From d0e5fd8b909789b108973b2d92c616a1bd4b23c1 Mon Sep 17 00:00:00 2001
From: Star Brilliant <m13253@hotmail.com>
Date: Wed, 11 Jun 2014 00:01:45 +0800
Subject: [PATCH] Handle the situation that rotation makes object behind the
 camera

---
 danmaku2ass.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/danmaku2ass.py b/danmaku2ass.py
index de38bf2..29448f0 100755
--- a/danmaku2ass.py
+++ b/danmaku2ass.py
@@ -538,11 +538,13 @@ def ConvertFlashRotation(rotY, rotZ, X, Y, width, height):
     except ZeroDivisionError:
         logging.error('Rotation makes object behind the camera: trZ == %.0f' % trZ);
         scaleXY = 1
-    if scaleXY < 0:
-        scaleXY = -scaleXY
-        logging.error('Rotation makes object behind the camera: trZ == %.0f < %.0f' % (trZ, FOV));
     trX = (trX-width/2)*scaleXY+width/2
     trY = (trY-height/2)*scaleXY+height/2
+    if scaleXY < 0:
+        scaleXY = -scaleXY
+        outX += 180
+        outY += 180
+        logging.error('Rotation makes object behind the camera: trZ == %.0f < %.0f' % (trZ, FOV));
     return (trX, trY, WrapAngle(outX), WrapAngle(outY), WrapAngle(outZ), scaleXY*100, scaleXY*100)