AC3D Forums - View Single Post - Generated AC3D objects

Andy · 8th July 2018, 04:23 PM

Your file generation looks great. From a quick look, I think the problem is that the first three vertices of the complicated polygons are an obtuse angle compared with the other vertices.This is forcing the normal calculation to be not what you want.

If you use Surface->change-vertex-order and then resize/undo to force normal recalculation (must fix the change-vertex-order code to recalc normals...) that should bring color back to those surfaces.

Alternatively, triangulate, or divide up the large polygons.

8th July 2018, 04:23 PM	#2
Andy Administrator Professional user Join Date: Jun 2003 Posts: 4,565	Re: Generated AC3D objects - normals problem Your file generation looks great. From a quick look, I think the problem is that the first three vertices of the complicated polygons are an obtuse angle compared with the other vertices.This is forcing the normal calculation to be not what you want. If you use Surface->change-vertex-order and then resize/undo to force normal recalculation (must fix the change-vertex-order code to recalc normals...) that should bring color back to those surfaces. Alternatively, triangulate, or divide up the large polygons.