131–140 of 184 posts
This seems a bit wasteful to me. Why do you need an LLM to do the part of controlling Blender? Can't normal code be used to automate this instead? And save a scary amount of electricity in the process...
The opening paragraph is very telling; the author doesn't seem to understand typical pro-level parametric CAD programs available on the market: > I keep designing physical parts for our robots. Motor mounts, sensor brackets, wheel hubs. Every time, the workflow is the same: open a GUI CAD program, click around for an hour, export an STL, realize the bolt pattern is 2mm off, repeat. This doesn't make sense. When you r…
> That's the beauty of constraint-based parametric modeling as opposed to, say, modeling in Blender. I was thinking the same thing. This looks more like an API that makes 3d modeling look closer to CAD, but without realizing that CAD is about constraints, parametrizing, and far more.
A C++-library to be aware of is SolveSpace's slvs: https://github.com/solvespace/solvespace/tree/e74c2eae54fdd9....
The opening paragraph is very telling; the author doesn't seem to understand typical pro-level parametric CAD programs available on the market: > I keep designing physical parts for our robots. Motor mounts, sensor brackets, wheel hubs. Every time, the workflow is the same: open a GUI CAD program, click around for an hour, export an STL, realize the bolt pattern is 2mm off, repeat. This doesn't make sense. When you r…
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;) Keywords: Jacobian, Newton-Raphson, Levenberg-Marquardt, Powell dog leg, Schur complements, sparse QR/Cholesky, and so on. The LLM can figure the rest out. Try it yourself! I recommend Rust because the methods are old and most of the algorithms are already implemented by crates, you just have to wire them together. Like I said the hard part is the b-rep: you’re not going to find anything equivalent to Parasolid or…
Look, I'm not trying to decimate you here but your list of keywords is wrong and I know it because I explored that list last month for a completely different application. The Jacobian is the first order derivative for a function that accepts a vector as an input and produces a vector as an output, hence it must be a matrix. Newton-Raphson is an algorithm for finding the roots(=zeroes) of a function. Since the derivat…
If anyone is interested, you can try EngineeringSketchPad ( https://acdl.mit.edu/ESP/ ) which is very similar but much more mature. It also supports simple geometric primitives and boolean operations via a scripting language, but also more general rational curves and surfaces (i.e. BREPs). It has other nice features like differentiation, application-specific views (think structural vs CFD), and an attention to water-…
The certificate just expired, so mobile Safari is not willing to let me see it. :(
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> That's the beauty of constraint-based parametric modeling as opposed to, say, modeling in Blender. I was thinking the same thing. This looks more like an API that makes 3d modeling look closer to CAD, but without realizing that CAD is about constraints, parametrizing, and far more.
This is something I don't get about the code-based CAD tools. They don't let you specify declarative geometric constraints. Constraints are useful beyond just designing parts. If you have a parallel mechanism there are only two ways to solve the kinematics/dynamics for it: Constraint solving for rigid contacts or iterative solving by approximating the model with non-rigid contacts via internal springs.
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> Like editing an SVG in notepad instead of Inkscape. Speaking of which, I would love to have parametric capabilities in Inkscape.
https://graphite.art/ https://paragraphic.design/
What's nice about this is that it allows for programmatic CAD, enabling things like web applications that can download an .stl file based on user input. I hope I can find a weekend or two to play with it. BTW: I spent a few weekends playing with Microcad ( https://microcad.xyz/ ). It was cool, and had a similar rust feel. I just, for the life of me, couldn't figure out how to do 3d ellipses.
Here's an ellipsoid in build123d using geometric transformation of a sphere: from build123d import * mat = Matrix([[2,0,0,0],[0,1.5,0,0],[0,0,0.5,0]]) ellipsoid = Sphere(100).transform_geometry(mat) Also, FYI build123d now runs in the browser thanks to OCP.wasm. Example playground here https://jojain.github.io/build123d-sandbox/
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Are you aware of Rhino 3D with grasshopper?
Rhino has no free tier. I’d love to play with it, and it’s where AutoDesk made the right call. It’s why Fusion 360 has such a strong ecosystem for hobbyists / prosumers.
https://moi3d.com/forum/messages.php?webtag=MOI&msg=11614.11...