Irregularly Misaligning Overlayviews

[Reggie Wlodarczyk]

How come the red bars in this map: http://www.maastrichtbereikbaar.nl/auto.html are showing at irregular positions? When I first implemented this it worked perfectly, since a month or they started misaligning. They seem to shift around when zooming as well.

The blue P icon markers each contain an OverlayView that shows the number and red inidication bar. Here is the code that draws the overlayview:

    ParkingspotOverlay.prototype.draw = function() {
        var projection = this.getProjection();
        if (projection != null) {
            var position = projection.fromLatLngToDivPixel(this.get('position'));
            var percentage = 100 - Math.round(((this.freespots / this.totalspots) *100));

            if (percentage > 100) { percentage = 100; }
            if (percentage < 0 ) { percentage = 0; }

            // label
            var divlabel = this.divlabel_;
            divlabel.style.left = (position.x - 15) + 'px';
            divlabel.style.top = (position.y - 25) + 'px';
            divlabel.style.display = 'block';

            var labeltext = this.freespots.toString();
            if (this.freespots <= 0) {
                labeltext = 'VOL';
            }

            this.divlabel_.innerHTML = labeltext;

            // bar
            var div = this.div_;
            div.style.left = (position.x - 15) + 'px';
            div.style.top = (position.y - 55) + 'px';
            div.style.display = 'block';

            var bardiv = this.bardiv_;
            bardiv.style.width = percentage.toString() + '%';
        }
    };

[Chris Broadfoot]

Probably some sort of rounding error. Try rounding/flooring the point returned by fromLatLngToDivPixel.

--

http://twitter.com/broady

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