeshUsingGeoCache(HEU_SessionBase session, HEU_HoudiniAsset asset, GameObject gameObject,
HEU_GenerateGeoCache geoCache, bool bGenerateUVs, bool bGenerateTangents, bool bPartInstanced)
{
#if HEU_PROFILER_ON
float generateMeshTime = Time.realtimeSinceStartup;
#endif
string collisionGroupName = HEU_PluginSettings.CollisionGroupName;
string renderCollisionGroupName = HEU_PluginSettings.RenderedCollisionGroupName;
// Stores submesh data based on material key (ie. a submesh for each unique material)
// Unity requires that if using multiple materials in the same GameObject, then we
// need to create corresponding number of submeshes as materials.
// So we'll create a submesh for each material in use.
// Each submesh will have a list of vertices and their attributes which
// we'll collect in a helper class (HEU_MeshData).
// Once we collected all the submesh data, we create a CombineInstance for each
// submesh, then combine it while perserving the submeshes.
Dictionary<int, HEU_MeshData> subMeshesMap = new Dictionary<int, HEU_MeshData>();
string defaultMaterialName = HEU_HoudiniAsset.GenerateDefaultMaterialName(geoCache.GeoID, geoCache.PartID);
int defaultMaterialKey = HEU_MaterialFactory.MaterialNameToKey(defaultMaterialName);
int singleFaceUnityMaterialKey = HEU_Defines.HEU_INVALID_MATERIAL;
int singleFaceHoudiniMaterialKey = HEU_Defines.HEU_INVALID_MATERIAL;
// Now go through each group data and acquire the vertex data.
// We'll create the collider mesh rightaway and assign to the gameobject.
int numCollisionMeshes = 0;
foreach (KeyValuePair<string, int[]> groupSplitFacesPair in geoCache._groupSplitVertexIndices)
{
string groupName = groupSplitFacesPair.Key;
int[] groupVertexList = groupSplitFacesPair.Value;
bool bIsCollidable = groupName.Contains(collisionGroupName);
bool bIsRenderCollidable = groupName.Contains(renderCollisionGroupName);
if (bIsCollidable || bIsRenderCollidable)
{
if (numCollisionMeshes > 0)
{
Debug.LogWarningFormat("More than 1 collision mesh detected for part {0}.\nOnly a single collision mesh is supported per part.", geoCache._partName);
}
if (geoCache._partInfo.type == HAPI_PartType.HAPI_PARTTYPE_BOX)
{
// Box collider
HAPI_BoxInfo boxInfo = new HAPI_BoxInfo();
if (session.GetBoxInfo(geoCache.GeoID, geoCache.PartID, ref boxInfo))
{
BoxCollider boxCollider = HEU_GeneralUtility.GetOrCreateComponent<BoxCollider>(gameObject);
boxCollider.center = new Vector3(-boxInfo.center[0], boxInfo.center[1], boxInfo.center[2]);
boxCollider.size = new Vector3(boxInfo.size[0] * 2f, boxInfo.size[1] * 2f, boxInfo.size[2] * 2f);
// TODO: Should we apply the box info rotation here to the box collider?
// If so, it should be in its own gameobject?
}
}
else if (geoCache._partInfo.type == HAPI_PartType.HAPI_PARTTYPE_SPHERE)
{
// Sphere collider
HAPI_SphereInfo sphereInfo = new HAPI_SphereInfo();
if (session.GetSphereInfo(geoCache.GeoID, geoCache.PartID, ref sphereInfo))
{
SphereCollider sphereCollider = HEU_GeneralUtility.GetOrCreateComponent<SphereCollider>(gameObject);
sphereCollider.center = new Vector3(-sphereInfo.center[0], sphereInfo.center[1], sphereInfo.center[2]);
sphereCollider.radius = sphereInfo.radius;
}
}
else
{
// Mesh collider
List<Vector3> collisionVertices = new List<Vector3>();
for (int v = 0; v < groupVertexList.Length; ++v)
{
int index = groupVertexList[v];
if (index >= 0 && index < geoCache._posAttr.Length)
{
collisionVertices.Add(new Vector3(-geoCache._posAttr[index * 3], geoCache._posAttr[index * 3 + 1], geoCache._posAttr[index * 3 + 2]));
}
}
int[] collisionIndices = new int[collisionVertices.Count];
for (int i = 0; i < collisionIndices.Length; ++i)
{
collisionIndices[i] = i;
}
Mesh collisionMesh = new Mesh();
#if UNITY_2017_3_OR_NEWER
collisionMesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
#endif
collisionMesh.name = groupName;
collisionMesh.vertices = collisionVertices.ToArray();
collisionMesh.triangles = collisionIndices;
collisionMesh.RecalculateBounds();
MeshCollider meshCollider = HEU_GeneralUtility.GetOrCreateComponent<MeshCollider>(gameObject);
meshCollider.sharedMesh = collisionMesh;
}
numCollisionMeshes++;
}
if (bIsCollidable && !bIsRenderCollidable)
{
continue;
}
// After this point, we'll be only processing renderable geometry
// Transfer indices for each attribute from the single large list into group lists
float[] groupColorAttr = new float[0];
HEU_GenerateGeoCache.TransferRegularPointAttributesToVertices(groupVertexList, ref geoCache._colorAttrInfo, geoCache._colorAttr, ref groupColorAttr);
float[] groupAlphaAttr = new float[0];
HEU_GenerateGeoCache.TransferRegularPointAttributesToVertices(groupVertexList, ref geoCache._alphaAttrInfo, geoCache._alphaAttr, ref groupAlphaAttr);
float[] groupNormalAttr = new float[0];
HEU_GenerateGeoCache.TransferRegularPointAttributesToVertices(groupVertexList, ref geoCache._normalAttrInfo, geoCache._normalAttr, ref groupNormalAttr);
float[] groupTangentsAttr = new float[0];
HEU_GenerateGeoCache.TransferRegularPointAttributesToVertices(groupVertexList, ref geoCache._tangentAttrInfo, geoCache._tangentAttr, ref groupTangentsAttr);
float[] groupUVAttr = new float[0];
HEU_GenerateGeoCache.TransferRegularPointAttributesToVertices(groupVertexList, ref geoCache._uvAttrInfo, geoCache._uvAttr, ref groupUVAttr);
float[] groupUV2Attr = new float[0];
HEU_GenerateGeoCache.TransferRegularPointAttributesToVertices(groupVertexList, ref geoCache._uv2AttrInfo, geoCache._uv2Attr, ref groupUV2Attr);
float[] groupUV3Attr = new float[0];
HEU_GenerateGeoCache.TransferRegularPointAttributesToVertices(groupVertexList, ref geoCache._uv3AttrInfo, geoCache._uv3Attr, ref groupUV3Attr);
// Unity mesh creation requires # of vertices must equal # of attributes (color, normal, uvs).
// HAPI gives us point indices. Since our attributes are via vertex, we need to therefore
// create new indices of vertices that correspond to our attributes.
// To reindex, we go through each index, add each attribute corresponding to that index to respective lists.
// Then we set the index of where we added those attributes as the new index.
int numIndices = groupVertexList.Length;
for (int vertexIndex = 0; vertexIndex < numIndices; vertexIndex += 3)
{
// groupVertexList contains -1 for unused indices, and > 0 for used
if (groupVertexList[vertexIndex] == -1)
{
continue;
}
int faceIndex = vertexIndex / 3;
int faceMaterialID = geoCache._houdiniMaterialIDs[faceIndex];
// Get the submesh ID for this face. Depends on whether it is a Houdini or Unity material.
// Using default material as failsafe
int submeshID = HEU_Defines.HEU_INVALID_MATERIAL;
if (geoCache._unityMaterialAttrInfo.exists)
{
// This face might have a Unity or Substance material attribute.
// Formulate the submesh ID by combining the material attributes.
if (geoCache._singleFaceUnityMaterial)
{
if (singleFaceUnityMaterialKey == HEU_Defines.HEU_INVALID_MATERIAL && geoCache._unityMaterialInfos.Count > 0)
{
// Use first material
var unityMaterialMapEnumerator = geoCache._unityMaterialInfos.GetEnumerator();
if (unityMaterialMapEnumerator.MoveNext())
{
singleFaceUnityMaterialKey = unityMaterialMapEnumerator.Current.Key;
}
}
submeshID = singleFaceUnityMaterialKey;
}
else
{
int attrIndex = faceIndex;
if (geoCache._unityMaterialAttrInfo.owner == HAPI_AttributeOwner.HAPI_ATTROWNER_PRIM || geoCache._unityMaterialAttrInfo.owner == HAPI_AttributeOwner.HAPI_ATTROWNER_POINT)
{
if (geoCache._unityMaterialAttrInfo.owner == HAPI_AttributeOwner.HAPI_ATTROWNER_POINT)
{
attrIndex = groupVertexList[vertexIndex];
}
string unityMaterialName = "";
string substanceName = "";
int substanceIndex = -1;
submeshID = HEU_GenerateGeoCache.GetMaterialKeyFromAttributeIndex(geoCache, attrIndex, out unityMaterialName, out substanceName, out substanceIndex);
}
else
{
// (geoCache._unityMaterialAttrInfo.owner == HAPI_AttributeOwner.HAPI_ATTROWNER_DETAIL) should have been handled as geoCache._singleFaceMaterial above
Debug.LogErrorFormat("Unity material attribute not supported for attribute type {0}!", geoCache._unityMaterialAttrInfo.owner);
}
}
}
if (submeshID == HEU_Defines.HEU_INVALID_MATERIAL)
{
// Check if has Houdini material assignment
if (geoCache._houdiniMaterialIDs.Length > 0)
{
if (geoCache._singleFaceHoudiniMaterial)
{
if (singleFaceHoudiniMaterialKey == HEU_Defines.HEU_INVALID_MATERIAL)
{
singleFaceHoudiniMaterialKey = geoCache._houdiniMaterialIDs[0];
}
submeshID = singleFaceHoudiniMaterialKey;
}
else if (faceMaterialID > 0)
{
submeshID = faceMaterialID;
}
}
if (submeshID == HEU_Defines.HEU_INVALID_MATERIAL)
{
// Use default material
submeshID = defaultMaterialKey;
}
}
if (!subMeshesMap.ContainsKey(submeshID))
{
// New submesh
subMeshesMap.Add(submeshID, new HEU_MeshData());
}
HEU_MeshData subMeshData = subMeshesMap[submeshID];
for (int triIndex = 0; triIndex < 3; ++triIndex)
{
int vertexTriIndex = vertexIndex + triIndex;
int positionIndex = groupVertexList[vertexTriIndex];
// Position
Vector3 position = new Vector3(-geoCache._posAttr[positionIndex * 3 + 0], geoCache._posAttr[positionIndex * 3 + 1], geoCache._posAttr[positionIndex * 3 + 2]);
subMeshData._vertices.Add(position);
// Color
if (geoCache._colorAttrInfo.exists)
{
Color tempColor = new Color();
tempColor.r = Mathf.Clamp01(groupColorAttr[vertexTriIndex * geoCache._colorAttrInfo.tupleSize + 0]);
tempColor.g = Mathf.Clamp01(groupColorAttr[vertexTriIndex * geoCache._colorAttrInfo.tupleSize + 1]);
tempColor.b = Mathf.Clamp01(groupColorAttr[vertexTriIndex * geoCache._colorAttrInfo.tupleSize + 2]);
if (geoCache._alphaAttrInfo.exists)
{
tempColor.a = Mathf.Clamp01(groupAlphaAttr[vertexTriIndex]);
}
else if (geoCache._colorAttrInfo.tupleSize == 4)
{
tempColor.a = Mathf.Clamp01(groupColorAttr[vertexTriIndex * geoCache._colorAttrInfo.tupleSize + 3]);
}
else
{
tempColor.a = 1f;
}
subMeshData._colors.Add(tempColor);
}
else
{
subMeshData._colors.Add(Color.white);
}
// Normal
if (vertexTriIndex < groupNormalAttr.Length)
{
// Flip the x
Vector3 normal = new Vector3(-groupNormalAttr[vertexTriIndex * 3 + 0], groupNormalAttr[vertexTriIndex * 3 + 1], groupNormalAttr[vertexTriIndex * 3 + 2]);
subMeshData._normals.Add(normal);
}
else
{
// We'll be calculating normals later
subMeshData._normals.Add(Vector3.zero);
}
// UV1
if (vertexTriIndex < groupUVAttr.Length)
{
Vector2 uv = new Vector2(groupUVAttr[vertexTriIndex * 2 + 0], groupUVAttr[vertexTriIndex * 2 + 1]);
subMeshData._UVs.Add(uv);
}
// UV2
if (vertexTriIndex < groupUV2Attr.Length)
{
Vector2 uv = new Vector2(groupUV2Attr[vertexTriIndex * 2 + 0], groupUV2Attr[vertexTriIndex * 2 + 1]);
subMeshData._UV2s.Add(uv);
}
// UV3
if (vertexTriIndex < groupUV3Attr.Length)
{
Vector2 uv = new Vector2(groupUV3Attr[vertexTriIndex * 2 + 0], groupUV3Attr[vertexTriIndex * 2 + 1]);
subMeshData._UV3s.Add(uv);
}
// Tangents
if (bGenerateTangents && vertexTriIndex < groupTangentsAttr.Length)
{
Vector4 tangent = Vector4.zero;
if (geoCache._tangentAttrInfo.tupleSize == 4)
{
tangent = new Vector4(-groupTangentsAttr[vertexTriIndex * 4 + 0], groupTangentsAttr[vertexTriIndex * 4 + 1], groupTangentsAttr[vertexTriIndex * 4 + 2], groupTangentsAttr[vertexTriIndex * 4 + 3]);
}
else if (geoCache._tangentAttrInfo.tupleSize == 3)
{
tangent = new Vector4(-groupTangentsAttr[vertexTriIndex * 3 + 0], groupTangentsAttr[vertexTriIndex * 3 + 1], groupTangentsAttr[vertexTriIndex * 3 + 2], 1);
}
subMeshData._tangents.Add(tangent);
}
subMeshData._indices.Add(subMeshData._vertices.Count - 1);
//Debug.LogFormat("Submesh index mat {0} count {1}", faceMaterialID, subMeshData._indices.Count);
}
if (!geoCache._normalAttrInfo.exists)
{
// To generate normals after all the submeshes have been defined, we
// calculate and store each triangle normal, along with the list
// of connected vertices for each vertex
int triIndex = subMeshData._indices.Count - 3;
int i1 = subMeshData._indices[triIndex + 0];
int i2 = subMeshData._indices[triIndex + 1];
int i3 = subMeshData._indices[triIndex + 2];
// Triangle normal
Vector3 p1 = subMeshData._vertices[i2] - subMeshData._vertices[i1];
Vector3 p2 = subMeshData._vertices[i3] - subMeshData._vertices[i1];
Vector3 normal = Vector3.Cross(p1, p2).normalized;
subMeshData._triangleNormals.Add(normal);
int normalIndex = subMeshData._triangleNormals.Count - 1;
// Connected vertices
geoCache._sharedNormalIndices[groupVertexList[vertexIndex + 0]].Add(new VertexEntry(submeshID, i1, normalIndex));
geoCache._sharedNormalIndices[groupVertexList[vertexIndex + 1]].Add(new VertexEntry(submeshID, i2, normalIndex));
geoCache._sharedNormalIndices[groupVertexList[vertexIndex + 2]].Add(new VertexEntry(submeshID, i3, normalIndex));
}
}
}
int numSubmeshes = subMeshesMap.Keys.Count;
bool bGenerated = false;
if (numSubmeshes > 0)
{
if (!geoCache._normalAttrInfo.exists)
{
// Normal calculation
// Go throuch each vertex for the entire geometry and calculate the normal vector based on connected
// vertices. This includes vertex connections between submeshes so we should get smooth transitions across submeshes.
int numSharedNormals = geoCache._sharedNormalIndices.Length;
for (int a = 0; a < numSharedNormals; ++a)
{
for (int b = 0; b < geoCache._sharedNormalIndices[a].Count; ++b)
{
Vector3 sumNormal = new Vector3();
VertexEntry leftEntry = geoCache._sharedNormalIndices[a][b];
HEU_MeshData leftSubMesh = subMeshesMap[leftEntry._meshKey];
List<VertexEntry> rightList = geoCache._sharedNormalIndices[a];
for (int c = 0; c < rightList.Count; ++c)
{
VertexEntry rightEntry = rightList[c];
HEU_MeshData rightSubMesh = subMeshesMap[rightEntry._meshKey];
if (leftEntry._vertexIndex == rightEntry._vertexIndex)
{
sumNormal += rightSubMesh._triangleNormals[rightEntry._normalIndex];
}
else
{
float dot = Vector3.Dot(leftSubMesh._triangleNormals[leftEntry._normalIndex],
rightSubMesh._triangleNormals[rightEntry._normalIndex]);
if (dot >= geoCache._cosineThreshold)
{
sumNormal += rightSubMesh._triangleNormals[rightEntry._normalIndex];
}
}
}
leftSubMesh._normals[leftEntry._vertexIndex] = sumNormal.normalized;
}
}
}
// Go through each valid submesh data and upload into a CombineInstance for combining.
// Each CombineInstance represents a submesh in the final mesh.
// And each submesh in that final mesh corresponds to a material.
// Filter out only the submeshes with valid geometry
List<Material> validMaterials = new List<Material>();
List<int> validSubmeshes = new List<int>();
Dictionary<int, HEU_MaterialData> assetMaterialMap = asset.GetMaterialDataMap();
foreach (KeyValuePair<int, HEU_MeshData> meshPair in subMeshesMap)
{
HEU_MeshData meshData = meshPair.Value;
if (meshData._indices.Count > 0)
{
int materialKey = meshPair.Key;
// Find the material or create it
HEU_MaterialData materialData = null;
HEU_UnityMaterialInfo unityMaterialInfo = null;
if (geoCache._unityMaterialInfos.TryGetValue(materialKey, out unityMaterialInfo))
{
if (!assetMaterialMap.TryGetValue(materialKey, out materialData))
{
// Create the material
materialData = asset.CreateUnitySubstanceMaterialData(materialKey, unityMaterialInfo._unityMaterialPath, unityMaterialInfo._substancePath, unityMaterialInfo._substanceIndex);
assetMaterialMap.Add(materialData._materialKey, materialData);
}
}
else if (!assetMaterialMap.TryGetValue(materialKey, out materialData))
{
if (materialKey == defaultMaterialKey)
{
materialData = asset.GetOrCreateDefaultMaterialInCache(session, geoCache.GeoID, geoCache.PartID, false);
}
else
{
materialData = asset.CreateHoudiniMaterialData(session, materialKey, geoCache.GeoID, geoCache.PartID);
}
}
if (materialData != null)
{
validSubmeshes.Add(meshPair.Key);
validMaterials.Add(materialData._material);
if (materialData != null && bPartInstanced)
{
// Handle GPU instancing on material for instanced meshes
if (materialData._materialSource != HEU_MaterialData.Source.UNITY && materialData._materialSource != HEU_MaterialData.Source.SUBSTANCE)
{
// Always enable GPU instancing for material generated from Houdini
HEU_MaterialFactory.EnableGPUInstancing(materialData._material);
}
}
}
}
}
int validNumSubmeshes = validSubmeshes.Count;
CombineInstance[] meshCombiner = new CombineInstance[validNumSubmeshes];
for (int submeshIndex = 0; submeshIndex < validNumSubmeshes; ++submeshIndex)
{
HEU_MeshData submesh = subMeshesMap[validSubmeshes[submeshIndex]];
CombineInstance combine = new CombineInstance();
combine.mesh = new Mesh();
#if UNITY_2017_3_OR_NEWER
combine.mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
#endif
combine.mesh.SetVertices(submesh._vertices);
combine.mesh.SetIndices(submesh._indices.ToArray(), MeshTopology.Triangles, 0);
if (submesh._colors.Count > 0)
{
combine.mesh.SetColors(submesh._colors);
}
if (submesh._normals.Count > 0)
{
combine.mesh.SetNormals(submesh._normals);
}
if (submesh._tangents.Count > 0)
{
combine.mesh.SetTangents(submesh._tangents);
}
if (bGenerateUVs)
{
// TODO: revisit to test this out
Vector2[] generatedUVs = HEU_GeometryUtility.GeneratePerTriangle(combine.mesh);
if (generatedUVs != null)
{
combine.mesh.uv = generatedUVs;
}
}
else if (submesh._UVs.Count > 0)
{
combine.mesh.SetUVs(0, submesh._UVs);
}
if (submesh._UV2s.Count > 0)
{
combine.mesh.SetUVs(1, submesh._UV2s);
}
if (submesh._UV3s.Count > 0)
{
combine.mesh.SetUVs(2, submesh._UV3s);
}
combine.transform = Matrix4x4.identity;
combine.mesh.RecalculateBounds();
//Debug.LogFormat("Number of submeshes {0}", combine.mesh.subMeshCount);
meshCombiner[submeshIndex] = combine;
}
// Geometry data
MeshFilter meshFilter = HEU_GeneralUtility.GetOrCreateComponent<MeshFilter>(gameObject);
meshFilter.sharedMesh = new Mesh();
#if UNITY_2017_3_OR_NEWER
meshFilter.sharedMesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
#endif
meshFilter.sharedMesh.name = geoCache._partName + "_mesh";
meshFilter.sharedMesh.CombineMeshes(meshCombiner, false, false);
meshFilter.sharedMesh.RecalculateBounds();
if (!geoCache._tangentAttrInfo.exists && bGenerateTangents)
{
HEU_GeometryUtility.CalculateMeshTangents(meshFilter.sharedMesh);
}
meshFilter.sharedMesh.UploadMeshData(true);
// Render data
MeshRenderer meshRenderer = HEU_GeneralUtility.GetOrCreateComponent<MeshRenderer>(gameObject);
meshRenderer.sharedMaterials = validMaterials.ToArray();
bGenerated = true;
}
#if HEU_PROFILER_ON
Debug.LogFormat("GENERATE MESH TIME:: {0}", (Time.realtimeSinceStartup - generateMeshTime));
#endif
return bGenerated;
}
