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ZeroDivisionError handling in ConvertFlashRotation

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This commit is contained in:
Star Brilliant 2014-06-10 19:46:48 +08:00
parent 7b185020c7
commit 2fe749bb23
1 changed files with 7 additions and 3 deletions
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10
danmaku2ass.py
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@ -532,10 +532,14 @@ def ConvertFlashRotation(rotY, rotZ, X, Y, width, height):
trY = Y*math.cos(rotZ)-X*math.sin(rotZ)+math.sin(rotZ)*width/2+(1-math.cos(rotZ))*height/2
trZ = (trX-width/2)*math.sin(rotY)
FOV = width*math.tan(2*math.pi/9.0)/2
scaleXY = FOV/(FOV+trZ)
if scaleXY < 0:
try
scaleXY = FOV/(FOV+trZ)
except ZeroDivisionError:
logging.error('Rotation makes object behind the camera: trZ == %.0f' % trZ);
scaleXY = 1
logging.error('Clipped rotation: trZ == %.0f < %.0f' % (trZ, FOV));
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
return (round(trX), round(trY), WrapAngle(round(outX)), WrapAngle(round(outY)), WrapAngle(round(outZ)), round(scaleXY*100), round(scaleXY*100))