Changeset 3402 for libpipi/trunk/pipi/filter/blur.cTweet

Timestamp:

Feb 21, 2009, 3:26:51 PM (11 years ago)

Author:

Sam Hocevar

Message:

Fix a very old crash in the box blur filter that occurred when the image
was broader than tall.

File:

• libpipi/trunk/pipi/filter/blur.c (modified) (1 diff)

libpipi/trunk/pipi/filter/blur.c

@@ -282 +282 @@
             u = y - n;
             if(FLAG_WRAP)
-                u2 = (u < 0) ? w - 1 - ((-u - 1) % w) : u % w;
-            else
-                u2 = (u < 0) ? 0 : (u >= w) ? w - 1 : u;
+                u2 = (u < 0) ? h - 1 - ((-u - 1) % h) : u % h;
+            else
+                u2 = (u < 0) ? 0 : (u >= h) ? h - 1 : u;
             v = y + n + 1;
             if(FLAG_WRAP)
-                v2 = (v < 0) ? w - 1 - ((-v - 1) % w) : v % w;
-            else
-                v2 = (v < 0) ? 0 : (v >= w) ? w - 1 : v;
+                v2 = (v < 0) ? h - 1 - ((-v - 1) % h) : v % h;
+            else
+                v2 = (v < 0) ? 0 : (v >= h) ? h - 1 : v;
             if(FLAG_GRAY)
             {