image_renderer/
rect.rs

1//! 矩形类型定义
2
3use crate::point::{Point, PointF};
4
5/// 整数矩形
6#[derive(Debug, Clone, Copy, PartialEq, Eq)]
7pub struct Rect {
8    pub x: i32,
9    pub y: i32,
10    pub width: u32,
11    pub height: u32,
12}
13
14impl Rect {
15    /// 创建新的矩形
16    pub fn new(x: i32, y: i32, width: u32, height: u32) -> Self {
17        Self {
18            x,
19            y,
20            width,
21            height,
22        }
23    }
24
25    /// 从 x, y, width, height 创建矩形（与 new 相同，提供兼容性）
26    pub fn from_xywh(x: i32, y: i32, width: u32, height: u32) -> Self {
27        Self::new(x, y, width, height)
28    }
29
30    /// 从 left, top, right, bottom 创建矩形
31    pub fn from_ltrb(left: i32, top: i32, right: i32, bottom: i32) -> Self {
32        let width = (right - left).max(0) as u32;
33        let height = (bottom - top).max(0) as u32;
34        Self::new(left, top, width, height)
35    }
36
37    /// 从左上角点和尺寸创建矩形
38    pub fn from_point_size(point: Point, width: u32, height: u32) -> Self {
39        Self::new(point.x, point.y, width, height)
40    }
41
42    /// 从两个点创建矩形（左上角和右下角）
43    pub fn from_points(p1: Point, p2: Point) -> Self {
44        let x = p1.x.min(p2.x);
45        let y = p1.y.min(p2.y);
46        let width = (p1.x.max(p2.x) - x) as u32;
47        let height = (p1.y.max(p2.y) - y) as u32;
48        Self::new(x, y, width, height)
49    }
50
51    /// 获取左上角点
52    pub fn top_left(&self) -> Point {
53        Point::new(self.x, self.y)
54    }
55
56    /// 获取右下角点
57    pub fn bottom_right(&self) -> Point {
58        Point::new(self.x + self.width as i32, self.y + self.height as i32)
59    }
60
61    /// 获取中心点
62    pub fn center(&self) -> Point {
63        Point::new(
64            self.x + (self.width / 2) as i32,
65            self.y + (self.height / 2) as i32,
66        )
67    }
68
69    /// 判断点是否在矩形内
70    pub fn contains(&self, point: Point) -> bool {
71        point.x >= self.x
72            && point.x < self.x + self.width as i32
73            && point.y >= self.y
74            && point.y < self.y + self.height as i32
75    }
76
77    /// 判断是否与另一个矩形相交
78    pub fn intersects(&self, other: &Rect) -> bool {
79        self.x < other.x + other.width as i32
80            && self.x + self.width as i32 > other.x
81            && self.y < other.y + other.height as i32
82            && self.y + self.height as i32 > other.y
83    }
84}
85
86impl Default for Rect {
87    fn default() -> Self {
88        Self::new(0, 0, 0, 0)
89    }
90}
91
92/// 浮点矩形
93#[derive(Debug, Clone, Copy, PartialEq)]
94pub struct RectF {
95    pub x: f32,
96    pub y: f32,
97    pub width: f32,
98    pub height: f32,
99}
100
101impl RectF {
102    /// 创建新的浮点矩形
103    pub fn new(x: f32, y: f32, width: f32, height: f32) -> Self {
104        Self {
105            x,
106            y,
107            width,
108            height,
109        }
110    }
111
112    /// 从 x, y, width, height 创建矩形（与 new 相同，提供兼容性）
113    pub fn from_xywh(x: f32, y: f32, width: f32, height: f32) -> Self {
114        Self::new(x, y, width, height)
115    }
116
117    /// 从 left, top, right, bottom 创建矩形
118    pub fn from_ltrb(left: f32, top: f32, right: f32, bottom: f32) -> Self {
119        let width = (right - left).max(0.0);
120        let height = (bottom - top).max(0.0);
121        Self::new(left, top, width, height)
122    }
123
124    /// 从左上角点和尺寸创建矩形
125    pub fn from_point_size(point: PointF, width: f32, height: f32) -> Self {
126        Self::new(point.x, point.y, width, height)
127    }
128
129    /// 转换为整数矩形（四舍五入）
130    pub fn to_rect(&self) -> Rect {
131        Rect::new(
132            self.x.round() as i32,
133            self.y.round() as i32,
134            self.width.round() as u32,
135            self.height.round() as u32,
136        )
137    }
138
139    /// 获取中心点
140    pub fn center(&self) -> PointF {
141        PointF::new(self.x + self.width / 2.0, self.y + self.height / 2.0)
142    }
143}
144
145impl Default for RectF {
146    fn default() -> Self {
147        Self::new(0.0, 0.0, 0.0, 0.0)
148    }
149}
150
151impl From<Rect> for RectF {
152    fn from(r: Rect) -> Self {
153        Self::new(r.x as f32, r.y as f32, r.width as f32, r.height as f32)
154    }
155}
156
157/// IRect 类型别名（整数矩形）
158///
159/// 与 Rect 相同，提供与 skia-safe 的兼容性
160pub type IRect = Rect;
image_renderer/rect.rs

image_renderer/
rect.rs
