Structural Physics Simulation - XPBD Cable & FEM Beam

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XPBD Cable System

Research-Grade Structural Physics

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Material Parameters

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\n Stiffness (k)\n 1000\n

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\n Damping (γ)\n 0.10\n

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\n Solver Iterations\n 20\n

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Controls

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Diagnostics

FPS

Physics (ms)

0.0

Max Tension

0.0

Avg Error

0.0

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Tension Visualization

\n Low\n High\n

\n\n \n \n\n","url","link_url","/p/uweb9i2beiw9bujjs1ng","versioned_link_url","/p/uweb9i2beiw9bujjs1ng/1","yapping","**Modularizing Physics Code**\n\nI'm currently focused on refactoring the single-file structural physics simulation into a multi-file project. The initial breakdown includes `Matrix3`, `Vec3` for math utilities, and classes like `Particle`, `DistanceConstraint`, and `XPBDSolver`. My goal is to enhance modularity and make the code easier to maintain and extend.\n\n\n**Defining New Modules**\n\nI've been concentrating on the new file structure. I've broken down the project into modules like `CableSystem`, `FEMNode`, and `Tetrahedron` for the FEM engine, plus `Renderer` and `InteractionController`. The plan is to have a `main.js` for the `Application`, and HTML/CSS for the UI. The modules will use ES modules and importmaps. I'm making sure to keep all the original simulations and UI functionalities.\n\n\n**Refining UI Control**\n\nI'm now integrating the UI switching logic into the `Application` module. I am also planning the basic HTML/CSS structure, as well as considering adding very simple sound effects. While there was a mention of React, I'm sticking to the vanilla JS/Three.js approach for core simulation speed. The project's structure will now consist of `index.html`, `style.css`, and a set of core modules. I am ensuring that mobile touch listeners are preserved.\n\n\n**Defining Module Dependencies**\n\nI've established the module dependency structure, with `math.js` as the base for `xpbd.js`, `fem.js`, and others. `renderer.js` will leverage Three.js, and `interaction.js` will tie into Three.js and `math.js`. I plan to use an `importmap` in `index.html` to manage the dependencies. Refactoring the original code to import `THREE` directly is also underway.\n\n\n**Generalizing Interactions Systems**\n\nI'm currently working to abstract the `InteractionController` to work with multiple active systems, not just a single `cable`. This will handle both scenes. I'm focusing on ensuring seamless integration with the existing `renderer.js` and `interaction.js`, as well as incorporating the recently defined structure of new modules: `xpbd.js`, `fem.js`, `systems.js`, `renderer.js`, `interaction.js`, and `main.js`. I'm making sure UI control is consistent across the various simulation aspects.\n\n\n\n\nindex.html\n\n```index.html\n```\n\nstyle.css\n```style.css\n```\n\nsrc/math.js\n```src/math.js\n```\n\nsrc/xpbd.js\n```src/xpbd.js\n```\n\nsrc/fem.js\n```src/fem.js\n```\n\nsrc/systems.js\n```src/systems.js\n```\n\nsrc/renderer.js\n```src/renderer.js\n```\n\nsrc/interaction.js\n```src/interaction.js\n```\n\nsrc/main.js\n```src/main.js\n```","cursor","eyJpZCI6InV3ZWI5aTJiZWl3OWJ1ampzMW5nIn0","token","included",[],"routes/browser/layout","actionData","errors"]

Structural Physics Simulation - XPBD & FEM