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| 19:40.28 | Notify | 03BRL-CAD:starseeker * 70886 brlcad/trunk/src/librt/bbox.c: The INFINITY assignments in shoot.c lines 993-1025 reach the rt_in_rpp calculations, and in cases where these values are multiplied by 0 a multiplication using an actual C99 inf results in a nan that causes all subsequent comparisons to return false. However, when falling back to our C89 compatibility definitions for INFINITY we get typical numerical |
| 19:40.32 | Notify | behavior (0*INFINITY == 0, not nan) which results in different behavior of the comparisons. For specific grazing cases, this results in different raytracing behavor as boxes reject and accept different rays. This needs a conceptual fix, but for the moment use additional checks to avoid doing comparisons in rt_in_rpp that will produce different results using the C89 numerical version of INFINITY (since all of those |
| 19:40.36 | Notify | tests would fail in the C99 case, we can achieve the same result if we just skip them when we have the INFINITY value).... |
| 21:04.57 | Stragus | Infinities should be avoided if you can use DBL_MAX instead, Inf have _very_ poor performance on many chips |
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