MAYA/VRAY/PYTHON _ fallof - occlusion shader

create a fallof and occlusion shader for Vray using python

#____________ FALLOF ____________#
def shFallof():
 # gamma node 
 cmds.shadingNode('gammaCorrect',asUtility=True, n='GammaTemp')
 cmds.setAttr('GammaTemp.gammaX', 0.455)
 cmds.setAttr('GammaTemp.gammaY', 0.455)
 cmds.setAttr('GammaTemp.gammaZ', 0.455)

 #Creates Ramp
 cmds.shadingNode('ramp', asTexture=True, n='facingRampTemp')
 # Remove middle color of ramp
 cmds.removeMultiInstance( 'facingRampTemp.colorEntryList[1]', b=True )
 #Modify Ramp
 cmds.setAttr('facingRampTemp.colorEntryList[2].color', 0,0,0, type='double3' )
 cmds.setAttr('facingRampTemp.colorEntryList[0].color', 1,1,1, type='double3' )
 cmds.setAttr('facingRampTemp.colorEntryList[2].position', 1)
 cmds.setAttr('facingRampTemp.interpolation', 1)

 #Creates Sampler Info node
 cmds.shadingNode('samplerInfo', asUtility=True, n='facingSamplerTemp')

 #Connects Ramp and Sampler
 cmds.connectAttr('facingSamplerTemp.facingRatio', 'facingRampTemp.vCoord', f=True)
 cmds.connectAttr('facingRampTemp.outColor', 'GammaTemp.value', f=True)

 # connect it to a surface shader
 cmds.shadingNode('surfaceShader', asShader=True, n='SH_TMP_Fallof')
 cmds.connectAttr('GammaTemp.outValue', 'SH_TMP_Fallof.outColor', f=True)

 # Select Ramp
 cmds.select('facingRampTemp', r=True)

 #Renames nodes so you can use the script as many times as you want
 cmds.rename('facingRampTemp', 'facingRamp_F')
 cmds.rename('facingSamplerTemp', 'facingSampler_F')
 cmds.rename('SH_TMP_Fallof', 'SH_Fallof')
 cmds.rename('GammaTemp', 'gammaCorrect_F') 

shFallof()


#____________ OCCLU ____________#
def shOcclu():
 # surface shader
 cmds.shadingNode('surfaceShader', asShader=True, n='SH_TMP_Occlu')
 cmds.shadingNode('VRayDirt', asShader=True, n='VrayDirt_TMP')
 cmds.connectAttr('VrayDirt_TMP.outColor', 'SH_TMP_Occlu.outColor', f=True)

 #Renames nodes so you can use the script as many times as you want
 cmds.rename('SH_TMP_Occlu', 'SH_Occlu')
 cmds.rename('VrayDirt_TMP', 'VrayDirt_O')

shOcclu()