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Hello,
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<div>I appear to have a problem for which I cannot figure out a solution.</div>
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<div>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?</div>
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<div>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?</div>
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<div>A consequence of the extra volume is that I cannot create a sensible mesh.</div>
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<div>Any ideas would be greatly appreciated.</div>
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<div>Thanks very much,</div>
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<div>Peter.</div>
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<div>PS, I could send a simple script file if that would help.</div>
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<br style="font-size: 14px; font-family: -apple-system, BlinkMacSystemFont, sans-serif;">
Associate Professor Peter Johnston (FAustMS, FIMA)<br style="font-size: 14px; font-family: -apple-system, BlinkMacSystemFont, sans-serif;">
School of Environment and Science<br style="font-size: 14px; font-family: -apple-system, BlinkMacSystemFont, sans-serif;">
Griffith University | Nathan | QLD 4111 | Technology (N44) Room 3.19<br style="font-size: 14px; font-family: -apple-system, BlinkMacSystemFont, sans-serif;">
T +61 7 373 57748| F +61 7 373 57656 Email p.johnston@griffith.edu.au</div>
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