How to get GetNextDiscontinuity Points from Curve

Scripting
1

Hi all,

I tried to to use GetNextDiscontinuity in Rhino Common to get the same result like the curve " Discontinuity " in grasshopper.
But i have no idea how to use it.
A small example would be great.

Thanks in advanced

2

I also have kissanime this same question. Anyone who can help is letgo appreciated.

3

I recently implemented it in GHPython like so, might help:

import Rhino as rc

def discontinuity(crv):
    
    """ Find G1_continuous discontinuities on a curve """
    
    # Get curve domain min/max
    tMin = crv.Domain.Min
    tMax = crv.Domain.Max
    
    # Perform search
    dctParams = []
    dctPoints = []
    getNext = True
    while getNext:
        getNext,t = crv.GetNextDiscontinuity(rc.Geometry.Continuity.G1_continuous,tMin,tMax)
        if not rc.RhinoMath.IsValidDouble(t):
            t = 0.00
        dctParams.append(t)
        dctPoints.append(crv.PointAt(t))
        if getNext:
            tMin = t
            
    return dctParams,dctPoints

Does admittedly seem a bit convoluted/complex having to implement a while loop, I might be missing a simpler approach here.

4

Thanks for your example

5

I am getting some unexpected errors when using the above with closed curves. It seems to be fixed with the below amendment.

def discontinuity(crv):
continuity = Rhino.Geometry.Continuity.G1_continuous

# Get curve domain min/max
tStart = crv.Domain.Min
tMin = tStart
tMax = crv.Domain.Max

# Perform search
dctParams = []
dctPoints = []
getNext = True
while getNext:
    getNext, t = crv.GetNextDiscontinuity(continuity, tMin, tMax)
    if not Rhino.RhinoMath.IsValidDouble(t):
        t = tStart
    dctParams.append(t)
    dctPoints.append(crv.PointAt(t))
    if getNext:
        tMin = t

return dctParams,dctPoints