Error while sweeping different (looped) parts

[StefanHes]

Hi there,

i got an issue while developing a code, which creates a 3D model of weaves (see figure)

Within my code i create multiple splines (each representing one fiber). After that, i create two loops of which each should create all fibers for one direction. (Two loops because there are two directions). Unfortunately sometimes the sweep doesn't work and gives the following error:

__File "D:\textileassembly_error.py", line 118, in textile_assembly() File "D:\textileassembly_error.py", line 73, in init self.warp_cq_splines,self.weft_cq_splines= self.create_cadquerry_splines() File "D:\textileassembly_error.py", line 94, in create_cadquerry_splines weft_cq_splines.append(self.make_fiber(self.points_weft[i],self.cross_section,[0,1,0])) File "D:\textileassembly_error.py", line 85, in makefiber sweep=r.sweep(path) File "C:\Users\Stefan\anaconda3\lib\site-packages\cadquery\cq.py", line 2848, in sweep r = self._sweep( File "C:\Users\Stefan\anaconda3\lib\site-packages\cadquery\cq.py", line 3244, in _sweep thisObj = Solid.sweep( File "C:\Users\Stefan\anaconda3\lib\site-packages\cadquery\occimpl\shapes.py", line 2585, in sweep builder.MakeSolid() Standard_NoSuchObject: NCollectionIndexedDataMap::FindFromKey

I created a file of my code which creates this error:

`# -- coding: utf-8 -- """ """ import cadquery as cq import datetime import numpy as np

class cross_section:

def __init__(self, width, height, form,):
    self.width = width
    self.height = height
    self.form = form
    #form property in sub classes?
    @property
    def form(self):
        return self._form
    @form.setter
    def form(self,value):
        if value == 'elliptical' or value == 'racetrack' or value == 'lenticular':
            self._form = value
        else:
            raise ValueError ("This chosen cross section form is not available.")

    @property
    def width(self):
        return self._width
    @width.setter
    def width(self,value):
        if value <= 0:
            raise ValueError ("The width must be greater than 0.")    
        self._width=value

    @property
    def height(self):
        return self._height
    @height.setter
    def height(self,value):
        if value <= 0:
            raise ValueError ("The height must be greater than 0.")    
        self.height=value

class ellipse(cross_section):

# a = Weave.roving.width/2
# b = Weave.roving.height/2
def __init__(self,width,height): 
    super().__init__(width,height,form = 'elliptical')
    self.a = width/2
    self.b = height/2
    self.points = self.create_cs_points(360)

def create_cs_points(self,amount_of_coordinate_points):

    num_points =360
    angles = np.linspace(0,360,num_points)
    x_cs = self.a*np.cos(np.radians(angles))
    y_cs = self.b*np.sin(np.radians(angles))
    points =[]
    for i in range (0,num_points,1):
        points.append((x_cs[i],y_cs[i]))
    return (points)

class textile_assembly: def init(self):

self.weave=weave

    self.distance_between_fibers = 6
    self.cross_section = ellipse(width=5,height=1)
    self.points_weft=[[[0, 0, -0.5], [0, 3.0, -0.5], [0, 6.0, -0.5], [0, 9.0, -0.5], [0, 12.0, -0.5]], [[6.0, 0, 0.5], [6.0, 3.0, 0.5], [6.0, 6.0, 0.5], [6.0, 9.0, 0.5], [6.0, 12.0, 0.5]]]
    self.points_warp=[[[0, 0, 0.5], [3.0, 0, 0.5], [6.0, 0, 0], [9.0, 0, -0.5], [12.0, 0, -0.5]], [[0, 6.0, 0.5], [3.0, 6.0, 0.5], [6.0, 6.0, 0], [9.0, 6.0, -0.5], [12.0, 6.0, -0.5]]]
    self.warp_cq_splines,self.weft_cq_splines= self.create_cadquerry_splines()
    self.create_cadquerry_assembly()

def make_fiber(self,points,cross_section,direction):
    if direction[0] != 0:
        plane ="YZ"
    elif direction[1] != 0:
        plane="XZ"
    elif direction[2] != 0:
        plane="XY"
    r = cq.Workplane(plane).spline(cross_section.points).close()
    path= cq.Workplane().spline(points, makeWire=True)
    sweep_=r.sweep(path)
    return(sweep_)

def create_cadquerry_splines(self):
    print(self.points_weft)
    print(self.points_warp)
    weft_cq_splines =[]
    for i in range(2):
        print("Weft i:",i)
        weft_cq_splines.append(self.make_fiber(self.points_weft[i],self.cross_section,[0,1,0]))
        weft_cq_splines[i] = weft_cq_splines[i].translate([i*self.distance_between_fibers+0.5*5+0.5*1,0,0])

    warp_cq_splines = []      
    for i in range(2):
        print("Warp i:",i)
        warp_cq_splines.append(self.make_fiber(self.points_warp[i],self.cross_section,[1,0,0]))
        warp_cq_splines[i] = warp_cq_splines[i].translate([0,i*self.distance_between_fibers+0.5*5+0.5*1,0])
    return(warp_cq_splines,weft_cq_splines)

def create_cadquerry_assembly(self):
    assembly =cq.Assembly()                        
    for i in range(2):
        assembly.add(self.warp_cq_splines[i], name="WarpFiber"+str(i))
    for i in range(2):
        assembly.add(self.weft_cq_splines[i], name="WeftFiber"+str(i))

    now = datetime.datetime.now().strftime("%Y%m%d_%H%M%S")
    assembly.save("assembly"+now+".step")
    # self.export_assembly(assembly)
    # print("Saved")

    return(assembly)

textile_assembly() `

Can someone tell me what i do wrong and/or how to solve this issue?

[adam-urbanczyk]

Could you paste your code correctly or attach it as a txt file?

[StefanHes]

Hi,

thanks you for your reply. I am new to git, so sorry for any inconvenience. I attached a .txt file to this message. textileassembly_error.txt