InPoint OutPoint based expression

[Dan Ebberts]

That’s a little vague, but maybe this example will help. This is an auto fade-in/fade-out based on in and out points:

fadeDur = .5;
if (time < (inPoint+outPoint)/2)
ease(time,inPoint,inPoint+fadeDur,0,100)
else
ease(time,outPoint-fadeDur,outPoint,100,0)

Dan

[Federico Ponce]

Thanks for replying!

What I need is very simple but I can’t seem to figure it out. Basically I want a layer to translate on X in lets say 20 units (ease in) and then translate out (ease out) -20 units. But I want that translate operation to be controlled by the length of the layer so no matter how long the layer is it will always translate the 20 units. Basically I want to learn how to make the in and out points drive Position/Rotation

Thank you!

[Dan Ebberts]

You could modify the fade in/out expression to something like this for position:

moveDur = .5;
moveDist = [20,0];
if (time < (inPoint+outPoint)/2)
ease(time,inPoint,inPoint+moveDur,value,value+moveDist)
else
ease(time,outPoint-moveDur,outPoint,value+moveDist,value)

Dan

[Federico Ponce]

This is what I came up with:

// Fire and Ice present: Accutimer Xposition automator v01

xStart = -44.7;
xLand = 324.2;
xEnd = -44.7;

t = .2 //Amount of time for animation
landIn = inPoint+t;
landOut = outPoint-t;

x = easeOut(time, inPoint, landIn, xStart, xLand);
if (time >= landOut){
x = easeIn(time, landOut, outPoint, xLand, xEnd);
}

[x];

[Federico Ponce]

Thanks for replying!

In the expression below, how do I stipulate t with specific number of frames rather than the .2 value

xStart = -44.7;
xLand = 324.2;
xEnd = -44.7;

t = .2 //Amount of time for animation
landIn = inPoint+t;
landOut = outPoint-t;

x = easeOut(time, inPoint, landIn, xStart, xLand);
if (time >= landOut){
x = easeIn(time, landOut, outPoint, xLand, xEnd);
}

[x];

[Dan Ebberts]

something like this:

f = 6; // number of frames
t = framesToTime(f);

Dan

[Federico Ponce]

that’s perfect, thank you!

Here is the final code:

// Fire and Ice present: Accutimer Xposition automator v01

yStart = 940;
yLand = 864;
yEnd = 940;

f = 6; // number of frames
t = framesToTime(f);

landIn = inPoint+t;
landOut = outPoint-t;

y = easeOut(time, inPoint, landIn, yStart, yLand);
if (time >= landOut){
y = easeIn(time, landOut, outPoint, yLand, yEnd);
}

[y];

[Dmitry Gavriliuk]

Hello Dan.
This is what I’m looking for!
But how can I do a position movement more smoothly? Now it’s not so EasyIn and EasyOut. Need more influence.
Thanks.

xStart = 3200;
xLand = 960;
xEnd = - 1400;

f = 10;
t = framesToTime(f);
landIn = inPoint+t;
landOut = outPoint-t;

x = easeOut(time, inPoint, landIn, xStart, xLand);
if (time >= landOut){
x = easeIn(time, landOut, outPoint, xLand, xEnd);
}
y = value[1];

[x, y];

[Torben Christensen]

[Dan Ebberts] “You could modify the fade in/out expression to something like this for position:

moveDur = .5;
moveDist = [20,0];
if (time < (inPoint+outPoint)/2)
ease(time,inPoint,inPoint+moveDur,value,value+moveDist)
else
ease(time,outPoint-moveDur,outPoint,value+moveDist,value)

Dan”

What if I want to control which axis it moves on? In my case, I want it to move on Y-axis instead of X-axis. Thanks.