Points "inside" curves are wrongly identified as "outside"

[oat]

As shown in the GH file attached below, the 18 points inside 18 polylines were all wrongly identified as outside the curve by the “Points in Curves” component.

May I ask why I have such error, considering that all curves and points are on the xy plane?

error_to_identify_point_inside_curve.gh (25.8 KB)

[martinsiegrist]

Why do you graft the curves?

[oat]

I want to get the point inside each curve.

[ftzuk]

Hmmm projecting all the geometry onto the same plane gives me a result:

[martinsiegrist]

I found rebuilding the curves helps.

[oat]

Thanks, @ftzuk

However, I’m unable to replicate your successful implementation.

As shown below, the points projected to a flat surface on xy plane have different z coordinates, and I’m not sure why.

May I ask the expression you used for the unit z vector in the “project point” and “project curve to surface” components?

Thanks.

error_to_identify_point_inside_curve___v02.gh (24.9 KB)

[oat]

indeed, thanks, @martinsiegrist

I wonder why “rebuilding curve” is the solution in this situation… and how to check if a curve need to be rebuilt…

error_to_identify_point_inside_curve___v03.gh (25.8 KB)

[martinsiegrist]

I think something might be wrong with your curves. Creating a Convex Hull around each shape also helps.

[oat]

Yes, I prefer your “convex hull” solution as it will not increase the number of control points in the curve.

…and I do need check why these curves are abnormal…

Thank you very much, again.