distance between two points on the surface

Jun WANG's picture
Jun WANG
Fri, 11/07/2008 - 22:55
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Do you know how to calculate the shortest distance (Geodesic distance) of two points on the surface??? Thanks a lot!

Jun WANG's picture
Jun WANG
Sat, 11/08/2008 - 00:54

Nobody knows ???

Rob Bachrach's picture
Rob Bachrach
Mon, 11/10/2008 - 15:43

I don't know for sure, but I would consider something like this:
- Create a Geom_Line using your two points
- Turn that into a Geom_TrimmedCurve
- Project that curve on the surface with GeomProjLib::Project
- Get the arc length of the projected curve with GProp_CGProps (see GProp_GProps for help

Rob

Jun WANG's picture
Jun WANG
Tue, 11/11/2008 - 22:57

Thanks for your suggestion. Actually, the projection direction is the key point. Whatever, thanks a lot.