comparison data/model/PowerOfSqrtTwoZoomConstraint.cpp @ 1552:05c3fbaec8ea

Introduce RelativelyFineZoomConstraint, which encodes more-or-less the scheme that was already used for the horizontal thumbwheel in the pane (which overrode the layers' own zoom constraints unless they said they couldn't support any other)

 
 //        SVCERR << "Testing base " << base << " (i = " << i << ", power = " << power << ", type = " << type << ")" << endl;
 
         if (base == blockSize) {
             result = base;
+//            SVCERR << "Equal, accepting" << endl;
             break;
         }
 
         if (base > blockSize) {
             if (dir == RoundNearest) {
                 if (base - blockSize < blockSize - prevBase) {
                     dir = RoundUp;
+//                    SVCERR << "Closer to " << base << " than " << prevBase
+//                           << ", rounding up" << endl;
                 } else {
                     dir = RoundDown;
+//                    SVCERR << "Closer to " << prevBase << " than " << base
+//                           << ", rounding down" << endl;
                 }
             }
             if (dir == RoundUp) {
                 result = base;
                 break;

 
     if (result > getMaxZoomLevel().level) {
         result = getMaxZoomLevel().level;
     }
 
+//    SVCERR << "Returning result " << result << endl;
+
     return result;
 }