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Subject: 
Re: Fun with LDView Fly Through (A Minifig's Eye View)
Newsgroups: 
lugnet.cad, lugnet.cad.dev, lugnet.cad.dev.mac
Date: 
Mon, 19 Mar 2007 17:57:03 GMT
Viewed: 
12 times
  
--snip--

   You’re right - it does work. I retried it with L3P output and the view is positioned correctly. My previous effort used POV-Ray code from Anton’s converter. That’s not necessarily the reason it didn’t work before, though: it was late and I was tired. At any rate, LDView is certainly exonerated (not that it was accused).

This isn’t the exact same position as my previous LDView screenshot, but it confirms it works OK:

This POV is kind of trippy

There seems to be an awful lot of refraction looking through that canopy, incidentally, and some unexpected opacity in the front. I see povray did print a bunch of parse warnings related to refraction, and two rendering warnings:
Rendering Warning: Camera is inside a non-hollow object. Fog and participating media may not work as expected.
Possible Rendering Error: Maximum trace level reached! If your scene contains black spots read more about the max_trace_level setting in the documentation!
so there are still some things to figure out.

Thanks,

Jim

Hi Jim,

The second error there is certainly to blame for the opacity. You need to add a line
global_settings { max_trace_level N }
where N is high enough (probably 8 will do). Partially this is because LDraw parts are constructed of surfaces rather than solid blocks of material so that you end up passing through at least two transparent objects every time you go through a clear brick.

Of course opacity is not neccessarily all that incorrect as a quick glance at a brick built windscreen will show :)

Tim



Message has 1 Reply:
  Re: Fun with LDView Fly Through (A Minifig's Eye View)
 
(...) Thanks for the tip, Tim! The point about LDraw (and POV-Ray) objectives being comprised of surfaces rather than solids is worth keeping in mind, too. After re-rendering the little test scene with maxtracelevel set to 8, I realized that the (...) (18 years ago, 19-Mar-07, to lugnet.cad, lugnet.cad.dev, lugnet.cad.dev.mac, FTX)

Message is in Reply To:
  Re: Fun with LDView Fly Through (A Minifig's Eye View)
 
(...) You're right - it does work. I retried it with L3P output and the view is positioned correctly. My previous effort used POV-Ray code from Anton's converter. That's not necessarily the reason it didn't work before, though: it was late and I was (...) (18 years ago, 19-Mar-07, to lugnet.cad, lugnet.cad.dev, lugnet.cad.dev.mac, FTX)

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