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Le 12/05/2019 à 03:20, Mike Horvath a écrit :
> I've created some illustrations showing different graphical projections.
>
> https://commons.wikimedia.org/wiki/File:Graphical_projection_comparison.png
>
> I'm trying to figure out how to illustrate "cabinet projection" however.
> The existing "cavalier projection" is nearly identical, except that
> "cabinet projection" is half as long in the z direction. I could shrink
> the model of the house along this axis, but I'd rather find a way that
> only alters the camera statement. Any ideas?
>
> Here is the camera code I use for "cabinet projection":
>
> #local cam_area = 2 * 5/4;
> #local cam_loca = vnormalize(-z/sind(045)+y-x) * cam_dist;
> #local cam_dirc = vnormalize(+z/sind(045)-y+x);
> #local cam_rgvc = +x * cam_area;
> #local cam_upvc = +y * cam_area;
> #local cam_tran = transform
> {
> translate +y * cam_move
> }
>
> // requires the updated version of "screen.inc" available here:
> // http://news.povray.org/povray.text.scene-files/thread
> /%3C581be4f1%241%40news.povray.org%3E/
> #include "screen.inc"
>
> Set_Camera_Orthographic(true)
> Set_Camera_Transform(cam_tran)
> Set_Camera_Alt(cam_loca, cam_dirc, cam_rgvc, cam_upvc)
>
> Thanks!!
>
> Michael
Old, very old experiment, at http://jgrimbert.free.fr/pov/labo/
I did not test with latest povray.
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