Here are a few tips to quickly making a stream of flowing lava. I hope somebody out there can use it.
(这是一个关于如何快速构建一个缓慢流动的岩浆的小技巧。我希望有人能用得上它。）
Start by making a box like this. You will need to make it large enough to contain all the lava for the entire animation.
（让我们以下面这个方盒子开始。你需要让它足够的大以容纳整个岩浆的动画。）
Add a turbosmooth and some noise, for geometrical variation:
（添加一个涡轮光滑，和一些噪波以便产生模型上的变化。）
Create an FFD box (as a separate object, NOT as a modifier!) around part of the lava, like this, and bind the lava to the FFD with a space-warp bind
Bend the lava into shape by moving the FFD box control points:
(通过移动FFD变形盒的控制点，构建岩浆的形态。）
Go to the final frame in the timeline, turn on ANIMATE, and move the lava through the FFD box
(到时间线的最后一帧，打开自动关键帧，然后移动岩浆模型通过FFD变形盒。）
Voila, you're done! Play back the animation, and the lava is flowing.
（瞧，你已经做出了了不是！播放动画，岩浆在流动。）
Here is an animation of the lava.
（以下是岩浆的动画下载地址。） http://www.duck.dk/cgi/jussing_lava_animation_web.mov
Note that you will need to change the key-frame types to linear, if you want the lava's speed to be constant.
（注意，你需要改变关键帧类型为直线，如果你希望岩浆的速度保持恒定的话。）
Also, as it appears in the picture above, as soon as the lava exits the FFD box, it will pop back to its unmodified position. You will need to take this into account.
（另外，正如它像上图一样，一旦岩浆模型离开FFD变形盒的空间，它将返回未修改时的位置。你需要将此考虑在内。）
Cheers
- Jonas
来源：译文3D网
