From: Marcin Romaszewicz (marcin++at++asmodean.engr.sgi.com)
Date: 01/18/2001 11:39:58
We don't have any papers on the algorithms, but they're pretty common and
the code is isn't too hard to follow. Here's a little more on what they
do:
pfdNewCube - makes six faces out of 12 triangles
pfdNewSphere - creates a cube that contains no more than the specified
number of triangles and then normalizes all the points
to make a sphere. This doesn't make a very uniform
distribution, but it's not too bad.
pfdNewCircle - creates a circle with the specified number of triangles.
It's cut up into slices like a pizza.
pfdNewRing - same as above, except it's unfilled
pfdNewCylinder - Creates circles for top and bottom like pfdNewCircle and
the cylinder body by connecting corresponding slices in
the two circles.
pfdNewPipe - like a cylinder, except the endcaps aren't there
pfdNewCone - Makes a circle for the base then creates triangles from the
thick ends of the slices and the point of the cone.
pfdNewPyramid - square base and triangles defined by the pyramid point and
base sides.
pfdNewArrow - A pyramid on top of a box
pfdNewDoubleArrow - Two pyramids with a box in between them
-- Marcin
On Thu, 18 Jan 2001, Markus Som wrote:
> Hello! I'm searching for a detail description of pfdGSet.c. TO say it more
> precisely, I'm searching for theory papers for the algorithms, which are
> behind the pfdNewSphere etc.
> Does anyone have something .. please
>
> thx
> markus
>
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