1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
use crate::{frame::Frame, pixel::Pixel};
use std::ops::{Index, IndexMut};
pub struct View<T> {
pub frame: T,
pub offset: (usize, usize),
pub size: (usize, usize),
}
impl<T> View<T> {
pub fn new(frame: T, offset: (usize, usize), size: (usize, usize)) -> Self {
Self {
frame,
offset,
size,
}
}
pub fn area(&self) -> usize {
self.size.0 * self.size.1
}
}
impl<T> View<&mut T> {
pub fn split_mut_unsafe(&mut self) -> [Self; 2] {
let vert = self.size.0 > self.size.1;
[
Self {
frame: unsafe { std::mem::transmute::<&mut T, &mut T>(&mut self.frame) },
offset: self.offset,
size: if vert {
(self.size.0 / 2, self.size.1)
} else {
(self.size.0, self.size.1 / 2)
},
},
Self {
frame: unsafe { std::mem::transmute::<&mut T, &mut T>(&mut self.frame) },
offset: if vert {
(self.offset.0 + self.size.0 / 2, self.offset.1)
} else {
(self.offset.0, self.offset.1 + self.size.1 / 2)
},
size: if vert {
(self.size.0 - self.size.0 / 2, self.size.1)
} else {
(self.size.0, self.size.1 - self.size.1 / 2)
},
},
]
}
}
impl<T: Copy> View<T> {
pub fn split(&self) -> [Self; 2] {
let vert = self.size.0 > self.size.1;
[
Self {
frame: self.frame,
offset: self.offset,
size: if vert {
(self.size.0 / 2, self.size.1)
} else {
(self.size.0, self.size.1 / 2)
},
},
Self {
frame: self.frame,
offset: if vert {
(self.offset.0 + self.size.0 / 2, self.offset.1)
} else {
(self.offset.0, self.offset.1 + self.size.1 / 2)
},
size: if vert {
(self.size.0 - self.size.0 / 2, self.size.1)
} else {
(self.size.0, self.size.1 - self.size.1 / 2)
},
},
]
}
}
impl<T: Index<(usize, usize), Output = Pixel>> View<&T> {
pub fn diff(va: &Self, vb: &Self) -> f64 {
assert_eq!(va.size, vb.size);
let mut acc = 0.0;
for x in 0..va.size.0 {
for y in 0..va.size.1 {
let a = va[(x, y)];
let b = vb[(x, y)];
acc += Pixel::distance(a, b);
}
}
acc
}
pub fn pixels(&self) -> Vec<Pixel> {
let mut v = vec![];
for x in 0..self.size.0 {
for y in 0..self.size.1 {
v.push(self[(x, y)]);
}
}
v
}
}
impl View<&mut Frame> {
pub fn copy_from(&mut self, other: &View<&Frame>) {
for x in 0..self.size.0 {
for y in 0..self.size.1 {
self[(x, y)] = other[(x, y)];
}
}
}
pub fn set_pixels(&mut self, pixels: &Vec<Pixel>) {
for x in 0..self.size.0 {
for y in 0..self.size.1 {
self[(x, y)] = pixels[x + y * self.size.0]
}
}
}
}
impl<T: Index<(usize, usize), Output = Pixel>> Index<(usize, usize)> for View<&T> {
type Output = Pixel;
#[inline]
fn index(&self, (x, y): (usize, usize)) -> &Self::Output {
&self.frame[(x + self.offset.0, y + self.offset.1)]
}
}
impl<T: Index<(usize, usize), Output = Pixel>> Index<(usize, usize)> for View<&mut T> {
type Output = Pixel;
#[inline]
fn index(&self, (x, y): (usize, usize)) -> &Self::Output {
&self.frame[(x + self.offset.0, y + self.offset.1)]
}
}
impl<T: IndexMut<(usize, usize), Output = Pixel>> IndexMut<(usize, usize)> for View<&mut T> {
#[inline]
fn index_mut(&mut self, (x, y): (usize, usize)) -> &mut Self::Output {
&mut self.frame[(x + self.offset.0, y + self.offset.1)]
}
}
|
