From d205ae206fc8acac8cfc2b3e43e257895f1e86df Mon Sep 17 00:00:00 2001
From: Surma <surma@surma.link>
Date: Fri, 15 Feb 2019 19:47:16 +0100
Subject: [PATCH] Implement 180 and 270

---
 codecs/rotate/rotate.rs   |  23 +++++++++++++++++++++--
 codecs/rotate/rotate.wasm | Bin 738 -> 1312 bytes
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/codecs/rotate/rotate.rs b/codecs/rotate/rotate.rs
index 73317eea..5db4d10b 100644
--- a/codecs/rotate/rotate.rs
+++ b/codecs/rotate/rotate.rs
@@ -56,8 +56,27 @@ fn rotate(width: usize, height: usize, rotate: usize) {
                 }
             }
         }
-        180 => std::process::abort(),
-        270 => std::process::abort(),
+        180 => {
+            for i in 0..num_pixels {
+                *out_b.get_mut(num_pixels - 1 - i).unwrap_hard() = *in_b.get(i).unwrap_hard();
+            }
+        }
+        270 => {
+            let new_width = height;
+            let new_height = width;
+            for y_start in (0..height).step_by(TILE_SIZE) {
+                for x_start in (0..width).step_by(TILE_SIZE) {
+                    for y in y_start..(y_start + TILE_SIZE).min(height) {
+                        for x in x_start..(x_start + TILE_SIZE).min(width) {
+                            let new_x = y;
+                            let new_y = new_height - 1 - x;
+                            *out_b.get_mut(new_y * new_width + new_x).unwrap_hard() =
+                                *in_b.get(y * width + x).unwrap_hard();
+                        }
+                    }
+                }
+            }
+        }
         _ => std::process::abort(),
     }
 }
diff --git a/codecs/rotate/rotate.wasm b/codecs/rotate/rotate.wasm
index 9977d58f8286fad73675f7ac6afcdc1647331ae4..6774a3b45b4f5fd9de50f316ff7052178809a570 100755
GIT binary patch
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