Sketch.hull() causes a ZeroDivisionError instead of some guidance around what was done wrong #1224
Comments
alikureishy
changed the title
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not exactly the same problem, but I had trouble using out = cq.Sketch().circle(rod_d / 2 + wall_t).push([mount_loc]).circle(mount_d / 2 + wall_t).edges().hull()which is basically a big and small circle that intersect each other. using hull produced this error: where After messing around a bit, I solved my issue (without understanding the code too much, just messing and observe what works) with this commit. Possibly this could help you. |
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AFAICT the issue occurs only with intersecting circles. Do you confirm? |
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I think the issue is with concentric arcs (haven't tested yet, I could do that tomorrow), and intersecting circles would be one instance of that |
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I tried to come up with other scenarios, but they don't seem to hit the same code path as 2 intersecting circles (haven't dug deeper to see what's actually going on). Two things I tried: cq.Sketch().circle(5).push([(5, 0)]).rect(10, 10, mode="i").reset().circle(2).hull() # concentric big semi + small circle
cq.Sketch().arc((0, 0), 5, 0, 180).arc((0, 0), 5, 180, 360).reset().edges().hull()) # 2 halves of a circle |
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Hi. I've ran into problems with hull() when working on a model. I did a bit of testing with intersecting circles. The samples and code are here: There are 4 equidistant circles (on a square). I place a single shape in the middle. Whenever the center circle is intersecting or is tangent to the others, the code fails. However, a new issue shows up when using a rectangle in the center. If the rectangle is not intersecting, but has sides bigger than gap between the circles (d-2*r) the code falls into an infinite loop. This behavior is not present when placing a similar sized circle. Maybe this is some new info to work with |
To Reproduce
I was going through the Sketch tutorial, and playing around with hull(), and encountered this error. What am I doing wrong in this script below?
This is the model right before the
hull()invocation above:Backtrace
Environment
OS: MacOS Ventura 13.0.1
Was CadQuery installed using Conda?: Yes
Output of
conda listfrom your active Conda environment:Using: jupyter-cadquery on Jupyter Notebook
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