Inside LightWave v9 574
Chapter 14 Dynamics in Motion 575
Set the value to say, 40%, and you??™ll see the ball bounce down the slide. Change
these values to add variations to see how the ball movement changes as it moves
down the slide.
?—? Finally, you can set the Probability, telling LightWave the percentage of probability
that the collision should happen. Right now, it??™s set to 100%, meaning
there??™s a 100% probability of a collision. Lower this value, calculate again, and
see the difference.
Within the HardFX controls, which are located on the Dynamics tab found in the Object
Properties panel, click the Collision tab and then click the Start By Collision drop-down
selector. Choose Collision in the Start By drop-down, and the ball??™s dynamic effects will
remain turned off until the ball collides with another object. Triggering the effect using
this collision-detection method saves processing time. Conversely, you can set a StopBy
collision event in the same way as the Start By. Simply click the Stop by drop-down selector
and choose Stop by Event. The event would be the collision. In the previous exercise,
turning on the Start By Collision option would yield a ball that just sits in the air, that
doesn??™t fall, and that doesn??™t roll.
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