RC: Check if point is inside a closed curve

Rhino Developer
1

Hi,

Does RC has a method for checking status of the point in regards to location inside or outside of closed curve?
Similar as Brep.Isinside method for breps? Cannot find anything suitable.

Thanks,
Dmitriy

2

Use Rhino.Geometry.Curve.Contains().

3

Great!
Thanks Dale!

4

Does the point need to be planar with the curve?
Or is it view dependent?

5

Both are projected to the plane provided:

Contains(self: Curve, testPoint: Point3d, plane: Plane, tolerance: float) -> PointContainment

    Computes the relationship between a point and a closed curve region.    This curve must be closed or the return value will be Unset.


    testPoint: Point to test.
    plane: Plane in in which to compare point and region.
    tolerance: Tolerance to use during comparison.
    Returns: Relationship between point and curve region.

@dale
Documentation online does not provide the full range of possible arguments and is limited to the point3D argument:
http://developer.rhino3d.com/api/RhinoCommon/html/M_Rhino_Geometry_Curve_Contains.htm

-Willem

6

Interesting. Thanks for the explanation :slight_smile:

7

@Willem, sorry for being dense, but I see all three overrides in the online documentation. Am I missing something?

8

You are right, I’m the one being dense here, was looking only at the right pane; missing the left pane completely.

Thanks
-Willem

9

Hi,

is there a C++ version of Rhino.Geometry.Curve.Contains()?

Thanks!

10

For points, use RhinoPointInPlanarClosedCurve. See rhinoSdkUtilities.h for details.

– Dale