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Make it Bounce from MotionScript?
Hi Gang!
So I am confused about the Make it Bounce script from MotionScript. Do I need to create a position keyframe for each place where the ball touches the floor?
Or are there only two position key frames for the start and end of trajectory?
He mentions that “I’ve keyframed the movement of the ball across the bottom of the comp.”
Not sure exactly what he meant.The script:
freq = 1.0; //oscillations per second
amplitude = 90;
decay = .5;posCos = Math.abs(Math.cos(freq*time*2*Math.PI));
y = amplitude*posCos/Math.exp(decay*time);
position - [0,y]thanks!
gabi -
2 Replies
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Wow-that’s an old one. It’s a very simplistic simulation that should only require two keyframes, but it’s not going to be very realistic. This one should give much better results:
https://motionscript.com/articles/bounce-and-overshoot.html#bounce
Dan
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Dan!!
What an honor to actually have the script creator answer you back! Thank you!
Got it. And thanks for the new updated script! Indeed that one looks more realistic.I would dare asking you a question along sides this:
How would you add a dashed line trailing the trajectory of the bouncing ball?
thanks much again!
gabi
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