Regression test for https://github.com/RazrFalcon/tiny-skia/pull/91

main.rs

use tiny_skia::{Paint, PathBuilder, Pixmap, Stroke, Transform, LineJoin};

fn main() {
    let path_sharp = {
        let mut pb = PathBuilder::new();
        pb.move_to(40.0, 155.0);
        pb.cubic_to(98.0, 140.0, 99.0, 105.0, 100.0, 40.0);
        pb.cubic_to(101.0, 105.0, 102.0, 140.0, 160.0, 160.0);
        pb.finish().unwrap()
    };

    let path_nearly180 = {
        let mut pb = PathBuilder::new();
        pb.move_to(40.0, 155.0);
        pb.cubic_to(95.0, 140.0, 100.0, 105.0, 100.0, 40.0);
        pb.cubic_to(100.0, 105.0, 105.0, 140.0, 160.0, 160.0);
        pb.finish().unwrap()
    };

    let path_pivotline = {
        let mut pb = PathBuilder::new();
        pb.move_to(0.0, 40.0);
        pb.line_to(600.0, 40.0);
        pb.finish().unwrap()
    };

    let toprow = Transform::from_translate(0.0, 0.0);
    let bottomrow = Transform::from_translate(0.0, 300.0);

    let mut pixmap = Pixmap::new(900, 600).unwrap();
    let mut paint = Paint::default();

    paint.set_color_rgba8(255, 0, 0, 255);
    let thin_stroke = Stroke::default();
    pixmap.stroke_path(&path_pivotline, &paint, &thin_stroke, toprow, None);
    pixmap.stroke_path(&path_pivotline, &paint, &thin_stroke, bottomrow, None);


    paint.set_color_rgba8(0, 128, 0, 255);

    let mut miter = Stroke::default();
    miter.width = 10.0;
    miter.line_join = LineJoin::Miter;

    let mut miterclip_small = Stroke::default();
    miterclip_small.width = 10.0;
    miterclip_small.line_join = LineJoin::MiterClip;
    miterclip_small.miter_limit = 0.5;

    let mut miterclip_medium = Stroke::default();
    miterclip_medium.width = 10.0;
    miterclip_medium.line_join = LineJoin::MiterClip;
    miterclip_medium.miter_limit = 2.5;

    let mut miterclip_large = Stroke::default();
    miterclip_large.width = 10.0;
    miterclip_large.line_join = LineJoin::MiterClip;
    miterclip_large.miter_limit = 7.5;

    pixmap.stroke_path(&path_sharp, &paint, &miter, toprow, None);
    pixmap.stroke_path(&path_nearly180, &paint, &miter, bottomrow, None);

    pixmap.stroke_path(&path_sharp, &paint, &miterclip_small, toprow.post_translate(150.0, 0.0), None);
    pixmap.stroke_path(&path_nearly180, &paint, &miterclip_small, bottomrow.post_translate(150.0, 0.0), None);

    pixmap.stroke_path(&path_sharp, &paint, &miterclip_medium, toprow.post_translate(300.0, 0.0), None);
    pixmap.stroke_path(&path_nearly180, &paint, &miterclip_medium, bottomrow.post_translate(300.0, 0.0), None);

    pixmap.stroke_path(&path_sharp, &paint, &miterclip_large, toprow.post_translate(450.0, 0.0), None);
    pixmap.stroke_path(&path_nearly180, &paint, &miterclip_large, bottomrow.post_translate(450.0, 0.0), None);

    pixmap.save_png("image.png").unwrap();
}