html - Fastest way to create a JSON serializable image in node.js & place it on client canvas? -


i'm building app meteor.js requires dynamically generated images. whole lot of small, dynamically generated images; generated pixel pixel, collectively require ~25000 pixels of image per second. realizing quite computational load, i've decided use meteor's server methods speed process.

as of now, here's functional attempt:

server-side generation of pixel array

loadimage = function(){     this.imagepixels = new uint8array(4*dim*dim);     for(var = 0; < dim; i++){     for(var j = 0; j < dim; j++){         var x = 255*i/dim;         var y = 255*j/dim;         this.setpixel(this.imagepixels,                       i, j, eval(this.redeq)                           , eval(this.greeneq)                           , eval(this.blueeq)                           , 255);         }     } }

and intermediate stuff happens (code not shown), data sent client, , following places "image" onto canvas via uint8array.set:

var elem = document.getelementbyid(this.canvasid); var ctx = elem.getcontext('2d'); var imagedata = ctx.getimagedata(0, 0, dim, dim); var data = imagedata.data; data.set(this.evo.pixels); ctx.putimagedata(imagedata, 0, 0);

this fine , dandy except... need speed. so, being said, here's question:

is possible create json serializable image within node.js can efficiently placed on html canvas and, if so, how?


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