Stream: brlcad

Topic: concave arb8

Sean (Aug 05 2025 at 04:59):

Here's some examples of the new concave arb8 support:

image.png

Sean (Aug 05 2025 at 05:15):

image.png
even non-planar concave should work, as seen in that example. still keeps it a polysolid though.

Sean (Aug 08 2025 at 13:28):

Here's an old arb8 that "worked" previously but was actually giving wrong shotline results due to an issue with the plane equations, now fixed with the new support detection:
Screenshot 2025-08-08 at 4.31.53 AM.png

Sean (Aug 08 2025 at 13:30):

Here's another example case shown in side by side comparison. The arb8 on the left is the old code, right is new. There was a subtle concave surface on the end resulting in nirt incorrectly reporting entry/exit hits near that end. Now corrected:
Screenshot 2025-08-08 at 4.22.49 AM.png

Last updated: Sep 13 2025 at 00:46 UTC