[Dan Ebberts]

You need to use the Layer Space Transforms.

It would look like this:

C = thisComp.layer(“child”);
childPosition = C.toWorld(C.anchorPoint);

There’s also a transform to move the child’s position into comp (view) space that’s the same as above except you use “toComp()”.

Dan

[Dan Ebberts]

Thanks Filip, I couldn’t have explained it better myself. 🙂

Dan

[Dan Ebberts]

Thanks Filip, I couldn’t have explained it better myself. 🙂

Dan

[Dan Ebberts]

This is one way:

[value[0],wiggle(5,30)[1]]

Dan

[Dan Ebberts]

This is one way:

[value[0],wiggle(5,30)[1]]

Dan

[Dan Ebberts]

It sounds like you want something like the old Motion Math spring script. George Polevoy posted an expression a few years ago that works pretty well:

// AE expression by George Polevoy
// http://www.creativecow.net

// attaches an object to a “Controller” object with a “spring”
// You need another “Controller” which will drive animation of this one

// parameters
conserveMotion = 0.95; // valid range: 0.5 to 0.995
springResistance = 10; // positive values
prerollTime = 2; // value in seconds. greater values give more precise result

//
fps = 1.0 / this_comp.frame_duration;
if ( prerollTime > time ) prerollTime = time;
dt = this_comp.frame_duration;
frame = time * fps;
integrationTime = time – prerollTime;

s = [0,0];
p = this_comp.layer(“Controller”).position.value_at_time( integrationTime );

i = frame – prerollTime * fps;
for (; i < frame; i++, integrationTime += dt ) { c = this_comp.layer("Controller").position.value_at_time( integrationTime ); d = c - p; s = s + d * springResistance; s = s * conserveMotion; p = p + s * dt; } Dan

Activity

[Dan Ebberts]

It sounds like you want something like the old Motion Math spring script. George Polevoy posted an expression a few years ago that works pretty well:

// AE expression by George Polevoy
// http://www.creativecow.net

// attaches an object to a “Controller” object with a “spring”
// You need another “Controller” which will drive animation of this one

// parameters
conserveMotion = 0.95; // valid range: 0.5 to 0.995
springResistance = 10; // positive values
prerollTime = 2; // value in seconds. greater values give more precise result

//
fps = 1.0 / this_comp.frame_duration;
if ( prerollTime > time ) prerollTime = time;
dt = this_comp.frame_duration;
frame = time * fps;
integrationTime = time – prerollTime;

s = [0,0];
p = this_comp.layer(“Controller”).position.value_at_time( integrationTime );

i = frame – prerollTime * fps;
for (; i < frame; i++, integrationTime += dt ) { c = this_comp.layer("Controller").position.value_at_time( integrationTime ); d = c - p; s = s + d * springResistance; s = s * conserveMotion; p = p + s * dt; } Dan

Activity

[Dan Ebberts]

You have to pick whip it to the Null’s Position property. Is that what you’re doing? If so, what’s the error message you get? It works fine for me.

Dan

[Dan Ebberts]

You have to pick whip it to the Null’s Position property. Is that what you’re doing? If so, what’s the error message you get? It works fine for me.

Dan

[Dan Ebberts]

If I remember correctly, you just need to add a new keyframe one frame before the second keyframe that AE creates when you turn on time remapping. Then change the value of the last keyframe to 0. Something like that.

Dan