Struct CameraDelta 

pub struct CameraDelta {
    pub offset: Option<ScreenPoint>,
    pub scale: Option<f64>,
    pub bearing: Option<f64>,
    pub pitch: Option<f64>,
    pub anchor: Option<ScreenPoint>,
    pub momentum: Option<GestureMomentum>,
    pub animation: AnimationOptions,
    pub gesture_phase: GesturePhase,
}

A change to the camera from where it is now, for gestures.

See mln_camera_delta in the C API reference.

Fields

offset: Option<ScreenPoint>

Moves the map’s content this far on the screen, as a drag does.

scale: Option<f64>

Multiplies the map’s scale. 2 zooms in by one level.

bearing: Option<f64>

Degrees to add to the bearing.

pitch: Option<f64>

Degrees to add to the pitch.

anchor: Option<ScreenPoint>

The screen point that scale, bearing, and pitch keep in place. It needs one of them, and it combines with offset only in a delta without a duration.

momentum: Option<GestureMomentum>

How the gesture keeps moving after this delta. Only a delta in the GesturePhase::End phase carries it.

animation: AnimationOptions

gesture_phase: GesturePhase

Trait Implementations

impl Clone for CameraDelta

fn clone(&self) -> CameraDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CameraDelta

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

Formats the value using the given formatter.

impl Default for CameraDelta

fn default() -> CameraDelta

Returns the “default value” for a type.