Integer findClosestZoom(GridSet gridSet, WMSMapContent map) {
double reqScale =
RendererUtilities.calculateOGCScale(bounds(map), gridSet.getTileWidth(), null);
int i = 0;
double error = Math.abs(gridSet.getGrid(i).getScaleDenominator() - reqScale);
while (i < gridSet.getNumLevels() - 1) {
Grid g = gridSet.getGrid(i + 1);
double e = Math.abs(g.getScaleDenominator() - reqScale);
if (e > error) {
break;
} else {
error = e;
}
i++;
}
return Math.max(i, 0);
}
/**
* Gets the current scale of the map. The calculation happens according to OGC specification.
*
* @return The scale
*/
public Double getScale() {
return RendererUtilities.calculateOGCScale(this.getDisplayArea(), this.getWidth(), null);
}