Struct Camera 

pub struct Camera {
    pub offset: Vec2,
    pub scale: f32,
    /* private fields */
}

2D camera that can be controlled by mouse. Offset and scale can be changed.

Note: You can get a Camera2D using `let cam2d: Camera2D = (&cam).into();

Fields

offset: Vec2

scale: f32

Implementations

impl Camera

pub const fn new(offset: Vec2, scale: f32) -> Camera

pub fn scale_wheel(&mut self, center: Vec2, wheel_value: f32, scale_factor: f32)

If wheel_value has positive value, scale cam around point center by factor scale_factor. If wheel_value is negative, then scale by 1.0/scale_factor. If wheel_value equals 0.0 or scale_factor equals 1.0, nothing happens.

pub fn scale_mul(&mut self, center: Vec2, mul_to_scale: f32)

Adds mul_to_scale to current scale of cam. Scale is changed around point center.

pub fn scale_new(&mut self, center: Vec2, new_scale: f32)

Replace current scale of camera with new_scale. Scale is changed around point center.

pub fn update(&mut self, mouse_pos: Vec2, should_offset: bool)

Update camera position by new mouse position. This method must be run at every frame. should_offset controls if the camera should actually move or not.

Note: It’s better to use mouse_position_local with this method, otherwise if you use mouse_position the movement is way too big.

Trait Implementations

impl Clone for Camera

fn clone(&self) -> Camera

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Camera

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

Formats the value using the given formatter.

impl Default for Camera

fn default() -> Camera

Returns the “default value” for a type.

impl From<&Camera> for Camera2D

fn from(val: &Camera) -> Camera2D

Converts to this type from the input type.

impl Copy for Camera