[OpenSCAD] F5 works, but F6 gives: ERROR: CGAL error in CGAL_Nef_polyhedron3():

Uwe Schächterle corpsman at corpsman.de
Tue Jan 16 06:32:00 EST 2018


my fault, i do not run Windows, (i tested it on Windows, there it works
with the version from 6.01.) is there a way to get the Linux version
from 6.01 ? to double check?

i am using Ubuntu Mate64 and tested it with the nightly build from
tonight, see attachment.
- Corpsman



On 01/15/2018 09:05 PM, Uwe Schächterle wrote:
> Hello all,
> 
> i made a little "thing" (attached below).
> 
> If i press F5 i get it rendered with no problem. By pressing F6 i get :
> 
> ERROR: CGAL error in CGAL_Nef_polyhedron3(): CGAL ERROR: assertion
> violation! Expr: ss_plane.has_on(sv_prev->point()) File:
> /usr/include/CGAL/Nef_3/polygon_mesh_to_nef_3.h Line: 294
> 
> i am using OpenSCAD version 2017.12.21
> 
> sometimes it will be rendered, but without the polyhedron.
> 
> can you help me, what i did wrong ?
> 
> 
> /*
>  * Thing starts here
>  */
> translate([0,35,0]) bodenprofil();
> bodenprofil();
> 
> translate([3+4,0,5+3])cube([6,40,3]);
> translate([40-7,0,5+3])cube([6,40,3]);
> 
> translate([3+5,18,5+3])cube([4,4,60]);
> 
> translate([3+4.25,16,5+3+60])
> difference()
> {
>   cube([5.5,8,7]);
>   translate([2,-1,2]) cube([1.5,10,6]);
> }
> 
> module bodenprofil()
> {
> translate([0,5,0]) rotate([90,0,0]) linear_extrude(height = 5)
> polygon([[0,0],[3,0],[3,5],[7,5],[7,8],[18,8],[18,5],[28,5],[28,8],[39,8],[39,5],[43,5],[43,0],[46,0],[46,11],[0,11]]);
> }
> 
> 
> polyhedron([
> [39-5,0,11],
> [43-5,0,11],
> [43-5,5,11],
> [39-5,5,11],
> 
> [12,18,58-5],
> [12,18,58],
> [12,22,58],
> [12,22,58-5]
> ],
>  [
>   [0,1,2,3],  // bottom
>   [4,5,1,0],  // front
>   [7,6,5,4],  // top
>   [5,6,2,1],  // right
>   [6,7,3,2],  // back
>   [7,4,0,3]]
> );
> 
> polyhedron([
> [39-5,0+35,11],
> [43-5,0+35,11],
> [43-5,5+35,11],
> [39-5,5+35,11],
> 
> [12,18,58-5],
> [12,18,58],
> [12,22,58],
> [12,22,58-5]
> ],
>  [
>   [0,1,2,3],  // bottom
>   [4,5,1,0],  // front
>   [7,6,5,4],  // top
>   [5,6,2,1],  // right
>   [6,7,3,2],  // back
>   [7,4,0,3]]
> );
> /*
>  * Thing stops here
>  */
> 
> best regards corpsman
> 
> 
> 
> _______________________________________________
> OpenSCAD mailing list
> Discuss at lists.openscad.org
> http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org
> 

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