Enum MaskShape 

#[non_exhaustive]
pub enum MaskShape {
    Rect {
        rect: Rect,
    },
    RoundedRect {
        rect: Rect,
        radius: f32,
    },
    Circle {
        center: Vec2,
        radius: f32,
    },
    Ellipse {
        center: Vec2,
        half_extents: Vec2,
    },
}

Shape of a clip / mask region.

Variants land issue-by-issue:

• MaskShape::Rect — AUT-20 rectangle privacy mask.
• MaskShape::RoundedRect — AUT-31 rounded crop foundation.
• MaskShape::Circle — AUT-30 webcam circle mask.
• MaskShape::Ellipse — AUT-34 oval / ellipse mask.

Later issues (AUT-35 freehand path) extend this enum further.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Rect

Sharp-corner rectangle in NDC. The renderer treats this as a RoundedRect with radius = 0 and routes through the same SDF pipeline.

Fields

rect: Rect

Axis-aligned bounding rect, NDC coords.

RoundedRect

Rounded rectangle in NDC. rect is the axis-aligned bounding box, radius is the corner radius in NDC units (clamped at render-time to half the smaller side).

Fields

rect: Rect

Axis-aligned bounding rect, NDC coords.

radius: f32

Corner radius in NDC units.

Circle

Circle in NDC. The renderer treats this as a RoundedRect with a square bounding box and a corner radius equal to the half-extent — the rounded-rect SDF degenerates exactly to the circle SDF in that case (length(p) - r).

Fields

center: Vec2

Center, NDC coords.

radius: f32

Radius, NDC units.

Ellipse

Axis-aligned ellipse in NDC. half_extents is (a, b) of the implicit equation (x/a)^2 + (y/b)^2 = 1. The renderer uses a scaled-quadratic pseudo-SDF that’s anisotropic-correct and cheap (one length, one multiply); not Euclidean distance, but accurate enough for masking and AA.

Fields

center: Vec2

Center, NDC coords.

half_extents: Vec2

Half-extents (a, b), NDC units.

Implementations

impl MaskShape

pub fn rect(rect: Rect) -> Self

Convenience constructor for a sharp-corner rectangle.

pub fn rounded_rect(rect: Rect, radius: f32) -> Self

Convenience constructor for a rounded rectangle.

pub fn circle(center: Vec2, radius: f32) -> Self

Convenience constructor for a circle.

pub fn ellipse(center: Vec2, half_extents: Vec2) -> Self

Convenience constructor for an axis-aligned ellipse.

pub fn bounds(self) -> Rect

The axis-aligned bounding rect of the mask.

Trait Implementations

impl Clone for MaskShape

fn clone(&self) -> MaskShape

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MaskShape

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

Formats the value using the given formatter.

impl PartialEq for MaskShape

fn eq(&self, other: &MaskShape) -> 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 Copy for MaskShape

impl StructuralPartialEq for MaskShape