Hi Bart-
At the moment, our code assumes that there's a non-transparent layer
as the base map for any map type.
If the goal is to soften the colours of the map tiles, there are a
couple of ways of doing this:
1. Create a combination of transparent/non-transparent tiles.
This can be done by adding a second tile layer to the custom map type
the user is creating.
That layer would contain simple grey tiles.
The fully opaque (alpha = 1.0) layer may be added behind the user's
semi-transparent (alpha = 0.7) layer of tiles.
Alternatively, a semitransparent (alpha = 0.3) grey layer may be added
in front of the user's original opaque (alpha = 1.0) layer of tiles.
In both cases, the colors of the user's tile layer will be diluted (alpha = 0.7)
2. Add a custom overlay that covers the entire map viewport on top of the map:
public class MyOverlayRectangle extends OverlayBase {
// previous know map size.
private var oldSize:Point = null;
public function MyOverlayRectangle() {
super();
}
// positionOverlay override.
public override function positionOverlay(zoomChanged:Boolean):void {
var mapSize:Point = pane.map.getSize();
if (oldSize == null || !mapSize.equals(oldSize)) {
oldSize = mapSize;
graphics.clear();
graphics.lineStyle(0, 0, 0);
graphics.beginFill(0xA0A0A0, 0.3); // color used to dampen the
intensity of tiles is A0A0A0, intensity 0.3
graphics.drawRect(0, 0, mapSize.x, mapSize.y);
graphics.endFill();
}
}
}
If neither of those work for you, then feel free to file a feature request.
- pamela
On Wed, Jan 21, 2009 at 10:57 PM, Bart <[email protected]> wrote:
>
> Oops, obviously i meant alpha < 1 instead of non zero.
>
> For a base layer alpha=1 seems the most logical choice, but sometimes
> to soften the colors of the original map tiles i like to use a bit of
> transparency, like alpha=0.7 in the posted examples...
> >
>
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