public Matrix4 GetViewMatrix(Matrix4 globalModelMatrix)
{
Vector4 lookat = new Vector4(Vector3.UnitZ, 1);
Vector4 up = new Vector4(Vector3.UnitY, 1);
lookat = lookat.ApplyOnVector(globalModelMatrix);
up = up.ApplyOnVector(globalModelMatrix);
var position = Vector3.Zero.ApplyOnPoint(globalModelMatrix);
return MatrixHelper.LookAt(position, position + lookat.Xyz, up.Xyz);
}
