1 files changed, 68 insertions, 0 deletions
diff --git a/lvc/src/impls.rs b/lvc/src/impls.rs
new file mode 100644
index 0000000..01eb1c6
--- /dev/null
+++ b/lvc/src/impls.rs
@@ -0,0 +1,68 @@
+use crate::{Frame, Pixel, View, P2};
+use std::ops::{Add, Index, IndexMut, Sub};
+
+impl Add for Pixel {
+    type Output = Pixel;
+    #[inline]
+    fn add(self, rhs: Self) -> Self::Output {
+        Self {
+            r: self.r + rhs.r,
+            g: self.g + rhs.g,
+            b: self.b + rhs.b,
+        }
+    }
+}
+impl P2 {
+    pub const ZERO: P2 = P2 { x: 0, y: 0 };
+    #[inline]
+    pub fn area(&self) -> usize {
+        (self.x * self.y) as usize
+    }
+}
+impl View {
+    #[inline]
+    pub fn all(b: P2) -> Self {
+        Self {
+            a: P2::default(),
+            b,
+        }
+    }
+    #[inline]
+    pub fn size(&self) -> P2 {
+        self.b - self.a
+    }
+}
+impl Add for P2 {
+    type Output = P2;
+    #[inline]
+    fn add(self, rhs: Self) -> Self::Output {
+        Self {
+            x: self.x + rhs.x,
+            y: self.y + rhs.y,
+        }
+    }
+}
+impl Sub for P2 {
+    type Output = P2;
+    #[inline]
+    fn sub(self, rhs: Self) -> Self::Output {
+        Self {
+            x: self.x - rhs.x,
+            y: self.y - rhs.y,
+        }
+    }
+}
+
+impl Index<P2> for Frame {
+    type Output = Pixel;
+    #[inline]
+    fn index(&self, P2 { x, y }: P2) -> &Self::Output {
+        &self.pixels[x as usize + (y as usize * self.size.x as usize)]
+    }
+}
+impl IndexMut<P2> for Frame {
+    #[inline]
+    fn index_mut(&mut self, P2 { x, y }: P2) -> &mut Self::Output {
+        &mut self.pixels[x as usize + (y as usize * self.size.x as usize)]
+    }
+}