Enum OverlayFill 

pub enum OverlayFill {
    Solid([f32; 4]),
    LinearGradient {
        start_colour: [f32; 4],
        end_colour: [f32; 4],
        angle: f32,
    },
    RadialGradient {
        centre_colour: [f32; 4],
        edge_colour: [f32; 4],
    },
    ConicalGradient {
        start_colour: [f32; 4],
        end_colour: [f32; 4],
        offset_angle: f32,
    },
    LinearGradientMulti {
        stops: Vec<GradientStop>,
        angle: f32,
    },
    RadialGradientMulti {
        stops: Vec<GradientStop>,
    },
    ConicalGradientMulti {
        stops: Vec<GradientStop>,
        offset_angle: f32,
    },
}

Fill style for an [OverlayShapeItem].

Solid is the default and matches the previous single-colour behaviour. LinearGradient, RadialGradient, and ConicalGradient interpolate between two colours across the shape’s bounding box.

Variants

Solid([f32; 4])

Uniform solid colour in linear RGBA float format.

LinearGradient

Linear gradient between two colours.

The gradient runs along angle across the bounding box. angle = 0.0 goes left-to-right (start_colour on the left, end_colour on the right). Positive angles rotate the direction counter-clockwise in math coordinates; because screen Y points downward, angle = PI/2 produces a top-to-bottom gradient (start at top, end at bottom).

Fields

start_colour: [f32; 4]

RGBA colour at the start of the gradient (left when angle is 0).

end_colour: [f32; 4]

RGBA colour at the end of the gradient (right when angle is 0).

angle: f32

Gradient direction in radians. 0.0 = left-to-right.

RadialGradient

Radial gradient running from the shape centre to its bounding-box edge.

centre_colour sits at the shape origin; edge_colour sits at the farthest bounding-box corner. The transition follows length(local_pos) / max_half_size.

Fields

centre_colour: [f32; 4]

RGBA colour at the centre of the shape.

edge_colour: [f32; 4]

RGBA colour at the bounding-box edge.

ConicalGradient

Conical (sweep) gradient rotating around the shape centre.

The hue wraps once around the origin like a colour wheel. offset_angle rotates the seam (where end_colour meets start_colour) counter-clockwise in math coordinates.

Fields

start_colour: [f32; 4]

RGBA colour at the sweep start.

end_colour: [f32; 4]

RGBA colour at the sweep end (wraps back to start).

offset_angle: f32

Rotation offset in radians. 0.0 places the seam to the right.

LinearGradientMulti

Linear gradient with three or more colour stops at arbitrary positions along the gradient axis. Use when a two-stop ramp is too flat; designers commonly stack 3-5 stops for polished surfaces. Stops outside [0, 1] are clamped; more than OVERLAY_MAX_GRADIENT_STOPS entries are truncated.

Fields

stops: Vec<GradientStop>

Stops in source order. Need not be pre-sorted by position; the renderer sorts them at prepare time.

angle: f32

Gradient direction in radians. 0.0 = left-to-right.

RadialGradientMulti

Radial gradient with three or more colour stops between the shape centre and its bounding-box edge.

Fields

stops: Vec<GradientStop>

Stops along the centre-to-edge axis.

ConicalGradientMulti

Conical gradient with three or more colour stops along the sweep.

Fields

stops: Vec<GradientStop>

Stops along the [0, 1] sweep parameter.

offset_angle: f32

Rotation offset in radians.

Trait Implementations

impl Clone for OverlayFill

fn clone(&self) -> OverlayFill

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OverlayFill

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

Formats the value using the given formatter.

impl Default for OverlayFill

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for OverlayFill

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for OverlayFill