Add minimum/maximumY to FlatRegion and fix a typo in Polygonal2DRegion

src/main/java/com/sk89q/worldedit/regions/CuboidRegion.java

@@ -87,6 +87,14 @@ public class CuboidRegion extends AbstractRegion implements FlatRegion {
                          Math.max(pos1.getZ(), pos2.getZ()));
     }
 
+    public int getMinimumY() {
+        return Math.min(pos1.getBlockX(), pos2.getBlockY());
+    }
+
+    public int getMaximumY() {
+        return Math.max(pos1.getBlockX(), pos2.getBlockY());
+    }
+
     /**
      * Get the number of blocks in the region.
      *

src/main/java/com/sk89q/worldedit/regions/FlatRegion.java

@@ -23,5 +23,19 @@ import com.sk89q.worldedit.Vector2D;
 
 public interface FlatRegion extends Region {
 
+    /**
+     * Gets the minimum Y value
+     *
+     * @return
+     */
+    public int getMinimumY();
+
+    /**
+     * Gets the maximum Y value
+     *
+     * @return
+     */
+    public int getMaximumY();
+
     public Iterable<Vector2D> asFlatRegion();
 }

src/main/java/com/sk89q/worldedit/regions/Polygonal2DRegion.java

@@ -167,6 +167,11 @@ public class Polygonal2DRegion extends AbstractRegion implements FlatRegion {
      *
      * @return min y
      */
+    public int getMinimumY() {
+        return minY;
+    }
+
+    @Deprecated
     public int getMininumY() {
         return minY;
     }

src/main/java/com/sk89q/worldedit/regions/Polygonal2DRegionSelector.java

@@ -124,14 +124,14 @@ public class Polygonal2DRegionSelector implements RegionSelector, CUIRegion {
 
         session.dispatchCUIEvent(player, new SelectionShapeEvent(getTypeID()));
         session.dispatchCUIEvent(player, new SelectionPoint2DEvent(0, pos, getArea()));
-        session.dispatchCUIEvent(player, new SelectionMinMaxEvent(region.getMininumY(), region.getMaximumY()));
+        session.dispatchCUIEvent(player, new SelectionMinMaxEvent(region.getMinimumY(), region.getMaximumY()));
     }
 
     public void explainSecondarySelection(LocalPlayer player, LocalSession session, Vector pos) {
         player.print("Added point #" + region.size() + " at " + pos + ".");
 
         session.dispatchCUIEvent(player, new SelectionPoint2DEvent(region.size() - 1, pos, getArea()));
-        session.dispatchCUIEvent(player, new SelectionMinMaxEvent(region.getMininumY(), region.getMaximumY()));
+        session.dispatchCUIEvent(player, new SelectionMinMaxEvent(region.getMinimumY(), region.getMaximumY()));
     }
 
     public void explainRegionAdjust(LocalPlayer player, LocalSession session) {
@@ -195,7 +195,7 @@ public class Polygonal2DRegionSelector implements RegionSelector, CUIRegion {
             session.dispatchCUIEvent(player, new SelectionPoint2DEvent(id, points.get(id), getArea()));
         }
 
-        session.dispatchCUIEvent(player, new SelectionMinMaxEvent(region.getMininumY(), region.getMaximumY()));
+        session.dispatchCUIEvent(player, new SelectionMinMaxEvent(region.getMinimumY(), region.getMaximumY()));
     }
 
     public void describeLegacyCUI(LocalSession session, LocalPlayer player) {