Ulead COOL 3D User Manual page 80

8 Select Rotate particles to rotate them as
they are emitted.
9 Under Size life, set the dimensions the
particle from Initial to End by using the spin
boxes. You can also control the size
differences between particles from Initial to
End by editing the values in the spin boxes.
10 Life allows you to control the lifetime of the
particle.
11 Select Collision detection and adjust the
behavior of the bouncing particles in the
spin box.
12 Click Play to preview your project. Notice
the varying radiance reflected on the walls,
giving a touch of realism to the intensity of
the fire.
Note: To reverse the particle lifetime from end to initial,
select Reverse.
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Ulead COOL 3D Production Studio