Cool lines drawn with V's gg module.

module main

import gg
import gx

fn main() {
    mut ctx := gg.new_context(
        bg_color: gx.white
        width: 600
        height: 780
        create_window: true
        window_title: 'Lines'
        frame_fn: frame
        sample_count: 4
    )
    ctx.run()
}

fn frame(mut ctx gg.Context) {
    window_size := ctx.window_size()
    ctx.begin()
    for l := 30; l <= window_size.height; l += window_size.height / 10 {
        for r := 30; r <= window_size.height; r += window_size.height / 10 {
            ctx.draw_line(10, l, window_size.width - 10, r, gx.black)
        }
    }
    ctx.end()
}