public bool ApplyPreset(HEU_VolumeCachePreset volumeCachePreset)
{
UIExpanded = volumeCachePreset._uiExpanded;
// Load the TerrainData if the path is given
//Debug.Log("Get terraindata path: " + volumeCachePreset._terrainDataPath);
if (!string.IsNullOrEmpty(volumeCachePreset._terrainDataPath))
{
_terrainData = HEU_AssetDatabase.LoadAssetAtPath(volumeCachePreset._terrainDataPath, typeof(TerrainData)) as TerrainData;
//Debug.Log("Loaded terrain? " + (_terrainData != null ? "yes" : "no"));
}
foreach (HEU_VolumeLayerPreset layerPreset in volumeCachePreset._volumeLayersPresets)
{
HEU_VolumeLayer layer = GetLayer(layerPreset._layerName);
if (layer == null)
{
Debug.LogWarningFormat("Volume layer with name {0} not found! Unable to set heightfield layer preset.", layerPreset._layerName);
return false;
}
layer._strength = layerPreset._strength;
layer._tile = layerPreset._tile;
layer._uiExpanded = layerPreset._uiExpanded;
}
IsDirty = true;
return true;
}
/// <summary>
/// Loads texture at path which should be under a Resources/ folder.
/// </summary>
/// <param name="path">Path to texture, must be relative to a Resources/ folder.</param>
/// <returns>Loaded texture or null if failed.</returns>
public static Texture2D LoadTexture(string path)
{
if(HEU_AssetDatabase.IsPathRelativeToAssets(path) || System.IO.Path.IsPathRooted(path))
{
HEU_AssetDatabase.ImportAsset(path, HEU_AssetDatabase.HEU_ImportAssetOptions.Default);
return HEU_AssetDatabase.LoadAssetAtPath(path, typeof(Texture2D)) as Texture2D;
}
else
{
// Try as relative path to Resources
return Resources.Load<Texture2D>(path);
}
}
public static Texture2D RenderAndExtractImageToTexture(HEU_SessionBase session, HAPI_MaterialInfo materialInfo, HAPI_ParmId textureParmID, string textureName, string assetCacheFolderPath)
{
//Debug.LogFormat("Rendering texture {0} with name {1} for material {2} at path {3}", textureParmID, textureName, materialInfo.nodeId, assetCacheFolderPath);
Texture2D texture = null;
// First we get Houdini to render the texture to an image buffer, then query the buffer over HAPI
// Next we convert to PNG, and write out to file in our Assets directory
// The reason for querying as a buffer is to workaround a bug with ExtractHoudiniImageToTextureFile
// Note: intentionly ignoring any errors as sometimes there aren't any textures
if (session.RenderTextureToImage(materialInfo.nodeId, textureParmID, false))
{
texture = HEU_MaterialFactory.ExtractHoudiniImageToTextureRaw(session, materialInfo, "C A");
if(texture != null)
{
texture.name = textureName;
// Get the Textures folder in the assetCacheFolderPath. Make sure it exists.
assetCacheFolderPath = HEU_AssetDatabase.AppendTexturesPathToAssetFolder(assetCacheFolderPath);
HEU_AssetDatabase.CreatePathWithFolders(assetCacheFolderPath);
// We are defaulting to PNG here if no extension already set. This forces it to use PNG format below.
if (!textureName.EndsWith(".png") && !textureName.EndsWith(".jpg"))
{
textureName = textureName + ".png";
}
string textureFileName = HEU_Platform.BuildPath(assetCacheFolderPath, string.Format("{0}", textureName));
byte[] encodedBytes;
if(textureName.EndsWith(".jpg"))
{
encodedBytes = texture.EncodeToJPG();
}
else // Use PNG otherwise
{
encodedBytes = texture.EncodeToPNG();
}
HEU_Platform.WriteBytes(textureFileName, encodedBytes);
// Re-import for project to recognize the new texture file
HEU_AssetDatabase.ImportAsset(textureFileName, HEU_AssetDatabase.HEU_ImportAssetOptions.Default);
// Load the new texture file
texture = HEU_AssetDatabase.LoadAssetAtPath(textureFileName, typeof(Texture2D)) as Texture2D;
}
//texture = HEU_MaterialFactory.ExtractHoudiniImageToTextureFile(session, materialInfo, "C A", assetCacheFolderPath);
}
return texture;
}
/// <summary>
/// Apply the cached scatter prototypes and instances to the given TerrainData.
/// </summary>
public static void ApplyScatterTrees(TerrainData terrainData, HEU_VolumeScatterTrees scatterTrees)
{
#if UNITY_2019_1_OR_NEWER
if (scatterTrees == null || scatterTrees._treePrototypInfos == null || scatterTrees._treePrototypInfos.Count == 0)
{
return;
}
// Load and set TreePrototypes
GameObject prefabGO;
List<TreePrototype> treePrototypes = new List<TreePrototype>();
for (int i = 0; i < scatterTrees._treePrototypInfos.Count; ++i)
{
prefabGO = HEU_AssetDatabase.LoadAssetAtPath(scatterTrees._treePrototypInfos[i]._prefabPath, typeof(GameObject)) as GameObject;
if (prefabGO != null)
{
TreePrototype prototype = new TreePrototype();
prototype.prefab = prefabGO;
prototype.bendFactor = scatterTrees._treePrototypInfos[i]._bendfactor;
treePrototypes.Add(prototype);
//Debug.LogFormat("Added Tree Prototype: {0} - {1}", scatterTrees._treePrototypInfos[i]._prefabPath, scatterTrees._treePrototypInfos[i]._bendfactor);
}
}
terrainData.treePrototypes = treePrototypes.ToArray();
terrainData.RefreshPrototypes();
if (scatterTrees._positions != null && scatterTrees._positions.Length > 0
&& scatterTrees._prototypeIndices != null && scatterTrees._prototypeIndices.Length == scatterTrees._positions.Length)
{
TreeInstance[] treeInstances = new TreeInstance[scatterTrees._positions.Length];
for (int i = 0; i < scatterTrees._positions.Length; ++i)
{
treeInstances[i] = new TreeInstance();
treeInstances[i].color = scatterTrees._colors != null ? scatterTrees._colors[i] : new Color32(255, 255, 255, 255);
treeInstances[i].heightScale = scatterTrees._heightScales != null ? scatterTrees._heightScales[i] : 1f;
treeInstances[i].lightmapColor = scatterTrees._lightmapColors != null ? scatterTrees._lightmapColors[i] : new Color32(255, 255, 255, 255);
treeInstances[i].position = scatterTrees._positions[i];
treeInstances[i].prototypeIndex = scatterTrees._prototypeIndices[i];
treeInstances[i].rotation = scatterTrees._rotations[i];
treeInstances[i].widthScale = scatterTrees._widthScales != null ? scatterTrees._widthScales[i] : 1f;
}
terrainData.SetTreeInstances(treeInstances, true);
}
#endif
}
public static Material LoadUnityMaterial(string materialPath)
{
if(materialPath.StartsWith(HEU_Defines.DEFAULT_UNITY_BUILTIN_RESOURCES))
{
return HEU_AssetDatabase.LoadUnityAssetFromUniqueAssetPath<Material>(materialPath);
}
else if (materialPath.StartsWith("Packages/"))
{
return HEU_AssetDatabase.LoadAssetAtPath(materialPath, typeof(Material)) as Material;
}
string relativePath = materialPath;
if (relativePath.StartsWith(Application.dataPath))
{
// If absolute path, change to relative path
relativePath = HEU_AssetDatabase.GetAssetRelativePath(materialPath);
}
Material material = null;
string mainPath = null;
string subPath = null;
HEU_AssetDatabase.GetSubAssetPathFromPath(relativePath, out mainPath, out subPath);
if(subPath != null)
{
// This is a subasset. Need to find it by first loading the main asset.
Object subObject = HEU_AssetDatabase.LoadSubAssetAtPath(mainPath, subPath);
if(subObject != null)
{
material = subObject as Material;
}
}
else
{
// Try loading from Resources first
material = Resources.Load<Material>(relativePath) as Material;
if (material == null)
{
// If not in Resources, try loading from project
HEU_AssetDatabase.ImportAsset(relativePath, HEU_AssetDatabase.HEU_ImportAssetOptions.Default);
material = HEU_AssetDatabase.LoadAssetAtPath(relativePath, typeof(Material)) as Material;
}
}
return material;
}
public static Texture2D ExtractHoudiniImageToTextureFile(HEU_SessionBase session, HAPI_MaterialInfo materialInfo, string imagePlanes, string assetCacheFolderPath)
{
Texture2D textureResult = null;
// Get the Textures folder in the assetCacheFolderPath. Make sure it exists.
assetCacheFolderPath = HEU_AssetDatabase.AppendTexturesPathToAssetFolder(assetCacheFolderPath);
HEU_AssetDatabase.CreatePathWithFolders(assetCacheFolderPath);
// Need to pass in full path to Houdini to write out the file
assetCacheFolderPath = HEU_AssetDatabase.GetAssetFullPath(assetCacheFolderPath);
if (assetCacheFolderPath == null)
{
return textureResult;
}
HAPI_ImageInfo imageInfo = new HAPI_ImageInfo();
if (!session.GetImageInfo(materialInfo.nodeId, ref imageInfo))
{
return textureResult;
}
// This will return null if the current imageInfo file format is supported by Unity, otherwise
// returns a Unity supported file format.
string desiredFileFormatName = HEU_MaterialData.GetSupportedFileFormat(session, ref imageInfo);
// Extract image to file
string writtenFilePath = null;
if (!session.ExtractImageToFile(materialInfo.nodeId, desiredFileFormatName, imagePlanes, assetCacheFolderPath, out writtenFilePath))
{
return textureResult;
}
HEU_AssetDatabase.SaveAndRefreshDatabase();
// Convert full path back to relative in order to work with AssetDatabase
string assetRelativePath = HEU_AssetDatabase.GetAssetRelativePath(writtenFilePath);
// Re-import to refresh the project
HEU_AssetDatabase.ImportAsset(assetRelativePath, HEU_AssetDatabase.HEU_ImportAssetOptions.Default);
textureResult = HEU_AssetDatabase.LoadAssetAtPath(assetRelativePath, typeof(Texture2D)) as Texture2D;
//Debug.LogFormat("Loaded texture to file {0} with format {1}", writtenFilePath, textureResult != null ? textureResult.format.ToString() : "none");
return textureResult;
}
public static Material LoadUnityMaterial(string materialPath)
{
if(materialPath.StartsWith(HEU_Defines.DEFAULT_UNITY_BUILTIN_RESOURCES))
{
return HEU_AssetDatabase.LoadUnityAssetFromUniqueAssetPath<Material>(materialPath);
}
string relativePath = materialPath;
if (relativePath.StartsWith(Application.dataPath))
{
// If absolute path, change to relative path
relativePath = HEU_AssetDatabase.GetAssetRelativePath(materialPath);
}
// Try loading from Resources first
Material material = Resources.Load<Material>(relativePath) as Material;
if(material == null)
{
// If not in Resources, try loading from project
HEU_AssetDatabase.ImportAsset(relativePath, HEU_AssetDatabase.HEU_ImportAssetOptions.Default);
material = HEU_AssetDatabase.LoadAssetAtPath(relativePath, typeof(Material)) as Material;
}
return material;
}
public void LoadPreset(HEU_SessionBase session, HEU_InputPreset inputPreset)
{
ResetInputNode(session);
ChangeInputType(session, inputPreset._inputObjectType);
if (inputPreset._inputObjectType == InputObjectType.UNITY_MESH)
{
bool bSet = false;
int numObjects = inputPreset._inputObjectPresets.Count;
for (int i = 0; i < numObjects; ++i)
{
bSet = false;
if (!string.IsNullOrEmpty(inputPreset._inputObjectPresets[i]._gameObjectName))
{
GameObject inputGO = null;
if (inputPreset._inputObjectPresets[i]._isSceneObject)
{
inputGO = HEU_GeneralUtility.GetGameObjectByNameInScene(inputPreset._inputObjectPresets[i]._gameObjectName);
}
else
{
// Use the _gameObjectName as path to find in scene
inputGO = HEU_AssetDatabase.LoadAssetAtPath(inputPreset._inputObjectPresets[i]._gameObjectName, typeof(GameObject)) as GameObject;
if (inputGO == null)
{
Debug.LogErrorFormat("Unable to find input at {0}", inputPreset._inputObjectPresets[i]._gameObjectName);
}
}
if (inputGO != null)
{
HEU_InputObjectInfo inputObject = InternalAddInputObjectAtEnd(inputGO);
bSet = true;
inputObject._useTransformOffset = inputPreset._inputObjectPresets[i]._useTransformOffset;
inputObject._translateOffset = inputPreset._inputObjectPresets[i]._translateOffset;
inputObject._rotateOffset = inputPreset._inputObjectPresets[i]._rotateOffset;
inputObject._scaleOffset = inputPreset._inputObjectPresets[i]._scaleOffset;
}
else
{
Debug.LogWarningFormat("Gameobject with name {0} not found. Unable to set input object.", inputPreset._inputAssetName);
}
}
if (!bSet)
{
// Add dummy spot (user can replace it manually)
InternalAddInputObjectAtEnd(null);
}
}
}
else if (inputPreset._inputObjectType == HEU_InputNode.InputObjectType.HDA)
{
bool bSet = false;
int numInptus = inputPreset._inputAssetPresets.Count;
for (int i = 0; i < numInptus; ++i)
{
bSet = false;
if (!string.IsNullOrEmpty(inputPreset._inputAssetPresets[i]._gameObjectName))
{
bSet = FindAddToInputHDA(inputPreset._inputAssetPresets[i]._gameObjectName);
}
if (!bSet)
{
// Couldn't add for some reason, so just add dummy spot (user can replace it manually)
InternalAddInputHDAAtEnd(null);
}
}
if (numInptus == 0 && !string.IsNullOrEmpty(inputPreset._inputAssetName))
{
// Old preset. Add it to input
FindAddToInputHDA(inputPreset._inputAssetName);
}
}
KeepWorldTransform = inputPreset._keepWorldTransform;
PackGeometryBeforeMerging = inputPreset._packGeometryBeforeMerging;
RequiresUpload = true;
ClearUICache();
}
public void GenerateTerrainWithAlphamaps(HEU_SessionBase session, HEU_HoudiniAsset houdiniAsset, bool bRebuild)
{
if(_layers == null || _layers.Count == 0)
{
Debug.LogError("Unable to generate terrain due to lack of heightfield layers!");
return;
}
HEU_VolumeLayer heightLayer = _layers[0];
HAPI_VolumeInfo heightVolumeInfo = new HAPI_VolumeInfo();
bool bResult = session.GetVolumeInfo(_ownerNode.GeoID, heightLayer._part.PartID, ref heightVolumeInfo);
if (!bResult)
{
Debug.LogErrorFormat("Unable to get volume info for height layer: {0}!", heightLayer._layerName);
return;
}
// Special handling of volume cache presets. It is applied here (if exists) because it might pertain to TerrainData that exists
// in the AssetDatabase. If we don't apply here but rather create a new one, the existing file will get overwritten.
// Applying the preset here for terrain ensures the TerrainData is reused.
// Get the volume preset for this part
HEU_VolumeCachePreset volumeCachePreset = houdiniAsset.GetVolumeCachePreset(_ownerNode.ObjectNode.ObjectName, _ownerNode.GeoName, TileIndex);
if (volumeCachePreset != null)
{
ApplyPreset(volumeCachePreset);
// Remove it so that it doesn't get applied when doing the recook step
houdiniAsset.RemoveVolumeCachePreset(volumeCachePreset);
}
// The TerrainData and TerrainLayer files needs to be saved out if we create them. This creates the relative folder
// path from the Asset's cache folder: {assetCache}/{geo name}/Terrain/Tile{tileIndex}/...
string relativeFolderPath = HEU_Platform.BuildPath(_ownerNode.GeoName, HEU_Defines.HEU_FOLDER_TERRAIN, HEU_Defines.HEU_FOLDER_TILE + TileIndex);
if (bRebuild)
{
// For full rebuild, re-create the TerrainData instead of using previous
_terrainData = null;
}
//Debug.Log("Generating Terrain with AlphaMaps: " + (_terrainData != null ? _terrainData.name : "NONE"));
TerrainData terrainData = _terrainData;
Vector3 terrainOffsetPosition = Vector3.zero;
// Look up TerrainData file via attribute if user has set it
string terrainDataFile = HEU_GeneralUtility.GetAttributeStringValueSingle(session, _ownerNode.GeoID, heightLayer._part.PartID,
HEU_Defines.DEFAULT_UNITY_HEIGHTFIELD_TERRAINDATA_FILE_ATTR, HAPI_AttributeOwner.HAPI_ATTROWNER_PRIM);
if (!string.IsNullOrEmpty(terrainDataFile))
{
TerrainData loadedTerrainData = HEU_AssetDatabase.LoadAssetAtPath(terrainDataFile, typeof(TerrainData)) as TerrainData;
if (loadedTerrainData == null)
{
Debug.LogWarningFormat("TerrainData, set via attribute, not found at: {0}", terrainDataFile);
}
else
{
// In the case that the specified TerrainData belongs to another Terrain (i.e. input Terrain),
// make a copy of it and store it in our cache. Note that this overwrites existing TerrainData in our cache
// because the workflow is such that attributes will always override local setting.
string bakedTerrainPath = houdiniAsset.GetValidAssetCacheFolderPath();
bakedTerrainPath = HEU_Platform.BuildPath(bakedTerrainPath, relativeFolderPath);
terrainData = HEU_AssetDatabase.CopyAndLoadAssetAtAnyPath(loadedTerrainData, bakedTerrainPath, typeof(TerrainData), true) as TerrainData;
if (terrainData == null)
{
Debug.LogErrorFormat("Unable to copy TerrainData from {0} for generating Terrain.", terrainDataFile);
}
}
}
// Generate the terrain and terrain data from the height layer. This applies height values.
bResult = HEU_TerrainUtility.GenerateTerrainFromVolume(session, ref heightVolumeInfo, heightLayer._part.ParentGeoNode.GeoID,
heightLayer._part.PartID, heightLayer._part.OutputGameObject, ref terrainData, out terrainOffsetPosition);
if (!bResult || terrainData == null)
{
return;
}
if (_terrainData != terrainData)
{
_terrainData = terrainData;
heightLayer._part.SetTerrainData(terrainData, relativeFolderPath);
}
heightLayer._part.SetTerrainOffsetPosition(terrainOffsetPosition);
int terrainSize = terrainData.heightmapResolution;
// Now process TerrainLayers and alpha maps
// First, preprocess all layers to get heightfield arrays, converted to proper size
List<float[]> heightFields = new List<float[]>();
// Corresponding list of HF volume layers to process as splatmaps
List<HEU_VolumeLayer> volumeLayersToProcess = new List<HEU_VolumeLayer>();
int numLayers = _layers.Count;
float minHeight = 0;
float maxHeight = 0;
float heightRange = 0;
// This skips the height layer, and processes all other layers.
// Note that mask shouldn't be part of _layers at this point.
for(int i = 1; i < numLayers; ++i)
{
float[] normalizedHF = HEU_TerrainUtility.GetNormalizedHeightmapFromPartWithMinMax(session, _ownerNode.GeoID, _layers[i]._part.PartID,
_layers[i]._xLength, _layers[i]._yLength, ref minHeight, ref maxHeight, ref heightRange);
if (normalizedHF != null && normalizedHF.Length > 0)
{
heightFields.Add(normalizedHF);
volumeLayersToProcess.Add(_layers[i]);
}
}
int numVolumeLayers = volumeLayersToProcess.Count;
HAPI_NodeId geoID;
HAPI_PartId partID;
Texture2D defaultTexture = LoadDefaultSplatTexture();
#if UNITY_2018_3_OR_NEWER
// Create or update the terrain layers based on heightfield layers.
// 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);
// This holds the alpha map indices for each layer that will be added to the TerrainData.
// The alpha maps could be a mix of existing and new values, so need to know which to use
// Initially set to use existing alpha maps, then override later on if specified via HF layers
List<int> alphaMapIndices = new List<int>();
for (int a = 0; a < existingTerrainLayers.Length; ++a)
{
// Negative indices for existing alpha map (offset by -1)
alphaMapIndices.Add(-a - 1);
}
bool bNewTerrainLayer = false;
HEU_VolumeLayer layer = null;
TerrainLayer terrainLayer = null;
bool bSetTerrainLayerProperties = true;
for (int m = 0; m < numVolumeLayers; ++m)
{
bNewTerrainLayer = false;
bSetTerrainLayerProperties = true;
layer = volumeLayersToProcess[m];
geoID = _ownerNode.GeoID;
partID = layer._part.PartID;
terrainLayer = null;
int terrainLayerIndex = -1;
// The TerrainLayer attribute overrides existing TerrainLayer. So if its set, load and use it.
string terrainLayerFile = HEU_GeneralUtility.GetAttributeStringValueSingle(session, geoID, partID,
HEU_Defines.DEFAULT_UNITY_HEIGHTFIELD_TERRAINLAYER_FILE_ATTR, HAPI_AttributeOwner.HAPI_ATTROWNER_PRIM);
if (!string.IsNullOrEmpty(terrainLayerFile))
{
terrainLayer = HEU_AssetDatabase.LoadAssetAtPath(terrainLayerFile, typeof(TerrainLayer)) as TerrainLayer;
if (terrainLayer == null)
{
Debug.LogWarningFormat("TerrainLayer, set via attribute, not found at: {0}", terrainLayerFile);
// Not earlying out or skipping this layer due to error because we want to keep proper indexing
// by creating a new TerrainLayer.
}
else
{
// TerrainLayer loaded from attribute.
// It could be an existing TerrainLayer that is already part of finalTerrainLayers
// or could be a new one which needs to be added.
// If its a different TerrainLayer than existing, update the finalTerrainLayers, and index.
if (layer._terrainLayer != null && layer._terrainLayer != terrainLayer)
{
terrainLayerIndex = HEU_TerrainUtility.GetTerrainLayerIndex(layer._terrainLayer, existingTerrainLayers);
if (terrainLayerIndex >= 0)
{
finalTerrainLayers[terrainLayerIndex] = terrainLayer;
}
}
if (terrainLayerIndex == -1)
{
// Always check if its part of existing list so as not to add it again
terrainLayerIndex = HEU_TerrainUtility.GetTerrainLayerIndex(terrainLayer, existingTerrainLayers);
}
}
}
// No terrain layer specified, so try using existing if we have it
if (terrainLayer == null)
{
terrainLayerIndex = HEU_TerrainUtility.GetTerrainLayerIndex(layer._terrainLayer, existingTerrainLayers);
if (terrainLayerIndex >= 0)
{
// Note the terrainLayerIndex is same for finalTerrainLayers as existingTerrainLayers
terrainLayer = existingTerrainLayers[terrainLayerIndex];
}
}
// Still not found, so just create a new one
if (terrainLayer == null)
{
terrainLayer = new TerrainLayer();
terrainLayer.name = layer._layerName;
//Debug.LogFormat("Created new TerrainLayer with name: {0} ", terrainLayer.name);
bNewTerrainLayer = true;
}
if (terrainLayerIndex == -1)
{
// Adding to the finalTerrainLayers if this is indeed a newly created or loaded TerrainLayer
// (i.e. isn't already part of the TerrainLayers for this Terrain).
// Save this layer's index for later on if we make a copy.
terrainLayerIndex = finalTerrainLayers.Count;
finalTerrainLayers.Add(terrainLayer);
// Positive index for alpha map from heightfield (starting at 1)
alphaMapIndices.Add(m + 1);
}
else
{
// Positive index for alpha map from heightfield (starting at 1)
alphaMapIndices[terrainLayerIndex] = m + 1;
}
// 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 (!bNewTerrainLayer && layer._hasLayerAttributes)
{
string bakedTerrainPath = houdiniAsset.GetValidAssetCacheFolderPath();
bakedTerrainPath = HEU_Platform.BuildPath(bakedTerrainPath, relativeFolderPath);
TerrainLayer prevTerrainLayer = terrainLayer;
terrainLayer = HEU_AssetDatabase.CopyAndLoadAssetAtAnyPath(terrainLayer, bakedTerrainPath, typeof(TerrainLayer), true) as TerrainLayer;
if (terrainLayer != null)
{
// Update the TerrainLayer reference in the list with this copy
finalTerrainLayers[terrainLayerIndex] = 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.
}
}
// Now override layer properties if they have been set via attributes
if (bSetTerrainLayerProperties)
{
LoadLayerPropertiesFromAttributes(session, geoID, partID, terrainLayer, bNewTerrainLayer, defaultTexture);
}
if (bNewTerrainLayer)
{
// In order to retain the new TerrainLayer, it must be saved to the AssetDatabase.
Object savedObject = null;
string layerFileNameWithExt = terrainLayer.name;
if (!layerFileNameWithExt.EndsWith(HEU_Defines.HEU_EXT_TERRAINLAYER))
{
layerFileNameWithExt += HEU_Defines.HEU_EXT_TERRAINLAYER;
}
houdiniAsset.AddToAssetDBCache(layerFileNameWithExt, terrainLayer, relativeFolderPath, ref savedObject);
}
// Store reference
layer._terrainLayer = terrainLayer;
}
// Get existing alpha maps so we can reuse the values if needed
float[,,] existingAlphaMaps = terrainData.GetAlphamaps(0, 0, terrainData.alphamapWidth, terrainData.alphamapHeight);
terrainData.terrainLayers = finalTerrainLayers.ToArray();
int numTotalAlphaMaps = finalTerrainLayers.Count;
#else
// Create or update the SplatPrototype based on heightfield layers.
// Need to create or reuse SplatPrototype for each layer in heightfield, representing the textures.
SplatPrototype[] existingSplats = terrainData.splatPrototypes;
// A full rebuild clears out existing splats, but a regular cook keeps them.
List<SplatPrototype> finalSplats = new List<SplatPrototype>(existingSplats);
// This holds the alpha map indices for each layer that will be added to the TerrainData
// The alpha maps could be a mix of existing and new values, so need to know which to use
List<int> alphaMapIndices = new List<int>();
// Initially set to use existing alpha maps, then override later on if specified via HF layers.
for (int a = 0; a < existingSplats.Length; ++a)
{
// Negative indices for existing alpha map (offset by -1)
alphaMapIndices.Add(-a - 1);
}
bool bNewSplat = false;
HEU_VolumeLayer layer = null;
SplatPrototype splatPrototype = null;
for (int m = 0; m < numVolumeLayers; ++m)
{
bNewSplat = false;
layer = volumeLayersToProcess[m];
geoID = _ownerNode.GeoID;
partID = layer._part.PartID;
// Try to find existing SplatPrototype for reuse. But not for full rebuild.
splatPrototype = null;
if (layer._splatPrototypeIndex >= 0 && layer._splatPrototypeIndex < existingSplats.Length)
{
splatPrototype = existingSplats[layer._splatPrototypeIndex];
// Positive index for alpha map from heightfield (starting at 1)
alphaMapIndices[layer._splatPrototypeIndex] = m + 1;
}
if (splatPrototype == null)
{
splatPrototype = new SplatPrototype();
layer._splatPrototypeIndex = finalSplats.Count;
finalSplats.Add(splatPrototype);
// Positive index for alpha map from heightfield (starting at 1)
alphaMapIndices.Add(m + 1);
}
// Now override splat properties if they have been set via attributes
LoadLayerPropertiesFromAttributes(session, geoID, partID, splatPrototype, bNewSplat, defaultTexture);
}
// On regular cook, get existing alpha maps so we can reuse the values if needed.
float[,,] existingAlphaMaps = terrainData.GetAlphamaps(0, 0, terrainData.alphamapWidth, terrainData.alphamapHeight);
terrainData.splatPrototypes = finalSplats.ToArray();
int numTotalAlphaMaps = finalSplats.Count;
#endif
// Set alpha maps by combining with existing alpha maps, and appending new heightfields
float[,,] alphamap = null;
if (numTotalAlphaMaps > 0 && volumeLayersToProcess.Count > 0)
{
// Convert the heightfields into alpha maps with layer strengths
float[] strengths = new float[volumeLayersToProcess.Count];
for (int m = 0; m < volumeLayersToProcess.Count; ++m)
{
strengths[m] = volumeLayersToProcess[m]._strength;
}
alphamap = HEU_TerrainUtility.AppendConvertedHeightFieldToAlphaMap(
volumeLayersToProcess[0]._xLength, volumeLayersToProcess[0]._yLength, existingAlphaMaps,
heightFields, strengths, alphaMapIndices);
// Update the alphamap resolution to the actual size of the first
// heightfield layer used for the alphamaps.
// Setting the size before setting the alphamas applies proper scaling.
int alphamapResolution = volumeLayersToProcess[0]._xLength;
terrainData.alphamapResolution = alphamapResolution;
terrainData.SetAlphamaps(0, 0, alphamap);
}
// Tree instances for scattering
HEU_TerrainUtility.ApplyScatter(terrainData, _scatterTrees);
// If the layers were writen out, this saves the asset DB. Otherwise user has to save it themselves.
// Not 100% sure this is needed, but without this the editor doesn't know the terrain asset has been updated
// and therefore doesn't import and show the terrain layer.
HEU_AssetDatabase.SaveAssetDatabase();
}
private void GenerateInstancesFromAssetPaths(HEU_LoadBufferInstancer instancerBuffer, Transform instanceRootTransform)
{
// For single asset, this is set when its impoted
GameObject singleAssetGO = null;
// For multi assets, keep track of loaded objects so we only need to load once for each object
Dictionary<string, GameObject> loadedUnityObjectMap = new Dictionary<string, GameObject>();
// Temporary empty gameobject in case the specified Unity asset is not found
GameObject tempGO = null;
if (instancerBuffer._assetPaths.Length == 1)
{
// Single asset path
if (!string.IsNullOrEmpty(instancerBuffer._assetPaths[0]))
{
HEU_AssetDatabase.ImportAsset(instancerBuffer._assetPaths[0], HEU_AssetDatabase.HEU_ImportAssetOptions.Default);
singleAssetGO = HEU_AssetDatabase.LoadAssetAtPath(instancerBuffer._assetPaths[0], typeof(GameObject)) as GameObject;
}
if (singleAssetGO == null)
{
Debug.LogErrorFormat("Asset at path {0} not found. Unable to create instances for {1}.", instancerBuffer._assetPaths[0], instancerBuffer._name);
return;
}
}
int numInstancesCreated = 0;
int numInstances = instancerBuffer._instanceTransforms.Length;
for (int i = 0; i < numInstances; ++i)
{
// Reset to the single asset for each instance allows which is null if using multi asset
// therefore forcing the instance asset to be found
GameObject unitySrcGO = singleAssetGO;
if (unitySrcGO == null)
{
// If not using single asset, then there must be an asset path for each instance
if (string.IsNullOrEmpty(instancerBuffer._assetPaths[i]))
{
continue;
}
if (!loadedUnityObjectMap.TryGetValue(instancerBuffer._assetPaths[i], out unitySrcGO))
{
// Try loading it
//HEU_AssetDatabase.ImportAsset(instancerBuffer._assetPaths[i], HEU_AssetDatabase.HEU_ImportAssetOptions.Default);
unitySrcGO = HEU_AssetDatabase.LoadAssetAtPath(instancerBuffer._assetPaths[i], typeof(GameObject)) as GameObject;
if (unitySrcGO == null)
{
Debug.LogErrorFormat("Unable to load asset at {0} for instancing!", instancerBuffer._assetPaths[i]);
// Even though the source Unity object is not found, we should create an object instance info to track it
if (tempGO == null)
{
tempGO = new GameObject();
}
unitySrcGO = tempGO;
}
// Adding to map even if not found so we don't flood the log with the same error message
loadedUnityObjectMap.Add(instancerBuffer._assetPaths[i], unitySrcGO);
}
}
CreateNewInstanceFromObject(unitySrcGO, (numInstancesCreated + 1), instanceRootTransform, ref instancerBuffer._instanceTransforms[i],
instancerBuffer._instancePrefixes, instancerBuffer._name);
numInstancesCreated++;
}
if (tempGO != null)
{
HEU_GeneralUtility.DestroyImmediate(tempGO, bRegisterUndo: false);
}
}
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]);
}
}
}
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>
/// Apply the given detail layers and properties to the given terrain.
/// The detail distance and resolution will be set, along with detail prototypes, and layers.
/// </summary>
/// <param name="terrain">The Terrain to set the detail properies on</param>
/// <param name="terrainData">The TerrainData to apply the layers to</param>
/// <param name="detailProperties">Container for detail distance and resolution</param>
/// <param name="heuDetailPrototypes">Data for creating DetailPrototypes</param>
/// <param name="convertedDetailMaps">The detail maps to set for the detail layers</param>
public static void ApplyDetailLayers(Terrain terrain, TerrainData terrainData, HEU_DetailProperties detailProperties,
List<HEU_DetailPrototype> heuDetailPrototypes, List<int[,]> convertedDetailMaps)
{
#if UNITY_2018_3_OR_NEWER
if (detailProperties != null)
{
if (detailProperties._detailDistance >= 0)
{
terrain.detailObjectDistance = detailProperties._detailDistance;
}
if (detailProperties._detailDensity >= 0)
{
terrain.detailObjectDensity = detailProperties._detailDensity;
}
int resPerPath = detailProperties._detailResolutionPerPatch > 0 ?
detailProperties._detailResolutionPerPatch : terrainData.detailResolutionPerPatch;
int detailRes = detailProperties._detailResolution > 0 ?
detailProperties._detailResolution : terrainData.detailResolutionPerPatch;
if (resPerPath > 0 && detailRes > 0)
{
// This should match with half the terrain size
terrainData.SetDetailResolution(detailRes, resPerPath);
}
}
if (heuDetailPrototypes.Count != convertedDetailMaps.Count)
{
Debug.LogError("Number of volume detail layers differs from converted detail maps. Unable to apply detail layers.");
return;
}
// For now, just override existing detail prototypes and layers
// If user asks for appending/overwriting them, then can use a new index attribute to map them
List<DetailPrototype> detailPrototypes = new List<DetailPrototype>();
int numDetailLayers = heuDetailPrototypes.Count;
for(int i = 0; i < numDetailLayers; ++i)
{
DetailPrototype detailPrototype = new DetailPrototype();
HEU_DetailPrototype heuDetail = heuDetailPrototypes[i];
if (!string.IsNullOrEmpty(heuDetail._prototypePrefab))
{
detailPrototype.prototype = HEU_AssetDatabase.LoadAssetAtPath(heuDetail._prototypePrefab, typeof(GameObject)) as GameObject;
detailPrototype.usePrototypeMesh = true;
}
else if (!string.IsNullOrEmpty(heuDetail._prototypeTexture))
{
detailPrototype.prototypeTexture = HEU_MaterialFactory.LoadTexture(heuDetail._prototypeTexture);
detailPrototype.usePrototypeMesh = false;
}
detailPrototype.bendFactor = heuDetail._bendFactor;
detailPrototype.dryColor = heuDetail._dryColor;
detailPrototype.healthyColor = heuDetail._healthyColor;
detailPrototype.maxHeight = heuDetail._maxHeight;
detailPrototype.maxWidth = heuDetail._maxWidth;
detailPrototype.minHeight = heuDetail._minHeight;
detailPrototype.minWidth = heuDetail._minWidth;
detailPrototype.noiseSpread = heuDetail._noiseSpread;
detailPrototype.renderMode = (DetailRenderMode)heuDetail._renderMode;
detailPrototypes.Add(detailPrototype);
}
// Set the DetailPrototypes
if (detailPrototypes.Count > 0)
{
terrainData.detailPrototypes = detailPrototypes.ToArray();
}
// Set the DetailLayers
for(int i = 0; i < numDetailLayers; ++i)
{
terrainData.SetDetailLayer(0, 0, i, convertedDetailMaps[i]);
}
#endif
}
public void LoadPreset(HEU_SessionBase session, HEU_InputPreset inputPreset)
{
ResetInputNode(session);
ChangeInputType(session, inputPreset._inputObjectType);
if (inputPreset._inputObjectType == HEU_InputNode.InputObjectType.UNITY_MESH)
{
int numObjects = inputPreset._inputObjectPresets.Count;
for (int i = 0; i < numObjects; ++i)
{
if (!string.IsNullOrEmpty(inputPreset._inputObjectPresets[i]._gameObjectName))
{
GameObject inputGO = null;
if (inputPreset._inputObjectPresets[i]._isSceneObject)
{
inputGO = HEU_GeneralUtility.GetGameObjectByNameInScene(inputPreset._inputObjectPresets[i]._gameObjectName);
}
else
{
// Use the _gameObjectName as path to find in scene
inputGO = HEU_AssetDatabase.LoadAssetAtPath(inputPreset._inputObjectPresets[i]._gameObjectName, typeof(GameObject)) as GameObject;
if(inputGO == null)
{
Debug.LogErrorFormat("Unable to find input at {0}", inputPreset._inputObjectPresets[i]._gameObjectName);
}
}
if (inputGO != null)
{
HEU_InputObjectInfo inputObject = AddInputObjectAtEnd(inputGO);
inputObject._useTransformOffset = inputPreset._inputObjectPresets[i]._useTransformOffset;
inputObject._translateOffset = inputPreset._inputObjectPresets[i]._translateOffset;
inputObject._rotateOffset = inputPreset._inputObjectPresets[i]._rotateOffset;
inputObject._scaleOffset = inputPreset._inputObjectPresets[i]._scaleOffset;
}
else
{
Debug.LogWarningFormat("Gameobject with name {0} not found. Unable to set input object.", inputPreset._inputAssetName);
}
}
}
}
else if (inputPreset._inputObjectType == HEU_InputNode.InputObjectType.HDA)
{
if (!string.IsNullOrEmpty(inputPreset._inputAssetName))
{
GameObject inputAsset = GameObject.Find(inputPreset._inputAssetName);
if (inputAsset != null)
{
HEU_HoudiniAssetRoot inputAssetRoot = inputAsset != null ? inputAsset.GetComponent<HEU_HoudiniAssetRoot>() : null;
if (inputAssetRoot != null && inputAssetRoot._houdiniAsset != null)
{
// Need to reconnect and make sure connected asset is in this session
_inputAsset = inputAsset;
if (!inputAssetRoot._houdiniAsset.IsAssetValidInHoudini(session))
{
inputAssetRoot._houdiniAsset.RequestCook(true, false, true, true);
}
_connectedNodeID = inputAssetRoot._houdiniAsset.AssetID;
_parentAsset.ConnectToUpstream(inputAssetRoot._houdiniAsset);
_connectedInputAsset = _inputAsset;
}
else
{
Debug.LogErrorFormat("Input HDA with name {0} is not a valid asset (missing components). Unable to set input asset.", inputPreset._inputAssetName);
}
}
else
{
Debug.LogWarningFormat("Game with name {0} not found. Unable to set input asset.", inputPreset._inputAssetName);
}
}
}
KeepWorldTransform = inputPreset._keepWorldTransform;
PackGeometryBeforeMerging = inputPreset._packGeometryBeforeMerging;
RequiresUpload = true;
ClearUICache();
}
private void GenerateInstancesFromNodeIDs(HAPI_NodeId cookNodeId, HEU_LoadBufferInstancer instancerBuffer, Dictionary <HAPI_NodeId, HEU_LoadBufferBase> idBuffersMap,
Transform instanceRootTransform)
{
// For single collision geo override
GameObject singleCollisionGO = null;
// For multi collision geo overrides, keep track of loaded objects
Dictionary <string, GameObject> loadedCollisionObjectMap = new Dictionary <string, GameObject>();
if (instancerBuffer._collisionAssetPaths != null && instancerBuffer._collisionAssetPaths.Length == 1)
{
// Single collision override
if (!string.IsNullOrEmpty(instancerBuffer._collisionAssetPaths[0]))
{
HEU_AssetDatabase.ImportAsset(instancerBuffer._collisionAssetPaths[0], HEU_AssetDatabase.HEU_ImportAssetOptions.Default);
singleCollisionGO = HEU_AssetDatabase.LoadAssetAtPath(instancerBuffer._collisionAssetPaths[0], typeof(GameObject)) as GameObject;
}
if (singleCollisionGO == null)
{
// Continue on but log error
Debug.LogErrorFormat("Collision asset at path {0} not found for instance {1}.", instancerBuffer._collisionAssetPaths[0], instancerBuffer._name);
}
}
int numInstances = instancerBuffer._instanceNodeIDs.Length;
for (int i = 0; i < numInstances; ++i)
{
HEU_LoadBufferBase sourceBuffer = null;
if (!idBuffersMap.TryGetValue(instancerBuffer._instanceNodeIDs[i], out sourceBuffer) || sourceBuffer == null)
{
Debug.LogErrorFormat("Part with id {0} is missing. Unable to setup instancer!", instancerBuffer._instanceNodeIDs[i]);
return;
}
// If the part we're instancing is itself an instancer, make sure it has generated its instances
if (sourceBuffer._bInstanced && sourceBuffer._generatedOutput == null)
{
HEU_LoadBufferInstancer sourceBufferInstancer = instancerBuffer as HEU_LoadBufferInstancer;
if (sourceBufferInstancer != null)
{
GenerateInstancer(cookNodeId, sourceBufferInstancer, idBuffersMap);
}
}
GameObject sourceGameObject = sourceBuffer._generatedOutput._outputData._gameObject;
if (sourceGameObject == null)
{
Debug.LogErrorFormat("Output gameobject is null for source {0}. Unable to instance for {1}.", sourceBuffer._name, instancerBuffer._name);
continue;
}
GameObject collisionSrcGO = null;
if (singleCollisionGO != null)
{
// Single collision geo
collisionSrcGO = singleCollisionGO;
}
else if (instancerBuffer._collisionAssetPaths != null &&
(i < instancerBuffer._collisionAssetPaths.Length) &&
!string.IsNullOrEmpty(instancerBuffer._collisionAssetPaths[i]))
{
// Mutliple collision geo (one per instance).
if (!loadedCollisionObjectMap.TryGetValue(instancerBuffer._collisionAssetPaths[i], out collisionSrcGO))
{
collisionSrcGO = HEU_AssetDatabase.LoadAssetAtPath(instancerBuffer._collisionAssetPaths[i], typeof(GameObject)) as GameObject;
if (collisionSrcGO == null)
{
Debug.LogErrorFormat("Unable to load collision asset at {0} for instancing!", instancerBuffer._collisionAssetPaths[i]);
}
else
{
loadedCollisionObjectMap.Add(instancerBuffer._collisionAssetPaths[i], collisionSrcGO);
}
}
}
int numTransforms = instancerBuffer._instanceTransforms.Length;
for (int j = 0; j < numTransforms; ++j)
{
CreateNewInstanceFromObject(sourceGameObject, (j + 1), instanceRootTransform, ref instancerBuffer._instanceTransforms[j],
instancerBuffer._instancePrefixes, instancerBuffer._name, collisionSrcGO);
}
}
}
