Prevent over zoom beyond image natural size

[poebrand]

Another nice config option would be a preventOverZoom (true/false) flag. Currently it is possible to zoom beyond the bounds of the full size image's resolution, thus creating distortion.

It appears within the xscale method... you could check the natural dimensions of the image and prevent zooming beyond those bounds.

jQuery.fn.extend({
    //IE 11 and below safe way to get the natural dimensions
    getNaturalDimensions: function () {
        if (this.length === 0) {
            return null;
        }

        var img = this[0];

        //Modern browsers
        if ('naturalWidth' in img) {
            return { width: img.naturalWidth, height: img.naturalHeight };
        }

        //Older browsers
        var tempImg = new Image();
        tempImg.src = img.src;
        return { width: tempImg.width, height: tempImg.height };
    }
});