x_graphics/
matrix.rs

1use std::ops::Mul;
2
3use crate::{geometry::FRect, DefaultMatrix, Float};
4
5pub trait MatrixBackend: Clone + Mul<Self, Output = Self> + Sized {
6    fn identity() -> Self
7    where
8        Self: Sized;
9    fn from_row(scx: Float, sky: Float, skx: Float, scy: Float, tx: Float, ty: Float) -> Self
10    where
11        Self: Sized;
12    fn from_translate(x: Float, y: Float) -> Self
13    where
14        Self: Sized;
15    fn from_scale(x: Float, y: Float) -> Self
16    where
17        Self: Sized;
18    fn from_rotate(angle: Float) -> Self
19    where
20        Self: Sized;
21    fn pre_rotate(&mut self, angle: Float);
22    fn pre_scale(&mut self, x: Float, y: Float);
23    fn pre_translate(&mut self, x: Float, y: Float);
24    fn post_rotate(&mut self, angle: Float);
25    fn post_scale(&mut self, x: Float, y: Float);
26    fn post_translate(&mut self, x: Float, y: Float);
27    fn map_rect(&self, rect: FRect) -> FRect;
28}
29
30impl<T: MatrixBackend> Default for Matrix<T> {
31    fn default() -> Self {
32        Self::identity()
33    }
34}
35
36pub struct Matrix<T: MatrixBackend> {
37    pub(crate) backend: T,
38}
39
40impl<T: MatrixBackend> Matrix<T> {
41    pub fn identity() -> Self {
42        Self {
43            backend: T::identity(),
44        }
45    }
46
47    pub fn from_row(scx: Float, sky: Float, skx: Float, scy: Float, tx: Float, ty: Float) -> Self {
48        Self {
49            backend: T::from_row(scx, sky, skx, scy, tx, ty),
50        }
51    }
52
53    pub fn from_translate(x: Float, y: Float) -> Self {
54        Self {
55            backend: T::from_translate(x, y),
56        }
57    }
58
59    pub fn from_scale(x: Float, y: Float) -> Self {
60        Self {
61            backend: T::from_scale(x, y),
62        }
63    }
64
65    pub fn from_rotate(angle: Float) -> Self {
66        Self {
67            backend: T::from_rotate(angle),
68        }
69    }
70
71    pub fn pre_rotate(&mut self, angle: Float) {
72        self.backend.pre_rotate(angle)
73    }
74
75    pub fn pre_scale(&mut self, x: Float, y: Float) {
76        self.backend.pre_scale(x, y)
77    }
78
79    pub fn pre_translate(&mut self, x: Float, y: Float) {
80        self.backend.pre_translate(x, y)
81    }
82
83    pub fn post_rotate(&mut self, angle: Float) {
84        self.backend.post_rotate(angle)
85    }
86
87    pub fn post_scale(&mut self, x: Float, y: Float) {
88        self.backend.post_scale(x, y)
89    }
90
91    pub fn post_translate(&mut self, x: Float, y: Float) {
92        self.backend.post_translate(x, y)
93    }
94
95    pub fn map_rect(&self, rect: FRect) -> FRect {
96        self.backend.map_rect(rect)
97    }
98}
99
100impl Matrix<DefaultMatrix> {
101    pub fn default_identity() -> Self {
102        Self::identity()
103    }
104
105    pub fn default_from_row(scx: Float, sky: Float, skx: Float, scy: Float, tx: Float, ty: Float) -> Self {
106        Self::from_row(scx, sky, skx, scy, tx, ty)
107    }
108
109    pub fn default_from_translate(x: Float, y: Float) -> Self {
110        Self::from_translate(x, y)
111    }
112
113    pub fn default_from_scale(x: Float, y: Float) -> Self {
114        Self::from_scale(x, y)
115    }
116
117    pub fn default_from_rotate(angle: Float) -> Self {
118        Self::from_rotate(angle)
119    }
120}
x_graphics/matrix.rs

x_graphics/
matrix.rs
