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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165

use std::ops::{Add, AddAssign, Mul, Sub, SubAssign};
use num::Zero;

use crate::core::{Point_, Size_, ValidPointType, ValidSizeType};

valid_types!(ValidRectType, i32, f32, f64);

#[repr(C)]
#[derive(Copy, Clone, Debug, PartialEq)]
pub struct Rect_<T: ValidRectType> {
    pub x: T,
    pub y: T,
    pub width: T,
    pub height: T,
}

impl<T: ValidRectType> Rect_<T> {
    pub fn new(x: T, y: T, width: T, height: T) -> Self {
        Self { x, y, width, height }
    }
}

impl<T: ValidRectType + ValidPointType> Rect_<T> {
    #[inline]
    pub fn tl(&self) -> Point_<T> {
        Point_::new(self.x, self.y)
    }
}

impl<T: ValidRectType + ValidPointType + Add<T, Output=T>> Rect_<T> {
    #[inline]
    pub fn br(&self) -> Point_<T> {
        Point_::new(self.x + self.width, self.y + self.height)
    }
}

impl<T: ValidRectType + ValidSizeType> Rect_<T> {
    #[inline]
    pub fn size(&self) -> Size_<T> {
        Size_::new(self.width, self.height)
    }
}

impl<T: ValidRectType + Mul<T, Output=T>> Rect_<T> {
    #[inline]
    pub fn area(&self) -> T {
        self.width * self.height
    }
}

impl<T: ValidRectType + Zero + PartialOrd> Rect_<T> {
    #[inline]
    pub fn empty(&self) -> bool {
        self.width <= T::zero() || self.height <= T::zero()
    }
}

impl<T: ValidRectType + ValidPointType + Add<T, Output=T> + PartialOrd> Rect_<T> {
    #[inline]
    pub fn contains(&self, pt: Point_<T>) -> bool {
        self.x <= pt.x && pt.x < self.x + self.width && self.y <= pt.y && pt.y < self.y + self.height
    }
}

impl<T: ValidRectType + Default> Default for Rect_<T> {
    fn default() -> Self {
        Self { x: Default::default(), y: Default::default(), width: Default::default(), height: Default::default() }
    }
}

impl<P, R> Add<Point_<P>> for Rect_<R>
    where
        P: ValidPointType,
        R: ValidRectType + AddAssign<P>
{
    type Output = Rect_<R>;

    fn add(mut self, rhs: Point_<P>) -> Self::Output {
        self += rhs;
        self
    }
}

impl<P, R> Sub<Point_<P>> for Rect_<R>
    where
        P: ValidPointType,
        R: ValidRectType + SubAssign<P>
{
    type Output = Rect_<R>;

    fn sub(mut self, rhs: Point_<P>) -> Self::Output {
        self -= rhs;
        self
    }
}

impl<S, R> Add<Size_<S>> for Rect_<R>
    where
        S: ValidSizeType,
        R: ValidRectType + AddAssign<S>
{
    type Output = Rect_<R>;

    fn add(mut self, rhs: Size_<S>) -> Self::Output {
        self += rhs;
        self
    }
}

impl<S, R> Sub<Size_<S>> for Rect_<R>
    where
        S: ValidSizeType,
        R: ValidRectType + SubAssign<S>
{
    type Output = Rect_<R>;

    fn sub(mut self, rhs: Size_<S>) -> Self::Output {
        self -= rhs;
        self
    }
}

impl<P, R> AddAssign<Point_<P>> for Rect_<R>
    where
        P: ValidPointType,
        R: ValidRectType + AddAssign<P>
{
    fn add_assign(&mut self, rhs: Point_<P>) {
        self.x += rhs.x;
        self.y += rhs.y;
    }
}

impl<P, R> SubAssign<Point_<P>> for Rect_<R>
    where
        P: ValidPointType,
        R: ValidRectType + SubAssign<P>
{
    fn sub_assign(&mut self, rhs: Point_<P>) {
        self.x -= rhs.x;
        self.y -= rhs.y;
    }
}

impl<S, R> AddAssign<Size_<S>> for Rect_<R>
    where
        S: ValidSizeType,
        R: ValidRectType + AddAssign<S>
{
    fn add_assign(&mut self, rhs: Size_<S>) {
        self.width += rhs.width;
        self.height += rhs.height;
    }
}

impl<S, R> SubAssign<Size_<S>> for Rect_<R>
    where
        S: ValidSizeType,
        R: ValidRectType + SubAssign<S>
{
    fn sub_assign(&mut self, rhs: Size_<S>) {
        self.width -= rhs.width;
        self.height -= rhs.height;
    }
}