AE - PointAt

1) Create 3 nulls: Null_PointAt, Null_Base, Null_Target
2) Set the following transform expressions on Null_PointAt:

Position:
thisComp.layer("Null_Base").transform.position

Scale:
point1 = thisComp.layer("Null_Base").transform.position;
point2 = thisComp.layer("Null_Target").transform.position;
scl=length(point1, point2);
[scl, scl]

Rotation:
fromPoint = thisComp.layer("Null_Base").transform.position;
atPoint = thisComp.layer("Null_Target").transform.position;
Pointer3=lookAt(fromPoint, atPoint);
if(atPoint[1]<fromPoint[1]) [Pointer3[1]]-180; else [-Pointer3[1]];

Adding commas into Text layers

//Create a new Slider Expression effect. I named it 'Score'

var num = effect("Score")("Slider");
num = Comma(num);
[num]

 function Comma(number)
    {
    number = '' + Math.round(number);
    if (number.length > 3)
       {
       var mod = number.length % 3;
       var output = (mod > 0 ? (number.substring(0,mod)) : '');
       for (i=0 ; i < Math.floor(number.length / 3); i++)
           {
           if ((mod == 0) && (i == 0))
                output += number.substring(mod+ 3 * i, mod + 3 * i + 3);
           else
                output+= ',' + number.substring(mod + 3 * i, mod + 3 * i + 3);
           }
       return (output);
       }
    else return number;
    }

Limiting Decimal Places In Text Layers

Adding .toFixed(4) after the variable limits the decimal places to 4.  ie 26.7835
Adding .toFixed(2) would limit the decimal places to 2.  ie 26.78
.toFixed(3) would limit the decimal places to 3.  ie 26.784  (note it rounds value)


ex:  avgEQ = (thisComp.layer("1").transform.scale[1] + thisComp.layer("2").transform.scale[1])/2;
       avgEQ.toFixed(4)

Aligning Lens Flare To Target

In order to align the streak of the lens flare to a target, first create 2 nulls (LightTarget, LightSource)

Light Factory Location =
lSource = thisComp.layer("LightSource").transform.position;
lTarget = thisComp.layer("LightTarget").transform.position;
Anchor = transform.anchorPoint;
lSource-lTarget+Anchor

Light Factory's layer position =
thisComp.layer("LightTarget").transform.position

Make sure the solid layer that the lens flare is applied to is large enough for the comp.

Speed offset expression for AE

Being able to control the speed of another layer based on speed control.

Position =
Start = 0;
y = 540;
x = thisComp.layer("Null 1").transform.position[0];
Speed = effect("Speed")("Slider");
x1 = ((x-Start)*Speed)+Start;
[x1, y]

Nickelodeon: Days Of Future Past

Updated for Unreal Engine 4.  Some of the old, some of the new.  Everything is separated out into different fbx files, so it's easily be improved and updated.  Next thing I want to learn and incorporate is Substance Designer and Substance Painter.  Those will really take it to the next level!

Stabilizing footage after tracked

After you have tracked footage (scale and position), you can stabilize it with the following expression:

Anchor Point: (Paste in the tracked position keyframes)
Position: (Paste in the first tracked position keyframe (Single keyframe))
Scale:

start = 300.1255; //(first scale keyframe of track)
temp = (100*start)/(thisComp.layer("BG_Tracker").transform.scale[0]);
[temp, temp]

Rotation:
StartRot = -7.7137; //(first rotation keyframe of track)
r = thisComp.layer("BG_Tracker").transform.rotation;
StartRot - r;