Method testDeprecatedSplines

test/IECoreScene/SceneCacheTest.py:1204–1277

( self )

			self.assertEqual( c.readAttribute( a, 0 ), objectVector )

	def testDeprecatedSplines( self ) :

		# Test with a file saved from old Gaffer, this hopefully makes sure this is working in practice
		fileName = pathlib.Path( __file__ ).parent / "data" / "oldSplines.scc"
		root = IECoreScene.SceneInterface.create( str( fileName ), IECore.IndexedIO.OpenMode.Read )
		child = root.child( "cube" )

		shaderNetwork = child.readAttribute( "ai:surface", 0 )
		self.assertEqual(
			shaderNetwork.getShader( "ColorSpline" ).parameters["spline"],
			IECore.RampfColor3fData( IECore.RampfColor3f(
				(
					( 0, imath.Color3f( 0, 0, 0 ) ),
					( 0.4, imath.Color3f( 0.3, 0.5, 0.9 ) ),
					( 0.7, imath.Color3f( 0.8, 0.7, 0.3) ),
					( 1, imath.Color3f( 1, 1, 1 ) )
				),
				IECore.RampInterpolation.Linear
			) )
		)

		self.assertEqual(
			shaderNetwork.getShader( "FloatSpline" ).parameters["spline"],
			IECore.RampffData(IECore.Rampff(
				(
					( 0, 0 ),
					( 0.3, 0.8 ),
					( 0.7, 0.7 ),
					( 0.9, 0.1 ),
					( 1, 1 ),
				),
				IECore.RampInterpolation.BSpline
			) )
		)

		# A more synthetic test to exercise the compatibility for all spline types

		for interp in IECore.RampInterpolation.values.keys():
			ramp = IECore.RampfColor3f(
				(
					( 0, imath.Color3f( 0 ) ),
					( 0.3, imath.Color3f( 0.8, 0.5, 0.4 ) ),
					( 0.7, imath.Color3f( 0.7, 0.1, 0.2 ) ),
					( 0.9, imath.Color3f( 0.1, 0.4, 0.6 ) ),
					( 1, imath.Color3f( 1 ) ),
				),
				IECore.RampInterpolation( interp )
			)

			s = IECoreScene.Shader( "standard_surface" )

			# Instead of writing out the Ramp, write out the Ramp's evaluator. This is wrong, but it matches
			# how things used to work, when Spline was the primary representation.
			s.parameters["test"] = IECore.SplinefColor3fData( ramp.evaluator() )
			shaderNetwork = IECoreScene.ShaderNetwork(
				shaders = {
					"shader" : s
				},