Arslan-TR

// wiggle expression (usage & combinations) After effects 
// usage:
// wiggle(freq, amp, octaves = 1, amp_mult = .5, t = time)
//example 1 single value example:
      wiggle(0.4,19,3)  

//example for 2 seperate dimension example:
      [wiggle(5,30)[0],wiggle(1,100)[1]]  
      
//example values for natural movement 2 seperate dimension example:

Arslan-TR

//Usage:    
       linear(t, tMin, tMax, value1, value2)



//example 1 #invert value referance to a source:	

       source= thisComp.layer("Layer 1").transform.opacity;   //link a slider/value for source;
       linear(source,0,100,100,0)

Arslan-TR

//this is auto fade expression. with this u just have to cut the layer and its gonna fade-in & Out automaticly

//Autofade (linear) Add the experssion to opacity of the layer

    transition = 8;                   // transition time in frames u can adjust it!
    if (marker.numKeys<2){
    tSecs = transition / ( 1 / thisComp.frameDuration);       // convert to seconds
     linear(time, inPoint, inPoint + tSecs, 0, 100) - linear(time, outPoint - tSecs, outPoint, 0, 100)
    }else{
    linear(time, inPoint, marker.key(1).time, 0, 100) - linear(time, marker.key(2).time, outPoint, 0, 100)

Arslan-TR

// Spin (rotate at a constant speed without keyframes):


        veloc = 360;      //speed (degrees per second) u can adjut the velocity value!
        r = rotation + (time - inPoint) *veloc;
        [r];
 
 
 // Throw (move at a constant speed without keyframes):
 

Arslan-TR

//scale & opacity with 2 in-out position referance point - AE Expression
//add expression to objects scale (2 value):

        [linear(thisComp.layer("Null 3").transform.xPosition    //linear`s source
        , thisComp.layer("Null 1").transform.xPosition          //min Value of referance
        , thisComp.layer("Null 2").transform.xPosition          //max Value of referance
        , 100, 0)                                               //linear's output values
        ,value[1]];                                             //second dimension value

/////////

Arslan-TR

// After effects, Auto show layer name on screen:
//  *set it to source of text layer.
// I bleave that its usefull when u render a test of editing-montage.

        txt = "";
        for (i = index+1; i <= thisComp.numLayers; i++){
        L = thisComp.layer(i);
        if (! (L.hasVideo && L.active && L.opacity > 0)) continue;
        txt = L.name;
        break;

Arslan-TR

//AE, Throw (move at a constant speed) expression script.
//

      veloc = -10;    //horizontal velocity (pixels per second)
      x = position[0] + (time - inPoint) *veloc;
      y = position[1];
      [x,y];

//

Arslan-TR

//AE, Spin (rotate at a constant speed without keyframes) expression script.
//

        veloc = 360;     //rotational velocity (degrees per second)
        r = rotation + (time - inPoint) *veloc;
        [r];

//

Arslan-TR

C = thisComp.activeCamera;
V = C.toWorldVec([0,0,1]);
P = toWorld(anchorPoint);
O = lookAt(P, P + V); 
O[1]-290;

Arslan-TR

#automatic Write Node path Optimized with Pulldown menues and other features that you can use as referance for your need
#put script in to a phytonButton
#basic NUKE v12 & phyton knowledge required!by Arslan-TR (MNS O.)
      #n is = this is your WriteNode 
n = nuke.thisNode()
#n = nuke.selectedNode()  
n['file'].setValue('[lrange [file rootname [value root.name]] 0 end-1] [value Sticky_Settings.pulldown][value Sticky_Settings.string_episode]/[lrange [split [file rootname [filename [topnode]]] "_"] 4 end-2][lrange [split [basename [file rootname [value [topnode].file]]] "_"] 1 end-1][value Sticky_Settings.string_episode].mov')

     #refresh. disable and enable nodes that u want to refresh
n['disable_15_render'].setValue(1)