Struct bevy::input::touch::Touch

pub struct Touch { /* private fields */ }
Expand description

A touch input.

§Usage

It is used to store the position and force of a touch input and also the id of the finger. The data of the touch input comes from the TouchInput event and is being stored inside of the Touches bevy resource.

Implementations§

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impl Touch

pub fn delta(&self) -> Vec2

The delta of the current position and the previous_position.

pub fn distance(&self) -> Vec2

The distance of the start_position and the current position.

pub fn id(&self) -> u64

Returns the id of the touch.

Examples found in repository?
examples/input/touch_input.rs (line 16)
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fn touch_system(touches: Res<Touches>) {
    for touch in touches.iter_just_pressed() {
        info!(
            "just pressed touch with id: {:?}, at: {:?}",
            touch.id(),
            touch.position()
        );
    }

    for touch in touches.iter_just_released() {
        info!(
            "just released touch with id: {:?}, at: {:?}",
            touch.id(),
            touch.position()
        );
    }

    for touch in touches.iter_just_canceled() {
        info!("canceled touch with id: {:?}", touch.id());
    }

    // you can also iterate all current touches and retrieve their state like this:
    for touch in touches.iter() {
        info!("active touch: {:?}", touch);
        info!("  just_pressed: {}", touches.just_pressed(touch.id()));
    }
}

pub fn start_position(&self) -> Vec2

Returns the start_position of the touch.

pub fn start_force(&self) -> Option<ForceTouch>

Returns the start_force of the touch.

pub fn previous_position(&self) -> Vec2

Returns the previous_position of the touch.

pub fn previous_force(&self) -> Option<ForceTouch>

Returns the previous_force of the touch.

pub fn position(&self) -> Vec2

Returns the current position of the touch.

Examples found in repository?
examples/input/touch_input.rs (line 17)
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fn touch_system(touches: Res<Touches>) {
    for touch in touches.iter_just_pressed() {
        info!(
            "just pressed touch with id: {:?}, at: {:?}",
            touch.id(),
            touch.position()
        );
    }

    for touch in touches.iter_just_released() {
        info!(
            "just released touch with id: {:?}, at: {:?}",
            touch.id(),
            touch.position()
        );
    }

    for touch in touches.iter_just_canceled() {
        info!("canceled touch with id: {:?}", touch.id());
    }

    // you can also iterate all current touches and retrieve their state like this:
    for touch in touches.iter() {
        info!("active touch: {:?}", touch);
        info!("  just_pressed: {}", touches.just_pressed(touch.id()));
    }
}

pub fn force(&self) -> Option<ForceTouch>

Returns the current force of the touch.

Trait Implementations§

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impl Clone for Touch

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fn clone(&self) -> Touch

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Touch

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl From<&TouchInput> for Touch

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fn from(input: &TouchInput) -> Touch

Converts to this type from the input type.
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impl Copy for Touch

Auto Trait Implementations§

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impl Freeze for Touch

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impl RefUnwindSafe for Touch

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impl Send for Touch

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impl Sync for Touch

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impl Unpin for Touch

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impl UnwindSafe for Touch

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Gets the TypeId of self. Read more
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