public bool placeTree(ref TreeTextures t, ref CustomTerrain terrain, ref Vector3 p)
{
//Check steepness
TextureConstraints cons = treescontrainst[t];
return(terrain.getSteepness(p.x, p.z) <= cons.max_steepness && p.y >= cons.min_altitude * highest_altitude && p.y <= cons.max_altitude * highest_altitude);
}
public TreeGroup(String filename, float size, float sizeVariance, SpeedWindWrapper speedWind, Forest forest, List<Vector3> locations)
{
if (!initialized)
{
Initialize();
}
name = String.Format("Forest: {0} File: {1} Instances: {2}", forest.Name, filename, locations.Count);
this.forest = forest;
this.speedWind = speedWind;
speedTree = new SpeedTreeWrapper();
speedTree.TextureFlip = true;
LoadTree(filename);
speedTree.BranchWindMethod = WindMethod.WindGPU;
speedTree.FrondWindMethod = WindMethod.WindGPU;
speedTree.LeafWindMethod = WindMethod.WindGPU;
float originalSize = 0f;
float variance = 0f;
speedTree.GetTreeSize(ref originalSize, ref variance);
speedTree.OriginalSize = originalSize;
speedTree.SetTreeSize(size, sizeVariance);
treeTextures = speedTree.Textures;
// make sure the tree doesn't have too many leaf texture groups
Debug.Assert(treeTextures.LeafTextureFilenames.Length <= 3);
// for trees with 3 leaf textures, reduce the number of rocking groups to 2
// (from the default of 3), so that we don't overflow the number of available shader
// param registers
if (treeTextures.LeafTextureFilenames.Length == 3)
{
speedTree.NumLeafRockingGroups = 2;
}
speedTree.Compute(SpeedTreeUtil.ToSpeedTree(Matrix4.Identity), 1, true);
speedTree.TreePosition = SpeedTreeUtil.ToSpeedTree(Vector3.Zero);
// set lod limits
speedTree.SetLodLimits(nearLOD, farLOD);
// create the geometry object
geometry = new TreeGeometry();
//
// Setup branches
//
// create the render operation
branchRenderOp = new RenderOperation();
branchRenderOp.operationType = OperationType.TriangleStrip;
branchRenderOp.useIndices = true;
// set up the material.
branchMaterial = SetupTreeMaterial("SpeedTree/Branch", treeTextures.BranchTextureFilename, treeTextures.SelfShadowFilename, GenerateNormalMapTextureName(treeTextures.BranchTextureFilename), speedTree.BranchMaterial, !normalMapped, branchTechnique);
// get number of branch LODs
uint nBranchLODs = speedTree.NumBranchLodLevels;
// allocate branch buffers
branchVertexBuffers = new VertexData[nBranchLODs];
branchIndexBuffers = new IndexData[nBranchLODs];
for (short i = 0; i < nBranchLODs; i++)
{
// set up the vertex and index buffers for the branch geometry
speedTree.GetGeometry(geometry, SpeedTreeWrapper.GeometryFlags.BranchGeometry, i, -1, -1);
BuildIndexedBuffer(geometry.Branches, true, out branchVertexBuffers[i], out branchIndexBuffers[i]);
}
//
// Setup fronds
//
// create the render operation
frondRenderOp = new RenderOperation();
frondRenderOp.operationType = OperationType.TriangleStrip;
frondRenderOp.useIndices = true;
// set up the material
frondMaterial = SetupTreeMaterial("SpeedTree/Frond", treeTextures.CompositeFilename, treeTextures.SelfShadowFilename, null, speedTree.FrondMaterial, true, 0);
uint nFrondLODs = speedTree.NumFrondLodLevels;
// allocate frond buffer arrays
frondVertexBuffers = new VertexData[nFrondLODs];
frondIndexBuffers = new IndexData[nFrondLODs];
for ( short i = 0; i < nFrondLODs; i++ )
{
// build the frond geometry for each LOD
speedTree.GetGeometry(geometry, SpeedTreeWrapper.GeometryFlags.FrondGeometry, -1, i, -1);
BuildIndexedBuffer(geometry.Fronds, false, out frondVertexBuffers[i], out frondIndexBuffers[i]);
}
//
// Setup Leaves
//
TreeCamera saveCam = SpeedTreeWrapper.Camera;
TreeCamera treeCamera = new TreeCamera();
treeCamera.position = SpeedTreeUtil.ToSpeedTree(Vector3.Zero);
treeCamera.direction = SpeedTreeUtil.ToSpeedTree(new Vector3(1,0,0));
SpeedTreeWrapper.Camera = treeCamera;
// set up render ops
leaf0RenderOp = new RenderOperation();
leaf0RenderOp.operationType = OperationType.TriangleList;
leaf0RenderOp.useIndices = true;
leaf1RenderOp = new RenderOperation();
leaf1RenderOp.operationType = OperationType.TriangleList;
leaf1RenderOp.useIndices = true;
// set up the material
leafMaterial = SetupTreeMaterial("SpeedTree/Leaf", treeTextures.CompositeFilename, null, null, speedTree.LeafMaterial, true, 0);
uint nLeafLODs = speedTree.NumLeafLodLevels;
// allocate leaf buffer arrays
leafVertexBuffers = new VertexData[nLeafLODs];
leafIndexBuffers = new IndexData[nLeafLODs];
float [] lodLeafAdjust = speedTree.LeafLodSizeAdjustments;
for ( short i = 0; i < nLeafLODs; i++ )
{
// build the leaf geometry for each LOD
speedTree.GetGeometry(geometry, SpeedTreeWrapper.GeometryFlags.LeafGeometry, -1, -1, i);
BuildLeafBuffer(geometry.Leaves0, lodLeafAdjust[i], out leafVertexBuffers[i], out leafIndexBuffers[i]);
}
// restore the camera afte getting leaf buffers
SpeedTreeWrapper.Camera = saveCam;
bounds = new AxisAlignedBox();
// build all the trees and accumulate bounds
foreach (Vector3 loc in locations)
{
SpeedTreeWrapper treeInstance = speedTree.MakeInstance();
treeInstance.OriginalSize = originalSize;
Tree t = new Tree(this, treeInstance, loc);
bounds.Merge(t.Bounds);
trees.Add(t);
}
boundingRadius = (bounds.Maximum - bounds.Minimum).Length / 2;
// create the buckets
branchBuckets = new Dictionary<int, List<Tree>>[nBranchLODs];
frondBuckets = new Dictionary<int, List<Tree>>[nFrondLODs];
leafBuckets = new Dictionary<int, List<Tree>>[nLeafLODs];
billboardBucket = new Dictionary<int, List<Tree>>[1];
// initialize the bucket dictionaries
for (int i = 0; i < nBranchLODs; i++)
{
branchBuckets[i] = new Dictionary<int, List<Tree>>();
}
for (int i = 0; i < nFrondLODs; i++)
{
frondBuckets[i] = new Dictionary<int, List<Tree>>();
}
for (int i = 0; i < nLeafLODs; i++)
{
leafBuckets[i] = new Dictionary<int, List<Tree>>();
}
billboardBucket[0] = new Dictionary<int, List<Tree>>();
allGroups.Add(this);
}