From f9a570154e08d65f7c1803104befdcb1b760a35a Mon Sep 17 00:00:00 2001
From: Edgar Simo <bobbens@gmail.com>
Date: Mon, 7 Jul 2008 16:58:16 +0000
Subject: [PATCH] Fixed linux directions being inverted.

---
 include/SDL_haptic.h             | 2 +-
 src/haptic/linux/SDL_syshaptic.c | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/SDL_haptic.h b/include/SDL_haptic.h
index 2baf87ae9..d9fd9b85f 100644
--- a/include/SDL_haptic.h
+++ b/include/SDL_haptic.h
@@ -291,7 +291,7 @@ typedef struct _SDL_Haptic SDL_Haptic;
  *                    ^
  *                    |
  *                    |
- * (1)  East <----[ HAPTIC ]----> West (-1)
+ * (1)  West <----[ HAPTIC ]----> East (-1)
  *                    |
  *                    |
  *                    v
diff --git a/src/haptic/linux/SDL_syshaptic.c b/src/haptic/linux/SDL_syshaptic.c
index b8558baac..75137cf50 100644
--- a/src/haptic/linux/SDL_syshaptic.c
+++ b/src/haptic/linux/SDL_syshaptic.c
@@ -341,7 +341,8 @@ SDL_SYS_ToDirection( SDL_HapticDirection * dir )
 
    switch (dir->type) {
       case SDL_HAPTIC_POLAR:
-         tmp = ((dir->dir[0] % 36000) * 0xFFFF) / 36000;
+         /* Linux directions are inverted. */
+         tmp = (((18000 + dir->dir[0]) % 36000) * 0xFFFF) / 36000;
          return (Uint16) tmp;
          break;
       case SDL_HAPTIC_CARTESIAN: