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Posted 2003-02-23, 05:35 AM
in reply to Randuin's post "Increasing Subpatch Polygons"
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A lot of plugins are macros in various ways, while others really do bring new operation to LW. And no, it takes a bit of scripting skills to get it to work properly. Expressions are another feature which can make animations really cool. You can, for instance, make an expression that changes the color of a ball from red to white as it reaches a certain height on the Y axis. You might ask yourself, how can this be useful?
Well, for instance, assume that you have a ceiling of a room modeled, and you animate a ball that bounces up and down. Each time it collides with the roof (Possibly set by a collision impact in motion designer, OR with an expression that calculates the current Y (height) position of the ball), you can stretch the ball a bit until it goes below a certain Y level again. This way, you won't have to manually stretch the ball each time it hits the roof.
Of course, making an expression like this might sound like a waste of time for just one ball, but what if you had, say, 400 balls bouncing around randomly? Hell, you could even set a collision impact with each other for the fun of it. There you go, a cool animation with little to no keyframes, all with a few expressions!
What other examples can I give you? Well, for instance, assume that you have an airplane that takes off. Once it reaches the speed of 300 km/h, you can set it to start emitting particles for a realistic afterburner effect. Then once the velocity increases beyond, say, 800 km/h, you could simply turn them off and swap to a dim, volumetric light to make the plane look like it really does fly amazingly fast.
"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram
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