More accurate comments

Author: TomyLobo

worldedit-core/src/main/java/com/sk89q/worldedit/EditSession.java

@@ -2362,12 +2362,13 @@ public int deformRegion(final Region region, final Vector3 zero, final Vector3 u
         final DoubleArrayList<BlockVector3, BaseBlock> queue = new DoubleArrayList<>(false);
 
         for (BlockVector3 position : region) {
-            // offset, scale
+            // transform
             final Vector3 scaled = position.toVector3().subtract(zero).divide(unit);
 
-            // transform
+            // deform
             expression.evaluate(new double[]{scaled.getX(), scaled.getY(), scaled.getZ()}, timeout);
 
+            // untransform, round-nearest
             final BlockVector3 sourcePosition = environment.toWorld(x.getValue(), y.getValue(), z.getValue());
 
             // read block from world

worldedit-core/src/main/java/com/sk89q/worldedit/regions/shape/WorldEditExpressionEnvironment.java

@@ -38,7 +38,6 @@ public WorldEditExpressionEnvironment(Extent extent, Vector3 unit, Vector3 zero)
     }
 
     public BlockVector3 toWorld(double x, double y, double z) {
-        // unscale, unoffset, round-nearest
         return Vector3.at(x, y, z).multiply(unit).add(zero2).toBlockPoint();
     }