Extrema for large circles/line

P G's picture
P G
Wed, 05/16/2007 - 14:01
Forums: 
Other usage issues

Hello

The Geom extrema API's are not finding extrema/intersections for
very large circle/line.

Create a circle with centre 0 0 0 and radius 50000.
create a line passing ( 0 0 -50500, 0 0 50500) thru this circle.
Finding extrema gives only one solution ( the farthest point).

For small circles ( of radius 100) , the API gives 4 solutions.
Why not for the earlier case.

regards

PG

Jane Hu's picture
Jane Hu
Thu, 10/18/2007 - 23:17

Hello, PG

I am trying to calculate curve interior extrema with respect to x/y/z axis, and I am trying to use GeomAPI_ExtremaCurveCurve.
Are you using GeomAPI_ExtremaCurveCurve to calculate here too? Are you calculating for the circle's extrema with respect to z axis? (I am thinking 2 solutions then?)

Thanks.

JH