/// <summary>
/// PerspectiveCamera
/// </summary>
/// <param name="c2w">c2w</param>
/// <param name="proj">camer2screen</param>
/// <param name="f">film</param>
/// <param name="lensr">lenser</param>
/// <param name="focald">focald</param>
/// <param name="screenWindow">float[4]</param>
///
public PerspectiveCamera(AnimatedTransform c2w, float[] screenWindow, float sopen, float sclose, float lensr, float focald, float fov, Film f) : base(c2w, LR.Perspective(fov, 1e-2f, 1000f), screenWindow, sopen, sclose, lensr, focald, f)
{
dxCamera = RasterToCamera.Caculate(new Point3(1, 0, 0)) - RasterToCamera.Caculate(new Point3(0, 0, 0));
dyCamera = RasterToCamera.Caculate(new Point3(0, 1, 0)) - RasterToCamera.Caculate(new Point3(0, 0, 0));
}
