Merge branch 'master' of https://git.frank-ebner.de/FHWS/IndoorMap

mapview/2D/MV2DElementFloorUnderlay.h

@@ -92,7 +92,7 @@ public:
 
 
 		// if the to-be-displayed image is smaller than the input-one, use a pre-computed downscaled version
-		if (scaledArea < origArea) {
+		if (scaledArea < origArea*0.75) {
 			// does the cached downscaled image needs rebuild? (size changed)
 			if (imgScaled.width() != sw || imgScaled.height() != sh) {
 				imgScaled = img.scaled(sw, sh, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);