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  top vapor trails  (Read 814 times)
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Offline aNt

Senior Member




AFK


« Posted 2003-07-28 13:25:36 »

so whats the trick to make real nice vapor trails?
Offline shawnkendall

Senior Member





« Reply #1 - Posted 2003-07-28 14:29:38 »

Similar to tire marks.
As the trail generator moves every couple frames you mark current location as a new point in a line.  A geometry making class turns those line segments into quads or tri-strips based on several parameters such as the ground surface for tire marks or for vapor trails some quick hack and up and down quad and a X-Z plane quad crossing at the actual line location.

The best vapor trails are a continuous strip that is updated every frame to be rendered flat to the view, similar to particle systems.  In fact, a modified particle system is a good place to start.  Sometimes a series of close particles can do the trick nicely as well.

Shawn Kendall
Cosmic Interactive, LLC
http://www.facebook.com/BermudaDash
Offline Mojomonkey

Senior Member




ooh ooh eee eeee


« Reply #2 - Posted 2003-07-28 15:18:52 »

There is also the possibility of using a particle engine for vapor trails. If you mean a vapor trail is something similar to a smoke trail left by a rocket, plane or something.

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Offline jbanes

JGO Coder


Projects: 1


"Java Games? Incredible! Mr. Incredible, that is!"


« Reply #3 - Posted 2003-07-28 16:20:15 »

Use a trick like explosion clouds to create a black and white "cloud", make the image translucent, and plug the result into a particle engine. By making the cloud brighter or darker, you can control whether it looks like smoke or exhaust. For a crashing fireball effect, run an animated explosion effect at the particle source. Good luck! Smiley

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