Pulling Relative Transforms

Caleb J. Howard calebh at adelphia.net
Thu Jul 15 16:14:16 EDT 2004


I'd sure appreciate it.  I'm back on it today, hoping to find a solution 
using my patented "Infinite Monkey" methodology.  ;-)

Thanks!

-caleb

Mark Story wrote:
> Hi Caleb,
> 
> I don't know if you've already figured this out or not but I need to do 
> something similar to this in the next few days, if by chance you're 
> question isn't answered by then (the list is *so* quiet) I'll post my 
> findings.
> 
> 
> --Mark
> 
> 
> Caleb J. Howard wrote:
> 
>> Does anyone have a snippit of code to pull the relative transform 
>> between different objects?
>>
>> In geo1->sop1, I want to find the position of geo2->sop2 in local 
>> coordinates.  (a la the UVTexture SOp's "Perspective from Camera" option)
>>
>> I have the feeling that I can use getWorldTransform() on geo1 and 
>> geo2, invert one, and multiply the matrices together to get the right 
>> cumulative transform, but I thought I'd throw the question out to all 
>> you experienced folks, in case there's a more direct method, or in 
>> case one of you has the code at hand.
>>
>> Being as slow as I am, it tends to take me hours to accomplish what I 
>> suspect would take one of you folks seconds.
>>
>> Any hints?
>>
>> Thanks!
>>
>> -caleb
>>
>> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>>  Caleb J. Howard - calebh at adelphia.net (home) - caleb at rhythm.com (work)
>>     http://www.vigilante.net/~howards/Caleb/Personal/CalebMain.html
>>       'It was for this you were called, created, formed and made.'
>> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>>
>>
> 
> 


-- 
-caleb

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
  Caleb J. Howard - calebh at adelphia.net (home) - caleb at rhythm.com (work)
     http://www.vigilante.net/~howards/Caleb/Personal/CalebMain.html
       'It was for this you were called, created, formed and made.'
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=




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