public MeshData GetMeshData(Chunk chunk, MeshLod meshLod)
{
Vector3 chunkCenterLocation = chunk.GetCenterPosition();
// The number of points to skip for each mesh vertex
int borderSize = 1;
int vertexInterval = meshLod.GetInterval();
// Get points necessary for mesh, including a border of one borderSize unit
IEnumerable <Point> allPoints = chunk.GetPoints(vertexInterval, borderSize);
int chunkPointCount = space.GetChunkCount(vertexInterval, 0);
int totalPointCount = space.GetChunkCount(vertexInterval, borderSize);
int borderPointCount = totalPointCount - chunkPointCount;
MeshHelper meshHelper = space.GetMeshHelper(chunk, vertexInterval, borderSize);
MeshDataBuilder meshDataBuilder = new MeshDataBuilder(meshHelper, chunkPointCount, borderPointCount, vertexInterval, borderSize);
foreach (Point point in allPoints)
{
// Get the height value for each point
float value = terrainTransform.GetValue(point);
// Verticies are centered in space give limitations on space size of meshes
Vector3 vertex = point.GetPosition()
+ space.GetNormalFromPosition(point.GetPosition()) * value
- chunkCenterLocation;
meshDataBuilder.AddVertex(vertex);
}
return(meshDataBuilder.Build());
}
public Vector3 GetSurfaceNormal(Vector3 position)
{
return(space.GetNormalFromPosition(position));
}