1 files changed, 31 insertions, 0 deletions
diff --git a/src/doublebuffer.rs b/src/doublebuffer.rs
new file mode 100644
index 0000000..563f157
--- /dev/null
+++ b/src/doublebuffer.rs
@@ -0,0 +1,31 @@
+pub struct DoubleBuffer<T> {
+    a1: Vec<T>,
+    a2: Vec<T>,
+    switch: bool,
+}
+
+impl<T> DoubleBuffer<T> {
+    pub fn new(a1: Vec<T>, a2: Vec<T>) -> Self {
+        Self { a1, a2, switch: false }
+    }
+
+    pub fn switch(&mut self) {
+        self.switch = !self.switch;
+    }
+
+    pub fn first(&self) -> &Vec<T> {
+        if self.switch { &self.a2 } else { &self.a1 }
+    }
+
+    pub fn first_mut(&mut self) -> &mut Vec<T> {
+        if self.switch { &mut self.a2 } else { &mut self.a1 }
+    }
+
+    pub fn second(&self) -> &Vec<T> {
+        if self.switch { &self.a1 } else { &self.a2 }
+    }
+
+    pub fn second_mut(&mut self) -> &mut Vec<T> {
+        if self.switch { &mut self.a1 } else { &mut self.a2 }
+    }
+}