public override void Calculate(TerrainModel model, MeshGeometry3D mesh)
{
var normals = MeshGeometryHelper.CalculateNormals(mesh);
var texcoords = new PointCollection();
for (int i = 0; i < normals.Count; i++)
{
double slopedir = Math.Atan2(normals[i].Y, normals[i].X) * 180 / Math.PI;
if (slopedir < 0)
{
slopedir += 360;
}
double u = slopedir / 360;
texcoords.Add(new Point(u, u));
}
TextureCoordinates = texcoords;
Material = MaterialHelper.CreateMaterial(Brush);
}
public override void Calculate(TerrainModel model, MeshGeometry3D mesh)
{
var normals = MeshGeometryHelper.CalculateNormals(mesh);
var texcoords = new PointCollection();
var up = new Vector3D(0, 0, 1);
for (int i = 0; i < normals.Count; i++)
{
double slope = Math.Acos(Vector3D.DotProduct(normals[i], up)) * 180 / Math.PI;
double u = slope / 40;
if (u > 1)
{
u = 1;
}
if (u < 0)
{
u = 0;
}
texcoords.Add(new Point(u, u));
}
TextureCoordinates = texcoords;
Material = MaterialHelper.CreateMaterial(Brush);
}
