Increase precision in centroid calculation to fix #61 #62
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stevengj
reviewed
Aug 30, 2022
| centroid = vector3_plus(centroid, vertices[nv]); | ||
| prsm->centroid = centroid = vector3_scale(1.0 / ((double)num_vertices), centroid); | ||
| centroid = vector3_plus(centroid, vector3_scale(1.0 / (double)num_vertices, vertices[nv])); | ||
| prsm->centroid = centroid; |
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This doesn't increase the precision, it just re-orders the scale factor; there's no guarantee that it will be more accurate.
Probably some coplanar check just needs a floating-point tolerance.
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This doesn't increase the precision, it just re-orders the scale factor; there's no guarantee that it will be more accurate.
Probably some coplanar check just needs a floating-point tolerance.
Naturally you are right, i left comment here #61 (comment) with detailed description why this error arrise.
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Here is the link for the issue #61
As one can see from description error in initilization appears to be originated from some numerical instability during basic operations.
Added: