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import sys
import unittest
import os
import IECore
import IECoreImage

class LensDistortOpTest(unittest.TestCase):

	def testDistortOpWithStandardLensModel(self):

		# The lens model and parameters to use.
		o = IECore.CompoundObject()
		o["lensModel"] = IECore.StringData( "StandardRadialLensModel" )
		o["distortion"] = IECore.DoubleData( 0.2 )
		o["anamorphicSqueeze"] = IECore.DoubleData( 1. )
		o["curvatureX"] = IECore.DoubleData( 0.2 )
		o["curvatureY"] = IECore.DoubleData( 0.5 )
		o["quarticDistortion"] = IECore.DoubleData( .1 )

		# The input image to read.
		r = IECore.Reader.create(os.path.join( "test", "IECoreImage", "data", "exr", "uvMapWithDataWindow.100x100.exr" ) )
		img = r.read()

		# Create the Op and set it's parameters.
		op = IECoreImage.LensDistortOp()
		op["input"] = img
		op["mode"] = IECore.LensModel.Undistort
		op['lensModel'].setValue(o)

		# Run the Op.
		out = op()

		r = IECore.Reader.create(os.path.join( "test", "IECoreImage", "data", "exr", "uvMapWithDataWindowDistorted.100x100.exr" ) )
		img2 = r.read()

		self.assertEqual( img.displayWindow, img2.displayWindow )

