Struct AnalogVisualizer 

pub struct AnalogVisualizer {
    pub stick_x: f32,
    pub stick_y: f32,
    pub deadzone: f32,
    pub deadzone_shape: DeadzoneShape,
    pub range_min: i32,
    pub range_max: i32,
    pub cache: Arc<Cache>,
}

Canvas-based analog stick visualizer

Displays the current stick position as a dot, with deadzone shown as a shaded region (circle or square). The outer circle represents the full range of motion.

Uses canvas::Cache to optimize rendering: static elements (outer circle, deadzone, axes) are cached and only redrawn when deadzone or shape changes. Only the stick position dot is redrawn every frame.

The cache is wrapped in Arc to allow sharing across widget instances since Cache doesn’t implement Clone.

Fields

stick_x: f32

Current stick position X (-1.0 to 1.0)

stick_y: f32

Current stick position Y (-1.0 to 1.0)

deadzone: f32

Deadzone radius (0.0 to 1.0)

deadzone_shape: DeadzoneShape

Deadzone shape

range_min: i32

Range minimum value (typically -32768)

range_max: i32

Range maximum value (typically 32767)

cache: Arc<Cache>

Cache for static elements (deadzone, axes, outer bounds) Wrapped in Arc for sharing across widget instances

Implementations

impl AnalogVisualizer

pub fn clear_cache(&self)

Clear the cached geometry.

Call this when deadzone or deadzone shape changes to force a redraw of the static background elements.

Trait Implementations

impl Default for AnalogVisualizer

fn default() -> Self

Returns the “default value” for a type.

impl<Message> Program<Message> for AnalogVisualizer

type State = ()

The internal state mutated by the Program.

fn update( &self, _state: &mut Self::State, _event: Event, _bounds: Rectangle, _cursor: Cursor, ) -> (Status, Option<Message>)

Updates the State of the Program.

fn draw( &self, _state: &Self::State, renderer: &Renderer, _theme: &Theme, bounds: Rectangle, _cursor: Cursor, ) -> Vec<Geometry>

Draws the state of the Program, producing a bunch of Geometry.

fn mouse_interaction( &self, _state: &Self::State, _bounds: Rectangle, _cursor: Cursor, ) -> Interaction

Returns the current mouse interaction of the Program.