Struct graphics::Viewport
[−]
[src]
pub struct Viewport { pub rect: [i32; 4], pub draw_size: [u32; 2], pub window_size: [u32; 2], }
Stores viewport information.
Fields
rect  Viewport in pixels.

draw_size  The size of frame buffer in pixels. 
window_size  The size of window in points. 
Methods
impl Viewport
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.