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Subject: 
Reiterate: How to make a squish matrix?
Newsgroups: 
lugnet.cad, lugnet.cad.ray
Date: 
Tue, 24 Apr 2001 19:40:34 GMT
Viewed: 
600 times
  
In lugnet.cad, Jeremy H. Sproat writes:
Is there a way I can make a matrix that will "squish" an object?

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 .cad group.

So, to reiterate:  I'm looking for a 4x4 transform matrix that "squishes" an
object; e.g. a cylinder into a truncated cone.

I don't know if it's possible to get this transformation from a matrix.  I
thought I've seen one before, but I can't find any reference to one now.

Cheers,
- jsproat



Message has 1 Reply:
  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)

Message is in Reply To:
  How to make a squish matrix?
 
Hey all, Is there a way I can make a matrix that will "squish" an object? For example, I have a cylinder I want to squish into a truntcated cone. I could have sworn this was possible (I thought this was how perspective was rendered, by squishing the (...) (23 years ago, 24-Apr-01, to lugnet.cad)

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