POV-Ray : Newsgroups : povray.binaries.animations : Absolutely relative woes : Re: Absolutely relative woes Server Time
24 Jun 2024 00:41:57 EDT (-0400)
  Re: Absolutely relative woes  
From: Dick Balaska
Date: 24 Feb 2020 22:44:49
Message: <5e549831@news.povray.org>
Am 2/24/20 5:05 PM, also sprach Dick Balaska:
> I see a matrix multiplication difference (there are two different 
> multiplies and I used one).
> I can't believe I never saw this before.

This was cool.  I set a breakpoint in my SDL debugger just before the 
vrotate.  Once that hit, I set a breakpoint in the POV-Ray c++.
I then stepped through the vrotate while at the same time stepping 
through my library.  Lo, I got the exact same results.

I'm in agony.

When I first saw this phenomenon, I said "interesting, the vector looks 
correct, just the wrong length.  But I'm not doing any vlength work so 
that's just a coincidence."  Wrong!  I scaled the Tugboat by 0.7 so he'd 
fit in the tub better.  I need a drink.

Rendered 49,882,521,600 of 49,882,521,600 pixels (100%)

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