Hughes, B. <omn### [at] charternet> wrote:
> As is
> known, bounded_by retains the inner regions from the object being used for
> the bounding, therefore clipped_by will do the same.

  Actually it's a bit more complicated than that... :)

  Due to how it works, a bounding object can be in a completely different
location than the object it is bounding (that is, the object it is
bounding is nowhere inside the bounding object), yet the object can
still be visible (eg. if the bounding object is between the camera and
the bounded object).
  This is not the case with clipped_by: If the clipped object is nowhere
inside the clipping object, it will not be visible in any case.

  This behaviour of bounding objects allows some cool tricks to be done.

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -

Post a reply to this message