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

#[repr(C)]
#[derive(Debug, Clone, PartialEq)]
pub struct Vec2<T> {
    pub x: T,
    pub y: T
}

impl <T> Eq for Vec2<T> where T: PartialEq {}

impl <T> Vec2 <T> {
    #[inline]
    pub fn new(x: T, y: T) -> Self {
        Self { x, y }
    }

    pub fn as_ptr(&self) -> *const T {
        self as *const _ as *const T
    }

    pub fn as_mut_ptr(&mut self) -> *mut T {
        self as *mut _ as *mut T
    }

        ///
    /// ```
    /// use gfxmath_vec2::Vec2;
    /// 
    /// let a = Vec2::<f32>::new(1.0, 2.0);
    /// 
    /// let a_slice = a.as_slice();
    /// 
    /// assert_eq!(1.0, a_slice[0]);
    /// assert_eq!(2.0, a_slice[1]);
    /// ```
    pub fn as_slice(&self) -> &[T] {
        unsafe { std::slice::from_raw_parts(self.as_ptr(), 2) }
    }

    ///
    /// ```
    /// use gfxmath_vec2::Vec2;
    /// 
    /// let mut a = Vec2::<f32>::new(1.0, 2.0);
    /// 
    /// {
    ///     let a_slice = a.as_mut_slice();
    /// 
    ///     assert_eq!(1.0, a_slice[0]);
    ///     assert_eq!(2.0, a_slice[1]);
    /// 
    ///     a_slice[1] = 108.0;
    ///     assert_eq!(108.0, a_slice[1]); 
    /// }
    /// 
    /// a.x = 4.5;
    /// assert_eq!(4.5, a.x);
    /// 
    /// let a_slice = a.as_mut_slice();
    /// 
    /// assert_eq!(4.5, a_slice[0]);
    /// assert_eq!(108.0, a_slice[1]);
    /// ```
    pub fn as_mut_slice(&mut self) -> &mut [T] {
        unsafe { std::slice::from_raw_parts_mut(self.as_mut_ptr(), 2) }
    }
}

impl <T> Vec2<T> where T: Clone {
    /// ```
    /// use gfxmath_vec2::Vec2;
    /// 
    /// let v = Vec2::<f32>::all(2.5);
    /// 
    /// assert_eq!(2.5, v.x);
    /// assert_eq!(2.5, v.y);
    /// ```
    #[inline]
    pub fn all(val: T) -> Self {
        Self::new(val.clone(), val.clone())
    }
}

///
/// ```
/// use gfxmath_vec2::Vec2;
/// 
/// let v: Vec2<f32> = (3.0, 2.0).into();
/// 
/// assert_eq!(3.0, v.x);
/// assert_eq!(2.0, v.y);
/// ```
impl <T> From<(T, T)> for Vec2<T> {
    fn from(val: (T, T)) -> Self {
        Vec2::new(val.0, val.1)
    }
}

///
/// ```
/// use gfxmath_vec2::Vec2;
/// 
/// let v0 = (3.0, 2.0);
/// 
/// let v: Vec2<f32> = (&v0).into();
/// 
/// assert_eq!(3.0, v.x);
/// assert_eq!(2.0, v.y);
/// ```
impl <T> From<&(T, T)> for Vec2<T> where T: Clone {
    fn from(val: &(T, T)) -> Self {
        Vec2::new(val.0.clone(), val.1.clone())
    }
}

///
/// ```
/// use gfxmath_vec2::Vec2;
/// 
/// let v = Vec2::new(3.0, 2.0);
/// let v: (f32, f32) = v.into();
/// 
/// assert_eq!(3.0, v.0);
/// assert_eq!(2.0, v.1);
/// 
/// ```
impl <T> From<Vec2<T>> for (T, T) {
    fn from(val: Vec2<T>) -> Self {
        (val.x, val.y)
    }
}

///
/// ```
/// use gfxmath_vec2::Vec2;
/// 
/// let v = Vec2::new(3.0, 2.0);
/// let v: (f32, f32) = (&v).into();
/// 
/// assert_eq!(3.0, v.0);
/// assert_eq!(2.0, v.1);
/// ```
impl <T> From<&Vec2<T>> for (T, T) where T: Clone {
    fn from(val: &Vec2<T>) -> Self {
        (val.x.clone(), val.y.clone())
    }
}

/// ```
/// use gfxmath_vec2::{Vec2, vec2};
/// let v = vec2!(2.0, 3.0);
/// assert_eq!(2.0, v.x);
/// assert_eq!(3.0, v.y);
/// ```
#[macro_export]
macro_rules! vec2 {
    ($x: expr, $y: expr) => {
        {
            Vec2::new($x, $y)
        }
    }
}