X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=org.simantics.district.maps%2Fsrc%2Forg%2Fsimantics%2Fmaps%2FMapScalingTransform.java;h=e29e8e553fc9fadc90c326dcb28f704c3fabf171;hb=refs%2Fchanges%2F95%2F2895%2F4;hp=e208be71c6eb36e8910b43ee575d84cd10271650;hpb=02ecca5e61d2eb17de40cc058be678b414aaad00;p=simantics%2Fdistrict.git

diff --git a/org.simantics.district.maps/src/org/simantics/maps/MapScalingTransform.java b/org.simantics.district.maps/src/org/simantics/maps/MapScalingTransform.java
index e208be71..e29e8e55 100644
--- a/org.simantics.district.maps/src/org/simantics/maps/MapScalingTransform.java
+++ b/org.simantics.district.maps/src/org/simantics/maps/MapScalingTransform.java
@@ -6,8 +6,8 @@ public class MapScalingTransform {
 
     private MapScalingTransform() {
     }
-
-    public static final AffineTransform INSTANCE = new AffineTransform(100000, 0, 0, 100000, 0, 0);
+    public static final double scale = 256.0d / 360.0d;
+    public static final AffineTransform INSTANCE = new AffineTransform(scale, 0, 0, scale, 0, 0);
 
     public static double getScaleX() {
         return INSTANCE.getScaleX();
@@ -16,4 +16,15 @@ public class MapScalingTransform {
     public static double getScaleY() {
         return INSTANCE.getScaleY();
     }
+    
+    public static int zoomLevel(AffineTransform current) {
+        double org = INSTANCE.getScaleX();
+        double cur = current.getScaleX();
+        double f = cur / org;
+        double zoomLevel = Math.log10(f) / Math.log10(2);
+        if (zoomLevel < 0) {
+            zoomLevel = 0;
+        }
+        return (int) zoomLevel;
+    }
 }