50 lines
750 B
V
50 lines
750 B
V
module main
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import gg
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import gx
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struct App {
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mut:
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gg &gg.Context = 0
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radius f64 = 10.0
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}
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fn main() {
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mut app := &App{}
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app.gg = gg.new_context(
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bg_color: gx.white
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width: 300
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height: 300
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window_title: 'Circles'
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frame_fn: frame
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event_fn: on_event
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user_data: app
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)
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app.gg.run()
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}
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fn on_event(e &gg.Event, mut app App) {
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match e.typ {
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.key_down {
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match e.key_code {
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.up {
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app.radius += 1
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}
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.down {
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app.radius -= 1
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}
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else {}
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}
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}
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else {}
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}
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}
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fn frame(mut app App) {
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app.gg.begin()
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app.gg.draw_circle_empty(150, 150, f32(app.radius), gx.blue)
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app.gg.draw_text(20, 20, 'radius: $app.radius')
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// app.gg.draw_text(20, 50, 'circle_segment_size: $circle_segment_size')
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app.gg.end()
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}
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