裂玻璃效果

[kaa]

我想請問點樣可以做到裂玻璃既效果呀?
我系想整一開始就無野,,但系後尾比野撞裂左...
用一塊透明玻璃整..

[sobig]

cut the pattern by Power Boolean first,
let's say, the glass will be hit in frame 7.
you can switch the normal glass into broken glass in frame 7.
to achieve this, do a key frame in visible item for both normal glass and broken.

for the broken glass motion. you can easily do that by Reactor.
just hit the glass by a rushing ball.
there is a similar tutorial in max reference.