Struct Path 

pub struct Path { /* private fields */ }

路径的 safe 封装，对应 SkPath。Safe wrapper for SkPath.

Implementations

impl Path

pub fn new() -> Self

创建空路径。Creates an empty path.

pub fn from_path(other: &Path) -> Self

从已有路径复制。Creates a copy of the given path.

pub fn reset(&mut self)

清空路径。Empties the path.

pub fn is_empty(&self) -> bool

是否为空。Returns true if the path has no points.

pub fn count_points(&self) -> i32

点的数量。Returns the number of points in the path.

pub fn count_verbs(&self) -> i32

动词的数量。Returns the number of verbs (move, line, quad, cubic, close).

pub fn iter(&self, force_close: bool) -> PathIter<'_>

迭代路径中的动词与点。Iterates over path verbs and points.

force_close 为 true 时，开放轮廓会生成隐式 close。 When force_close is true, open contours generate implicit close.

pub fn get_point(&self, index: i32) -> Option<Point>

获取第 i 个点。Returns the point at index, or None if out of range.

pub fn tight_bounds(&self) -> Rect

计算紧密包围盒。Returns the tight axis-aligned bounding box.

永不失败；空路径返回 (0,0,0,0)。对复杂曲线，pathops_tight_bounds 可能更精确但可能返回 None。 Never fails; empty path returns (0,0,0,0). For complex curves, pathops_tight_bounds may be more accurate but can return None.

pub fn is_last_contour_closed(&self) -> bool

最后一段轮廓是否闭合。Returns true if the last contour ends with close().

pub fn conservatively_contains_rect(&self, rect: &Rect) -> bool

保守判断是否包含矩形。May return false for some contained rects. Works for single convex contour paths.

pub fn is_rect(&self) -> Option<(Rect, bool)>

是否可表示为矩形。Returns Some((rect, is_closed)) if path is a rect, None otherwise.

pub fn contains(&self, x: f32, y: f32) -> bool

是否包含点。Returns true if (x, y) is inside the filled path.

使用 SkPath 当前 fill type（默认 even-odd）。 Uses SkPath’s current fill type (default even-odd).

pub fn move_to(&mut self, x: f32, y: f32) -> &mut Self

移动到 (x, y)，开始新轮廓。Moves to (x, y) and starts a new contour.

pub fn line_to(&mut self, x: f32, y: f32) -> &mut Self

画线到 (x, y)。Adds a line from current point to (x, y).

需先调用 move_to；否则 Skia 以 (0, 0) 为隐式起点。 Requires prior move_to; otherwise Skia uses (0, 0) as implicit start.

pub fn quad_to(&mut self, x1: f32, y1: f32, x2: f32, y2: f32) -> &mut Self

二次贝塞尔曲线。Adds a quadratic bezier (control point, end point).

pub fn cubic_to( &mut self, x1: f32, y1: f32, x2: f32, y2: f32, x3: f32, y3: f32, ) -> &mut Self

三次贝塞尔曲线。Adds a cubic bezier (ctrl1, ctrl2, end point).

pub fn close(&mut self) -> &mut Self

闭合当前轮廓。Closes the current contour (line back to first point).

pub fn add_rect( &mut self, rect: &Rect, dir: Direction, start: RectCorner, ) -> &mut Self

添加矩形。Adds a rectangle as a closed contour.

pub fn add_oval(&mut self, rect: &Rect, dir: Direction) -> &mut Self

添加椭圆（由矩形包围）。Adds an oval (ellipse) bounded by the given rect.

pub fn add_circle( &mut self, cx: f32, cy: f32, radius: f32, dir: Direction, ) -> &mut Self

添加圆。Adds a circle centered at (cx, cy) with given radius.

radius 应 ≥ 0；负值时 Skia 行为未定义。 radius should be ≥ 0; negative values have undefined Skia behavior.

pub fn add_round_rect( &mut self, rect: &Rect, rx: f32, ry: f32, dir: Direction, ) -> &mut Self

添加圆角矩形。Adds a rounded rectangle (rx, ry = corner radii).

rx, ry 应 ≥ 0。Should be ≥ 0.

pub fn add_rrect(&mut self, rrect: &RRect, dir: Direction) -> &mut Self

添加 RRect（支持四角独立半径）。Adds RRect with per-corner radii.

pub fn add_rrect_with_start( &mut self, rrect: &RRect, dir: Direction, start: RectCorner, ) -> &mut Self

添加 RRect 并指定起始角。Adds RRect with start corner.

pub fn is_rrect(&self) -> Option<RRect>

路径是否可表示为 RRect。Returns Some(rrect) if path is an RRect, None otherwise.

Trait Implementations

impl Clone for Path

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Path

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

Formats the value using the given formatter.

impl Default for Path

fn default() -> Self

Returns the “default value” for a type.