imgproc-rs 0.2.0

Image processing library for Rust
Documentation 
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

use crate::image::{Image, BaseImage, Number};

/// A struct representing a pixel iterator for an image
pub struct PixelIter<'a, T: Number> {
    image: &'a Image<T>,
    index: usize,
}

pub struct PixelIter2d<'a, T: Number> {
    image: &'a Image<T>,
    pub x: u32,
    pub y: u32,
}

pub struct Iter2d {
    x: u32,
    y: u32,
    x_max: u32,
    y_max: u32,
}

impl Iter2d {
    pub fn new(x_max: u32, y_max: u32) -> Self {
        Iter2d {
            x: 0,
            y: 0,
            x_max,
            y_max,
        }
    }
}

impl Iterator for Iter2d {
    type Item = (u32, u32);

    fn next(&mut self) -> Option<Self::Item> {
        self.x += 1;

        if self.x >= self.x_max {
            if self.y == self.y_max - 1 {
                return None;
            } else {
                self.x = 0;
                self.y += 1;
            }
        }

        Some((self.x - 1, self.y))
    }
}

// impl IndexedParallelIterator for Iter2d {
//     fn len(&self) -> usize {
//         unimplemented!()
//     }
//
//     fn drive<C: Consumer<Self::Item>>(self, consumer: C) -> <C as Consumer<Self::Item>>::Result {
//         unimplemented!()
//     }
//
//     fn with_producer<CB: ProducerCallback<Self::Item>>(self, callback: CB) -> <CB as ProducerCallback<Self::Item>>::Output {
//         unimplemented!()
//     }
// }
//
// impl ParallelIterator for Iter2d {
//     type Item = (u32, u32);
//
//     fn drive_unindexed<C>(self, consumer: C) -> <C as Consumer<Self::Item>>::Result where
//         C: UnindexedConsumer<Self::Item> {
//
//     }
// }

impl<T: Number> IntoIterator for &Image<T> {
    type Item = (u32, u32);
    type IntoIter = Iter2d;

    fn into_iter(self) -> Self::IntoIter {
        Iter2d::new(self.info.width, self.info.height)
    }
}

impl<'a, T: Number> PixelIter<'a, T> {
    pub fn new(image: &'a Image<T>) -> Self {
        PixelIter {
            image,
            index: 0,
        }
    }
}

impl<'a, T: Number> Iterator for PixelIter<'a, T> {
    type Item = &'a [T];

    fn next(&mut self) -> Option<Self::Item> {
        self.index += 1;

        if self.index >= self.image.info().size() as usize {
            None
        } else {
            Some(&self.image[self.index-1])
        }
    }
}

impl<'a, T: Number> PixelIter2d<'a, T> {
    pub fn new(image: &'a Image<T>) -> Self {
        PixelIter2d {
            image,
            x: 0,
            y: 0,
        }
    }
}

impl<'a, T: Number> Iterator for PixelIter2d<'a, T> {
    type Item = &'a [T];

    fn next(&mut self) -> Option<Self::Item> {
        self.x += 1;

        if self.x >= self.image.info().width {
            if self.y == self.image.info().height - 1 {
                return None;
            } else {
                self.x = 0;
                self.y += 1;
            }
        }

        Some(self.image.get_pixel(self.x - 1, self.y))
    }
}