Trait DrawRounded

pub trait DrawRounded: Draw {
    // Required methods
    fn rounded_line(&mut self, p1: Vec2, p2: Vec2, radius: f32, col: Rgba);
    fn circle(&mut self, rect: Quad, inner_radius: f32, col: Rgba);
    fn circle_2col(&mut self, rect: Quad, col1: Rgba, col2: Rgba);
    fn rounded_frame(
        &mut self,
        outer: Quad,
        inner: Quad,
        inner_radius: f32,
        col: Rgba,
    );
    fn rounded_frame_2col(
        &mut self,
        outer: Quad,
        inner: Quad,
        c1: Rgba,
        c2: Rgba,
    );
}

Extended draw interface for DrawIface providing rounded drawing

All methods draw some feature.

Required Methods

fn rounded_line(&mut self, p1: Vec2, p2: Vec2, radius: f32, col: Rgba)

Draw a line with rounded ends and uniform colour

This command draws a line segment between the points p1 and p2. Pixels within the given radius of this segment are drawn, resulting in rounded ends and width 2 * radius.

Note that for rectangular, axis-aligned lines, DrawImpl::rect should be preferred.

fn circle(&mut self, rect: Quad, inner_radius: f32, col: Rgba)

Draw a circle or oval of uniform colour

More generally, this shape is an axis-aligned oval which may be hollow.

The inner_radius parameter gives the inner radius relative to the outer radius: a value of 0.0 will result in the whole shape being painted, while 1.0 will result in a zero-width line on the outer edge.

fn circle_2col(&mut self, rect: Quad, col1: Rgba, col2: Rgba)

Draw a circle or oval with two colours

More generally, this shape is an axis-aligned oval which may be hollow.

Colour col1 is used at the centre and col2 at the edge with linear blending. The edge is not anti-aliased.

Note: this is drawn before other drawables, allowing it to be used for shadows without masking.

fn rounded_frame( &mut self, outer: Quad, inner: Quad, inner_radius: f32, col: Rgba, )

Draw a frame with rounded corners and uniform colour

All drawing occurs within the outer rect and outside of the inner rect. Corners are circular (or more generally, ovular), centered on the inner corners.

The inner_radius parameter gives the inner radius relative to the outer radius: a value of 0.0 will result in the whole shape being painted, while 1.0 will result in a zero-width line on the outer edge. When inner_radius > 0, the frame will be visually thinner than the allocated area.

fn rounded_frame_2col(&mut self, outer: Quad, inner: Quad, c1: Rgba, c2: Rgba)

Draw a frame with rounded corners with two colours

This is a variant of rounded_frame which blends between two colours, c1 at the inner edge and c2 at the outer edge.

Note: this is drawn before other drawables, allowing it to be used for shadows without masking.

Implementors

impl<'a, DS: DrawSharedImpl> DrawRounded for DrawIface<'a, DS>

where DS::Draw: DrawRoundedImpl,