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 CAD / LDraw Files / Parts / 5660
5659  |  5661
Subject: 
Re: Conditional lines on sloped wedge parts 43720 and 43721
Newsgroups: 
lugnet.cad.dat.parts
Date: 
Mon, 25 Apr 2005 00:37:58 GMT
Viewed: 
4864 times
  
In lugnet.cad.dat.parts, Steve Bliss wrote:
I'm pretty sure that's going to be the problem with *any* partition of this
surface into polygons.  Having a mathematical description of the surface would
be good, because then we could potentially create a primitive for the surface,
and rendering programs could substitute a smooth-curve construct for the
primitive.

I have made a 43720.inc for the test of the coming L3PPARTS.
The mathematical description of the surface is:
    80x + 40y + yz = 0
and I have used the POV primitive quadric:
    quadric {
       <0,0,0>, <0,0,1>, <80,40,0>, 0
       clipped_by { box { <-20,0,-40>, <0,20,40> } }
    }
/Lars



Message has 1 Reply:
  Re: Conditional lines on sloped wedge parts 43720 and 43721  [DAT]
 
(...) Looks good. Should we create a new primitive with the next dimensions:? 2 24 0 0 1 0 1 1 2 24 1 0 -1 0 1 -1 2 24 0 0 1 1 0 -1 2 24 0 1 1 0 1 -1 and a POV-quadric version in the coming L3PPARTS. As the outer twisted surface of the parts with (...) (20 years ago, 25-Apr-05, to lugnet.cad.dat.parts)

Message is in Reply To:
  Re: Conditional lines on sloped wedge parts 43720 and 43721
 
(...) I'm pretty sure that's going to be the problem with *any* partition of this surface into polygons. Having a mathematical description of the surface would be good, because then we could potentially create a primitive for the surface, and (...) (20 years ago, 19-Apr-05, to lugnet.cad.dat.parts, FTX)

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