extend geodesic line beyond input-points (shortpath)

hi there,

is ther any possibility not to end the geodesic line at the 2 input points?

i'd like to extend them to the edge of the control surface.

that would make it much easier to position geodesic lines on doublecourved surfaces.

thanks

andreas

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Replies to This Discussion

Permalink Reply by David Rutten on September 23, 2011 at 7:28am

Hi Andreas,

unfortunately a geodesic in Rhino is defined as the shortest curve between two points. It would therefore not be obvious in what direction to extend the geodesic. There might not be a point-pair on the surface edge that will cause the geodesic to intersect the two defined points.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Andreas Ploderer on September 23, 2011 at 7:56am

thanks for the quick reply!

i think a geodesic line is determined by any two points on a surface (they don't have to be on the edge of it). like a straight line ist determined by two points on a plane.

the only exeptions i can think of are symmetrical curved surfaces, when the axis of symmetry goes through the two ponts that define the geodesic curve (on spheres for example).

well - i might be wrong anyways.

one example from the real world: when you start gluing a straight paperstrip (=geodesic line) on a courved surface you can't change the direction of it any more..

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