Trying to Compare Geometric Bounds if Many items are Selected instead of two items

[M.Hasanin]

Hi Experts,

I was comparing the geometric bounds for just two selected items, so the following simple script will just test if the two selected items are different is size or not so it will (de-Select) one of them, can this script updated to select any items to comapre them and de-select all the items that are matching in geometric size instead of only two items?, here is the starting script :

//Test Two Selected items Gemoetry Size
var item1 = app.selection[0];
var item2 = app.selection[1];

//for Item 1
var myWidth1 =  Math.round(item1.geometricBounds[3]-item1.geometricBounds[1]);
var myHeight1 = Math.round(item1.geometricBounds[2]-item1.geometricBounds[0]);

//for Item 2
var myWidth2 =  Math.round(item2.geometricBounds[3]-item2.geometricBounds[1]);
var myHeight2 = Math.round(item2.geometricBounds[2]-item2.geometricBounds[0]);

try{
              if((myWidth1 == myWidth2) && (myHeight1 == myHeight2)){              
                    alert("Only One Same Size Item to Be Selected!, Please Always Select Different Size Items!", "Info!");
                    app.selection[0].select(SelectionOptions.REMOVE_FROM);
               }else{
                    alert("Your Selected items is Different Size Items!", "Info!");
		}
	}catch(e){
}

 I know i can collect all selected items but i dont know if i can compare them at once!, actually im not sure if this is possible with javascript?,  in this exmaple i collect all widths and heigt but i cant figure how to comapre them and deselect all the matches!, im stucked here and thanks in advance for any help or advice

for (var i = 0; i < app.selection.length; i++) {
        var mySelection =  app.activeDocument.selection[i].geometricBounds;
        var myWidth = Math.round(mySelection[3]-mySelection[1]);
        var myHeight = Math.round(mySelection[2]-mySelection[0]);
}

[Robert Tkaczyk]

First of all - which object in the selection will be the "source" for the size?

Then, you just need to loop through the rest of the selected objects and compare them to the "source".

[M.Hasanin]

@Robert Tkaczyk Thanks for your reply,  actually no matter which object is the source, just the one or two or more or whatever number of items, if one or more match any size of the others items it will be de-selected automatically!, so the only selection will remain in different size (geometries) object will still selected

[Robert Tkaczyk]

So you are looking for "singles"?

Then you need two loops - one inside the other - and when outer one is iteratig through all of them ONCE - the inside loop should check all remaining again and again - starting from the next object after the one from the outside loop - simplest approach.

Another way - get sizes of all objects into an array and sort and then compare results - fastest option. 

[M.Hasanin]

@Robert Tkaczyk Thanks a lot for your guide, i will do my best, thanks again, have a great day