//! Shows how to load svgs

use geo::rotate::RotatePoint;
use geo::translate::Translate;
use geo::{Coordinate, Point};
use polygon_art::load_multipolygon_from_svg;
use polygon_art::Context;
use polygon_art::MultiPolygonExt;
use rand::Rng;

fn main() {
    let mut renderer = Context::create();

    let path = "pool/examples/example.svg";
    let svg = load_multipolygon_from_svg(path).expect("couldn't load svg");

    let item_space = 110.;

    let items_per_line = (renderer.width / item_space) as i32;
    let rows = (renderer.height / item_space) as i32;
    let items_to_draw = rows * items_per_line;

    let rotations: i32 = renderer.pseudo_random_number_generator.gen_range(0..10);
    let rotation_step = rotations as f64 * 360. / (items_to_draw as f64);

    let initial_transition_x =
        (renderer.width - items_per_line as f64 * item_space) / 2. + item_space / 2.;
    let initial_transition_y = (renderer.height - rows as f64 * item_space) / 2. + item_space / 2.;

    renderer.translate(initial_transition_x, initial_transition_y);

    let svg = svg.scale_to_width(item_space - (item_space * 0.1));
    let svg = svg.translate_center();
    for index in 0..items_to_draw {
        let svg = svg.rotate_around_point(
            index as f64 * rotation_step,
            Point(Coordinate { x: 0.0, y: 0.0 }),
        );
        let svg = svg.translate(
            (index % items_per_line) as f64 * item_space,
            (index / items_per_line) as f64 * item_space,
        );
        renderer.draw_multipolygon(&svg);
    }

    renderer.render();
}