dyna3/app-proto/examples/point-on-sphere.rs

#[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);
}