thatsmadden

// This is a messy way to calculate a minimum enclosing shape given a set of 2D points. Just replace the "points[0]=.... ;" section with your own selection of points.

// The expression uses a Graham scan to find the points on the outer edge of the shape-- utilizing a cross product to find the point with the greatest "left-turn" for the next vertex on the hull.

// It's meant to go on a path shape-- either a mask path or a Shape Layer path.

function indexOfMin(arr) { // find index of point that has the lowest x-position.
    if (arr.length === 0) {
        return -1;
    }

thatsmadden

s=effect("size")("Slider");
d=degreesToRadians(effect("driver")("Angle"));
h=Math.sin(d);
v=-Math.cos(d);
([h,v]*s)+value

thatsmadden

a=thisComp.layer("NullA").toWorld([0,0,0]);
b=thisComp.layer("NullB").toWorld([0,0,0]);
wh=thisLayer.effect("weight")("Slider");
aW=a*wh;
bW=b*(1-wh);
aW+bW