#1
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Updating a Postprocessing effect
I'd like to be able to modify and update a postprocessing effect in a loop for a particular effect. Specifically, I'm wanting to modify BulgeAmount such that it loops and interpolates between -0.5 and 0.5:
Code:
effect = BulgeEffect(BulgeAmount) vizfx.postprocess.addEffect(effect) I tried using the director function to create a new thread and have it loop separately from the main thread but it crashed. This is the code I tried: Code:
import viz import viztask import vizfx.postprocess from vizfx.postprocess.distort import PincushionEffect def UpdateDrunkEffect(): DrunkValue = 0 Modulate = True Length = 60 while True: if DrunkValue <= 0: Modulate = True if DrunkValue >= 1: Modulate = False Length -= 1 if Modulate: DrunkValue += .01 else: DrunkValue -= .01 effect = PincushionEffect(DrunkValue) vizfx.postprocess.addEffect(effect) if Length == 0: effect = PincushionEffect(0) vizfx.postprocess.addEffect(effect) break viz.director( UpdateDrunkEffect ) |
#2
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Here's an example that uses the viztask.waitCall command to call effect.setBulge and waits until the vizact.mix parameters are complete.
Code:
import viz import vizact import viztask viz.go() viz.addChild('gallery.osgb') import vizfx.postprocess from vizfx.postprocess.distort import BulgeEffect effect = BulgeEffect(0,radius=1) vizfx.postprocess.addEffect(effect) def BulgeTask(): increase = vizact.mix(-0.5,0.5,time=2) decrease = vizact.mix(0.5,-0.5,time=2) while True: yield viztask.waitCall(effect.setBulge,increase) yield viztask.waitCall(effect.setBulge,decrease) viztask.schedule( BulgeTask() ) |
#3
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Thank you Jeff! This is exactly what I was trying to do. You make my life easy.
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