Split the lines by points

Revit
1

Hi,

I am trying to split the lines with a list of intersected points and then remove the lines between the points. My idea is to create a list of lines with intersected points and then compare two lists of lines and filter out the overlapping lines. But I have no idea how to check if it overlaps or not. Could you give me some idea, or another way to filter out the lines? thanks.

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Thanks,

2

Chop the point list into pairs → transpose → line by 2 points

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1 Like
3

And a python option for you to try :slightly_smiling_face:

# Load the Python Standard and DesignScript Libraries
import sys
import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

line = IN[0]  # Single line
points = IN[1]  # Flat list of points

# Create line segments from subsequent points plus remainders
if len(points) == 0:
    OUT = [line]  # No points, return original line
else:
    # Sort points by their parameter along the line
    def get_parameter(point):
        return line.ParameterAtPoint(point)
    
    sorted_points = sorted(points, key=get_parameter)
    
    line_segments = []
    
    # Add segment from line start to first point (if needed)
    first_param = get_parameter(sorted_points[0])
    if first_param > 0:
        start_segment = Line.ByStartPointEndPoint(line.StartPoint, sorted_points[0])
        line_segments.append(start_segment)
    
    # Add segments between consecutive points
    for i in range(len(sorted_points) - 1):
        segment = Line.ByStartPointEndPoint(sorted_points[i], sorted_points[i + 1])
        line_segments.append(segment)
    
    # Add segment from last point to line end (if needed)
    last_param = get_parameter(sorted_points[-1])
    if last_param < 1:
        end_segment = Line.ByStartPointEndPoint(sorted_points[-1], line.EndPoint)
        line_segments.append(end_segment)
    
    OUT = line_segments

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