Struct Camera2D 

pub struct Camera2D {
    pub position: Vector2D,
    pub zoom: f64,
    pub rotation: f64,
    pub viewport_width: f64,
    pub viewport_height: f64,
}

A 2D camera that defines the viewport into the game world.

Fields

position: Vector2D

The world-space position of the camera center.

zoom: f64

The zoom factor (1.0 = no zoom, 2.0 = 2x magnification).

rotation: f64

The rotation angle in radians.

viewport_width: f64

The viewport width in screen pixels.

viewport_height: f64

The viewport height in screen pixels.

Implementations

impl Camera2D

Implements camera transformation methods for Camera2D.

pub fn create(viewport_width: f64, viewport_height: f64) -> Camera2D

Creates a new camera centered at the origin with default zoom and no rotation.

Arguments

• f64 - The viewport width in pixels.
• f64 - The viewport height in pixels.

Returns

• Camera2D - The new camera.

pub fn world_to_screen(&self, world: Vector2D) -> Vector2D

Converts a world-space point to screen-space coordinates.

Arguments

• Vector2D - The world-space point.

Returns

• Vector2D - The screen-space point.

pub fn screen_to_world(&self, screen: Vector2D) -> Vector2D

Converts a screen-space point to world-space coordinates.

Arguments

• Vector2D - The screen-space point.

Returns

• Vector2D - The world-space point.

pub fn translate(&mut self, offset: Vector2D)

Moves the camera position by the given offset.

Arguments

• Vector2D - The translation offset in world space.

pub fn zoom_by(&mut self, factor: f64)

Adjusts the zoom by the given factor, clamped to a minimum of EPSILON.

Arguments

• f64 - The zoom multiplier.

impl Camera2D

pub fn get_position(&self) -> Vector2D

pub fn set_position(&mut self, val: Vector2D) -> &mut Self

pub fn get_zoom(&self) -> f64

pub fn set_zoom(&mut self, val: f64) -> &mut Self

pub fn get_rotation(&self) -> f64

pub fn set_rotation(&mut self, val: f64) -> &mut Self

pub fn get_viewport_width(&self) -> f64

pub fn get_viewport_height(&self) -> f64

impl Camera2D

pub fn new( position: Vector2D, zoom: f64, rotation: f64, viewport_width: f64, viewport_height: f64, ) -> Self

Trait Implementations

impl Clone for Camera2D

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Camera2D

impl Debug for Camera2D

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

Formats the value using the given formatter.

impl Default for Camera2D

Implements Default for Camera2D as a camera at the origin with 800x600 viewport.

fn default() -> Camera2D

Constructs a default Camera2D value.

Returns

• Camera2D - A default-constructed instance with the documented initial state.

impl PartialEq for Camera2D

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Camera2D

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Camera2D