I didn’t find in Linkdwg a tool to export a polyline to AutoCAD that contains arcs, only polygon to polyline or polycruve to a bunch of separated lines and arcs. T1.dyn (26.0 KB) [T1_2020-06-07_09-17-47] I wanted to get the room boundary to convert to polyline and exported to AutoCAD, if the room boundary has more than one boundary, sort the boundary list in descending order by area to get the outer-loop at index 0 and the inner-loop to contain the rest of the list in order to create hatch in AutoCAD. The First script to convert boundaries that do not have an arc in it to polygon and leave the rest unchanged. import sys import clr clr.AddReference('ProtoGeometry') from Autodesk.DesignScript.Geometry import * # The inputs to this node will be stored as a list in the IN variables. mine = IN[0] def cArc(var): lArc = [] for i in var: myArc = False for x in i: typ = str(x.GetType()) if "Arc" in typ: myArc = True if myArc != True: allPoints = [] for x in i: allPoints.append(x.StartPoint) allPoints.append(x.EndPoint) myPoly = Polygon.ByPoints(allPoints) lArc.append(myPoly) else: lArc.append(i) return lArc # Place your code below this line # Assign your output to the OUT variable. OUT = cArc(mine) The second script takes the boundary with an arc, get the arc start/endpoint and the sweep angle for the Arc than convert it to a bulge value, replace the arc with a line then convert it to a polygon and export it as a polyline to AutoCAD then edit the polyline using the bulge value to create the arc. # Load the Python Standard and DesignScript Libraries import sys, clr, System clr.AddReference('ProtoGeometry') from Autodesk.DesignScript.Geometry import * from math import tan, radians from System import Array # The inputs to this node will be stored as a list in the IN variables. var = IN[0] # Place your code below this line def _con(x1): typ = str(x1.GetType()) if "Polygon" in typ: px=[] for p0 in x1.Points: px.append(p0.X) px.append(p0.Y) px.append(p0.Z) px=Array[float](px) vlo=SPACE.AddPolyline(px) vlo.Closed=True return vlo # Prepare AutoCAD CAD = System.Runtime.InteropServices.Marshal.GetActiveObject("Autocad.Application").ActiveDocument if CAD.ActiveSpace == 1: SPACE = CAD.ModelSpace else: SPACE = CAD.PaperSpace # The rest allPoly = [] for i in var: if "list" in str(type(i)): count = [] ang = [] for x in range(len(i)): if "Arc" in str(i[x].GetType()): count.append(x) for xx in count: sp = i[xx].StartPoint ep = i[xx].EndPoint # Convert sweeping angle to bulge ea = i[xx].SweepAngle ea = tan(radians(ea / 4)) ang.append(ea) i[xx] = Line.ByStartPointEndPoint(sp, ep) allPoints = [] for x in i: allPoints.append(x.StartPoint) allPoints.append(x.EndPoint) myPoly = Polygon.ByPoints(allPoints) myPoly = _con(myPoly) for xx in range(len(count)): myPoly.SetBulge(count[xx], ang[xx]) allPoly.append(myPoly) else: myPoly = _con(i) allPoly.append(myPoly) # Assign your output to the OUT variable. OUT = allPoly The third Script to create hatch using the previously created polyline but unfortunately, this part is not working, I can only create the hatch using the pywin32 library in visual studio code outside of Dynamo but within dynamo I’m unable to import it. # Load the Python Standard and DesignScript Libraries import sys, clr, System clr.AddReference('ProtoGeometry') from Autodesk.DesignScript.Geometry import * from math import tan, radians from System import Array # The inputs to this node will be stored as a list in the IN variables. var = IN[0] # Place your code below this line def myLoop(myObj): a = [] a.append(myObj) return a # Create Hatch outerLoop = myLoop(allPoly[0]) innerLoop = myLoop(allPoly[1]) hatchObj = SPACE.AddHatch(0, "ANSI31", True) hatchObj.AppendOuterLoop(outerLoop) hatchObj.AppendInnerLoop(innerLoop) hatchObj.Evaluate() hatchObj.PatternScale = 6 CAD.Application.Update() # Assign your output to the OUT variable. OUT = allPoly Any advice on how to solve that

Hello @gabdelmo try this # Load the Python Standard and DesignScript Libraries import sys, clr, System clr.AddReference('ProtoGeometry') from Autodesk.DesignScript.Geometry import * from math import tan, radians from System import Array try: clr.AddReference('Autodesk.AutoCAD.Interop.Common') from Autodesk.AutoCAD.Interop.Common import AcadEntity, AcBooleanType except: stringversion = '2018' #replace by your version if fail clr.AddReferenceToFileAndPath('C:/Program Files/Autodesk/AutoCAD {}/Autodesk.AutoCAD.Interop.Common'.format(stringversion)) from Autodesk.AutoCAD.Interop.Common import AcadEntity, AcBooleanType # The inputs to this node will be stored as a list in the IN variables. var = IN[0] # Place your code below this line def _con(x1): typ = str(x1.GetType()) if "Polygon" in typ: px=[] for p0 in x1.Points: px.append(p0.X) px.append(p0.Y) px.append(p0.Z) px=Array[float](px) vlo=SPACE.AddPolyline(px) vlo.Closed=True return vlo def myLoop(myObj): a = [] a.append(myObj) return a # Prepare AutoCAD CAD = System.Runtime.InteropServices.Marshal.GetActiveObject("Autocad.Application").ActiveDocument if CAD.ActiveSpace == 1: SPACE = CAD.ModelSpace else: SPACE = CAD.PaperSpace # The rest allPoly = [] for i in var: if "list" in str(type(i)): count = [] ang = [] for x in range(len(i)): if "Arc" in str(i[x].GetType()): count.append(x) for xx in count: sp = i[xx].StartPoint ep = i[xx].EndPoint # Convert sweeping angle to bulge ea = i[xx].SweepAngle ea = tan(radians(ea / 4)) ang.append(ea) i[xx] = Line.ByStartPointEndPoint(sp, ep) allPoints = [] for x in i: allPoints.append(x.StartPoint) allPoints.append(x.EndPoint) myPoly = Polygon.ByPoints(allPoints) myPoly = _con(myPoly) for xx in range(len(count)): myPoly.SetBulge(count[xx], ang[xx]) allPoly.append(myPoly) else: myPoly = _con(i) allPoly.append(myPoly) # Create Hatch outerLoop=Array.CreateInstance(AcadEntity,1) outerLoop[0] = allPoly[0] innerLoop=Array.CreateInstance(AcadEntity,1) innerLoop[0] = allPoly[1] hatchObj = SPACE.AddHatch(0, "ANSI31", True) hatchObj.AppendOuterLoop(outerLoop) hatchObj.AppendInnerLoop(innerLoop) hatchObj.Evaluate() hatchObj.PatternScale = 1 CAD.Application.Update() # Assign your output to the OUT variable. OUT = allPoly, innerLoop

Thanks a lot, I tried it that way and it works. I really appreciate your help I’m new to this I think I still need to learn a lot more about interacting with different API and how to import and use the right method.

Dynamo python export polyine and hatch to AutoCad

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Dynamo python export polyine and hatch to AutoCad

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