Quote:
Originally Posted by freebeard
This is the part I don't get. I guess I meant how is the green curve generated. It seems extremely useful compared to a single, raw value for the whole shape. What is the 'it' doing the scanning?
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"It" utilizes waves of streaming particles, like particle curtains or particle walls, passing over the body. Here's as much as I can show:
![](http://i143.photobucket.com/albums/r139/Shepherd777/Partical%20Wall_zpsguzovudu.png)
Above, the particle wave curtains are passing over the center of the trailer.
You'll have to use your imagination on how it looks passing over the tractor and boat-tail.
Here are the particles at the vehicle wake:
![](http://i143.photobucket.com/albums/r139/Shepherd777/Wake_zps3jz07ggb.png)