How to use multiple paperscopes on a single canvas in paperjs? -

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i'm trying create multiple canvases each it's own scope. i've hit few problems didn't encounter when working single canvas , scope.

i have array of scopes , try switching between them using scopearray[n].activate(); seems not initiate paperscope.project , can't assign layers or draw.

any in solving appreciated.

i set canvases based on size of array , store them in object:

paper.install(window); ...   var paperpad = {}; var layers = {     'back': 0,     'draw': 1,     'control': 2,     'front': 3 }   function setupcanvas(){  // init canvas , calculate width/height/centre for(var c in canvaslist){    var el = document.createelement("canvas");   var id = '' + canvaslist[c][0] + '' + canvaslist[c][1] + '' + canvaslist[c][2];    el.width = canvaswidth;   el.height = canvasheight;   el.setattribute('id', id);   el.setattribute('class', 'padcanvas');   document.body.appendchild(el);    paperpad[id] = new paper.paperscope();   paperpad[id].setup(el);  }

and attempt automatically setup layers accessing project global error saying project null.

function setuplayers() {

for(var p in paperpad){    paperpad[p].activate();   project.layers[0].setname('back');    for(var l in layers) {     if(!project.layers[layers[l]]){       var layer = new layer();       layer.setname(l);     }   } }

}

same happens in draw functions

function draw() {

for(var p in paperpad) {    paperpad[p].activate();    // draw functions }

}

i'm sure there's i'm missing how scoping works.

paperjs not update global variable project though you've installed paper globals via paper.install(window) in pure javascript mode. if set project = paperpad[id]; should work. end using paper.project , manually updating because started way , seems natural @ point.

but paper doesn't manage keeping project up-to-date in javascript mode.


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