project curve to surface

how do you prevent curves from double projecting on a surface that is say spherical. Basically restricting it so that once it projects on to the surface it will not project on any part of the surface past it.

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Permalink Reply by Yoann Mescam (Systemiq) on October 5, 2011 at 9:22am

The only way I found is to cull the undesired projections, by example by keeping only the closest projected curve.

Permalink Reply by Michael Pryor on October 5, 2011 at 9:46am

yea thats what I have been doing, it gets tedious when your surface is tripling and quadrupling back, causing a lot of projections. Maybe I'll try remap.

Permalink Reply by Yoann Mescam (Systemiq) on October 5, 2011 at 10:21am

Another solution would be to divide the curve in points, pull the points to the surface (Pull Point component with C=true) and reconstruct the curve from the pulled points.

May give some weird results sometimes perhaps.

Edit: actually, for a real projection following a direction, better use same strategy with SCX (Surface | Line) with input line= line between each point and each point+projection direction and Lf= true.

Permalink Reply by Michael Pryor on October 5, 2011 at 10:28am

good point, i'll give it a try.

Permalink Reply by Yoann Mescam (Systemiq) on October 5, 2011 at 11:40am

Interesting problem so I worked a bit more on it, let me know how it works.

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