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I use S/W rendering, accessing a W7 VM (on real W7 box via VMWare), from Debian via FreeRDP. As without S/W rendering it only supports ...

Jan 1, 2013 · OpenSCAD uses CGAL's CSG operations on Nef polyhedrons, not the brep functionality. CGAL's way of doing CSG is extremely slow, but comes with pretty good guarantees to produce manifold objects, making it well suited for 3D printing.

The reason it is so slow is that CGAL uses infinite precision rationals to represent numbers instead of floating point. As soon as you have ...

CGAL's way of doing CSG is extremely slow, but comes with pretty good guarantees to produce manifold objects, making it well suited for 3D printing. I'm not familiar enough with CGAL or breps to tell whether it would be possible to rewrite (parts of) OpenSCAD to use other techniques for calculating the resulting surfaces.

Web# wget -qO- https://files.openscad.org/OBS-Repository-Key.pub | sudo tee /etc/apt/trusted.gpg.d/obs-openscad-nightly.asc After the key is added, the repository …

OpenSCAD = 3D CAD for developers. OpenSCAD is a popular open-source design tool for 3D printing afficionados (and others). It’s essentially a CAD software for …

WebYep, it's very slow. You use nested loops, but 20*20 is still only 400, so that shouldn't be the issue. None of the usual culprits (such as minkowski()...) is there, so it's hard to say. I …

Jun 1, 2016 · I apologize if this has been asked before, but I've been searching around and haven't found a solution. When I open a semi-large model in openscad (Cyclone PCB for example), the preview mode is unusably slow. If I try to use the mouse to view from a different angle, it takes several seconds to actually move and I'm on a fairly powerful desktop PC.

2015.03 is atrociously slow. Typing in the editor lags and the preview window, with its constant updating, is jerky. Also while working with files on a network drive, …

And OpenScad is very slow to render. I then upgraded my GPU going from a GTX 1060 to a GTX 1080ti, and there has been no improvement in the rendering. Which …

Yep, it's very slow. You use nested loops, but 20*20 is still only 400, so that shouldn't be the issue. None of the usual culprits (such as minkowski ()...) is there, so it's hard to say. I strongly suspect the difference () at the top of lamp (), try , just as an experiment, to change that to a union, just to see if it makes a speed difference ...

Fix extremely slow reactions of the GUI. Sometimes it is unfeasible to move an object with the mouse because the respone time is too long (e.g. several minutes) ...

11 votes, 35 comments. I have been doing some simple geometry modeling, using the Minkowski function. And OpenScad is very slow to render.

Re: slow render. Interesting shape! Rotating it in OpenScad looks like it actually changes shape. I think there is a typo in the length function. I changed it to: …

OpenSCAD calculates polyhedrons much faster than big unions of parts. Buut, OpenSCAD also kinda sucks for doing vector math. I wrote SolidPython to get around some of the constrictions of OpenSCAD, and the screw_thread utility method should render decently detailed threads (120 segments per revolution, say) in a few seconds.

Feb 9, 2022 · OpenSCAD is a popular open-source design tool for 3D printing afficionados (and others). It’s essentially a CAD software for programmers with a minimalist UI. A simple declarative programming language defines Constructive Solid Geometry (CSG) operations like unions, intersections, differences, which can be parameterized with loops and variables.

OpenSCAD can use 1 hyperthread of one core, which if the other thread is idle is typically around 60-70% of the core's total performance. So your 30% sounds about right. A perfectly parallelising …

It took somewhere between 30 and 90 minutes and as said, openscad was really struggling to end the rendering. maze10c.zip · maze10c.scad · Flag.

Set useFor to true and rotating around the object is disgustingly slow compared to if useFor=false. This is just an example. It gets worse when I add more …

When I open a semi-large model in openscad (Cyclone PCB for example), the preview mode is unusably slow. If I try to use the mouse to view from a different angle, it takes several seconds to actually move …

What about multithreading? Or skipping operations altogether?. So I was getting there, performance-wise, but my models were still too slow to ...