The LSX tutorials thread!

[SaltyRobot]

Excellent Thanks

[laserLips]

Hi guys. Can someone do a mini tutorial on how to apply an effect to multiple targets please?

E.g. I have about 7 things affecting one animation object.
I want to temporarily use all the effects on two animation objects but don't want to duplicate them all and really messing up the layout.

Thanks :-)
Will share show once I've finished.
Graham

[colouredmirrorball]

You can right-click an event and select "Edit properties of this event", where you can select which tracks it needs to affect ("Influence output track"). I heard this feature is somewhat bugged, but I haven't investigated myself as I like to copy paste events under the source events instead of using this trick. Just experiment along and report anything that looks like it's off to drlava.
Copy-pasting isn't that bad... just shift+drag to select the events, hold ctrl and drag the events to the new space. Unless you have severe OCD about how your timeline looks like :P

[swamidog]

even my most cluttered timelines aren't bad...

Unless you have severe OCD about how your timeline looks like :P

[laserLips]

Thanks :-)
I don't mind too much about copy and pasting. It's the select tool that doesn't work too well. The drag and select elements doesn't seem to work.

[swamidog]

if you have problems with the select tool, just zoom in a little.

Thanks :-)
I don't mind too much about copy and pasting. It's the select tool that doesn't work too well. The drag and select elements doesn't seem to work.

[SaltyRobot]

I would like to have the effect of a bouncing ball going across the screen that bounces less and less each time. I know that I can use an expression on the pre-move y to take the absolute value on a sin wave to create the bouncing effect. However I do not know how to add the exponential part of the effect to make it bounce less and less each time. Basically I am trying to figure out the syntax of how to combine a sin wave and exponential function in the same equation.

[colouredmirrorball]

Just multiply them together: exp(-t)*|sin|.

Example expression: exp(-etime*5)*abs(sin(phase*10)*0.5+0.5)

You can alter the decay rate by changing the argument of the exp()-function: the larger, the faster it will decay. Notice that you need to put the rescaling constants of the sine wave inside the abs() function.
Due to the way maths is set up in LSX, the ball will bounce at the "ceiling", so either swap the upper and lower limits, or change te expression to -exp(-etime*5)*abs(sin(phase*10)*0.5+0.5)+1 .

[The_Doctor]

If you know what base those EXP's are in, you could LOG those sines to same, then add instead of multiply, and do EXP after on the result. Fast. At least, it is if you can get all the log(sine)s you want into a lookup table first.

[colouredmirrorball]

The base is just Euler's constant.

I'm not entirely sure what you mean by fast... do you mean the processor calculates your way faster? There's not really a need in lsx to think about optimizing code, at least not with such simple expressions.