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 CAD / Ray-Tracing / *822 (-10)
  Re: Reiterate: How to make a squish matrix?
 
(...) Yes, but you cannot put (1-y/L) into a transformation matrix. It is a *function* that changes for each 3D point. The purpose of a tranformation matrix is to precalculate a matrix of *numbers* that gets multiplied by all the points of the (...) (23 years ago, 25-Apr-01, to lugnet.cad, lugnet.cad.ray)
 
  Re: Reiterate: How to make a squish matrix?
 
that shouldn't be too hard either. just operate the matrix on the points alone. if your cilinder has it's axle around the Y axle. L is the length of the cilinder and if it starts at 0 0 0 you could use (1-y/L) 0 0 0 1 0 0 0 (1-y/L) this would turn (...) (23 years ago, 25-Apr-01, to lugnet.cad, lugnet.cad.ray)
 
  Re: Reiterate: How to make a squish matrix?
 
(...) Yah. Bummer. Thanks, though, to Dan and Steve. Cheers, - jsproat (23 years ago, 25-Apr-01, to lugnet.cad, lugnet.cad.ray)
 
  A question on making movies on a low resolution
 
I would like to know is there any good resolution betwen 320x200 and 160x120? because It takes too long to render in 320x200 and 160x120 is too small (23 years ago, 25-Apr-01, to lugnet.cad.ray)
 
  Re: Reiterate: How to make a squish matrix?
 
(...) Yes, but it's not what Sproat needs. He needs to scale X and Z as a function of Y. Something like: x' = xy Which is something transform matrices cannot do. Steve (23 years ago, 25-Apr-01, to lugnet.cad, lugnet.cad.ray)
 
  Re: Reiterate: How to make a squish matrix?  [DAT]
 
i thought you just had to multiply your matrix with something like 1 0 0 0 2 0 0 0 1 this would make Y 2 times as long. Not? Koen Don Heyse <dheyse@hotmail.spam....away.com> schreef in berichtnieuws GCBD52.3qI@lugnet.com... (...) (URL) (...) target (...) (23 years ago, 25-Apr-01, to lugnet.cad, lugnet.cad.ray)
 
  Re: Reiterate: How to make a squish matrix?
 
A quick keyword search turns up this page which states that it is NOT possible (in one of the first few paragraphs). (...) (23 years ago, 24-Apr-01, to lugnet.cad, lugnet.cad.ray)
 
  Reiterate: How to make a squish matrix?
 
(...) Whoops! Thank you Rui for helping me straighten this out -- I'm not doing this in LDraw. I'm just looking for a way to do this with a 4x4 matrix. My target app is POVRay, but I figured this question would be generic enough for people in the (...) (23 years ago, 24-Apr-01, to lugnet.cad, lugnet.cad.ray)
 
  RE: I need a voluntary to render a pov-ray animation
 
(...) It's just a processor that fast is of no use if you don't have the RAM to support it. A better choice would have been a slower processor with more RAM. (...) Did it? I've had no problem with running 15 hour renders on a Pentium 1 166Mhz with (...) (23 years ago, 22-Apr-01, to lugnet.cad.ray)
 
  Re: I need a voluntary to render a pov-ray animation
 
(...) Well my last one was 32MB of ram no 3d card, AMD K6 233mhz (...) What about if windows stops working eh? (...) (23 years ago, 22-Apr-01, to lugnet.cad.ray)


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