Struct Matrix 

pub struct Matrix { /* private fields */ }

3x3 变换矩阵

用于 2D 仿射变换，矩阵布局：

| a  c  e |
| b  d  f |
| 0  0  1 |

Implementations

impl Matrix

pub fn identity() -> Self

创建单位矩阵

pub fn translate(dx: f32, dy: f32) -> Self

创建平移矩阵

pub fn scale(sx: f32, sy: f32) -> Self

创建缩放矩阵

pub fn rotate(degrees: f32) -> Self

创建旋转矩阵（角度制）

pub fn rotate_at(degrees: f32, px: f32, py: f32) -> Self

创建绕指定点旋转的矩阵

pub fn skew(sx: f32, sy: f32) -> Self

创建倾斜矩阵

pub fn from_values(values: [f32; 6]) -> Self

从数组创建矩阵

pub fn values(&self) -> [f32; 6]

获取矩阵元素

pub fn scale_x(&self) -> f32

获取矩阵的 a 元素（x 缩放）

pub fn skew_y(&self) -> f32

获取矩阵的 b 元素（y 倾斜）

pub fn skew_x(&self) -> f32

获取矩阵的 c 元素（x 倾斜）

pub fn scale_y(&self) -> f32

获取矩阵的 d 元素（y 缩放）

pub fn translate_x(&self) -> f32

获取矩阵的 e 元素（x 平移）

pub fn translate_y(&self) -> f32

获取矩阵的 f 元素（y 平移）

pub fn pre_translate(&self, dx: f32, dy: f32) -> Self

应用平移变换

pub fn pre_scale(&self, sx: f32, sy: f32) -> Self

应用缩放变换

pub fn pre_rotate(&self, degrees: f32) -> Self

应用旋转变换

pub fn post_translate(&self, dx: f32, dy: f32) -> Self

后置平移变换

pub fn post_scale(&self, sx: f32, sy: f32) -> Self

后置缩放变换

pub fn post_rotate(&self, degrees: f32) -> Self

后置旋转变换

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

变换点（接受 x, y 坐标）

pub fn map_pointf(&self, point: PointF) -> PointF

变换 PointF 对象

pub fn map_points(&self, points: &[PointF]) -> Vec<PointF>

变换多个点

pub fn post_concat(&self, other: &Matrix) -> Self

后置连接矩阵（this * other）

pub fn map_rect(&self, rect: RectF) -> RectF

变换矩形

pub fn invert(&self) -> Option<Self>

计算逆矩阵

pub fn is_identity(&self) -> bool

判断是否为单位矩阵

pub fn is_translate(&self) -> bool

判断是否仅包含平移

pub fn is_scale_translate(&self) -> bool

判断是否仅包含缩放和平移

pub fn reset(&mut self)

重置为单位矩阵

pub fn set_translate(&mut self, dx: f32, dy: f32)

设置为平移矩阵

pub fn set_scale(&mut self, sx: f32, sy: f32)

设置为缩放矩阵

pub fn set_rotate(&mut self, degrees: f32)

设置为旋转矩阵

Trait Implementations

impl Clone for Matrix

fn clone(&self) -> Matrix

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Matrix

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

Formats the value using the given formatter.

impl Default for Matrix

fn default() -> Self

Returns the “default value” for a type.

impl Mul for Matrix

矩阵乘法

type Output = Matrix

The resulting type after applying the * operator.

fn mul(self, rhs: Self) -> Self::Output

Performs the * operation.

impl PartialEq for Matrix

fn eq(&self, other: &Matrix) -> 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 Matrix

impl StructuralPartialEq for Matrix