The extreme large number is the correct number -- unless you live in
near London (Lng 0) or at a small zoom.

The error is likely in somewhere else, but again, you should take time
to produce a smaller page and include all the code you think
problematic.





On Jun 5, 12:36 pm, jamie <[email protected]> wrote:
> Hi Group,
> First, let me please explain that  can not provide a map page link -
> the page in question is can not be made publicly available as it would
> require giving uber-account access to the world on our site, something
> I can not do ;(
>
> Abstracting the code to a stand-alone page is not really an option
> either, as a lot of the page is dynamically generated.
>
> I am trying to place a map overlay but keep it's proportion with the
> original image.
>
> The original code drew a rectangle inline of the map container
> boundries around a GGroundOverlay - this is working perfectly, but I
> need to try and maintain the aspect ratio of the groundOverlay image
> itself.
>
> The North East point is drawn first, inset from the top right corner
> of the map container - this works perfectly.
>
> The dimensions of the overlay image have already been stored in an
> object (fp_dimensions) as w & h (width and height).
>
> I convert the North East point position to pixels, which gives me
> extreamly high numbers, not what I was expecting:
> x: 18108180
> y: 11363591
>
> From this I minus the width and height of the groundOverlay image
>
> I convert these values back to lat/lng
>
> And place the South East positioning handle - which ends up a long way
> from where it should be, top right of the map.
>
> My apologies again for posting a code snippet, flame me please if you
> feel the need, but here goes:
>
> function fitFloorPlanToMap()
> {
>         marker_NE.setPoint( padBounds( map.getBounds(), true ).getNorthEast
> () );
>
>     var NE_pixels = map.getCurrentMapType().getProjection
> ().fromLatLngToPixel(new GLatLng(marker_NE.getPoint().lat(),
> marker_NE.getPoint().lng()), map.getZoom());
>
>     //add image width to it in pixels
>     var fixed_image_ratio_w = NE_pixels.x - fp_dimensions.w;
>
>     //add image height to it in pixels
>     var fixed_image_ratio_h = NE_pixels.y + fp_dimensions.h;
>
>     console.log(NE_pixels.x - fp_dimensions.w, NE_pixels.x,
> fp_dimensions.w);
>     console.log(NE_pixels.y - fp_dimensions.h, NE_pixels.y,
> fp_dimensions.h);
>     //convert this back to lat
>     var SW_latlng = map.getCurrentMapType().getProjection
> ().fromPixelToLatLng(new GLatLng(fixed_image_ratio_w,
> fixed_image_ratio_h), map.getZoom());
>
>     //use this coord for bottom right point
>     marker_SW.setPoint( SW_latlng );
>
>     console.log( SW_latlng );
>
>         updatePolyline();
>
> }
>
> Can anybody please see what I am doing wrong?
>
> I am sure that when I am converting the North East point lat/lng to
> pixels I am not being returned the correct values, but I can not for
> the life of me see why???
>
> Any help much appreciated
>
> Thanks in advance
>
> Jamie
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