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More accurate recent mouse velocity

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This commit is contained in:
Emil Ernerfeldt 2020-05-23 11:38:54 +02:00
parent ee0ad02717
commit c3d3bc0c07
2 changed files with 8 additions and 3 deletions
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3
emigui/src/input.rs
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@ -180,8 +180,7 @@ impl MouseInput {
// the user tried to throw // the user tried to throw
} }
// TODO: pass current time as argument so we don't have a velocity after mouse up let velocity = self.pos_tracker.velocity_noew(new.time).unwrap_or_default();
let velocity = self.pos_tracker.velocity().unwrap_or_default();
MouseInput { MouseInput {
down: new.mouse_down && new.mouse_pos.is_some(), down: new.mouse_down && new.mouse_pos.is_some(),

8
emigui/src/movement_tracker.rs
View file

@ -104,8 +104,14 @@ where
T: std::ops::Sub<Output = Vel>, T: std::ops::Sub<Output = Vel>,
Vel: std::ops::Div<f32, Output = Vel>, Vel: std::ops::Div<f32, Output = Vel>,
{ {
/// Calculate a smooth velocity (per second) from start until now
pub fn velocity_noew(&mut self, now: f64) -> Option<Vel> {
self.flush(now);
self.velocity_all()
}
/// Calculate a smooth velocity (per second) over the entire time span /// Calculate a smooth velocity (per second) over the entire time span
pub fn velocity(&self) -> Option<Vel> { pub fn velocity_all(&self) -> Option<Vel> {
if let (Some(first), Some(last)) = (self.values.front(), self.values.back()) { if let (Some(first), Some(last)) = (self.values.front(), self.values.back()) {
let dt = (last.0 - first.0) as f32; let dt = (last.0 - first.0) as f32;
if dt > 0.0 { if dt > 0.0 {