//not main thread
public override void Collect(VolumeContainer container)
{
Area defaultArea = PathFinder.GetArea(0);
float maxSlopeCos = Mathf.Cos((float)((double)template.maxSlope * Math.PI / 180.0));
float voxelSize = template.voxelSize;
Vector3 realChunkPos = template.realOffsetedPosition;
float chunkPosX = realChunkPos.x;
float chunkPosZ = realChunkPos.z;
int offsetX = Mathf.RoundToInt(chunkPosX / voxelSize);
int offsetZ = Mathf.RoundToInt(chunkPosZ / voxelSize);
int sizeX = template.lengthX_extra;
int sizeZ = template.lengthZ_extra;
foreach (var terrain in terrainsInfo)
{
Volume terrainVolume;
if (terrain.alphaMap != null)
{
terrainVolume = new Volume(template.lengthX_extra, template.lengthZ_extra, terrain.possibleArea);
}
else
{
terrainVolume = new Volume(template.lengthX_extra, template.lengthZ_extra, defaultArea);
}
terrainVolume.terrain = true;
Vector3[] vrts;
int[] trs;
GetTerrainMesh(terrain, out vrts, out trs);
//actual rasterization
for (int i = 0; i < trs.Length; i += 3)
{
Vector3 A = vrts[trs[i]];
Vector3 B = vrts[trs[i + 1]];
Vector3 C = vrts[trs[i + 2]];
int passability = CalculateWalk(A, B, C, maxSlopeCos) ? 3 : 1;//if true then walkable else slope;
int minX = Mathf.Clamp(Mathf.FloorToInt(SomeMath.Min(A.x, B.x, C.x) / voxelSize) - offsetX, 0, sizeX);
int maxX = Mathf.Clamp(Mathf.CeilToInt(SomeMath.Max(A.x, B.x, C.x) / voxelSize) - offsetX, 0, sizeX);
int minZ = Mathf.Clamp(Mathf.FloorToInt(SomeMath.Min(A.z, B.z, C.z) / voxelSize) - offsetZ, 0, sizeZ);
int maxZ = Mathf.Clamp(Mathf.CeilToInt(SomeMath.Max(A.z, B.z, C.z) / voxelSize) - offsetZ, 0, sizeZ);
for (int x = minX; x < maxX; x++)
{
for (int z = minZ; z < maxZ; z++)
{
float pointX = (x * voxelSize) + chunkPosX;
float pointZ = (z * voxelSize) + chunkPosZ;
if (SomeMath.LineSide(A.x, A.z, B.x, B.z, pointX, pointZ) <= 0.001 &
SomeMath.LineSide(B.x, B.z, C.x, C.z, pointX, pointZ) <= 0.001 &
SomeMath.LineSide(C.x, C.z, A.x, A.z, pointX, pointZ) <= 0.001)
{
terrainVolume.SetVoxelLight(x, z, SomeMath.CalculateHeight(A, B, C, pointX, pointZ), passability);
}
}
}
}
//var areaLibrary = PathFinder.settings.areaLibrary;
SetTerrainArea(terrainVolume, terrain, defaultArea); //apply terrain area info if it exist
terrainVolume.SetVolumeMinimum(-1000f);
//trees
Volume treeVolume = base.CollectTrees(terrain);
//connecting terrain and trees to single volume
if (treeVolume != null)
{
terrainVolume.Subtract(treeVolume);
terrainVolume.ConnectToItself();
terrainVolume.Override(treeVolume);
}
//sent terrain to container
container.AddVolume(terrainVolume);
}
}