View Full Version : Envelopes

08-16-2012, 04:14 PM
I'm trying to build a bar chart and have the color of the bar change from blue to red as it moves. I believe envelopes is how this is done but am confused on how envelopes work.

Is there a tut anywhere that explains this?

Thank you

08-16-2012, 04:41 PM
If you click on the Envelope for color you can color pick what value your keyframe is. That's the only big difference between a color envelope and any other channel (motion, opacity, etc).

08-16-2012, 04:48 PM
Clcik on the E there's your envelope (shift click to kill it). Basically u just take a value or values, set keys at desired times, at desired values. In the case of a colour, ul have 3 channels for r,g,b... select and key each separately is easiest (at least to begin with).

Another quick easy way for u to do this... Add a null to the scene, pop open surface node for the bar, add an item info node, double click it and select the null as the item. Plug position from info to colour on surface... Now when you move the null to x1,y0,z0 ull get pure red... x0,y0,z1 pure blue, etc.

08-16-2012, 05:02 PM
Thank You!

08-17-2012, 12:17 AM
Try this tutorial; it taught me a lot about how to use expressions to create dynamic charts:

http://cg.tutsplus.com/tutorials/newtek-lightwave/newtek_lightwave_adobe_after_effects_lightwave10_s cripting_modelling_tutorial_2/

08-17-2012, 01:06 PM

08-17-2012, 02:33 PM
LWGRAPHER http://alfuzai-studios.com/index02.html