Polyline with Fillet corner

[djnelson75]

Basic question, so if I want to create a polyline with a fillet corner in python would the basic methodology be.

define Curve1
define Curve2
use CurveFilletPoints() to find fillet arc points.
define new Curve01 that start/stops at fillet point
define new Curve02 that starts/stops at fillet point
define arc with fillet points
join 3 curves together

or would you

define Curve1
define Curve2
use CurveFilletPoints() to find fillet arc points.
trim Curve1 at fillet point
trim Curve2 at fillet point
define arc with fillet points
join 3 curves together


Dennis

[Grischa]

Hi Dennis,

here is a version of a polycurve fillet.

I'm sure this could be done much simpler - but at least it's doing the job.

best,

Grischa

Python Code:

import rhinoscriptsyntax as rs
 
def FilletCurve(crv01, crv02, radius=100):
   
    if rs.IsCurve(crv01) and rs.IsCurve(crv02):
        crv_fillet = rs.AddFilletCurve( crv01, crv02, radius )
        pts_fillet = rs.CurveFilletPoints( crv01, crv02, radius )
   
    if pts_fillet:
        return pts_fillet
       
def FilletPolyLine(p_crv, radius):
   
    if rs.IsPolyline(p_crv):
        #check for layer and/or create new one
        if rs.IsLayer("Fillet_Curves")is False:
            rs.AddLayer ("Fillet_Curves", (0, 255, 255))
        layer = rs.CurrentLayer ("Fillet_Curves")
       
        pts = []
        pts.append(rs.CurveStartPoint(p_crv))
       
        crvs = rs.ExplodeCurves(p_crv)
       
    if crvs: 
        for i in range(len(crvs) - 1):
            pts_fillet = FilletCurve( crvs[i], crvs[i+1], radius )
           
            pts.append(pts_fillet[0])
            pts.append(pts_fillet[1])
           
    pts.append(rs.CurveEndPoint(p_crv))
   
    for i in range( len(pts) - 1):
        if i % 2 == 0:
            rs.AddLine(pts[i], pts[i+1])
       
    rs.DeleteObjects(crvs)
   
   
if ( __name__ == '__main__' ):
   
    #current layer name
    layer_current = rs.CurrentLayer()
   
    #get user inputs
    p_crv = rs.GetObject("select text curve", filter = rs.filter.curve)
    radius = rs.GetReal("Enter fillet raduis", number = 40)
   
    #function call
    FilletPolyLine(p_crv, radius)
   
    #reset current layer
    rs.CurrentLayer (layer_current)

[djnelson75]

Sweet. Thanks looking at it right now.

[hamia]

Nice Script, I modified it a bit for closed polylines in grasshopper, as well in grasshopper and it works very well. The problem is when i have my polycurves ina datatree structure it gives me this eror:
<Rhino.Geometry.PolylineCurve object at 0x00000000000023E1 [Rhino.Geometry.PolylineCurve]>

Runtime error (TypeErrorException): Parameter must be a Guid or string representing a Guid
Traceback:
line 467, in coerceguid, "C:\Users\91hag\AppData\Roaming\McNeel\Rhinoceros\ 5.0\Plug-ins\IronPython (814d908a-e25c-493d-97e9-ee3861957f49)\settings\lib\rhinoscript\utility.py"
line 532, in coercecurve, "C:\Users\91hag\AppData\Roaming\McNeel\Rhinoceros\ 5.0\Plug-ins\IronPython (814d908a-e25c-493d-97e9-ee3861957f49)\settings\lib\rhinoscript\utility.py"
line 528, in CloseCurve, "C:\Users\91hag\AppData\Roaming\McNeel\Rhinoceros\ 5.0\Plug-ins\IronPython (814d908a-e25c-493d-97e9-ee3861957f49)\settings\lib\rhinoscript\curve.py"
line 29, in filletPolyLine, "<string>"
line 96, in script

Here is the first and second script, Any idea?


import rhinoscriptsyntax as rs
import Rhino as rc

####To creat DataTree:
import clr
clr.AddReference("Grasshopper")
import Grasshopper as gh
filletSections=gh.DataTree[rc.Geometry.Curve]()
def angleBet(crv01,crv02):
crv01Start=rs.CurveStartPoint(crv01)
crv01End=rs.CurveEndPoint(crv01)
crv02Start=rs.CurveStartPoint(crv02)
crv02End=rs.CurveEndPoint(crv02)
vec01=rs.VectorCreate(crv01Start,crv01End)
vec02=rs.VectorCreate(crv02End,crv02Start)
angle=rs.VectorAngle(vec01,vec02)
return angle

def filletCurve(crv01,crv02, radius):
crv_fillet=rs.AddFilletCurve(crv01,crv02,radius)
pts_fillet=rs.CurveFilletPoints(crv01,crv02,radius )

if pts_fillet:
return (crv_fillet,pts_fillet)

def filletPolyLine(p_crv,radius=[]):
pts=[]
if rs.CloseCurve(polyCurve) :
#pts.append(rs.CurveStartPoint(p_crv))
print "yes"
crvs=rs.ExplodeCurves(p_crv)
listLen=len(crvs)
crvs.insert(listLen,crvs[0])
corRadius=radius[0]
pts_fillet=filletCurve(crvs[listLen-1],crvs[listLen],corRadius)
pts.append(pts_fillet[1][1])
lines=[]
if crvs:

for i in range(len(crvs)-1):
angle=angleBet(crvs[i],crvs[i+1])
if (angle<=180) and (angle>=178):
print i
print angle

else:
if (len(radius))==1:
corRadius=radius[0]
pts_fillet=filletCurve(crvs[i],crvs[i+1],corRadius)
pts.append(pts_fillet[1][0])
pts.append(pts_fillet[1][1])
lines.append(pts_fillet[0])
else:
corRadius=radius[i]
pts_fillet=filletCurve(crvs[i],crvs[i+1],corRadius)
pts.append(pts_fillet[1][0])
pts.append(pts_fillet[1][1])
lines.append(pts_fillet[0])
else:
pts.append(rs.CurveStartPoint(p_crv))
crvs=rs.ExplodeCurves(p_crv)
lines=[]
if crvs:
for i in range(len(crvs)-1):
angle=angleBet(crvs[i],crvs[i+1])
if (angle<=180) and (angle>=178):
print i
print angle
else:
if (len(radius))==1:
corRadius=radius[0]
pts_fillet=filletCurve(crvs[i],crvs[i+1],corRadius)
pts.append(pts_fillet[1][0])
pts.append(pts_fillet[1][1])
lines.append(pts_fillet[0])
else:
corRadius=radius[i]
pts_fillet=filletCurve(crvs[i],crvs[i+1],corRadius)
pts.append(pts_fillet[1][0])
pts.append(pts_fillet[1][1])
lines.append(pts_fillet[0])
print "Close curve"
#pts.append(rs.CurveEndPoint(p_crv))


for i in range(len(pts)-1):
if i%2==0:
line=rs.AddLine(pts[i],pts[i+1])
lines.append(line)

return lines
a=filletPolyLine(polyCurve,y)

Second one with Datatree structure:

import rhinoscriptsyntax as rs
import Rhino as rc

####To creat DataTree:
import clr
clr.AddReference("Grasshopper")
import Grasshopper as gh
filletSections=gh.DataTree[rc.Geometry.Curve]()
def angleBet(crv01,crv02):
crv01Start=rs.CurveStartPoint(crv01)
crv01End=rs.CurveEndPoint(crv01)
crv02Start=rs.CurveStartPoint(crv02)
crv02End=rs.CurveEndPoint(crv02)
vec01=rs.VectorCreate(crv01Start,crv01End)
vec02=rs.VectorCreate(crv02End,crv02Start)
angle=rs.VectorAngle(vec01,vec02)
return angle

def filletCurve(crv01,crv02, radius):
crv_fillet=rs.AddFilletCurve(crv01,crv02,radius)
pts_fillet=rs.CurveFilletPoints(crv01,crv02,radius )

if pts_fillet:
return (crv_fillet,pts_fillet)

def filletPolyLine(p_crv,radius=[]):
pts=[]
if rs.CloseCurve(polyCurve) :
#pts.append(rs.CurveStartPoint(p_crv))
print "yes"
crvs=rs.ExplodeCurves(p_crv)
listLen=len(crvs)
crvs.insert(listLen,crvs[0])
corRadius=radius[0]
pts_fillet=filletCurve(crvs[listLen-1],crvs[listLen],corRadius)
pts.append(pts_fillet[1][1])
lines=[]
if crvs:

for i in range(len(crvs)-1):
angle=angleBet(crvs[i],crvs[i+1])
if (angle<=180) and (angle>=178):
print i
print angle

else:
if (len(radius))==1:
corRadius=radius[0]
pts_fillet=filletCurve(crvs[i],crvs[i+1],corRadius)
pts.append(pts_fillet[1][0])
pts.append(pts_fillet[1][1])
lines.append(pts_fillet[0])
else:
corRadius=radius[i]
pts_fillet=filletCurve(crvs[i],crvs[i+1],corRadius)
pts.append(pts_fillet[1][0])
pts.append(pts_fillet[1][1])
lines.append(pts_fillet[0])
else:
pts.append(rs.CurveStartPoint(p_crv))
crvs=rs.ExplodeCurves(p_crv)
lines=[]
if crvs:
for i in range(len(crvs)-1):
angle=angleBet(crvs[i],crvs[i+1])
if (angle<=180) and (angle>=178):
print i
print angle
else:
if (len(radius))==1:
corRadius=radius[0]
pts_fillet=filletCurve(crvs[i],crvs[i+1],corRadius)
pts.append(pts_fillet[1][0])
pts.append(pts_fillet[1][1])
lines.append(pts_fillet[0])
else:
corRadius=radius[i]
pts_fillet=filletCurve(crvs[i],crvs[i+1],corRadius)
pts.append(pts_fillet[1][0])
pts.append(pts_fillet[1][1])
lines.append(pts_fillet[0])
print "Close curve"
#pts.append(rs.CurveEndPoint(p_crv))


for i in range(len(pts)-1):
if i%2==0:
line=rs.AddLine(pts[i],pts[i+1])
lines.append(line)

return lines
for i in range(len(polyCurve)):
polyCurve0=polyCurve[i]
print polyCurve0
filletCur=filletPolyLine(polyCurve0,y)
for j in range(len(filletCur)):
filletSections.Add(filletCur[j],gh.Kernel.Data.GH_Path(i))
a=filletSections