Struct DashPathEffect 

pub struct DashPathEffect { /* private fields */ }

虚线路径效果，将路径描边转为虚线。 Dash path effect for stroked paths (on/off intervals).

Implementations

impl DashPathEffect

pub fn new(intervals: &[f32], phase: f32) -> Option<Self>

创建虚线效果。Creates a dash effect.

intervals: 交替的 on/off 长度，如 [10.0, 20.0] 表示 10 像素 on、20 像素 off intervals: on/off lengths, e.g. [10.0, 20.0] = 10px on, 20px off phase: 相位偏移 phase: phase offset into the pattern

pub fn filter_path(&self, path: &Path, stroke_width: f32) -> Option<Path>

应用到路径。Applies effect to path (requires stroke width).

path: 输入路径 stroke_width: 描边宽度（虚线仅对描边路径有效） path: input path stroke_width: stroke width (dash only affects stroked paths)

失败时返回 None。Returns None on failure.