From: Allan Schaffer (allan++at++sgi.com)
Date: 08/06/2003 22:43:46
Hi Chris,
Dorosky, Christopher G wrote:
> Certain models, have certain polygons, that won't intersect.
> Still there is no intersection with certain polygons.
> This accounts for about 5% of them. The rest work fine.
>
> I turned on the option in the segset stuff, to intersect with the geode (bounding sphere), and so it intersects with it just fine.
> Of couse, it looks like it is intersecting with air, so I need the tighter test.
>
> This is Performer 2.2.x, where x is something greater than 10
There have been a few intersection fixes since 2.2.10 (+/-), do any of
these seem to apply in your case?
Fixed in 3.0.1:
o There were Culling / Intersection problems with
DoubleDCS's. Some details were left out of the man
page. Updated the man page and corresponding sample
code. (SCR 880379)
Fixed in 2.5.2:
o The intersection functions pfScene::isect and
pfNode::isect either crash or return incorrect results
on scene graphs deeper than 32 levels.
Fixed in 2.4.1:
o Intersection testing was limited to geosets with fewer
than 2^16 triangles. This limit has been increased to
2^32 (no SCR number).
o A successful intersection with an indexed triangle
strip geoset did not fill the 'prim' field of pfHit.
This has been fixed (SCR 816478).
o Intersections and picking with an off-axis viewing
frustum was not functional. This has been fixed, in
both the 2.4.1 and 2.2.12 versions (SCR 803898).
Allan
-- Allan Schaffer allan++at++sgi.com Engr. Manager, Core Rendering 1-650-933-2160 Silicon Graphics http://www.sgi.com
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