T_HeatDistortion v2.0

This is a more comprehensive heat distortion for nuke. It uses two noises to mimic more accurately real heat distortion. Both noises also have the ability to distort the image in all axis’ unlike the typical unidirectional distortion. This gives it a smoother and more realistic look. All controls are available for each noise and more, such as blur behind noise and brightness, giving the ability for quick and realistic creation of heat distortion.