dyna3/app-proto/examples/point-on-sphere.rs
Vectornaut 5864017e6f feat: Engine diagnostics (#92)
Adds a `Diagnostics` component that shows the following diagnostics from the last realization:

- Confirmation of success or a short description of what failed.
- The value of the loss function at each step.
- The spectrum of the Hessian at each step.

The loss and spectrum plots are shown on switchable panels.

Also includes some refactoring/renaming of existing code.

Co-authored-by: Aaron Fenyes <aaron.fenyes@fareycircles.ooo>
Reviewed-on: StudioInfinity/dyna3#92
Co-authored-by: Vectornaut <vectornaut@nobody@nowhere.net>
Co-committed-by: Vectornaut <vectornaut@nobody@nowhere.net>
2025-07-21 04:18:49 +00:00

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866 B
Rust

#[path = "common/print.rs"]
mod print;
use dyna3::engine::{
point,
realize_gram,
sphere,
ConfigNeighborhood,
ConstraintProblem
};
fn main() {
let mut problem = ConstraintProblem::from_guess(&[
point(0.0, 0.0, 2.0),
sphere(0.0, 0.0, 0.0, 1.0)
]);
for j in 0..2 {
for k in j..2 {
problem.gram.push_sym(j, k, if (j, k) == (1, 1) { 1.0 } else { 0.0 });
}
}
problem.frozen.push(3, 0, problem.guess[(3, 0)]);
let realization = realize_gram(
&problem, 1.0e-12, 0.5, 0.9, 1.1, 200, 110
);
print::title("Point on a sphere");
print::realization_diagnostics(&realization);
if let Ok(ConfigNeighborhood{ config, .. }) = realization.result {
print::gram_matrix(&config);
print::config(&config);
}
print::loss_history(&realization.history);
}