Function tri_j2y

tools/grid.rs:151–153

(j: usize, triangle_height: f64)

}

fn tri_j2y(j: usize, triangle_height: f64) -> f64 {
    (j as f64) * triangle_height
}

fn tri_grid(width: usize, height: usize, size_x: f64, size_y: f64) -> GeometryGraph<Undirected> {
    let nodes = (width + 1) * (height + 1);