public Vec3 WorldFromTrack2D(Vec3 p)
{
Scene scene = SharedWorld.MainScene;
Camera cam = scene.Camera;
Box3 vvol = cam.ViewVol;
float camdist = cam.Translation.Length;
float zdist = camdist - ZOffset;
Vec3 w = new Vec3();
Vec3 v = new Vec3();
Matrix mtx = new Matrix();
float tmp = 0.5f * vvol.Height / vvol.min.z;
v.x = p.x * tmp * zdist;
v.y = p.y * tmp * zdist;
v.z = -zdist;
cam.TotalTransform(mtx);
mtx.Transform(v, w);
SharedWorld.Trace(System.String.Format(Name + " Track({0}, {1}, {2}) -> World({3}, {4}, {5})\n", p.x, p.y, p.z, w.x, w.y, w.z));
return(w);
}
public Vec3 WorldFromScreen(Vec3 pos)
{
Scene scene = SharedWorld.MainScene;
Camera cam = scene.Camera;
Box3 vv = cam.ViewVol;
Vec3 p = Normalize(pos);
Matrix mtx = cam.GetViewTrans();
Vec3 w = new Vec3(vv.min.x + p.x * vv.Width,
vv.max.y - p.y * vv.Height,
vv.min.z - p.z * vv.Depth + ZOffset);
float tmp = -0.5f * w.z / cam.Hither;
tmp = -w.z / cam.Hither;
w.x *= tmp;
w.y *= tmp;
cam.TotalTransform(mtx);
mtx.Transform(w, w);
SharedWorld.Trace(System.String.Format(Name + " Screen({0}, {1}, {2}) -> World({3}, {4}, {5})\n", pos.x, pos.y, pos.z, w.x, w.y, w.z));
return(w);
}