From 21c77a2fc8bef3112c1689a0b13a3b97913cd734 Mon Sep 17 00:00:00 2001
From: Jesse Boyd <jessepaleg@gmail.com>
Date: Mon, 9 Jan 2017 14:39:55 +1100
Subject: [PATCH] Fixes #391

---
 .../object/brush/heightmap/ScalableHeightMap.java    |  9 +++++++--
 .../com/sk89q/worldedit/command/RegionCommands.java  | 12 +++++++-----
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/core/src/main/java/com/boydti/fawe/object/brush/heightmap/ScalableHeightMap.java b/core/src/main/java/com/boydti/fawe/object/brush/heightmap/ScalableHeightMap.java
index d6cff00b..f4b82eff 100644
--- a/core/src/main/java/com/boydti/fawe/object/brush/heightmap/ScalableHeightMap.java
+++ b/core/src/main/java/com/boydti/fawe/object/brush/heightmap/ScalableHeightMap.java
@@ -2,6 +2,7 @@ package com.boydti.fawe.object.brush.heightmap;
 
 import com.boydti.fawe.object.IntegerPair;
 import com.boydti.fawe.object.PseudoRandom;
+import com.boydti.fawe.util.MainUtil;
 import com.boydti.fawe.util.MathMan;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
@@ -145,8 +146,12 @@ public class ScalableHeightMap {
         Region region = new CuboidRegion(session.getWorld(), min, max);
         HeightMap heightMap = new HeightMap(session, region, true);
         if (smooth) {
-            HeightMapFilter filter = new HeightMapFilter(new GaussianKernel(5, 1));
-            newData = filter.filter(newData, diameter, diameter);
+            try {
+                HeightMapFilter filter = (HeightMapFilter) HeightMapFilter.class.getConstructors()[0].newInstance(GaussianKernel.class.getConstructors()[0].newInstance(5, 1));
+                newData = filter.filter(newData, diameter, diameter);
+            } catch (Throwable e) {
+                MainUtil.handleError(e);
+            }
         }
         heightMap.apply(newData);
     }
diff --git a/core/src/main/java/com/sk89q/worldedit/command/RegionCommands.java b/core/src/main/java/com/sk89q/worldedit/command/RegionCommands.java
index ef044d0f..10099680 100644
--- a/core/src/main/java/com/sk89q/worldedit/command/RegionCommands.java
+++ b/core/src/main/java/com/sk89q/worldedit/command/RegionCommands.java
@@ -474,11 +474,13 @@ public class RegionCommands {
     @Logging(REGION)
     public void smooth(Player player, EditSession editSession, @Selection Region region, @Optional("1") int iterations, @Switch('n') boolean affectNatural) throws WorldEditException {
         HeightMap heightMap = new HeightMap(editSession, region, affectNatural);
-        HeightMapFilter filter = new HeightMapFilter(new GaussianKernel(5, 1.0));
-        int affected = heightMap.applyFilter(filter, iterations);
-
-        BBC.VISITOR_BLOCK.send(player, affected);
-
+        try {
+            HeightMapFilter filter = (HeightMapFilter) HeightMapFilter.class.getConstructors()[0].newInstance(GaussianKernel.class.getConstructors()[0].newInstance(5, 1));
+            int affected = heightMap.applyFilter(filter, iterations);
+            BBC.VISITOR_BLOCK.send(player, affected);
+        } catch (Throwable e) {
+            throw new RuntimeException(e);
+        }
     }
 
     @Command(