add starting point to this expression

[Giordz666]

Hello,

how can I add a specific starting point to this expression? I don't want it to start at layer, I would like to be able to edit the starting point.

I tried adding if time etc. but the expression doesn't work properly, I mean, it starts at the time I add, but the values are not correct, as if the expression values, which at the beginning of the layer are correct, at the starting point of the expression are not the same.

Thank you

Position:

yVelocity = 200; //pixels per second

oscFreq = 1.5; //oscillations per second

oscDepth = 35; //oscillation depth (pixels)

drift = 25; // drift (wind?) (pixels per second: - = left, + = right)

value + [oscDepth*Math.sin(oscFreq*Math.PI*2*time) + drift *time,

yVelocity*time,0]

[Roland Kahlenberg · Accepted solution]

The following should work if you are moving the layer's in point. If the layer has to start at Time=0, then Split (Edit Menu>Split) the Layer

timeScalar = time-inPoint;

yVelocity = 200; //pixels per second

oscFreq = 1.5; //oscillations per second

oscDepth = 35; //oscillation depth (pixels)

drift = 25; // drift (wind?) (pixels per second: - = left, + = right)

value + [oscDepth*Math.sin(oscFreq*Math.PI*2*timeScalar ) + drift *timeScalar ,

yVelocity*timeScalar ,0]

-----------------

[Giordz666]

thank you, it works perfectly. You're my new idol!

[Roland Kahlenberg]

If your question was answered then please click on the Helpful button.