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View Full Version : Shatter Dynamics help needed

greekdish
10-03-2002, 09:05 PM
Hi there....Im trying to use the Shatter effect to make some dynamic animations. What I have is basic so I can learn to use dynamics better, so maybe someone can help me out here. Pretty much, I have a sphere floating above a plane that is to fall down to the plane and shatter. What I want to do is add the Shatter effect so it can break up my sphere. After I get the shatter effect...how can I make it so the parts stay together when its floating in air (start of animation), and only break apart AFTER it falls down and collides with the plane. What happens right now are the pieces start breaking apart as soon as the animation starts. I want them to stay together and "shatter" when it hits the plane....sort of like dropping a glass on the floor and it breaks.

Thanks in advance
Nick
greekdish
10-03-2002, 09:08 PM
ok, thinking about it now....an even better question would be how to make that animation...a glass falling down and breaking. Thinking about it, if I apply the Shatter effect beforehand...it will render with cracks before hitting the floor....so thats not viable. How does someone simulate a glass falling down on the floor and shattering??? I can easily make a dynamics animation with a glass falling and colliding with the ground plane, but how do you get the glass to shatter?
stunndman
10-03-2002, 09:32 PM
Originally posted by greekdish
ok, thinking about it now....an even better question would be how to make that animation...a glass falling down and breaking. Thinking about it, if I apply the Shatter effect beforehand...it will render with cracks before hitting the floor....so thats not viable. How does someone simulate a glass falling down on the floor and shattering??? I can easily make a dynamics animation with a glass falling and colliding with the ground plane, but how do you get the glass to shatter?

1) use two spheres

sphere A - the solid one for the fall
sphere B - the shattered one for the collission

2) animate their visibility
wedge
10-03-2002, 09:37 PM
or animate frames 1-30 (for example) with a solid, then seperately render frames 30-60 with the shatter hitting. then comp it together and blend both of the Frame 30 shots. (you dont have to do that last part, but i think it might make the transition better.)
greekdish
10-04-2002, 07:26 PM
Thanks...I iwll try out both methods....I wish there was just a way to say execute Shatter effect at collision. :shrug:
stunndman
10-05-2002, 10:05 PM
Originally posted by greekdish
Thanks...I iwll try out both methods....I wish there was just a way to say execute Shatter effect at collision. :shrug:

well, shatter does need quite some CPU power - and you might have to give it several tries and some iterations to get the results you really are looking for (in my experience shatter ain't the most reliable feature of maya)

you are better off with a manual setup of the different "states" of your object and just replacing them in time in your animation (by hiding the solid one and revealing the shattered object) - or blend them in post

good luck
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