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EDIT: Somehow this post ended up on the wrong thread. Here's the thread if you are interested.
This is a lot easier than you think. A 3D layer's rotation has four properties, Orientation (X, Y, and Z) and Rotation X, Y, and Z.
If you create the Hexagon with a flat side on the bottom, put the anchor point on the bottom, then change the orientation to 0, 0, 30 or 0, 0, 330 the bottom will now be parallel to one of the sides of the master hexagon and you can simply drag the Z rotation value in the timeline to rotate around the proper axis. Do the math and you can line up any polygon with any other polygon, you just have to match the Z value in orientation with the edge you want to match.
Fortunately, it is very easy to create a hexagon on a shape layer. Once it is created you can expand the properties, set Transform/Polystar 1/Rotation to 30º, select the Anchor Point tool (y), turn on snapping, move the anchor point to the bottom center of the Hexagon and it will snap there, then you can change to the Selection tool (v) and drag the Hexagon to the edge of the second polygon and it will snap to the edge and the center. Then all you have to do is set the orientation to 0, 0, 330 to line up the bottom edge of the Hexagon with the other Hexagon. All that is left is to drag the X rotation value to rotate the shape around the bottom edge. It looks like this:
It's just math. I use math all the time to line up and arrange things in 3D space. AE's ability to snap to vector paths and layer edges makes it easy.
Andrew,
So on Legacy Expression mode it works fine, but with the Javascript Expression engine it errors out on the opacity expression. Make sure you're declaring variables before using them, (I moved your function effectPush() before you use it)
// Object Position
var O = thisLayer;
var oP = O.toWorld(O.anchorPoint);
// Centre Null
var A = thisComp.layer("Centre Null");
var aP = A.toWorld(A.anchorPoint);
// Distance from Centre Null to Object
var L = length(aP, oP);
// Circle Size
var D = thisComp.layer("Guide").content("Ellipse Path 1").size[0] / 2;
// Hold Percentage
var H = D / 2;
function effectPush(originalValue, reactValue) {
var outputValue = originalValue + reactValue;
var finalValue = linear(L, D, H, outputValue, originalValue);
return finalValue;
}
result = effectPush(value, thisComp.layer("Centre Null").effect("Effect")(3));Do the same thing with your scale expression:
// Object Position
var O = thisLayer;
var oP = O.toWorld(O.anchorPoint);
// Centre Null
var A = thisComp.layer("Centre Null");
var aP = A.toWorld(A.anchorPoint);
// Distance from Centre Null to Object
var L = length(aP, oP);
// Circle Size
var D = thisComp.layer("Guide").content("Ellipse Path 1").size[0] / 2;
// Hold Percentage
var H = D / 2;
function effectPush(originalValue, reactValue) {
var outputValue = originalValue + reactValue;
var finalValue = linear(L, D, H, outputValue, originalValue);
return finalValue;
}
result = effectPush(
value[0],
thisComp.layer("Centre Null").effect("Effect")(2)
);
[result, result, result];Now opacity and scale seem to work as they should and toggling on and off the expressions works as they should.
only issue I cant solve is a missing effect ("React")
I'm guessing you still need to add that.
Cheers,
Justin
I spend some time with the project now, and I think I got it:
As Justin said, switching to JS engine throws errors and I declared the functions before calling them. But this wasn't the issue, or just a part of it.
I got rid of all var, changed function names to individual names, got rid of the pseudoeffect in the null, hardcoded the values, changed variable names to individual names, and even get rid of the linear and the functions itself... but nothing of this helped.
However, I noticed that purging the cache restored the expected visual outcome without any scale jump.
Clearly you created a backloop somehow.
So I added sliders and 3D point controls to the shape layer and outsourced your repeating calculations from the expressions to them. I only did this for opacity and it already works.
When doing so, I got an error on every "var", so I got rid of them again.
I hope this helps, report back if not.
*Martin
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