Hello, I appear to have a problem for which I cannot figure out a solution.
I have an annular hemispherical volume created between to hemispheres centred on the origin. I would like to divide the volume into two parts in a special way using Boolean operations. To define a sub-volume of the initial volume by defining four points on the surface of the inner sphere, create a “quadrilateral” on the inner surface by joining the four points in order using circles through the origin. (I think that these should be parts of great circles on the inner surface?). Then I create a line loop and a surface, and finally extrude the surface away from the origin to create a volume. Perhaps a .geo script would help here? When I perform BooleanDifferences and BooleanIntersections I end up with three volumes instead of two. The reason I get the third volume is that the surface patch that I create does not fit exactly onto the original spherical surface. Is there any way that I can force the patch to be part of the spherical surface? A consequence of the extra volume is that I cannot create a sensible mesh. Any ideas would be greatly appreciated. Thanks very much, Peter. PS, I could send a simple script file if that would help. --------------------------------------------------------------------- Associate Professor Peter Johnston (FAustMS, FIMA) School of Environment and Science Griffith University | Nathan | QLD 4111 | Technology (N44) Room 3.19 T +61 7 373 57748| F +61 7 373 57656 Email [email protected]
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