rename + readme

1 files changed, 42 insertions, 0 deletions

diff --git a/bv1/codec/src/split.rs b/bv1/codec/src/split.rs
new file mode 100644
index 0000000..c17179e
--- /dev/null
+++ b/bv1/codec/src/split.rs
@@ -0,0 +1,42 @@
+use crate::{View, P2};
+
+pub fn split(view: View) -> [View; 2] {
+    let s = view.size();
+    if s.x > s.y {
+        let mid_x = (view.a.x + view.b.x) / 2;
+        [
+            View {
+                a: view.a,
+                b: P2 {
+                    x: mid_x,
+                    y: view.b.y,
+                },
+            },
+            View {
+                a: P2 {
+                    x: mid_x,
+                    y: view.a.y,
+                },
+                b: view.b,
+            },
+        ]
+    } else {
+        let mid_y = (view.a.y + view.b.y) / 2;
+        [
+            View {
+                a: view.a,
+                b: P2 {
+                    x: view.b.x,
+                    y: mid_y,
+                },
+            },
+            View {
+                a: P2 {
+                    x: view.a.x,
+                    y: mid_y,
+                },
+                b: view.b,
+            },
+        ]
+    }
+}