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Expose center position in MultiTouchInfo (#5247)

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Expose the center / average position in MultiTouchInfo
This commit is contained in:
lucasmerlin
2024-10-23 11:03:53 +02:00
committed by GitHub
parent e5c502f21e
commit 13e65eb55b
1 changed files with 6 additions and 0 deletions
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6
crates/egui/src/input_state/touch_state.rs
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@@ -15,6 +15,9 @@ pub struct MultiTouchInfo {
/// Position of the pointer at the time the gesture started. /// Position of the pointer at the time the gesture started.
pub start_pos: Pos2, pub start_pos: Pos2,
/// Center position of the current gesture (average of all touch points).
pub center_pos: Pos2,
/// Number of touches (fingers) on the surface. Value is ≥ 2 since for a single touch no /// Number of touches (fingers) on the surface. Value is ≥ 2 since for a single touch no
/// [`MultiTouchInfo`] is created. /// [`MultiTouchInfo`] is created.
pub num_touches: usize, pub num_touches: usize,
@@ -203,6 +206,8 @@ impl TouchState {
PinchType::Proportional => Vec2::splat(zoom_delta), PinchType::Proportional => Vec2::splat(zoom_delta),
}; };
let center_pos = state.current.avg_pos;
MultiTouchInfo { MultiTouchInfo {
start_time: state.start_time, start_time: state.start_time,
start_pos: state.start_pointer_pos, start_pos: state.start_pointer_pos,
@@ -212,6 +217,7 @@ impl TouchState {
rotation_delta: normalized_angle(state.current.heading - state_previous.heading), rotation_delta: normalized_angle(state.current.heading - state_previous.heading),
translation_delta: state.current.avg_pos - state_previous.avg_pos, translation_delta: state.current.avg_pos - state_previous.avg_pos,
force: state.current.avg_force, force: state.current.avg_force,
center_pos,
} }
}) })
} }