Split curve at intersection point

Grasshopper
1

Hi all, I’m trying to split a curve at the intersection point with a line and select one of the two segments. How can I do it. Thank you for the help

split curve with line.gh (8.4 KB)

2

1 of many possibilities

image
image1523×712 127 KB

1 Like
3

thank you very much

4

How do split lines into segments with a point or points using Rhinocommon?

Thanks in advance
Vijesh

5
  • use Curve.ClosestPoint() to find the parameter of the curve that is closest to the point
  • Then use Curve.Split() to the split curve at the parameter found above

https://developer.rhino3d.com/api/RhinoCommon/html/M_Rhino_Geometry_Curve_ClosestPoint.htm

https://developer.rhino3d.com/api/RhinoCommon/html/M_Rhino_Geometry_Curve_Split_5.htm

-Kevin

6

Thank you for the quick reply. It is not giving the segments. Even by doing the dividebylength am getting only the numbers.

c = rg.LineCurve(polylineseg1[0])
d = rg.LineCurve.DivideByLength(c,5,True)

result: [0, 5, 10]

Also, note that the Split curve method is only for planes and breps, I could not find it with points.

Thanks
Vijesh

7

Ok, since you posted this in the grasshopper category.

split_curve_with_point
split_curve_with_point3554×1560 292 KB

split_curve_with_point.gh (11.9 KB)

  • Inputs:
    • 1 curve
    • 1 point
  • Outputs
    • boolean value indicating success of function
    • 2 curves (original curve split by point)

-Kevin

1 Like
8

Thank you very much it worked. I know it is too much to ask, Is it possible to split it with multiple points? Or do I have to call the parameter one by one? I tried with a list of points but not worked.

9

split_curve_with_points
split_curve_with_points1828×1696 243 KB

split_curve_with_points.gh (12.7 KB)

Note that the points input has been changed to List Access

-Kevin

2 Likes
10

Thank you very much. It did help me.