[Dan Ebberts]

Try this position expression:

upperRight = [thisComp.width, 0 ,0];
lowerLeft = [0, thisComp.height, 0];
v = lowerLeft – (value – upperRight);
[v[0], v[1], value[2]]

Dan

[Dan Ebberts]

This should work:

v = effect(“Particle Playground”)(“Position”).velocity;
a = radiansToDegrees(Math.atan2(v[1],v[0]));

Dan

[Dan Ebberts]

This should work:

v = effect(“Particle Playground”)(“Position”).velocity;
a = radiansToDegrees(Math.atan2(v[1],v[0]));

Dan

[Dan Ebberts]

As far as I know, there’s no way for an expression to access the parent comp of the comp it resides in, except directly by name.

Dan

[Dan Ebberts]

As far as I know, there’s no way for an expression to access the parent comp of the comp it resides in, except directly by name.

Dan

[Dan Ebberts]

Mike, this should fix it. Just set “layersToSkip” the number of layers not participating in the chain and make sure those layers are at the bottom of the layer stack.

layersToSkip = 2;

if (thisComp.numLayers > 1 + layersToSkip){
P1 = thisComp.layer(1).position;
P2 = thisComp.layer(thisComp.numLayers – layersToSkip).position;
P1 + (P2 – P1) * (index – 1) / (thisComp.numLayers – 1 – layersToSkip)
}else{
value
}

Dan

[Dan Ebberts]

Mike, this should fix it. Just set “layersToSkip” the number of layers not participating in the chain and make sure those layers are at the bottom of the layer stack.

layersToSkip = 2;

if (thisComp.numLayers > 1 + layersToSkip){
P1 = thisComp.layer(1).position;
P2 = thisComp.layer(thisComp.numLayers – layersToSkip).position;
P1 + (P2 – P1) * (index – 1) / (thisComp.numLayers – 1 – layersToSkip)
}else{
value
}

Dan

[Dan Ebberts]

If you have a bunch of layers, you could apply this expression to all the layers, then just drag the first one or last one around and the others should spread out in between:

if (thisComp.numLayers > 1){
P1 = thisComp.layer(1).position;
P2 = thisComp.layer(thisComp.numLayers).position;
P1 + (P2 – P1) * (index – 1) / (thisComp.numLayers – 1)
}else{
value
}

Dan

[Dan Ebberts]

If you have a bunch of layers, you could apply this expression to all the layers, then just drag the first one or last one around and the others should spread out in between:

if (thisComp.numLayers > 1){
P1 = thisComp.layer(1).position;
P2 = thisComp.layer(thisComp.numLayers).position;
P1 + (P2 – P1) * (index – 1) / (thisComp.numLayers – 1)
}else{
value
}

Dan

[Dan Ebberts]

If “Layer A” and “Layer D” are the end points, one in-between layer could have a Position expression like this:

A = thisComp.layer(“Layer A”).position;
D = thisComp.layer(“Layer D”).position;
A + (D – A)/3;

And the other one like this:

A = thisComp.layer(“Layer A”).position;
D = thisComp.layer(“Layer D”).position;
A + (D – A)*2/3;

There are ways to automate it based on layer index if you have a bunch of layers, but this should get you started.

Dan