Struct ViewportState 

pub struct ViewportState {
    pub canvas_width: u32,
    pub canvas_height: u32,
    pub transform: ViewportTransform,
    pub visible_bounds: (f64, f64, f64, f64),
    pub zoom_level: u32,
}

Viewport state with transformation and bounds

Fields

canvas_width: u32

Canvas width in pixels

canvas_height: u32

Canvas height in pixels

transform: ViewportTransform

Viewport transformation

visible_bounds: (f64, f64, f64, f64)

Visible bounds in world coordinates (min_x, min_y, max_x, max_y)

zoom_level: u32

Current zoom level

Implementations

impl ViewportState

pub fn new(canvas_width: u32, canvas_height: u32) -> Self

Creates a new viewport state

pub fn update_transform(&mut self, transform: ViewportTransform)

Updates the viewport transform

pub fn pan(&mut self, dx: f64, dy: f64)

Pans the viewport

pub fn zoom(&mut self, factor: f64, center_x: f64, center_y: f64)

Zooms the viewport

pub fn fit_to_bounds(&mut self, bounds: (f64, f64, f64, f64))

Fits the viewport to bounds

pub fn visible_tiles(&self, tile_size: u32) -> Vec<TileCoord>

Returns the tiles visible in this viewport

Trait Implementations

impl Clone for ViewportState

fn clone(&self) -> ViewportState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ViewportState

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

Formats the value using the given formatter.

impl PartialEq for ViewportState

fn eq(&self, other: &ViewportState) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ViewportState