Get points nearest to boundary curve

Grasshopper
1

Hi all,

is there a option to get the nearest points to the boundary curve by radius toleranz ?

Unbenannt
Unbenannt.JPG946×385 24.1 KB

2

Hi,

Does this quick writeup help:

t = rs.CurveClosestPoint(curve_id,test_point)
curve_point = rs.EvaluateCurve(curve_id,t)
distance = rs.Distance(test_point,curve_point)

you first get the closest point to the curve and than get the distance and do something based on that distance

-Willem

3

thanks for the help,

try at the moment

Rhino.Geometry.Curve.ClosestPoint()

and will check after that your option.

4

Hi,

If you are are working with Rhino Common already you should not user rhinoscriptcontext(rs)
rs.CurveClosestPoint() uses Rhino.Geometry.Curve.ClosestPoint().

As for Rhino.Geometry.Curve.ClosestPoint() can be passed a maximumDistance, functioning as your desired distance to boundary filter:

ClosestPoint(self: Curve, testPoint: Point3d, maximumDistance: float) -> (bool, float)

-Willem

5

Thanks for reply,

tried this

import Rhino as rh
a = [rh.Geometry.Curve.ClosestPoint(x,i,20.0) for i in y]

and got this list , need to check if the bool pattern is the right points.Unbenannt

maybe there is a way to work with collection.pointlist instead of iterating throught list

6

Hi

How about:

import Rhino as rh
close_pts = []
for pt in y:
    bln,t = rh.Geometry.Curve.ClosestPoint(x,pt,20.0)
    if bln:
        close_pts.append(pt)

a = close_pts

-Willem

7

Big thanks again,

your code looks really clean and easy to follow.
I tried

Unbenannt1
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Unbenannt

It workes but clean is something else.
Good to know that rhinoscriptsyntax use RhinoCommon, didn’t know that.
Also thanks for this example i always forget that multiple variables are possible.

bln,t
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