Struct graphics::Viewport

pub struct Viewport {
    pub rect: [i32; 4],
    pub draw_size: [u32; 2],
    pub window_size: [u32; 2],
}

Stores viewport information.

Fields

rect: [i32; 4]

Viewport in pixels. [x, y, width height] where (x, y) is lower left corner.

draw_size: [u32; 2]

The size of frame buffer in pixels.

window_size: [u32; 2]

The size of window in points.

Implementations

impl Viewport

pub fn abs_transform<T>(&self) -> [[T; 3]; 2]where
    T: Float,

Computes absolute transform for 2D graphics, which uses a row major 2x3 matrix. The origin is in the upper left corner of the viewport rectangle. The x axis points to the right, and the y axis points down. The units are in points (window coordinates).

It is assumed that the underlying coordinate system is normalized with the origin in the center, such that (-1.0, 1.0) in the underlying coordinate system corresponds to the upper left corner of the viewport.

Trait Implementations

impl Clone for Viewport

fn clone(&self) -> Viewport

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Viewport

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

Formats the value using the given formatter.

impl Hash for Viewport

fn hash<__H>(&self, state: &mut __H)where
    __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq<Viewport> for Viewport

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for Viewport

impl Eq for Viewport

impl StructuralEq for Viewport

impl StructuralPartialEq for Viewport