How to simulate icing on iPhone?

Just like many screen saver apps that simulate water wave, I want to simulate the pr开发者_开发问答ocess of icing, from water to ice, what tech do I need to learn? Is there any example code?

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It's not a trivial problem. This paper might be a good starting point:

Visual Simulation of Ice Crystal Growth
https://docs.google.com/viewer?a=v&q=cache:Yb2KyCqKDB0J:citeseerx.ist.psu.edu/viewdoc/download?doi%3D10.1.1.5.1550%26rep%3Drep1%26type%3Dpdf+&hl=lv&gl=lv&pid=bl&srcid=ADGEESi4BkAj7ppAttOV-BnYLiu8YYO7lRZiq7U_iMHW5T4DG1BNcVdEvGHeSj6CJBEMgdilOuRd3woHbkH4wWUKLfR8_o6sGu3mmGMYtak6qY9LcEcqthZTQnv9W7wz6H_vqQTOVE0X&sig=AHIEtbRBNTYhCw7UxHCcu8SjRAJg93oNzw&pli=1

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I think, you should go for the Open GL, which is the most preferred way of such type of effects, even though it is not that much simple (as it sounds :) )

These might be helpful you :

the-water-effect-explained

Water Effects

how-to-generate-water-in-opengl