2019-12-31 05:34:27 +11:00
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use crate::MouseMode;
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2016-01-30 06:16:00 +11:00
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fn clamp(v: f32, lb: f32, ub: f32) -> f32 {
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f32::min(f32::max(v, lb), ub)
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}
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2019-11-27 18:03:33 +11:00
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pub fn get_pos(
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mode: MouseMode,
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mx: f32,
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my: f32,
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scale: f32,
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width: f32,
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height: f32,
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) -> Option<(f32, f32)> {
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2016-01-30 06:16:00 +11:00
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let s = 1.0 / scale as f32;
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let x = mx * s;
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let y = my * s;
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let window_width = width * s;
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let window_height = height * s;
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match mode {
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MouseMode::Pass => Some((x, y)),
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2019-11-27 18:03:33 +11:00
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MouseMode::Clamp => Some((
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clamp(x, 0.0, window_width - 1.0),
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clamp(y, 0.0, window_height - 1.0),
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)),
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2016-01-30 06:16:00 +11:00
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MouseMode::Discard => {
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if x < 0.0 || y < 0.0 || x >= window_width || y >= window_height {
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None
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} else {
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Some((x, y))
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}
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2019-11-27 18:03:33 +11:00
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}
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2016-01-30 06:16:00 +11:00
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}
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}
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