问题
i am developing an application where i want to do some smoke effect like animation and interact with that smoke.
Do i need to implement it OpenGLES or any simple solution?
Is there any sample application for it?
回答1:
You could just write a simple particle emitter for that. Is it for a Game ? or for another kind of Application ?
It also depends on the level of realism that you're looking for. A guy got down voted for mentioning fluid dynamics, but if you really want realism, that's the best way to go.
Having said that, you can really get decent smoke using a regular particle emitter (you could even try to code it on Core Animation and not in OpenGL ES).
Also, if you're targeting iOS 5.0+, UIKit now includes several Particle FX that you could use, you just have to play with the parameters... checkout this tutorial
Cheers!
回答2:
Yes, its possible with simple solution. You just need to use UIKit particle system. Have a look that sample https://github.com/lichtschlag/Dazzle, you just need to check fire and smoke sample.
Good luck
回答3:
Hmmm... i have no knowledge about OpenGLES, but there an alternative called iProcessing is designed to create native interactive apps for iOS, actually there no iOS version 5, actually are iOS 4 and iOS 3, maybe we can wait when they release new version of iOS 5.
You need a mac to use Xcode, iProcessing package includes sample projects for Xcode.
http://luckybite.com/iprocessing/
Honestly, i haven't tried it, but you can compare this code of the interactive smoke http://processing.org/learning/topics/smoke.html.
Processing is awesome because you can use same codes for Processing.js and iProcessing, but it depends like importing libraries like OpenGL, etc.
来源：https://stackoverflow.com/questions/2123445/how-to-create-a-smoke-effect-in-iphone