sliding texture


    Nov 15 2006 | 12:35 pm
    hi list, a small problem pooped up when working on an opengl keystone method. i render to texture and dump onto a gl.nurb surface, manipulating the ctlmatrix to fix the keystone (where those this word come from?) problem is when moving the camera the texture slides off the nurb surface. please look at this patch and enlighten me. other then that this is quite a handy thing, use and abuse.

    • Nov 15 2006 | 1:06 pm
      The keystone is the wedge-shaped stone that fits into the top middle of an arch. It's a "key stone" because it's responsible for keeping the arch from falling apart.
      In video, it's called a keystone because when the projected image is tilted it looks like... a keystone.
      :)
      -evan
      On Nov 15, 2006, at 12:35 PM, yair reshef wrote:
      > hi list, a small problem pooped up when working on an opengl > keystone method. > i render to texture and dump onto a gl.nurb surface, manipulating > the ctlmatrix to fix the keystone (where those this word come from?
    • Nov 16 2006 | 11:14 am
      thnx for the trivia (i know alot of girlz how would die to know this...) aside from that, and from connecting each gl object position to camera position value, is there a solution floating about? I'm getting sick of solving my own problems ;)
      On 11/15/06, evan.raskob [lists] wrote: > > The keystone is the wedge-shaped stone that fits into the top middle > of an arch. It's a "key stone" because it's responsible for keeping > the arch from falling apart. > > http://en.wikipedia.org/wiki/Keystone_%28architecture%29 > > In video, it's called a keystone because when the projected image is > tilted it looks like... a keystone. > > :) > > -evan > > > > On Nov 15, 2006, at 12:35 PM, yair reshef wrote: > > > hi list, a small problem pooped up when working on an opengl > > keystone method. > > i render to texture and dump onto a gl.nurb surface, manipulating > > the ctlmatrix to fix the keystone (where those this word come from? >