/** fix the resolution to something compatible with the resolutions available in tilecache. */
private Transformer fixTiledTransformer(Transformer transformer) {
double resolution;
// if clientResolution is passed from client use it explicitly if available otherwise calculate
// nearest resolution
if (this.context.getCurrentPageParams().has("clientResolution")) {
float clientResolution = this.context.getCurrentPageParams().getFloat("clientResolution");
boolean hasServerResolution = false;
for (double serverResolution : this.tileCacheLayerInfo.getResolutions()) {
if (serverResolution == clientResolution) {
hasServerResolution = true;
}
}
if (!hasServerResolution) {
return null;
} else {
resolution = clientResolution;
}
} else {
double targetResolution = (transformer.getGeoW() / transformer.getStraightBitmapW());
TileCacheLayerInfo.ResolutionInfo resolutionInfo =
tileCacheLayerInfo.getNearestResolution(targetResolution);
resolution = resolutionInfo.value;
}
// TODO Gucken was mit diesem Transformer gemacht wird!!!
transformer = transformer.clone();
transformer.setResolution(resolution);
return transformer;
}
