Lightning Launcher

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====== About the script ======
  * Purpose : These scripts will give you a beautiful page transition animation and an optional horizontal page loop
  * Author : [[https://plus.google.com/+LukasMorawietz|LM13]]
  * Current Version : 1.0
  * Link: https://plus.google.com/115366157037831519359/posts/eUtogDspL2X

====== Changelog ======
  * Version 1.0 (5/7/2014): initial release in wiki



====== How to use the script ======
  * Set the main script to the positionchanged event of your container; configure the main script, if you want another bounciness
  * enable infinte scrolling if you want a page loop, disable it if you don't want to loop through pages
  * in this container: create a shortcut to the [[script_toggle_animation|Toggle Script]] and set up toggle sripts configuration
  * one click on the shortcut will enable the animation, clicking again will disable the animation. 
  * BE SURE TO DISABLE THE ANIMATION BEFORE YOU EDIT, MOVE OR ADD ITEMS!

//please report all bugs in the g+ community!//

====== Main Script ======
<code>var d=LL.getEvent().getContainer();
var cont= JSON.parse(d.getTag()||"null");
if(cont==null || !cont.setup || d.getPositionScale()!=1)return;
var dwidth=d.getWidth();
var dheight=d.getHeight();
var dposx=d.getPositionX();
var dposy=d.getPositionY();
var current=Math.floor(dposx/dwidth);
var pagepos=current*dwidth;
var percent=(dposx-pagepos)/dwidth;
var items=d.getItems();
var l=items.getLength();
var maxpage=Math.floor((cont.maxx-dwidth)/dwidth);

if((percent>0.005 && percent<99.995) && dposx>cont.minx-dwidth)
{
	var scrollLimit=d.getProperties() .getBoolean("noScrollLimit");
if(dposx>cont.maxx-dwidth&&scrollLimit){
d.setPosition(cont.minx-dwidth,dposy,1,false);
}
if(dposx<cont.minx&&scrollLimit)
cont.state=true;
for(i=0;i<l;i++)
{
item=items.getAt(i);
var pinned=item.getProperties() .getString("i.pinMode");
var data=JSON.parse(item.getTag());
if(pinned=="NONE"|| pinned=="Y")
{
	var page=Math.floor(data.posx/dwidth)
if(page==current||(cont.state && page==maxpage))
{
item.setRotation(90*percent+data.rot);
var c0=center(item,data.rot);
var x=((data.posx+c0[0])%dwidth+ dwidth)%dwidth;
var y=((data.posy+c0[1])%dheight+ dheight)%dheight;
var sqrt=Math.sqrt(Math.pow(x,2) +Math.pow(y,2));
var angle=((x==0&&y==0)?0:Math.acos(x/sqrt))+percent*Math.PI/2;
var c=center(item,item.getRotation());
item.setPosition(dposx+Math.cos(angle)*sqrt-c[0],dposy+Math.sin(angle)*sqrt-c[1]);
}
if(Math.floor(data.posx/dwidth) ==current+1)
{
item.setRotation(90*percent-90+data.rot);
var c0=center(item,data.rot);
var x=((data.posx+c0[0])%dwidth+ dwidth)%dwidth;
var y=((data.posy+c0[1])%dheight+ dheight)%dheight;
var sqrt=Math.sqrt(Math.pow(x,2) +Math.pow(y,2));
iwidth=item.getWidth()*item.getScaleX();
var angle=((x==0&&y==0)?0:Math.acos(x/sqrt))+(percent-1)*Math.PI/2;
var c=center(item,item.getRotation());
item.setPosition(dposx+Math.cos(angle)*sqrt-c[0],dposy+Math.sin(angle)*sqrt-c[1]);
}
}
}
}
else
{
d.setPosition(dposx,dposy);
d.setPosition(dposx<cont.minx?cont.maxx-dwidth:dposx,dposy,1,false);
cont.state=false;
for(i=0;i<l;i++)
{
item=items.getAt(i);
var data=JSON.parse(item.getTag());
item.setRotation(data.rot);
item.setPosition(data.posx,data.posy);
}
}

//r in degree
function center(item,r)
{
r=r*Math.PI/180;
var sin=Math.abs(Math.sin(r));
var cos=Math.abs(Math.cos(r));
var w=item.getWidth()*item.getScaleX();
var h=item.getHeight()*item.getScaleY();
return [(w*cos+h*sin)*0.5,(h*cos+w*sin)*0.5];
}
</code>
Lightning Launcher

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