// Draw and process routines
private void DrawProcessedLOD(ref TreeSystemLODData[] data, ref int maxLod3D, ref TreeSystemLODInstance lodInst, ref TreeSystemStoredInstance inst, ref bool shadowsOnly)
{
int lod = lodInst.m_LODLevel;
// Draw the stuff with the material specific for each LOD
Draw3DLOD(ref data[lod], ref lodInst, ref inst, ref shadowsOnly);
}
public void Draw3DLOD(ref TreeSystemLODData data, ref TreeSystemLODInstance lodInst, ref TreeSystemStoredInstance inst, ref bool shadowsOnly)
{
m_TempLOD[0] = lodInst.m_LODTransition;
data.m_Block.SetFloatArray(m_ShaderIDFadeLODDetail, m_TempLOD);
m_TempLOD[0] = lodInst.m_LODFullFade;
data.m_Block.SetFloatArray(m_ShaderIDFadeLODFull, m_TempLOD);
for (int mat = 0; mat < data.m_Materials.Length; mat++)
{
Graphics.DrawMesh(data.m_Mesh, inst.m_PositionMtx, data.m_Materials[mat], m_UsedLayerId, m_Settings.m_UsedCamera, mat, data.m_Block,
shadowsOnly == false ? UnityEngine.Rendering.ShadowCastingMode.On : UnityEngine.Rendering.ShadowCastingMode.ShadowsOnly,
true);
m_DataIssuesDrawCalls++;
}
}
public void DrawBillboardLOD(ref TreeSystemLODData data, ref TreeSystemLODInstance lodInst, ref TreeSystemStoredInstance inst)
{
data.m_Block.SetVector(m_ShaderIDFadeBillboard, new Vector4(lodInst.m_LODTransition, 1.0f - lodInst.m_LODFullFade, 0, 0));
// Set extra scale and stuff
Vector4 extra = inst.m_WorldScale;
extra.w = inst.m_WorldRotation;
// Set positions used in shader
data.m_Block.SetVector(m_ShaderIDBillboardScaleRotation, extra);
m_BillboardTempPos.m03 = inst.m_WorldPosition.x;
m_BillboardTempPos.m13 = inst.m_WorldPosition.y;
m_BillboardTempPos.m23 = inst.m_WorldPosition.z;
for (int mat = 0; mat < data.m_Materials.Length; mat++)
{
Graphics.DrawMesh(data.m_Mesh, m_BillboardTempPos, data.m_Materials[mat], m_UsedLayerId, m_Settings.m_UsedCamera, mat, data.m_Block, true, true);
m_DataIssuesDrawCalls++;
}
}
private TreeSystemTerrain ProcessTerrain(Terrain terrain, int cellSize, GameObject cellHolder)
{
TreeSystemTerrain systemTerrain = new TreeSystemTerrain();
// Set system terrain data
systemTerrain.m_ManagedTerrain = terrain;
systemTerrain.m_ManagedTerrainBounds = terrain.GetComponent <TerrainCollider>().bounds;
systemTerrain.m_CellCount = TerrainUtils.GetCellCount(terrain, cellSize);
systemTerrain.m_CellSize = cellSize;
int cellCount;
BoxCollider[,] collidersBox;
SphereCollider[,] collidersSphere;
// Gridify terrain
TerrainUtils.Gridify(terrain, cellSize, out cellCount, out collidersBox, out collidersSphere, cellHolder, null);
// Temporary structured data
TreeSystemStructuredTrees[,] str = new TreeSystemStructuredTrees[cellCount, cellCount];
List <TreeSystemStoredInstance>[,] strInst = new List <TreeSystemStoredInstance> [cellCount, cellCount];
List <TreeSystemStructuredTrees> list = new List <TreeSystemStructuredTrees>();
// Insantiate the required data
for (int r = 0; r < cellCount; r++)
{
for (int c = 0; c < cellCount; c++)
{
TreeSystemStructuredTrees s = new TreeSystemStructuredTrees();
// Set the bounds, all in world space
s.m_BoundsBox = collidersBox[r, c].bounds;
s.m_BoundsSphere = new TreeSystemBoundingSphere(s.m_BoundsBox.center, collidersSphere[r, c].radius);
// Set it's new position
s.m_Position = new RowCol(r, c);
str[r, c] = s;
strInst[r, c] = new List <TreeSystemStoredInstance>();
list.Add(s);
}
}
TreeInstance[] terrainTreeInstances = terrain.terrainData.treeInstances;
TreePrototype[] terrainTreeProto = terrain.terrainData.treePrototypes;
Vector3 sizes = terrain.terrainData.size;
for (int i = 0; i < terrainTreeInstances.Length; i++)
{
GameObject proto = terrainTreeProto[terrainTreeInstances[i].prototypeIndex].prefab;
if (ShouldUsePrefab(proto) < 0)
{
continue;
}
// Get bounds for that mesh
Bounds b = proto.transform.Find(proto.name + "_LOD0").gameObject.GetComponent <MeshFilter>().sharedMesh.bounds;
// Calculate this from normalized terrain space to terrain's local space so that our row/col info are correct.
// Do the same when testing for cell row/col in which the player is, transform to terrain local space
Vector3 pos = TerrainUtils.TerrainToTerrainPos(terrainTreeInstances[i].position, terrain);
int row = Mathf.Clamp(Mathf.FloorToInt(pos.x / sizes.x * cellCount), 0, cellCount - 1);
int col = Mathf.Clamp(Mathf.FloorToInt(pos.z / sizes.z * cellCount), 0, cellCount - 1);
pos = TerrainUtils.TerrainToWorldPos(terrainTreeInstances[i].position, terrain);
Vector3 scale = new Vector3(terrainTreeInstances[i].widthScale, terrainTreeInstances[i].heightScale, terrainTreeInstances[i].widthScale);
float rot = terrainTreeInstances[i].rotation;
int hash = TUtils.GetStableHashCode(proto.name);
Matrix4x4 mtx = Matrix4x4.TRS(pos, Quaternion.Euler(0, rot * Mathf.Rad2Deg, 0), scale);
TreeSystemStoredInstance inst = new TreeSystemStoredInstance();
inst.m_TreeHash = hash;
inst.m_PositionMtx = mtx;
inst.m_WorldPosition = pos;
inst.m_WorldScale = scale;
inst.m_WorldRotation = rot;
inst.m_WorldBounds = TUtils.LocalToWorld(ref b, ref mtx);
strInst[row, col].Add(inst);
}
// Generate the mesh that contain all the billboards
for (int r = 0; r < cellCount; r++)
{
for (int c = 0; c < cellCount; c++)
{
if (strInst[r, c].Count <= 0)
{
continue;
}
// Sort based on the tree hash so that we don't have to do many dictionary look-ups
strInst[r, c].Sort((x, y) => x.m_TreeHash.CompareTo(y.m_TreeHash));
// Set the new instances
str[r, c].m_Instances = strInst[r, c].ToArray();
// Build the meshes for each cell based on tree type
List <TreeSystemStoredInstance> singleType = new List <TreeSystemStoredInstance>();
int lastHash = strInst[r, c][0].m_TreeHash;
foreach (TreeSystemStoredInstance inst in strInst[r, c])
{
// If we have a new hash, consume all the existing instances
if (inst.m_TreeHash != lastHash)
{
TreeSystemPrototypeData data = GetPrototypeWithHash(lastHash);
BuildTreeTypeCellMesh(cellHolder, str[r, c], singleType, data);
singleType.Clear();
// Update the hash
lastHash = inst.m_TreeHash;
}
// Add them to a list and when the hash changes begin the next generation
singleType.Add(inst);
}
if (singleType.Count > 0)
{
TreeSystemPrototypeData data = GetPrototypeWithHash(singleType[0].m_TreeHash);
BuildTreeTypeCellMesh(cellHolder, str[r, c], singleType, data);
singleType.Clear();
}
}
}
// Set the cells that contain the trees to the system terrain
systemTerrain.m_Cells = list.ToArray();
// Return it
return(systemTerrain);
}
// Draw and process routines
private void DrawProcessedLOD(ref TreeSystemLODData[] data, ref int maxLod3D, ref TreeSystemLODInstance lodInst, ref TreeSystemStoredInstance inst, ref bool shadowsOnly)
{
int lod = lodInst.m_LODLevel;
// Draw the stuff with the material specific for each LOD
Draw3DLOD(ref data[lod], ref lodInst, ref inst, ref shadowsOnly);
if (lod == maxLod3D && lodInst.m_LODFullFade < 1)
{
// Since we only need for the last 3D lod the calculations...
DrawBillboardLOD(ref data[lod + 1], ref lodInst, ref inst);
}
}
// TODO: see from the list which trees fit in here
private TreeSystemTerrain ProcessTerrain(Terrain terrain, int cellSize, GameObject cellHolder, List <GameObject> extraTrees)
{
TreeSystemTerrain systemTerrain = new TreeSystemTerrain();
// Set system terrain data
systemTerrain.m_ManagedTerrain = terrain;
systemTerrain.m_ManagedTerrainBounds = terrain.GetComponent <TerrainCollider>().bounds;
systemTerrain.m_ManagedTerrainLocalToWorld = terrain.transform.localToWorldMatrix;
systemTerrain.m_ManagedTerrainWorldToLocal = terrain.transform.worldToLocalMatrix;
systemTerrain.m_ManagedTerrainSizes = terrain.terrainData.size;
systemTerrain.m_CellCount = TerrainUtils.GetCellCount(terrain, cellSize);
systemTerrain.m_CellSize = cellSize;
int cellCount;
BoxCollider[,] collidersBox;
SphereCollider[,] collidersSphere;
// Gridify terrain
TerrainUtils.Gridify(terrain, cellSize, out cellCount, out collidersBox, out collidersSphere, cellHolder, null);
// Temporary structured data
TreeSystemStructuredTrees[,] str = new TreeSystemStructuredTrees[cellCount, cellCount];
List <TreeSystemStoredInstance>[,] strInst = new List <TreeSystemStoredInstance> [cellCount, cellCount];
List <TreeSystemStructuredTrees> list = new List <TreeSystemStructuredTrees>();
// Insantiate the required data
for (int r = 0; r < cellCount; r++)
{
for (int c = 0; c < cellCount; c++)
{
TreeSystemStructuredTrees s = new TreeSystemStructuredTrees();
// Set the bounds, all in world space
s.m_BoundsBox = collidersBox[r, c].bounds;
s.m_BoundsSphere = new TreeSystemBoundingSphere(s.m_BoundsBox.center, collidersSphere[r, c].radius);
// Set it's new position
s.m_Position = new RowCol(r, c);
str[r, c] = s;
strInst[r, c] = new List <TreeSystemStoredInstance>();
list.Add(s);
}
}
// Delete cells since they might cause physics problems
if (m_DeleteCellsAfterGridify)
{
for (int i = 0; i < cellCount; i++)
{
for (int j = 0; j < cellCount; j++)
{
DestroyImmediate(collidersBox[i, j].gameObject);
}
}
}
int treeInstancesCount = 0, treeExtraCount = 0;
TreeInstance[] terrainTreeInstances = terrain.terrainData.treeInstances;
TreePrototype[] terrainTreeProto = terrain.terrainData.treePrototypes;
Vector3 sizes = terrain.terrainData.size;
for (int i = 0; i < terrainTreeInstances.Length; i++)
{
GameObject proto = terrainTreeProto[terrainTreeInstances[i].prototypeIndex].prefab;
if (ShouldUsePrefab(proto) < 0)
{
continue;
}
treeInstancesCount++;
// Get bounds for that mesh
Bounds b = proto.transform.Find(proto.name + "_LOD0").gameObject.GetComponent <MeshFilter>().sharedMesh.bounds;
// Calculate this from normalized terrain space to terrain's local space so that our row/col info are correct.
// Do the same when testing for cell row/col in which the player is, transform to terrain local space
Vector3 pos = TerrainUtils.TerrainToTerrainPos(terrainTreeInstances[i].position, terrain);
int row = Mathf.Clamp(Mathf.FloorToInt(pos.x / sizes.x * cellCount), 0, cellCount - 1);
int col = Mathf.Clamp(Mathf.FloorToInt(pos.z / sizes.z * cellCount), 0, cellCount - 1);
pos = TerrainUtils.TerrainToWorldPos(terrainTreeInstances[i].position, terrain);
Vector3 scale = new Vector3(terrainTreeInstances[i].widthScale, terrainTreeInstances[i].heightScale, terrainTreeInstances[i].widthScale);
float rot = terrainTreeInstances[i].rotation;
int hash = TUtils.GetStableHashCode(proto.name);
Matrix4x4 mtx = Matrix4x4.TRS(pos, Quaternion.Euler(0, rot * Mathf.Rad2Deg, 0), scale);
TreeSystemStoredInstance inst = new TreeSystemStoredInstance();
inst.m_TreeHash = hash;
inst.m_PositionMtx = mtx;
inst.m_WorldPosition = pos;
inst.m_WorldScale = scale;
inst.m_WorldRotation = rot;
inst.m_WorldBounds = TUtils.LocalToWorld(ref b, ref mtx);
strInst[row, col].Add(inst);
}
List <GameObject> containedTrees = new List <GameObject>();
// Change if we're going to use something diff than 50 for max extent
Bounds terrainExtendedBounds = systemTerrain.m_ManagedTerrainBounds;
terrainExtendedBounds.Expand(new Vector3(0, 50, 0));
// Same as a instance with minor diferences
for (int i = 0; i < extraTrees.Count; i++)
{
GameObject treeInstance = extraTrees[i];
// If the terrain contains the stuff
if (terrainExtendedBounds.Contains(treeInstance.transform.position) == false)
{
continue;
}
treeExtraCount++;
// Add the tree to the list of trees for removal
containedTrees.Add(treeInstance);
// Owner
GameObject proto = GetPrefabOwner(treeInstance);
// Get bounds for that mesh
Bounds b = proto.transform.Find(proto.name + "_LOD0").gameObject.GetComponent <MeshFilter>().sharedMesh.bounds;
// Calculate this from normalized terrain space to terrain's local space so that our row/col info are correct.
// Do the same when testing for cell row/col in which the player is, transform to terrain local space
Vector3 pos = TerrainUtils.TerrainToTerrainPos(TerrainUtils.WorldPosToTerrain(treeInstance.transform.position, terrain), terrain);
int row = Mathf.Clamp(Mathf.FloorToInt(pos.x / sizes.x * cellCount), 0, cellCount - 1);
int col = Mathf.Clamp(Mathf.FloorToInt(pos.z / sizes.z * cellCount), 0, cellCount - 1);
pos = treeInstance.transform.position;
Vector3 scale = treeInstance.transform.localScale;
float rot = treeInstance.transform.rotation.eulerAngles.y * Mathf.Deg2Rad;
// Set the hash
int hash = TUtils.GetStableHashCode(proto.name);
// Set the mtx
Matrix4x4 mtx = Matrix4x4.TRS(pos, Quaternion.Euler(0, rot * Mathf.Rad2Deg, 0), scale);
TreeSystemStoredInstance inst = new TreeSystemStoredInstance();
inst.m_TreeHash = hash;
inst.m_PositionMtx = mtx;
inst.m_WorldPosition = pos;
inst.m_WorldScale = scale;
inst.m_WorldRotation = rot;
inst.m_WorldBounds = TUtils.LocalToWorld(ref b, ref mtx);
strInst[row, col].Add(inst);
}
// Remove the items from the extra trees
foreach (GameObject tree in containedTrees)
{
extraTrees.Remove(tree);
}
// Generate the mesh that contain all the billboards
for (int r = 0; r < cellCount; r++)
{
for (int c = 0; c < cellCount; c++)
{
if (strInst[r, c].Count <= 0)
{
continue;
}
// Sort based on the tree hash so that we don't have to do many dictionary look-ups
strInst[r, c].Sort((x, y) => x.m_TreeHash.CompareTo(y.m_TreeHash));
// Set the new instances
str[r, c].m_Instances = strInst[r, c].ToArray();
// Build the meshes for each cell based on tree type
List <TreeSystemStoredInstance> singleType = new List <TreeSystemStoredInstance>();
int lastHash = strInst[r, c][0].m_TreeHash;
foreach (TreeSystemStoredInstance inst in strInst[r, c])
{
// If we have a new hash, consume all the existing instances
if (inst.m_TreeHash != lastHash)
{
TreeSystemPrototypeData data = GetPrototypeWithHash(lastHash);
if (ShouldBuildBillboardBatch(data.m_TreePrototype))
{
BuildTreeTypeCellMesh(cellHolder, str[r, c], singleType, data);
}
singleType.Clear();
// Update the hash
lastHash = inst.m_TreeHash;
}
// Add them to a list and when the hash changes begin the next generation
singleType.Add(inst);
}
if (singleType.Count > 0)
{
TreeSystemPrototypeData data = GetPrototypeWithHash(singleType[0].m_TreeHash);
if (ShouldBuildBillboardBatch(data.m_TreePrototype))
{
BuildTreeTypeCellMesh(cellHolder, str[r, c], singleType, data);
}
singleType.Clear();
}
}
}
// Set the cells that contain the trees to the system terrain
systemTerrain.m_Cells = list.ToArray();
// Print extraction data
Debug.Log("Extracted for terrain: " + terrain.name + " instance trees: " + treeInstancesCount + " extra trees: " + treeExtraCount);
// Return it
return(systemTerrain);
}
public void DrawBillboardLOD(ref TreeSystemLODData data, ref TreeSystemLODInstance lodInst, ref TreeSystemStoredInstance inst)
{
data.m_Block.SetVector(m_ShaderIDFadeLOD, new Vector4(lodInst.m_LODTransition, 1.0f - lodInst.m_LODFullFade, 0, 0));
// Set extra scale and stuff
Vector4 extra = inst.m_WorldScale;
extra.w = inst.m_WorldRotation;
data.m_Block.SetVector(m_ShaderIDBillboardScaleRotation, extra);
for (int mat = 0; mat < data.m_Materials.Length; mat++)
{
Graphics.DrawMesh(data.m_Mesh, inst.m_PositionMtx, data.m_Materials[mat], 0, null, mat, data.m_Block, true, true);
m_DataIssuesDrawCalls++;
}
}
public void Draw3DLOD(ref TreeSystemLODData data, ref TreeSystemLODInstance lodInst, ref TreeSystemStoredInstance inst)
{
data.m_Block.SetVector(m_ShaderIDFadeLOD, new Vector4(lodInst.m_LODTransition, lodInst.m_LODFullFade, 0, 0));
for (int mat = 0; mat < data.m_Materials.Length; mat++)
{
Graphics.DrawMesh(data.m_Mesh, inst.m_PositionMtx, data.m_Materials[mat], 0, null, mat, data.m_Block, true, true);
m_DataIssuesDrawCalls++;
}
}
public void Draw3DLOD(ref TreeSystemLODData data, ref TreeSystemLODInstance lodInst, ref TreeSystemStoredInstance inst)
{
m_TempLOD[0] = lodInst.m_LODTransition;
data.m_Block.SetFloatArray(m_ShaderIDFadeLODDetail, m_TempLOD);
m_TempLOD[0] = lodInst.m_LODFullFade;
data.m_Block.SetFloatArray(m_ShaderIDFadeLODFull, m_TempLOD);
for (int mat = 0; mat < data.m_Materials.Length; mat++)
{
Graphics.DrawMesh(data.m_Mesh, inst.m_PositionMtx, data.m_Materials[mat], m_UsedLayerId, m_UsedCamera, mat, data.m_Block, true, true);
m_DataIssuesDrawCalls++;
}
}
