Newton fix - Githubissues

ipc-sim / rigid-ipc

Robust, intersection-free, simulations of rigid bodies.

https://ipc-sim.github.io/rigid-ipc

MIT License

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Newton fix #12

Closed zfergus closed 5 years ago

zfergus commented 5 years ago

I updated the Newton solver to fail to gradient descent if the line search fails. This helps the optimization make progress even when the Hessian is ill-conditioned. The next step after this pull request is merged is to add a quasi-Newton solver (e.g. BFGS).

Exposed initialization of barrier epsilon in the UI.
Separated line search into its own file.
Newton method now fails to gradient descent.

zfergus commented 5 years ago

I updated this PR with suggested changes and some tests.