Creating an arc line after selecting grip point on a surface

Scripting
1

Hi,

I am attempting to select points on a surface with a maximum distance between the grips of 200’. I have been able to write the following script, but what I really want to do is, after the first grip selection, have a red line appear to a maximum arc of 200’ and then be able to select the second grip within this arc. Does anyone know how to do this? I am a bit of a newb so please bear with me

from Rhino.RhinoDoc import ActiveDoc as rhdoc
import Rhino
import scriptcontext as sc
import rhinoscriptsyntax as rs
import Rhino.Geometry as rg

sc.doc = rhdoc

srfs = rs.GetObjects("Select surfaces to edit", 8, True)

# Turn on grips
for srf in srfs:
    rs.EnableObjectGrips(srf, True)

# Maximum distance for the second grip
max_distance = 200

# Select the first grip
grip1 = rs.GetObjectGrip("Select the first grip")

# Get the location of the first grip
point1 = grip1[2]

# Create a sphere centered at the location of the first grip with the maximum distance as the radius
sphere = rg.Sphere(point1, max_distance)

# Select the second grip within the maximum distance
grip2 = rs.GetObjectGrip("Select the second grip within " + str(max_distance) + " feet of the first grip", preselect=True, select=True)

# Get the location of the second grip
point2 = grip2[2]

# Calculate the distance between the two grips
distance = point1.DistanceTo(point2)

# Check if the distance is less than or equal to the maximum distance
if distance <= max_distance:
    # Output the locations of the two grips
    outputx1 = point1.X
    outputy1 = point1.Y
    outputz1 = point1.Z
    outputx2 = point2.X
    outputy2 = point2.Y
    outputz2 = point2.Z
else:
    # Display an error message
    rs.MessageBox("The second grip is too far away from the first grip. Please select a grip within " + str(max_distance) + " feet of the first grip.", 0, "Error")
    # Set the outputs to None
    outputx1 = None
    outputy1 = None
    outputz1 = None
    outputx2 = None
    outputy2 = None
    outputz2 = None

# Output the results to the component
OUT = outputx1, outputy1, outputz1, outputx2, outputy2, outputz2
sc.doc = ghdoc