Tue, 10/28/2008 - 18:18

Forums:

I just found a shape that, according to OCC, is valid, but I think it shouldn't.

DRAW test:

Draw[1]> pload ALL

Draw[2]> polyline w 0 0 0 0 100 0 -100 200 0 100 200 0 0 100 0 0 0 0

Draw[3]> axo

Draw[4]> mkplane f w

Draw[5]> clear w

w

Draw[6]> checkshape f

This shape seems to be valid

Draw[7]> checkshape w

This shape seems to be valid

The wire is connected twice (or, in other words, shares 2 vertices by position). Shouldn't that be invalid? Is there any method/class that will tell me when I get such a shape? BRepCheck_Wire::SelfIntersect didn't detect it as such.

Wed, 10/29/2008 - 10:02

Draw[23]> bopcheck f

Self-intersection near vertices

x1 x2

Self-intersection near vertices

x3 x4

Self-intersection near vertex and edge

x5 x6

Self-intersection near vertex and edge

x7 x8

Self-intersection near vertex and edge

x9 x10

Self-intersection near vertex and edge

x11 x12

Self-intersection near vertex and edge

x13 x14

Self-intersection near vertex and edge

x15 x16

Self-intersection near vertex and edge

x17 x18

Self-intersection near vertex and edge

x19 x20

Coincidance of edges

x21 x22

Coincidance of edges

x23 x24

Wed, 10/29/2008 - 10:22

BOPTools_Checker did the trick.

Thanks.