public void ComputeNormals()
{
var builder = new MeshBuilder(false);
builder.AddPolygon(new List<Vector3>
{
new Vector3(0f, 0f, 0f),
new Vector3(7f, 0f, 0f),
new Vector3(7f, 0f, 7f),
});
Assert.IsNull(builder.Normals);
Assert.IsFalse(builder.HasNormals);
builder.ComputeNormalsAndTangents(MeshFaces.Default);
Assert.IsTrue(builder.HasNormals);
Assert.AreEqual(3, builder.Normals.Count);
}
/// <summary>
/// Creates a MeshGeometry3D object from the loaded file. Polygons are triangulated using triangle fans.
/// </summary>
/// <returns>
/// A MeshGeometry3D.
/// </returns>
public MeshGeometry3D CreateMeshGeometry3D(ModelInfo info = default(ModelInfo))
{
var mb = new MeshBuilder(info.Normals, info.Tangents);
foreach (var p in this.Vertices)
{
mb.Positions.Add(p);
}
foreach (var face in this.Faces)
{
mb.AddTriangleFan(face);
}
mb.ComputeNormalsAndTangents(info.Faces);
return mb.ToMeshGeometry3D();
}