Question

101

fabric.js - create Image object from ImageData object of canvas API

rated 0 times [ 104] [ 3] / answers: 1 / hits: 16134 / 11 Years ago, sat, september 14, 2013, 12:00:00

I want to create an image object in fabric.js from ImageData object, we can get ImageData from this:

var imgData=ctx.getImageData(10,10,50,50);

//ctx.putImageData(imgData,10,70);



// something liket that

var image = new fabric.Image.fromImageData (...);

Is there any way to create an image object from ImageData object?

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juancarlos

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Total Points: 580

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4 Years ago

answered 11 Years ago jack · Accepted Answer

Let me put my idea here, I don't like this way but have no others around -

var ctx = canvas.getContext('2d');

var data = ctx.getImageData(0, 0, 20, 20);



var c = document.createElement('canvas');



c.setAttribute('id', '_temp_canvas');

c.width = 20;

c.height = 20;



c.getContext('2d').putImageData(data, 0, 0);



fabric.Image.fromURL(c.toDataURL(), function(img) {

    img.left = 50;

    img.top = 50;

    canvas.add(img);

    img.bringToFront();

    c = null;

    $('#_temp_canvas').remove();

    canvas.renderAll();

});