Selection coordinates

Question

Hi. I need to have the coordinates of a selection area (not rectangular one). I've searched the net and only found this script:
                                doc.Selection.MakeWorkPath(1);// make the path 
                                PathItem p = doc.PathItems["Work Path"];
                                for (int u = 1; u <= p.SubPathItems.Count; u++)
                                    for (int t = 1; t <= p.SubPathItems[u].PathPoints.Count; t++)
                                        PathPoint w = p.SubPathItems[u].PathPoints[t];
                                        object[] my = ((object[])w.Anchor);
                                         int myx = Convert.ToInt32(my[0]);
                                        int myy = Convert.ToInt32(my[1]);
but it's not working as I have no experience with PS scripts. I've saved it as .jsx and tried to load it but it throws errors like it can't set a variable  of the "PathItem" type and such. The script is obviously not completed, after it executes i need a way to obtain the outputted coordinates (text file, area, output window..)
Can anyone help me out ?
Thanks beforehand

Answer 1

#target Photoshop
var data=mapa_seleccion(activeDocument,data)
function mapa_seleccion(doc,out){
     var hs = doc.historyStates;
     preferences.rulerUnits = Units.PIXELS;
     doc.selection.makeWorkPath(1);
     var p = doc.pathItems["Work Path"];
     var a = new Array();
     var t = 0;
     var l = p.subPathItems.length;
     for ( k = 0; k < l; k++) {
          var n = p.subPathItems[k].pathPoints.length;
          a[k] = new Array (n);
          for ( i = 0; i < n; i++){
               a[k][i] = new Array();
               a[k][i]=p.subPathItems[k].pathPoints[i].anchor;
     var t = 0;
     for ( k = 0; k < l; k++) {
          var n = a[k].length;
          var s = 0;
          for ( i = 0; i < n; i++){
               var j = (i+1)%n;
               s+=(a[k][i][0]*a[k][j][1]);
               s-=(a[k][i][1]*a[k][j][0]);
          s/=2;
          t+=s;
     doc.activeHistoryState = hs[hs.length-2];
     out=new Array()
     out.mapa=a
     out.area=parseFloat(t/doc.resolution/doc.resolution*2.54*2.54).toFixed(2)//convierte a cm2
     return out
//You can get the area of the selection with:
alert(data.area)
//The "selection" is an array, so you can get it like:
data.mapa[0] // for the first subpathitem
data.mapa[0][0] // for the first pathpoint in the first subpathitem, etc.