/**
* Update the LOD min/max distances for an object.
*
* @param isSpeedTree
* If this is set to true, then we will check if we have a billboard renderer to an LOD
* and we will skip it in case that we have one
*/
public static void UpdateDistancesLOD(FoliageTypeLODTree[] treeLods, LOD[] groupLods, float maxDistance, bool isSpeedTree)
{
if (groupLods != null && groupLods.Length > 0)
{
FoliageLog.Assert(groupLods.Length >= treeLods.Length, "Must have same or more lods than the tree lods!");
for (int i = 0; i < treeLods.Length; i++)
{
// If we are a speedtree check if we have a billboard renderer
if (isSpeedTree && groupLods[i].renderers[0].GetComponent <BillboardRenderer>() != null)
{
continue;
}
FoliageTypeLODTree lodTree = treeLods[i];
LOD lodGroupCurrent = groupLods[i];
lodTree.m_EndDistance = ((1.0f - lodGroupCurrent.screenRelativeTransitionHeight) * maxDistance);
}
}
else
{
treeLods[0].m_EndDistance = maxDistance;
}
}
private static void ExtractFromRootObject(FoliagePainterEditTime painter, GameObject root, bool disable, bool delete)
{
FoliageLog.Assert(root.transform.parent == null, "Must have root object!");
List <GameObject> foliageInstances = new List <GameObject>();
RecursivelyExtract(root, foliageInstances);
int extracted = 0;
// Process them and add them
for (int i = foliageInstances.Count - 1; i >= 0; i--)
{
GameObject proto = foliageInstances[i];
GameObject protoPrefab = PrefabUtility.GetPrefabParent(proto) as GameObject;
if (painter.HasFoliageType(protoPrefab) == false)
{
continue;
}
int hash = painter.GetFoliageTypeHash(protoPrefab);
FoliageInstance instance = new FoliageInstance();
// Populate the data
// Get the world data
Vector3 worldPosition = proto.transform.position;
Vector3 worldScale = proto.transform.localScale;
Quaternion worldRotation = proto.transform.rotation;
instance.m_Position = worldPosition;
instance.m_Scale = worldScale;
instance.m_Rotation = worldRotation;
// Add the foliage instance
painter.AddFoliageInstance(hash, instance, root.name);
extracted++;
// Auto disable
if (disable)
{
proto.SetActive(false);
}
// Auto delete
if (delete)
{
GameObject.DestroyImmediate(proto);
}
}
FoliageLog.i("Extracted objects: " + extracted + " from: " + root.name);
}
public static float GetMaxDistance(EFoliageType type)
{
switch (type)
{
case EFoliageType.OTHER_GRASS:
case EFoliageType.SPEEDTREE_GRASS:
return(FOLIAGE_MAX_GRASS_DISTANCE);
case EFoliageType.OTHER_TREE:
case EFoliageType.SPEEDTREE_TREE:
case EFoliageType.SPEEDTREE_TREE_BILLBOARD:
return(FOLIAGE_MAX_TREE_DISTANCE);
default:
FoliageLog.Assert(false, "Wrong type!");
return(FOLIAGE_MAX_GRASS_DISTANCE);
}
}
public static float ClampDistance(EFoliageType type, float maxViewDistance)
{
switch (type)
{
case EFoliageType.OTHER_GRASS:
case EFoliageType.SPEEDTREE_GRASS:
return(Mathf.Clamp(maxViewDistance, 0, FOLIAGE_MAX_GRASS_DISTANCE));
case EFoliageType.OTHER_TREE:
case EFoliageType.SPEEDTREE_TREE:
case EFoliageType.SPEEDTREE_TREE_BILLBOARD:
return(Mathf.Clamp(maxViewDistance, 0, FOLIAGE_MAX_TREE_DISTANCE));
default:
FoliageLog.Assert(false, "Wrong type!");
return(Mathf.Clamp(maxViewDistance, 0, FOLIAGE_MAX_GRASS_DISTANCE));
}
}
/** To be used at runtime. Will create all we need for SpeedTree wind and other data */
public static void BuildDataRuntime(FoliagePainter painter, FoliageType type, Transform attachmentPoint)
{
FoliageLog.Assert(type.IsRuntimeInitialized == false, "Runtime data already initialized!");
// Everyone has MPB's
type.m_RuntimeData.m_TypeMPB = new MaterialPropertyBlock();
if (type.IsSpeedTreeType)
{
// Create the glued mesh
var speedData = type.m_RuntimeData.m_SpeedTreeData;
FoliageLog.Assert(speedData != null, "Speed data must already be partly generated if we have a SpeedTree!");
// Get the lod and instnatiade the one with the least instructions
LOD[] lods = type.m_Prefab.GetComponent <LODGroup>().GetLODs();
for (int i = lods.Length - 1; i >= 0; i--)
{
if (lods[i].renderers[0].GetComponent <BillboardRenderer>() != null)
{
continue;
}
else
{
// Init the object with the lowest possible LOD
speedData.m_SpeedTreeWindObject = GameObject.Instantiate(lods[i].renderers[0].gameObject, attachmentPoint);
break;
}
}
// Set the data
speedData.m_SpeedTreeWindObjectMesh = speedData.m_SpeedTreeWindObject.GetComponentInChildren <MeshRenderer>();
// Set the NULL invisible shader
Shader nullShader = painter.GetShaderNull();
FoliageLog.Assert(nullShader, "Null shader not found! Make sure it exists and that it compiled!");
// Set the invisible null shader, we only need the wind
Material[] mats = speedData.m_SpeedTreeWindObjectMesh.materials;
for (int i = 0; i < mats.Length; i++)
{
mats[i].shader = nullShader;
}
// Attach the wind object. Ensures that we are enabled.
speedData.m_SpeedTreeWindObject.AddComponent <FoliageWindTreeWind>();
speedData.m_SpeedTreeWindObjectMesh.shadowCastingMode = UnityEngine.Rendering.ShadowCastingMode.Off;
speedData.m_SpeedTreeWindObject.transform.SetParent(attachmentPoint, false);
speedData.m_SpeedTreeWindObject.transform.localPosition = new Vector3(0, 0, 0);
MeshFilter m = speedData.m_SpeedTreeWindObject.GetComponentInChildren <MeshFilter>();
Bounds b = m.mesh.bounds;
b.Expand(4.5f);
m.mesh.bounds = b;
speedData.m_SpeedTreeWindObject.GetComponentInChildren <MeshFilter>().mesh = m.mesh;
}
// Not used here, since at edit time we already created the materials
/*
* if (type.Type == EFoliageType.SPEEDTREE_GRASS)
* {
* Shader shader = painter.GetShaderGrass();
* FoliageLog.Assert(shader, "Could not find shader: Critias/SpeedTree_Grass! Make sure that it is added to the project and that it compiled!");
*
* FoliageTypeLODGrass lodGrass = type.m_RuntimeData.m_LODDataGrass;
*
* // Override the material at runtime
* // lodGrass.m_Material = new Material(lodGrass.m_Material);
* // lodGrass.m_Material.shader = shader;
*
* // Enable it for instancing
* // lodGrass.m_Material.enableInstancing = true;
* }
* else if(type.Type == EFoliageType.SPEEDTREE_TREE || type.Type == EFoliageType.SPEEDTREE_TREE_BILLBOARD)
* {
* Shader shader = painter.GetShaderTreeMaster();
* FoliageLog.Assert(shader, "Could not find shader: Critias/SpeedTree_Master! Make sure that it is added to the project and that it compiled!");
*
* FoliageTypeLODTree[] lodTree = type.m_RuntimeData.m_LODDataTree;
*
* for(int i = 0; i < lodTree.Length; i++)
* {
* FoliageTypeLODTree tree = lodTree[i];
*
* Material[] mats = tree.m_Materials;
*
* for(int m = 0; m < mats.Length; m++)
* {
* // Set the new material
* //mats[m] = new Material(mats[m]);
* //mats[m].shader = shader;
*
* // Enable instancing
* //mats[m].enableInstancing = true;
* }
*
* tree.m_Materials = mats;
* }
* }
*/
// We did initialize
type.IsRuntimeInitialized = true;
}
/** To be used at edit-time */
public static void BuildDataPartialEditTime(FoliagePainter painter, FoliageType type)
{
GameObject prefab = type.m_Prefab;
// Update the type
type.Type = type.Type;
FoliageLog.Assert(prefab != null, "Null foliage prefab!");
if (type.m_RuntimeData == null)
{
type.m_RuntimeData = new FoliageTypeRuntimeData();
}
FoliageTypeRuntimeData runtime = type.m_RuntimeData;
List <Material> checkMaterials = new List <Material>();
// Init the SpeedTree data
if (type.IsSpeedTreeType)
{
if (runtime.m_SpeedTreeData == null)
{
runtime.m_SpeedTreeData = new FoliageTypeSpeedTreeData();
}
}
if (type.IsGrassType)
{
// Build the data universally for all grass types
if (runtime.m_LODDataGrass == null)
{
runtime.m_LODDataGrass = new FoliageTypeLODGrass();
}
runtime.m_LODDataGrass.m_Mesh = prefab.GetComponentInChildren <MeshFilter>().sharedMesh;
runtime.m_LODDataGrass.m_Material = prefab.GetComponentInChildren <MeshRenderer>().sharedMaterial;
checkMaterials.Add(runtime.m_LODDataGrass.m_Material);
FoliageLog.Assert(runtime.m_LODDataGrass.m_Mesh != null, "Could not find mesh for type: " + prefab.name + ". Make sure that is has at least one mesh and one material");
FoliageLog.Assert(runtime.m_LODDataGrass.m_Material != null, "Could not find material for type: " + prefab.name + ". Make sure that is has at least one mesh and one material");
}
else
{
LODGroup group = prefab.GetComponent <LODGroup>();
if (group == null)
{
FoliageLog.w("Detected tree: " + prefab.name + " without a lod group. Are you sure that you require a tree for this?");
if (runtime.m_LODDataTree == null || runtime.m_LODDataTree.Length == 0)
{
runtime.m_LODDataTree = new FoliageTypeLODTree[1];
}
runtime.m_LODDataTree[0] = new FoliageTypeLODTree();
runtime.m_LODDataTree[0].m_Mesh = prefab.GetComponentInChildren <MeshFilter>().sharedMesh;
runtime.m_LODDataTree[0].m_Materials = prefab.GetComponentInChildren <MeshRenderer>().sharedMaterials;
runtime.m_LODDataTree[0].m_EndDistance = type.m_RenderInfo.m_MaxDistance;
checkMaterials.AddRange(runtime.m_LODDataTree[0].m_Materials);
}
else
{
List <FoliageTypeLODTree> treeLods = new List <FoliageTypeLODTree>(group.lodCount);
LOD[] lods = group.GetLODs();
for (int i = 0; i < group.lodCount; i++)
{
if (lods[i].renderers[0].gameObject.GetComponent <BillboardRenderer>() != null)
{
// Extract the billboard data
var speedData = runtime.m_SpeedTreeData;
FoliageWindTreeUtilities.ExtractBillboardData(lods[i].renderers[0].gameObject.GetComponent <BillboardRenderer>(), speedData);
continue;
}
FoliageTypeLODTree treeLod = new FoliageTypeLODTree();
MeshRenderer rend = lods[i].renderers[0].gameObject.GetComponent <MeshRenderer>();
MeshFilter filter = lods[i].renderers[0].gameObject.GetComponent <MeshFilter>();
treeLod.m_Mesh = filter.sharedMesh;
treeLod.m_Materials = rend.sharedMaterials;
checkMaterials.AddRange(rend.sharedMaterials);
treeLods.Add(treeLod);
}
runtime.m_LODDataTree = treeLods.ToArray();
// Update the LOD distances
UpdateDistancesLOD(runtime.m_LODDataTree, lods, type.m_RenderInfo.m_MaxDistance, type.IsSpeedTreeType);
}
}
if (checkMaterials.Count > 0)
{
if (type.IsSpeedTreeType)
{
if (type.m_RenderInfo.m_Hue == new Color(0, 0, 0, 0))
{
type.m_RenderInfo.m_Hue = checkMaterials[0].GetColor("_HueVariation");
}
if (type.m_RenderInfo.m_Color == new Color(0, 0, 0, 0))
{
type.m_RenderInfo.m_Color = checkMaterials[0].GetColor("_Color");
}
}
for (int i = 0; i < checkMaterials.Count; i++)
{
if (checkMaterials[i].enableInstancing == false)
{
checkMaterials[i].enableInstancing = true;
FoliageLog.w("Material: [" + checkMaterials[i].name + "] did not had instancing enabled! We enabled it!");
}
}
}
// Moved the build at partial edit-time
if (type.Type == EFoliageType.SPEEDTREE_GRASS)
{
Shader shader = painter.GetShaderGrass();
FoliageLog.Assert(shader, "Could not find shader: Critias/SpeedTree_Grass! Make sure that it is added to the project and that it compiled!");
FoliageTypeLODGrass lodGrass = type.m_RuntimeData.m_LODDataGrass;
// Override the material at runtime
lodGrass.m_Material = new Material(lodGrass.m_Material);
lodGrass.m_Material.shader = shader;
// Enable it for instancing
lodGrass.m_Material.enableInstancing = true;
}
else if (type.Type == EFoliageType.SPEEDTREE_TREE || type.Type == EFoliageType.SPEEDTREE_TREE_BILLBOARD)
{
Shader shader = painter.GetShaderTreeMaster();
FoliageLog.Assert(shader, "Could not find shader: Critias/SpeedTree_Master! Make sure that it is added to the project and that it compiled!");
FoliageTypeLODTree[] lodTree = type.m_RuntimeData.m_LODDataTree;
for (int i = 0; i < lodTree.Length; i++)
{
FoliageTypeLODTree tree = lodTree[i];
Material[] mats = tree.m_Materials;
for (int m = 0; m < mats.Length; m++)
{
// Set the new material
mats[m] = new Material(mats[m]);
mats[m].shader = shader;
// Enable instancing
mats[m].enableInstancing = true;
}
tree.m_Materials = mats;
}
}
// Set the materials the values for enabling the bend stuff if we have it
if (type.IsGrassType)
{
if (type.m_EnableBend)
{
type.m_RuntimeData.m_LODDataGrass.m_Material.EnableKeyword("CRITIAS_DISTANCE_BEND");
}
else
{
type.m_RuntimeData.m_LODDataGrass.m_Material.DisableKeyword("CRITIAS_DISTANCE_BEND");
}
}
}
void Update()
{
#if UNITY_EDITOR
FoliageLog.Assert(m_FoliageData != null);
#endif
// Camera used for culling
m_CurrentFrameCameraCull = m_Settings.m_UsedCameraCulling;
// Camera used for drawing
m_CurrentFrameCameraDraw = m_Settings.m_UsedCameraDrawing;
m_CurrentFrameLayer = LayerMask.NameToLayer(m_Settings.m_UsedLayer);
// Extract the planes
ExtractPlanes(m_CameraPlanes, m_CurrentFrameCameraCull.projectionMatrix * m_CurrentFrameCameraCull.worldToCameraMatrix);
// Set the position
m_CurrentFrameCameraPosition = m_CurrentFrameCameraCull.transform.position;
// Set the bend position
m_CurrentFrameBendPosition = m_Settings.m_BendTransform != null ? m_Settings.m_BendTransform.position : m_CurrentFrameCameraPosition;
// Current cell position
currentCell.Set(m_CurrentFrameCameraPosition);
m_CurrentFrameAllowIndirect = m_Settings.m_AllowDrawInstancedIndirect;
m_DrawStats.Reset();
// Copy the wind for SpeedTree types
for (int i = 0; i < m_FoliageTypesArray.Length; i++)
{
if (m_FoliageTypesArray[i].IsSpeedTreeType)
{
m_FoliageTypesArray[i].CopyBlock();
}
}
bool applyShadowCorrection = m_Settings.m_ApplyShadowPoppingCorrection;
float shadowCorrectionDistanceSqr = m_Settings.m_ShadowPoppingCorrection * m_Settings.m_ShadowPoppingCorrection;
// We iterate only as many cells as we need
FoliageCell.IterateNeighboring(currentCell, m_CellNeighborCount, (int hash) =>
{
FoliageCellDataRuntime data;
if (m_FoliageData.m_FoliageData.TryGetValue(hash, out data))
{
// If it is within distance and in the frustum
float distanceSqr = data.m_Bounds.SqrDistance(m_CurrentFrameCameraPosition);
// Check for the maximum distance
if (distanceSqr <= m_MaxDistanceAllSqr && GeometryUtility.TestPlanesAABB(m_CameraPlanes, data.m_Bounds))
{
// Process the big cells if we are withing the tree distance
if (distanceSqr <= m_MaxDistanceTreeSqr)
{
ProcessCellTree(data, distanceSqr, applyShadowCorrection, shadowCorrectionDistanceSqr, false);
}
// Process subdivided cells only if we have instancing enabled and only if it is within the distance proximity for grass
if (distanceSqr <= m_MaxDistanceGrassSqr && m_Settings.m_DrawInstanced)
{
ProcessCellGrass(data);
}
m_DrawStats.m_ProcessedCells++;
}
else if (distanceSqr <= shadowCorrectionDistanceSqr)
{
ProcessCellTree(data, distanceSqr, applyShadowCorrection, shadowCorrectionDistanceSqr, true);
}
}
});
#if UNITY_EDITOR
if (Time.frameCount % 300 == 0)
{
FoliageLog.i(string.Format("Proc cells:{0} Proc subdiv cells: {1} Proc tree instances: {2} Proc draw calls: {3}",
m_DrawStats.m_ProcessedCells,
m_DrawStats.m_ProcessedCellsSubdiv,
m_DrawStats.m_ProcessedInstances,
m_DrawStats.m_ProcessedDrawCalls));
}
#endif
}
private static void ExtractDetailsFromTerrain(FoliagePainter painter, Terrain terrain, List <FoliageDetailExtracterMapping> mappings, bool disable, bool delete)
{
string label = FoliageGlobals.LABEL_TERRAIN_DETAILS_EXTRACTED + terrain.name;
FoliagePainterEditTime edit = painter.GetEditTime;
int detailMapSizeW = terrain.terrainData.detailWidth;
int detailMapSizeH = terrain.terrainData.detailHeight;
float patchSizeW = terrain.terrainData.size.x / detailMapSizeW;
float patchSizeH = terrain.terrainData.size.z / detailMapSizeH;
int extracted = 0;
// Extract the types for all the mapping
for (int m = 0; m < mappings.Count; m++)
{
int layer = mappings[m].m_DetailLayer;
int mapping = mappings[m].m_FoliageTypeHash;
float density = mappings[m].m_ExtractedDensity;
FoliageLog.Assert(painter.HasFoliageType(mapping), "Must have foliage hash!!");
// Get the foliage type
FoliageType type = painter.GetFoliageTypeByHash(mapping);
DetailPrototype proto = terrain.terrainData.detailPrototypes[layer];
// If we should align to the surface
bool followTerrainNormal = type.m_PaintInfo.m_SurfaceAlign;
Vector2 alignPercentage = type.m_PaintInfo.m_SurfaceAlignInfluence;
// Get the terrain data
int[,] data = terrain.terrainData.GetDetailLayer(0, 0, detailMapSizeW, detailMapSizeH, layer);
// Iterate data
for (int i = 0; i < detailMapSizeH; i++)
{
for (int j = 0; j < detailMapSizeW; j++)
{
// j,i not i,j
int count = data[j, i];
if (count > 0)
{
// Minimum 1 never 0
count = Mathf.Clamp(Mathf.CeilToInt(count * density), 1, count + 1);
// Map from local space cell space to local terrain space
Vector2 cellMin = new Vector2(patchSizeW * i, patchSizeH * j);
Vector2 cellMax = cellMin + new Vector2(patchSizeW, patchSizeH);
for (int d = 0; d < count; d++)
{
Vector3 randomInCell;
randomInCell.x = Random.Range(cellMin.x, cellMax.x);
randomInCell.z = Random.Range(cellMin.y, cellMax.y);
randomInCell.y = 0;
randomInCell = FoliageTerrainUtilities.TerrainLocalToTerrainNormalizedPos(randomInCell, terrain);
float y = FoliageTerrainUtilities.TerrainHeight(randomInCell, terrain);
// Build the rotation
Quaternion rotation = Quaternion.identity;
if (followTerrainNormal)
{
Quaternion slopeOrientation = Quaternion.LookRotation(FoliageTerrainUtilities.TerrainNormal(randomInCell, terrain)) * Quaternion.Euler(90, 0, 0);
// How much we orient towards the slope
rotation = Quaternion.Slerp(rotation, slopeOrientation,
Random.Range(alignPercentage.x, alignPercentage.y));
}
// Rotate around the Y axis
rotation *= Quaternion.Euler(0, Random.Range(0, 360), 0);
// Random in cell in world position
randomInCell = FoliageTerrainUtilities.TerrainNormalizedToWorldPos(randomInCell, terrain);
randomInCell.y = y;
Vector3 scale;
float x = Random.Range(proto.minWidth, proto.maxWidth);
scale.x = x;
scale.z = x;
scale.y = Random.Range(proto.minHeight, proto.maxHeight);
// Construct a foliage instance based on the foliage type data
FoliageInstance instance = new FoliageInstance();
// Build the foliage data based on the type
instance.m_Position = randomInCell;
instance.m_Rotation = rotation;
instance.m_Scale = scale;
// Instantiate at a random pos in that cell
edit.AddFoliageInstance(mapping, instance, label);
extracted++;
}
}
// If we should delete
if (delete)
{
data[j, i] = 0;
}
}
} // End detail array iteration
// If we deleted set the new detail layer data
if (delete)
{
terrain.terrainData.SetDetailLayer(0, 0, layer, data);
}
} // End types iteration
// If we should disable the trees and foliage draw
if (disable)
{
terrain.drawTreesAndFoliage = false;
}
// If we deleted anything we need to save
if (delete)
{
UnityEditor.SceneManagement.EditorSceneManager.MarkSceneDirty(terrain.gameObject.scene);
}
FoliageLog.i("Extracted details: " + extracted + " from: " + terrain.name);
}
