public static void CopyDetailProperties(HEU_DetailProperties srcProp,
HEU_DetailProperties destProp)
{
destProp._detailDistance = srcProp._detailDistance;
destProp._detailResolution = srcProp._detailResolution;
destProp._detailResolutionPerPatch = srcProp._detailResolutionPerPatch;
}
public void Initialize(HEU_GeoNode ownerNode, int tileIndex)
{
_ownerNode = ownerNode;
_geoName = ownerNode.GeoName;
_objName = ownerNode.ObjectNode.ObjectName;
_tileIndex = tileIndex;
_terrainData = null;
_scatterTrees = null;
_detailProperties = null;
}
public void ResetParameters()
{
_terrainData = null;
_scatterTrees = null;
_detailProperties = null;
HEU_VolumeLayer defaultLayer = new HEU_VolumeLayer();
foreach (HEU_VolumeLayer layer in _layers)
{
CopyLayer(defaultLayer, layer);
}
}
/// <summary>
/// Retrieve and set the detail properties from the specified heightfield.
/// This includes detail distance, density, and resolution per patch.
/// </summary>
/// <param name="session">Current Houdini Engine session</param>
/// <param name="geoID">Heightfield object</param>
/// <param name="partID">Heightfield layer</param>
/// <param name="detailProperties">Reference to a HEU_DetailProperties which will
/// be populated.</param>
public static void PopulateDetailProperties(HEU_SessionBase session, HAPI_NodeId geoID,
HAPI_PartId partID, ref HEU_DetailProperties detailProperties)
{
// Detail distance
HAPI_AttributeInfo detailDistanceAttrInfo = new HAPI_AttributeInfo();
int[] detailDistances = new int[0];
HEU_GeneralUtility.GetAttribute(session, geoID, partID,
HEU_Defines.HEIGHTFIELD_DETAIL_DISTANCE, ref detailDistanceAttrInfo, ref detailDistances,
session.GetAttributeIntData);
// Detail density
HAPI_AttributeInfo detailDensityAttrInfo = new HAPI_AttributeInfo();
float[] detailDensity = new float[0];
HEU_GeneralUtility.GetAttribute(session, geoID, partID,
HEU_Defines.HEIGHTFIELD_DETAIL_DENSITY, ref detailDensityAttrInfo, ref detailDensity,
session.GetAttributeFloatData);
// Scatter Detail Resolution Per Patch (note that Detail Resolution comes from HF layer size)
HAPI_AttributeInfo resolutionPatchAttrInfo = new HAPI_AttributeInfo();
int[] resolutionPatches = new int[0];
HEU_GeneralUtility.GetAttribute(session, geoID, partID,
HEU_Defines.HEIGHTFIELD_DETAIL_RESOLUTION_PER_PATCH, ref resolutionPatchAttrInfo,
ref resolutionPatches, session.GetAttributeIntData);
if (detailProperties == null)
{
detailProperties = new HEU_DetailProperties();
}
// Unity only supports 1 set of detail resolution properties per terrain
int arraySize = 1;
if (detailDistanceAttrInfo.exists && detailDistances.Length >= arraySize)
{
detailProperties._detailDistance = detailDistances[0];
}
if (detailDensityAttrInfo.exists && detailDensity.Length >= arraySize)
{
detailProperties._detailDensity = detailDensity[0];
}
if (resolutionPatchAttrInfo.exists && resolutionPatches.Length >= arraySize)
{
detailProperties._detailResolutionPerPatch = resolutionPatches[0];
}
}
/// <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 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 export file path via attribute if user has set it
string userTerrainDataExportPath = HEU_GeneralUtility.GetAttributeStringValueSingle(session, _ownerNode.GeoID, heightLayer._part.PartID,
HEU_Defines.DEFAULT_UNITY_HEIGHTFIELD_TERRAINDATA_EXPORT_FILE_ATTR, HAPI_AttributeOwner.HAPI_ATTROWNER_PRIM);
// 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.
if (!string.IsNullOrEmpty(userTerrainDataExportPath))
{
// Save it to explicit path specified by user
terrainData = HEU_AssetDatabase.CopyAndLoadAssetAtGivenPath(loadedTerrainData, userTerrainDataExportPath, typeof(TerrainData)) as TerrainData;
}
else
{
// Save it into cache
// Note that this overwrites existing TerrainData in our cache because the workflow is
// such that attributes will always override local setting.
string bakedTerrainPath = HEU_Platform.BuildPath(houdiniAsset.GetValidAssetCacheFolderPath(), 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);
}
}
}
}
Terrain terrain = null;
// 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,
ref terrain);
if (!bResult || terrainData == null)
{
return;
}
if (_terrainData != terrainData)
{
_terrainData = terrainData;
heightLayer._part.SetTerrainData(terrainData, relativeFolderPath, userTerrainDataExportPath);
}
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[]> normalizedHeightfields = new List<float[]>();
// Corresponding list of HF volume layers to process as splatmaps
List<HEU_VolumeLayer> terrainLayersToProcess = new List<HEU_VolumeLayer>();
List<int[,]> convertedDetailMaps = new List<int[,]>();
List<HEU_DetailPrototype> detailPrototypes = new List<HEU_DetailPrototype>();
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.
// The layers are normalized and split into detail and terrain layers.
for (int i = 1; i < numLayers; ++i)
{
if (_layers[i]._layerType == HFLayerType.DETAIL)
{
if (_detailProperties == null)
{
_detailProperties = new HEU_DetailProperties();
}
// Convert to detail map, and add to list to set later
int[,] normalizedDetail = HEU_TerrainUtility.GetDetailMapFromPart(
session, _ownerNode.GeoID, _layers[i]._part.PartID, out _detailProperties._detailResolution);
if (normalizedDetail != null && normalizedDetail.Length > 0)
{
convertedDetailMaps.Add(normalizedDetail);
detailPrototypes.Add(_layers[i]._detailPrototype);
}
}
else
{
// Convert to normalized heightfield
float[] normalizedHF = HEU_TerrainUtility.GetNormalizedHeightmapFromPartWithMinMax(
session, _ownerNode.GeoID, _layers[i]._part.PartID, _layers[i]._xLength,
_layers[i]._yLength, ref minHeight, ref maxHeight, ref heightRange, false);
if (normalizedHF != null && normalizedHF.Length > 0)
{
normalizedHeightfields.Add(normalizedHF);
terrainLayersToProcess.Add(_layers[i]);
}
}
}
int numTerrainLayersToProcess = terrainLayersToProcess.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 < numTerrainLayersToProcess; ++m)
{
bNewTerrainLayer = false;
bSetTerrainLayerProperties = true;
layer = terrainLayersToProcess[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 < numTerrainLayersToProcess; ++m)
{
bNewSplat = false;
layer = terrainLayersToProcess[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 && terrainLayersToProcess.Count > 0)
{
// Convert the heightfields into alpha maps with layer strengths
float[] strengths = new float[terrainLayersToProcess.Count];
for (int m = 0; m < terrainLayersToProcess.Count; ++m)
{
strengths[m] = terrainLayersToProcess[m]._strength;
}
alphamap = HEU_TerrainUtility.AppendConvertedHeightFieldToAlphaMap(
terrainLayersToProcess[0]._xLength, terrainLayersToProcess[0]._yLength, existingAlphaMaps,
normalizedHeightfields, 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 = terrainLayersToProcess[0]._xLength;
terrainData.alphamapResolution = alphamapResolution;
terrainData.SetAlphamaps(0, 0, alphamap);
}
// Scattering - trees and details
HEU_TerrainUtility.ApplyScatterTrees(terrainData, _scatterTrees);
HEU_TerrainUtility.ApplyDetailLayers(terrain, terrainData, _detailProperties, detailPrototypes, convertedDetailMaps);
// 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();
}
public void UpdateLayerFromPart(HEU_SessionBase session, HEU_PartData part)
{
HEU_GeoNode geoNode = part.ParentGeoNode;
HAPI_VolumeInfo volumeInfo = new HAPI_VolumeInfo();
bool bResult = session.GetVolumeInfo(geoNode.GeoID, part.PartID, ref volumeInfo);
if (!bResult || volumeInfo.tupleSize != 1 || volumeInfo.zLength != 1 || volumeInfo.storage != HAPI_StorageType.HAPI_STORAGETYPE_FLOAT)
{
return;
}
string volumeName = HEU_SessionManager.GetString(volumeInfo.nameSH, session);
part.SetVolumeLayerName(volumeName);
//Debug.LogFormat("Part name: {0}, GeoName: {1}, Volume Name: {2}, Display: {3}", part.PartName, geoNode.GeoName, volumeName, geoNode.Displayable);
HEU_VolumeLayer.HFLayerType layerType = GetHeightfieldLayerType(session, geoNode.GeoID, part.PartID, volumeName);
HEU_VolumeLayer layer = GetLayer(volumeName);
if (layer == null)
{
layer = new HEU_VolumeLayer();
layer._layerName = volumeName;
if (layerType == HEU_VolumeLayer.HFLayerType.HEIGHT)
{
_layers.Insert(0, layer);
}
else if(layerType != HEU_VolumeLayer.HFLayerType.MASK)
{
_layers.Add(layer);
}
}
layer._part = part;
layer._xLength = volumeInfo.xLength;
layer._yLength = volumeInfo.yLength;
layer._layerType = layerType;
if (layerType != HEU_VolumeLayer.HFLayerType.MASK)
{
GetPartLayerAttributes(session, geoNode.GeoID, part.PartID, layer);
}
if (layerType != HEU_VolumeLayer.HFLayerType.HEIGHT)
{
// Non-height parts don't have any outputs as they are simply layers carrying info
part.DestroyAllData();
}
else
{
// Height part
// Might contain terrain properties via attributes (i.e. not layer specific, but for entire terrain)
// Scatter Tree Prototypes
List<HEU_TreePrototypeInfo> treePrototypeInfos = HEU_TerrainUtility.GetTreePrototypeInfosFromPart(session, geoNode.GeoID, part.PartID);
if (treePrototypeInfos != null)
{
if (_scatterTrees == null)
{
_scatterTrees = new HEU_VolumeScatterTrees();
}
_scatterTrees._treePrototypInfos = treePrototypeInfos;
}
// Detail distance
HAPI_AttributeInfo detailDistanceAttrInfo = new HAPI_AttributeInfo();
int[] detailDistances = new int[0];
HEU_GeneralUtility.GetAttribute(session, geoNode.GeoID, part.PartID,
HEU_Defines.HEIGHTFIELD_DETAIL_DISTANCE, ref detailDistanceAttrInfo, ref detailDistances,
session.GetAttributeIntData);
// Scatter Detail Resolution Per Patch (note that Detail Resolution comes from HF layer size)
HAPI_AttributeInfo resolutionPatchAttrInfo = new HAPI_AttributeInfo();
int[] resolutionPatches = new int[0];
HEU_GeneralUtility.GetAttribute(session, geoNode.GeoID, part.PartID,
HEU_Defines.HEIGHTFIELD_DETAIL_RESOLUTION_PER_PATCH, ref resolutionPatchAttrInfo,
ref resolutionPatches, session.GetAttributeIntData);
if (_detailProperties == null)
{
_detailProperties = new HEU_DetailProperties();
}
// Unity only supports 1 set of detail resolution properties per terrain
int arraySize = 1;
if (detailDistanceAttrInfo.exists && detailDistances.Length >= arraySize)
{
_detailProperties._detailDistance = detailDistances[0];
}
if (resolutionPatchAttrInfo.exists && resolutionPatches.Length >= arraySize)
{
_detailProperties._detailResolutionPerPatch = resolutionPatches[0];
}
}
if (!_updatedLayers.Contains(layer))
{
if (layerType == HEU_VolumeLayer.HFLayerType.HEIGHT)
{
_updatedLayers.Insert(0, layer);
}
else if (layerType != HEU_VolumeLayer.HFLayerType.MASK)
{
_updatedLayers.Add(layer);
}
}
}