Struct FrontPolygon 

pub struct FrontPolygon { /* private fields */ }

The part of a rectangle in front of a perspective’s eye, mapped: a convex polygon of up to five corners, in order around it. Empty when the whole rectangle lies behind the eye.

Implementations

impl FrontPolygon

pub fn of_rect(rect: Rect) -> FrontPolygon

The whole of rect, which lies in a plane with no perspective: corners top-left, top-right, bottom-right, bottom-left.

pub fn corners(&self) -> &[[f32; 2]]

The corners in order around the polygon.

pub fn is_empty(&self) -> bool

Whether no part of the rectangle lies in front of the eye.

pub fn strip(&self) -> [[f32; 2]; 5]

The corners in triangle-strip order: the strip covers the polygon, which is convex.

pub fn bounds(&self) -> Rect

Axis-aligned bounds of the polygon; empty at the origin when the polygon is.

Trait Implementations

impl Clone for FrontPolygon

fn clone(&self) -> FrontPolygon

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FrontPolygon

impl Debug for FrontPolygon

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

Formats the value using the given formatter.

impl PartialEq for FrontPolygon

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for FrontPolygon