yair reshef

hi list, a small problem pooped up when working on an opengl keystone

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.

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.

sliding-texture

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 

http://en.wikipedia.org/wiki/Keystone_%28architecture%29

In video, it's called a keystone because when the projected image is 

On Nov 15, 2006, at 12:35 PM, yair reshef wrote:

> hi list, a small problem pooped up when working on an opengl 

> i render to texture and dump onto a gl.nurb surface, manipulating 

> the ctlmatrix to fix the keystone (where those this word come from?

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.

> 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?


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 ;)

> 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

> In video, it's called a keystone because when the projected image is

> On Nov 15, 2006, at 12:35 PM, yair reshef wrote:

> > hi list, a small problem pooped up when working on an opengl

> > i render to texture and dump onto a gl.nurb surface, manipulating

> > the ctlmatrix to fix the keystone (where those this word come from?

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?
>

sliding texture