This is a child page. You can use Parent in the quick nav bar at the top or the bottom of the page to navigate directly back to the parent of this page. Some child pages are more than one level deep, and in that case will require more than one Parent click to reach the outermost document level.

16.94.9 - Smoke Particle System Example

Particle Definition

100 very large particles are set up with a 1.0 time advance so they exists all over the system lifespan. The system starts at the bottom of the image (via the Y displacement of 1.0) and the age wraps so that when particles end, they restart immediately.
Force 1

This provides a constant upwards force with turbulent displacement - smoke doesn't usually rise in a straight column. This force is applied for the entire system lifetime.
Force 2

This force causes the column to expand as it rises, and also to fade from somewhat transparent to quite transparent (.65 to .15) over the lifetime of the system.

The colors here just get slightly lighter as the particles reach the end of the system (the top of the image, in this case.) That simulates how smoke that is more widely dispersed reflects more light.
Keyboard Navigation
, Previous Page . Next Page t TOC i Index o Operators g Glossary
WinImages F/x, Morph and all associated documentation
Copyright © 1992-2007 Black Belt Systems ALL RIGHTS RESERVED Under the Pan-American Conventions
WinImages F/x Manual Version 7, Revision 6, Level A

Valid HTML 4.01 Loose

This manual was generated with wtfm
wtfm uses aa_macro and SqLite
aa_macro uses python 2.7
Page 254