Maya makes Tornado effect

Previously on the Internet to see a tutorial on the production of tornadoes, is using Mel to control the particle's motion path to achieve the appearance of the tornado. Now this tutorial is going to use another method to achieve this effect. By building a tornado model, making deformations, adding particles to complete, now let's start.

1, the first to make a tornado model, is a radius from small to large spiral, I used the Createtube this Mel, you can use their familiar method to create. This Mel can be downloaded from the http://dirk-bialluch.mayaring.com.

2, the Tornado model of the rotation of the Y-channel to do an expression: xuanfeng.rotatey=time*-7200; here time refers to 1 seconds, *=-7200, now the tornado will rotate every second in situ rotation 20 laps (7200).