idk, messing around with region filtering

worldedit-core/src/main/java/com/boydti/fawe/beta/CharFilterBlock.java

@@ -16,7 +16,6 @@ import javax.annotation.Nullable;
 import static com.sk89q.worldedit.world.block.BlockTypes.states;
 public class CharFilterBlock extends ChunkFilterBlock {
     private CharGetBlocks get;
-
     private IChunkSet set;
 
     private char[] getArr;
@@ -43,7 +42,7 @@ public class CharFilterBlock extends ChunkFilterBlock {
     public void flood(final IChunkGet iget, final IChunkSet iset, final int layer, Flood flood, FilterBlockMask mask) {
         final int maxDepth = flood.getMaxDepth();
         final boolean checkDepth = maxDepth < Character.MAX_VALUE;
-        if (init(iget, iset, layer)) {
+        if (init(iget, iset, layer) != null) {
             while ((index = flood.poll()) != -1) {
                 x = index & 15;
                 z = (index >> 4) & 15;
@@ -62,10 +61,11 @@ public class CharFilterBlock extends ChunkFilterBlock {
         }
     }
 
-    private final boolean init(final IChunkGet iget, final IChunkSet iset, final int layer) {
+    @Override
+    public final ChunkFilterBlock init(final IChunkGet iget, final IChunkSet iset, final int layer) {
         this.layer = layer;
         final CharGetBlocks get = (CharGetBlocks) iget;
-        if (!get.hasSection(layer)) return false;
+        if (!get.hasSection(layer)) return null;
         this.set = iset;
         getArr = get.sections[layer].get(get, layer);
         if (set.hasSection(layer)) {
@@ -76,29 +76,44 @@ public class CharFilterBlock extends ChunkFilterBlock {
             setArr = null;
         }
         this.yy = layer << 4;
-        return true;
+        return this;
     }
 
     @Override
-    public final void filter(final IChunkGet iget, final IChunkSet iset, final int layer, final Filter filter, final @Nullable Region region, BlockVector3 min, BlockVector3 max) {
+    public void filter(Filter filter, int x, int y, int z) {
-        if (init(iget, iset, layer)) {
+        this.x = x;
-            if (region == null) {
+        this.y = y;
-                if (min != null && max != null) {
+        this.z = z;
-                    iterate(min, max, layer, filter);
+        this.index = x | (z << 4) | (y << 8);
-                } else {
+        filter.applyBlock(this);
-                    iterate(filter);
     }
-            } else {
+
-                if (min != null && max != null) {
+    @Override
-                    iterate(region, min, max, layer, filter);
+    public void filter(Filter filter, int yStart, int yEnd) {
-                } else {
+        for (y = yStart, index = (yStart << 8); y < yEnd; y++) {
-                    iterate(region, filter);
+            for (z = 0; z < 16; z++) {
+                for (x = 0; x < 16; x++, index++) {
+                    filter.applyBlock(this);
                 }
             }
         }
     }
 
-    private void iterate(final Region region, final Filter filter) {
+    @Override
+    public void filter(Filter filter, int minX, int minY, int minZ, int maxX, int maxY, int maxZ) {
+        int yis = (minY << 8);
+        int zis = (minZ << 4);
+        for (y = minY, index = yis; y <= maxY; y++) {
+            for (z = minZ, index += zis; z <= maxZ; z++) {
+                for (x = minX, index += minX; x <= maxX; x++, index++) {
+                    filter.applyBlock(this);
+                }
+            }
+        }
+    }
+
+    @Override
+    public final void filter(final Filter filter, final Region region) {
         for (y = 0, index = 0; y < 16; y++) {
             int absY = yy + y;
             for (z = 0; z < 16; z++) {
@@ -113,51 +128,8 @@ public class CharFilterBlock extends ChunkFilterBlock {
         }
     }
 
-    private void iterate(final Region region, BlockVector3 min, BlockVector3 max, int layer, final Filter filter) {
+    @Override
-        int by = Math.max(min.getY(), layer << 4) & 15;
+    public final void filter(final Filter filter) {
-        int ty = Math.min(max.getY(), 15 + (layer << 4)) & 15;
-        int bx = min.getX();
-        int bz = min.getZ();
-        int tx = max.getX();
-        int tz = max.getZ();
-        for (y = by; y <= ty; y++) {
-            int yIndex = (y << 8);
-            int absY = yy + y;
-            for (z = bz; z <= tz; z++) {
-                int zIndex = yIndex + ((z) << 4);
-                int absZ = zz + z;
-                for (x = bx; x <= tx; x++) {
-                    index = zIndex + x;
-                    int absX = xx + x;
-                    if (region.contains(absX, absY, absZ)) {
-                        filter.applyBlock(this);
-                    }
-
-                }
-            }
-        }
-    }
-
-    private void iterate(BlockVector3 min, BlockVector3 max, int layer, final Filter filter) {
-        int by = Math.max(min.getY(), layer << 4) & 15;
-        int ty = Math.min(max.getY(), 15 + (layer << 4)) & 15;
-        int bx = min.getX();
-        int bz = min.getZ();
-        int tx = max.getX();
-        int tz = max.getZ();
-        for (y = by; y <= ty; y++) {
-            int yIndex = (y << 8);
-            for (z = bz; z <= tz; z++) {
-                int zIndex = yIndex + ((z) << 4);
-                for (x = bx; x <= tx; x++) {
-                    index = zIndex + x;
-                    filter.applyBlock(this);
-                }
-            }
-        }
-    }
-
-    private final void iterate(final Filter filter) {
         for (y = 0, index = 0; y < 16; y++) {
             for (z = 0; z < 16; z++) {
                 for (x = 0; x < 16; x++, index++) {

worldedit-core/src/main/java/com/boydti/fawe/beta/ChunkFilterBlock.java

@@ -13,7 +13,18 @@ public abstract class ChunkFilterBlock extends SimpleFilterBlock {
 
     public abstract ChunkFilterBlock init(int X, int Z, IChunkGet chunk);
 
+    public abstract ChunkFilterBlock init(final IChunkGet iget, final IChunkSet iset, final int layer);
+
     public abstract void flood(final IChunkGet iget, final IChunkSet iset, final int layer, Flood flood, FilterBlockMask mask);
 
-    public abstract void filter(IChunkGet get, IChunkSet set, int layer, Filter filter, @Nullable Region region, BlockVector3 min, BlockVector3 max);
+
+    public abstract void filter(Filter filter, int x, int y, int z);
+
+    public abstract void filter(Filter filter, int minX, int minY, int minZ, int maxX, int maxY, int maxZ);
+
+    public abstract void filter(Filter filter);
+
+    public abstract void filter(Filter filter, int yStart, int yEnd);
+
+    public abstract void filter(final Filter filter, final Region region);
 }

worldedit-core/src/main/java/com/boydti/fawe/beta/IBlocks.java

@@ -6,5 +6,5 @@ package com.boydti.fawe.beta;
 public interface IBlocks extends Trimable {
     boolean hasSection(int layer);
 
-    void reset();
+    IChunkSet reset();
 }

worldedit-core/src/main/java/com/boydti/fawe/beta/IChunk.java

@@ -71,7 +71,7 @@ public interface IChunk<T extends Future<T>> extends Trimable, Callable<T> {
      * @param unitialized a mutable block vector (buffer)
      * @param unitialized2 a mutable block vector (buffer)
      */
-    void filterBlocks(Filter filter, ChunkFilterBlock block, @Nullable Region region, MutableBlockVector3 unitialized, MutableBlockVector3 unitialized2);
+    void filterBlocks(Filter filter, ChunkFilterBlock block, @Nullable Region region);
 
     void flood(Flood flood, FilterBlockMask mask, ChunkFilterBlock block);
 

worldedit-core/src/main/java/com/boydti/fawe/beta/IChunkSet.java

@@ -8,8 +8,6 @@ import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 
 import javax.annotation.Nullable;
-import java.util.HashMap;
-import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
@@ -43,7 +41,7 @@ public interface IChunkSet extends IBlocks, OutputExtent {
     Set<UUID> getEntityRemoves();
 
     @Override
-    void reset();
+    IChunkSet reset();
 
     @Nullable
     @Override

worldedit-core/src/main/java/com/boydti/fawe/beta/NorthVector.java

@@ -3,7 +3,6 @@ package com.boydti.fawe.beta;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;

worldedit-core/src/main/java/com/boydti/fawe/beta/SimpleFilterBlock.java

@@ -1,14 +1,6 @@
 package com.boydti.fawe.beta;
 
-import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.extent.Extent;
-import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.regions.Region;
-import com.sk89q.worldedit.world.block.BaseBlock;
-import com.sk89q.worldedit.world.block.BlockState;
-import com.sk89q.worldedit.world.block.BlockTypes;
-
-import javax.annotation.Nullable;
 
 public abstract class SimpleFilterBlock extends FilterBlock {
     private final Extent extent;

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/DelegateChunkSet.java

@@ -0,0 +1,113 @@
+package com.boydti.fawe.beta.implementation;
+
+import com.boydti.fawe.beta.IChunkSet;
+import com.sk89q.jnbt.CompoundTag;
+import com.sk89q.worldedit.WorldEditException;
+import com.sk89q.worldedit.function.operation.Operation;
+import com.sk89q.worldedit.math.BlockVector2;
+import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.world.biome.BiomeType;
+import com.sk89q.worldedit.world.block.BlockState;
+import com.sk89q.worldedit.world.block.BlockStateHolder;
+
+import javax.annotation.Nullable;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+
+public interface DelegateChunkSet extends IChunkSet {
+    IChunkSet getParent();
+
+    @Override
+    default boolean setBiome(int x, int y, int z, BiomeType biome) {
+        return getParent().setBiome(x, y, z, biome);
+    }
+
+    @Override
+    default boolean setBlock(int x, int y, int z, BlockStateHolder holder) {
+        return getParent().setBlock(x, y, z, holder);
+    }
+
+    @Override
+    default boolean isEmpty() {
+        return getParent().isEmpty();
+    }
+
+    @Override
+    default void setTile(int x, int y, int z, CompoundTag tile) {
+        getParent().setTile(x, y, z, tile);
+    }
+
+    @Override
+    default void setEntity(CompoundTag tag) {
+        getParent().setEntity(tag);
+    }
+
+    @Override
+    default void removeEntity(UUID uuid) {
+        getParent().removeEntity(uuid);
+    }
+
+    @Override
+    default BlockState getBlock(int x, int y, int z) {
+        return getParent().getBlock(x, y, z);
+    }
+
+    @Override
+    default char[] getArray(int layer) {
+        return getParent().getArray(layer);
+    }
+
+    @Override
+    default BiomeType[] getBiomes() {
+        return getParent().getBiomes();
+    }
+
+    @Override
+    default Map<Short, CompoundTag> getTiles() {
+        return getParent().getTiles();
+    }
+
+    @Override
+    default Set<CompoundTag> getEntities() {
+        return getParent().getEntities();
+    }
+
+    @Override
+    default Set<UUID> getEntityRemoves() {
+        return getParent().getEntityRemoves();
+    }
+
+    @Override
+    default IChunkSet reset() {
+        IChunkSet parent = getParent();
+        parent.reset();
+        return parent;
+    }
+
+    @Override
+    @Nullable
+    default Operation commit() {
+        return getParent().commit();
+    }
+
+    @Override
+    default boolean hasSection(int layer) {
+        return getParent().hasSection(layer);
+    }
+
+    @Override
+    default boolean trim(boolean aggressive) {
+        return getParent().trim(aggressive);
+    }
+
+    @Override
+    default <T extends BlockStateHolder<T>> boolean setBlock(BlockVector3 position, T block) throws WorldEditException {
+        return getParent().setBlock(position, block);
+    }
+
+    @Override
+    default boolean setBiome(BlockVector2 position, BiomeType biome) {
+        return getParent().setBiome(position, biome);
+    }
+}

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/CharBlocks.java

@@ -1,6 +1,7 @@
 package com.boydti.fawe.beta.implementation.blocks;
 
 import com.boydti.fawe.beta.IBlocks;
+import com.boydti.fawe.beta.IChunkSet;
 
 public class CharBlocks implements IBlocks {
     public final char[][] blocks;
@@ -9,14 +10,14 @@ public class CharBlocks implements IBlocks {
     public CharBlocks() {
         blocks = new char[16][];
         sections = new Section[16];
-        for (int i = 0; i < 16; i++) sections[i] = NULL;
+        for (int i = 0; i < 16; i++) sections[i] = EMPTY;
     }
 
     @Override
     public boolean trim(final boolean aggressive) {
         boolean result = true;
         for (int i = 0; i < 16; i++) {
-            if (sections[i] == NULL) {
+            if (sections[i] == EMPTY) {
                 blocks[i] = null;
             } else {
                 result = false;
@@ -26,12 +27,13 @@ public class CharBlocks implements IBlocks {
     }
 
     @Override
-    public void reset() {
+    public IChunkSet reset() {
-        for (int i = 0; i < 16; i++) sections[i] = NULL;
+        for (int i = 0; i < 16; i++) sections[i] = EMPTY;
+        return null;
     }
 
     public void reset(final int layer) {
-        sections[layer] = NULL;
+        sections[layer] = EMPTY;
     }
 
     public char[] load(final int layer) {
@@ -84,7 +86,7 @@ public class CharBlocks implements IBlocks {
         }
     }
 
-    public static final Section NULL = new Section() {
+    public static final Section EMPTY = new Section() {
         @Override
         public final char[] get(final CharBlocks blocks, final int layer) {
             blocks.sections[layer] = FULL;

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/CharGetBlocks.java

@@ -1,6 +1,7 @@
 package com.boydti.fawe.beta.implementation.blocks;
 
 import com.boydti.fawe.beta.IChunkGet;
+import com.boydti.fawe.beta.IChunkSet;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypes;
@@ -19,14 +20,15 @@ public abstract class CharGetBlocks extends CharBlocks implements IChunkGet {
     @Override
     public boolean trim(final boolean aggressive) {
         for (int i = 0; i < 16; i++) {
-            sections[i] = NULL;
+            sections[i] = EMPTY;
             blocks[i] = null;
         }
         return true;
     }
 
     @Override
-    public void reset() {
+    public IChunkSet reset() {
         super.reset();
+        return null;
     }
 }

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/CharSetBlocks.java

@@ -102,11 +102,12 @@ public class CharSetBlocks extends CharBlocks implements IChunkSet {
     }
 
     @Override
-    public void reset() {
+    public IChunkSet reset() {
         biomes = null;
         tiles = null;
         entities = null;
         entityRemoves = null;
         super.reset();
+        return null;
     }
 }

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/RegionCharSetBlocks.java

@@ -0,0 +1,77 @@
+package com.boydti.fawe.beta.implementation.blocks;
+
+import com.boydti.fawe.FaweCache;
+import com.boydti.fawe.beta.IChunkSet;
+import com.boydti.fawe.beta.implementation.DelegateChunkSet;
+import com.sk89q.jnbt.CompoundTag;
+import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.world.biome.BiomeType;
+import com.sk89q.worldedit.world.block.BlockStateHolder;
+
+public class RegionCharSetBlocks implements DelegateChunkSet {
+    private final Region region;
+    private final CharSetBlocks parent;
+    private final int X, Z;
+
+    public RegionCharSetBlocks(Region region, int X, int Z, CharSetBlocks parent) {
+        this.region = region;
+        this.parent = parent;
+        this.X = X;
+        this.Z = Z;
+    }
+
+    @Override
+    public CharSetBlocks getParent() {
+        return parent;
+    }
+
+    public Region getRegion() {
+        return region;
+    }
+
+    @Override
+    public boolean setBiome(int x, int y, int z, BiomeType biome) {
+        if (region.contains(x, y, z)) {
+            return parent.setBiome(x, y, z, biome);
+        }
+        return false;
+    }
+
+    public static final CharBlocks.Section EMPTY_REGION = new CharBlocks.Section() {
+        @Override
+        public final char[] get(final CharBlocks blocks, final int layer) {
+            RegionCharSetBlocks checked = (RegionCharSetBlocks) blocks;
+            Region region = checked.getRegion();
+
+            blocks.sections[layer] = FULL;
+            char[] arr = blocks.blocks[layer];
+            if (arr == null) {
+                arr = blocks.blocks[layer] = blocks.load(layer);
+            } else {
+                blocks.blocks[layer] = blocks.load(layer, arr);
+            }
+            return arr;
+        }
+    };
+
+    public static final CharBlocks.Section NULL = new CharBlocks.Section() {
+        @Override
+        public final char[] get(final CharBlocks blocks, final int layer) {
+            return FaweCache.EMPTY_CHAR_4096;
+        }
+    };
+
+    // EMPTY_CHAR_4096
+
+    @Override
+    public boolean setBlock(final int x, final int y, final int z, final BlockStateHolder holder) {
+
+    }
+
+    @Override
+    public void setTile(final int x, final int y, final int z, final CompoundTag tile) {
+        if (region.contains(x, y, z)) {
+            super.setTile(x, y, z, tile);
+        }
+    }
+}

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/holder/ChunkHolder.java

@@ -2,16 +2,15 @@ package com.boydti.fawe.beta.implementation.holder;
 
 import com.boydti.fawe.beta.ChunkFilterBlock;
 import com.boydti.fawe.beta.Filter;
-import com.boydti.fawe.beta.FilterBlock;
 import com.boydti.fawe.beta.FilterBlockMask;
 import com.boydti.fawe.beta.Flood;
-import com.boydti.fawe.beta.IQueueExtent;
-import com.boydti.fawe.beta.implementation.blocks.CharSetBlocks;
 import com.boydti.fawe.beta.IChunk;
 import com.boydti.fawe.beta.IChunkGet;
 import com.boydti.fawe.beta.IChunkSet;
+import com.boydti.fawe.beta.IQueueExtent;
 import com.boydti.fawe.beta.implementation.SingleThreadQueueExtent;
 import com.boydti.fawe.beta.implementation.WorldChunkCache;
+import com.boydti.fawe.beta.implementation.blocks.CharSetBlocks;
 import com.boydti.fawe.util.MathMan;
 import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.regions.Region;
@@ -47,38 +46,19 @@ public abstract class ChunkHolder implements IChunk, Supplier<IChunkGet> {
     }
 
     @Override
-    public void filterBlocks(final Filter filter, ChunkFilterBlock block, @Nullable Region region, @Nullable final MutableBlockVector3 min, @Nullable final MutableBlockVector3 max) {
+    public void filterBlocks(final Filter filter, ChunkFilterBlock block, @Nullable Region region) {
         final IChunkGet get = getOrCreateGet();
         final IChunkSet set = getOrCreateSet();
         try {
             if (region != null) {
-                switch (region.getChunkBounds(X, Z, min, max)) {
+                region.filter(this, filter, block, get, set);
-                    case NONE:
+            } else {
-                        return;
-                    case FULL:
-                        if (min.getY() == 0 && max.getY() == 255) {
-                            break;
-                        }
-                    case PARTIAL:
-                        region = null;
-                    case CHECKED:
-                    default: {
-                        int minLayer = min.getY() >> 4;
-                        int maxLayer = max.getY() >> 4;
-                        block = block.init(X, Z, get);
-                        for (int layer = minLayer; layer <= maxLayer; layer++) {
-                            if (!get.hasSection(layer) || !filter.appliesLayer(this, layer)) continue;
-                            block.filter(get, set, layer, filter, region, min, max);
-                        }
-                        return;
-                    }
-                }
-            }
-
                 block = block.init(X, Z, get);
                 for (int layer = 0; layer < 16; layer++) {
                     if (!get.hasSection(layer) || !filter.appliesLayer(this, layer)) continue;
-                block.filter(get, set, layer, filter, region, null, null);
+                    block.init(get, set, layer);
+                    block.filter(filter);
+                }
             }
         } finally {
             filter.finishChunk(this);

worldedit-core/src/main/java/com/sk89q/worldedit/function/RegionFunction.java

@@ -35,5 +35,4 @@ public interface RegionFunction {
      * @throws WorldEditException thrown on an error
      */
     boolean apply(BlockVector3 position) throws WorldEditException;
-
 }

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

@@ -19,29 +19,27 @@
 
 package com.sk89q.worldedit.regions;
 
+import com.boydti.fawe.beta.ChunkFilterBlock;
+import com.boydti.fawe.beta.Filter;
+import com.boydti.fawe.beta.IChunk;
+import com.boydti.fawe.beta.IChunkGet;
+import com.boydti.fawe.beta.IChunkSet;
 import com.boydti.fawe.config.Settings;
-
-import static com.google.common.base.Preconditions.checkArgument;
-import static com.google.common.base.Preconditions.checkNotNull;
-
 import com.boydti.fawe.object.collection.BlockVectorSet;
-import com.boydti.fawe.object.collection.LocalBlockVectorSet;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.math.MutableBlockVector2;
+import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.storage.ChunkStore;
 
 import java.util.AbstractSet;
-import java.util.HashSet;
 import java.util.Iterator;
 import java.util.NoSuchElementException;
 import java.util.Set;
 
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
-import static com.sk89q.worldedit.regions.Region.Contains.*;
 
 /**
  * An axis-aligned cuboid. It can be defined using two corners of the cuboid.
@@ -400,13 +398,7 @@ public class CuboidRegion extends AbstractRegion implements FlatRegion {
     public boolean contains(int x, int z) {
         return x >= this.minX && x <= this.maxX && z >= this.minZ && z <= this.maxZ;
     }
-	@Override
-    public boolean contains(BlockVector3 position) {
-        BlockVector3 min = getMinimumPoint();
-        BlockVector3 max = getMaximumPoint();
 
-        return position.containedWithin(min, max);
-    }
     @Override
     public Iterator<BlockVector3> iterator() {
         if (Settings.IMP.HISTORY.COMPRESSION_LEVEL >= 9 || useOldIterator) {
@@ -629,35 +621,49 @@ public class CuboidRegion extends AbstractRegion implements FlatRegion {
     }
 
     @Override
-    public Contains getChunkBounds(int X, int Z, MutableBlockVector3 min, MutableBlockVector3 max) {
+    public int getMinY() {
-        int minChunkX = minX >> 4;
+        return minY;
-        if (minChunkX <= X) {
+    }
-            int maxChunkX = maxX >> 4;
-            if (maxChunkX >= X) {
-                int minChunkZ = minZ >> 4;
-                if (minChunkZ <= Z) {
-                    int maxChunkZ = maxZ >> 4;
-                    if (maxChunkZ >= Z) {
-                        int cx1 = X << 4;
-                        int cx2 = cx1 + 15;
-                        int cz1 = Z << 4;
-                        int cz2 = cz1 + 15;
 
-                        int bx = Math.max(cx1, minX);
+    @Override
-                        int bz = Math.max(cz1, minZ);
+    public int getMaxY() {
-                        int tx = Math.min(cx2, maxX);
+        return maxY;
-                        int tz = Math.min(cz2, maxZ);
+    }
 
-                        min.setComponents(bx & 15, minY, bz & 15);
+    @Override
-                        max.setComponents(tx & 15, maxY, tz & 15);
+    public void filter(final IChunk chunk, final Filter filter, ChunkFilterBlock block, final IChunkGet get, final IChunkSet set) {
-                        if (min.getX() == 0 && min.getZ() == 0 && max.getX() == 15 && max.getZ() == 15) {
+        int X = chunk.getX();
-                            return FULL;
+        int Z = chunk.getZ();
+        block = block.init(X, Z, get);
+
+        if ((minX + 15) >> 4 <= X && (maxX - 15) >> 4 >= X && (minZ + 15) >> 4 <= Z && (maxZ - 15) >> 4 >= Z) {
+            filter(chunk, filter, block, get, set, minY, maxY);
+            return;
         }
-                        return PARTIAL;
+        int localMinX = Math.max(minX, X << 4) & 15;
+        int localMaxX = Math.min(maxX, 15 + X << 4) & 15;
+        int localMinZ = Math.max(minZ, Z << 4) & 15;
+        int localMaxZ = Math.min(maxZ, 15 + Z << 4) & 15;
+
+        int yStart = (minY & 15);
+        int yEnd = (maxY & 15);
+
+        int minSection = minY >> 4;
+        int maxSection = maxY >> 4;
+        if (minSection == maxSection) {
+            filter(chunk, filter, block, get, set, minSection, localMinX, yStart, localMinZ, localMaxX, yEnd, localMaxZ);
+            return;
         }
+        if (yStart != 0) {
+            filter(chunk, filter, block, get, set, minSection, localMinX, yStart, localMinZ, localMaxX, 15, localMaxZ);
+            minSection++;
         }
+        if (yEnd != 15) {
+            filter(chunk, filter, block, get, set, minSection, localMinX, 0, localMinZ, localMaxX, 15, localMaxZ);
+            maxSection--;
         }
+        for (int layer = minSection; layer < maxSection; layer++) {
+            filter(chunk, filter, block, get, set, layer, localMinX, yStart, localMinZ, localMaxX, yEnd, localMaxZ);
         }
-        return NONE;
     }
 }

worldedit-core/src/main/java/com/sk89q/worldedit/regions/CylinderRegion.java

@@ -21,6 +21,11 @@ package com.sk89q.worldedit.regions;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
+import com.boydti.fawe.beta.ChunkFilterBlock;
+import com.boydti.fawe.beta.Filter;
+import com.boydti.fawe.beta.IChunk;
+import com.boydti.fawe.beta.IChunkGet;
+import com.boydti.fawe.beta.IChunkSet;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.BlockVector2;
@@ -290,25 +295,22 @@ public class CylinderRegion extends AbstractRegion implements FlatRegion {
         minY += changeY;
     }
 
-    /**
-     * Checks to see if a point is inside this region.
-     */
     @Override
-    public boolean contains(BlockVector3 position) {
+    public boolean contains(int x, int y, int z) {
-        final int blockY = position.getBlockY();
+        if (y < minY || y > maxY) {
-        if (blockY < minY || blockY > maxY) {
             return false;
         }
-        int px = position.getBlockX();
+        return contains(x, z);
-        int pz = position.getBlockZ();
+    }
 
-        double dx = Math.abs(px - center.getBlockX()) * radiusInverse.getX();
+    @Override
-        double dz = Math.abs(pz - center.getBlockZ()) * radiusInverse.getZ();
+    public boolean contains(int x, int z) {
+        double dx = Math.abs(x - center.getBlockX()) * radiusInverse.getX();
+        double dz = Math.abs(z - center.getBlockZ()) * radiusInverse.getZ();
 
         return dx * dx + dz * dz <= 1;
     }
 
-
     /**
      * Sets the height of the cylinder to fit the specified Y.
      *
@@ -363,6 +365,16 @@ public class CylinderRegion extends AbstractRegion implements FlatRegion {
         return Polygons.polygonizeCylinder(center, radius, maxPoints);
     }
 
+    @Override
+    public int getMinY() {
+        return minY;
+    }
+
+    @Override
+    public int getMaxY() {
+        return maxY;
+    }
+
     /**
      * Return a new instance with the given center and radius in the X and Z
      * axes with a Y that extends from the bottom of the extent to the top
@@ -381,4 +393,17 @@ public class CylinderRegion extends AbstractRegion implements FlatRegion {
         int maxY = extent.getMaximumPoint().getBlockY();
         return new CylinderRegion(center, radiusVec, minY, maxY);
     }
+
+    @Override
+    public void filter(final IChunk chunk, final Filter filter, final ChunkFilterBlock block, final IChunkGet get, final IChunkSet set) {
+        int bcx = chunk.getX() >> 4;
+        int bcz = chunk.getZ() >> 4;
+        int tcx = bcx + 15;
+        int tcz = bcz + 15;
+        if (contains(bcx, bcz) && contains(tcx, tcz)) {
+            filter(chunk, filter, block, get, set, minY, maxY);
+            return;
+        }
+        super.filter(chunk, filter, block, get, set);
+    }
 }

worldedit-core/src/main/java/com/sk89q/worldedit/regions/EllipsoidRegion.java

@@ -20,6 +20,11 @@
 package com.sk89q.worldedit.regions;
 
 
+import com.boydti.fawe.beta.ChunkFilterBlock;
+import com.boydti.fawe.beta.Filter;
+import com.boydti.fawe.beta.IChunk;
+import com.boydti.fawe.beta.IChunkGet;
+import com.boydti.fawe.beta.IChunkSet;
 import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
@@ -216,18 +221,18 @@ public class EllipsoidRegion extends AbstractRegion {
     }
 
    @Override
-   public boolean contains(BlockVector3 position) {
+   public boolean contains(int x, int y, int z) {
-       int cx = position.getBlockX() - center.getBlockX();
+       int cx = x - center.getBlockX();
        int cx2 = cx * cx;
        if (cx2 > radiusSqr.getBlockX()) {
            return false;
        }
-       int cz = position.getBlockZ() - center.getBlockZ();
+       int cz = z - center.getBlockZ();
        int cz2 = cz * cz;
        if (cz2 > radiusSqr.getBlockZ()) {
            return false;
        }
-       int cy = position.getBlockY() - center.getBlockY();
+       int cy = y - center.getBlockY();
        int cy2 = cy * cy;
        if (radiusSqr.getBlockY() < 255 && cy2 > radiusSqr.getBlockY()) {
            return false;
@@ -235,10 +240,30 @@ public class EllipsoidRegion extends AbstractRegion {
        if (sphere) {
            return cx2 + cy2 + cz2 <= radiusLengthSqr;
        }
-       double cxd = cx * inverseRadius.getX();
+       double cxd = cx2 * inverseRadius.getX();
-       double cyd = cy * inverseRadius.getY();
+       double cyd = cy2 * inverseRadius.getY();
-       double czd = cz * inverseRadius.getZ();
+       double czd = cz2 * inverseRadius.getZ();
-       return cxd * cxd + cyd * cyd + czd * czd <= 1;
+       return cxd + cyd + czd <= 1;
+    }
+
+    @Override
+    public boolean contains(int x, int z) {
+        int cx = x - center.getBlockX();
+        int cx2 = cx * cx;
+        if (cx2 > radiusSqr.getBlockX()) {
+            return false;
+        }
+        int cz = z - center.getBlockZ();
+        int cz2 = cz * cz;
+        if (cz2 > radiusSqr.getBlockZ()) {
+            return false;
+        }
+        if (sphere) {
+            return cx2 + cz2 <= radiusLengthSqr;
+        }
+        double cxd = cx2 * inverseRadius.getX();
+        double czd = cz2 * inverseRadius.getZ();
+        return cxd + czd <= 1;
     }
 
     /**
@@ -260,4 +285,96 @@ public class EllipsoidRegion extends AbstractRegion {
     public EllipsoidRegion clone() {
         return (EllipsoidRegion) super.clone();
     }
+
+    @Override
+    public void filter(IChunk chunk, Filter filter, ChunkFilterBlock block, IChunkGet get, IChunkSet set) {
+        int bx = chunk.getX() << 4;
+        int bz = chunk.getZ() << 4;
+        int tx = bx + 15;
+        int tz = bz + 15;
+        int cx1 = bx - center.getBlockX();
+        int cx2 = tx - center.getBlockX();
+        int cxMax, cxMin;
+        if (cx1 < cx2) {
+            cxMin = cx1;
+            cxMax = cx2;
+        } else {
+            cxMin = cx2;
+            cxMax = cx1;
+        }
+        int cxMin2 = cxMin * cxMin;
+        int cxMax2 = cxMax * cxMax;
+        int cz1 = bz - center.getBlockZ();
+        int cz2 = tz - center.getBlockZ();
+        int czMax, czMin;
+        if (cz1 < cz2) {
+            czMin = cz1;
+            czMax = cz2;
+        } else {
+            czMin = cz2;
+            czMax = cz1;
+        }
+        int czMin2 = czMin * czMin;
+        int czMax2 = czMax * czMax;
+
+
+        if (sphere) {
+            if (cxMin2 + czMin2 >= radiusLengthSqr) {
+                return;
+            }
+            int diffY2 = radiusLengthSqr - cxMax2 - czMax2;
+            if (diffY2 > 0) {
+                diffy2
+            }
+
+
+
+        } else {
+            if (cxMin2 * inverseRadius.getX() + czMin2 * inverseRadius.getZ() > 1) {
+                return;
+            }
+            partial = cxMax2 * inverseRadius.getX() + czMax2 * inverseRadius.getZ() > 1;
+        }
+        if (partial) {
+
+        } else {
+            // get min y and max y
+            for (int layer = 0; layer < 16; layer++) {
+                // if contains all
+                {
+                    filter(chunk, )
+                }
+            }
+        }
+
+
+        int cy1 = 0 - center.getBlockY();
+        int cy2 = 255 - center.getBlockY();
+        int cyMax, cyMin;
+        if (cy1 < cy2) {
+            cyMin = cy1;
+            cyMax = cy2;
+        } else {
+            cyMin = cy2;
+            cyMax = cy1;
+        }
+        int cyMin2 = cyMin * cyMin;
+        int cyMax2 = cyMax * cyMax;
+
+        boolean containsMin = contains(bx, bz);
+        boolean containsMax = contains(tx, tz);
+        if (containsMin && containsMax) {
+            // set all
+            return;
+        }
+
+
+        for (int layer = 0; layer < 16; layer++) {
+            if (contains())
+        }
+        TODO optimize;
+        int minY = getMinY();
+        int maxY = getMaxY();
+        contains()
+    }
 }

worldedit-core/src/main/java/com/sk89q/worldedit/regions/Region.java

@@ -19,6 +19,12 @@
 
 package com.sk89q.worldedit.regions;
 
+import com.boydti.fawe.beta.ChunkFilterBlock;
+import com.boydti.fawe.beta.Filter;
+import com.boydti.fawe.beta.IChunk;
+import com.boydti.fawe.beta.IChunkGet;
+import com.boydti.fawe.beta.IChunkSet;
+import com.sk89q.worldedit.function.RegionFunction;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.MutableBlockVector3;
@@ -26,12 +32,10 @@ import com.sk89q.worldedit.math.Vector3;
 import com.sk89q.worldedit.world.World;
 
 import javax.annotation.Nullable;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
 
-import static com.sk89q.worldedit.regions.Region.Contains.CHECKED;
-import static com.sk89q.worldedit.regions.Region.Contains.NONE;
-
 /**
  * Represents a physical shape.
  */
@@ -137,7 +141,9 @@ public interface Region extends Iterable<BlockVector3>, Cloneable {
      * @param position the position
      * @return true if contained
      */
-    boolean contains(BlockVector3 position);
+    default boolean contains(BlockVector3 position) {
+        return contains(position.getX(), position.getY(), position.getZ());
+    }
 
     /**
      * Get a list of chunks.
@@ -183,32 +189,62 @@ public interface Region extends Iterable<BlockVector3>, Cloneable {
      */
     List<BlockVector2> polygonize(int maxPoints);
 
-    default Contains getChunkBounds(int X, int Z, MutableBlockVector3 min, MutableBlockVector3 max) {
+    default int getMinY() {
-        BlockVector3 pos1 = getMinimumPoint();
+        return getMinimumPoint().getY();
-        BlockVector3 pos2 = getMaximumPoint();
-        int cx1 = X << 4;
-        int cx2 = cx1 + 15;
-        int cz1 = Z << 4;
-        int cz2 = cz1 + 15;
-
-        int bx = Math.max(cx1, pos1.getX());
-        int bz = Math.max(cz1, pos1.getZ());
-        int tx = Math.min(cx2, pos2.getX());
-        int tz = Math.min(cz2, pos2.getZ());
-
-        min.setComponents(bx & 15, pos1.getY(), bz & 15);
-        max.setComponents(tx & 15, pos2.getY(), tz & 15);
-
-        if (bx > cx2 || bz > cz2 || tx < cx1 || tz < cz1) {
-            return NONE;
-        }
-        return CHECKED;
     }
 
-    enum Contains {
+    default int getMaxY() {
-        FULL,
+        return getMaximumPoint().getY();
-        PARTIAL,
+    }
-        CHECKED,
+
-        NONE;
+    default void filter(final IChunk chunk, final Filter filter, ChunkFilterBlock block, final IChunkGet get, final IChunkSet set) {
+        int minSection = Math.max(0, getMinY() >> 4);
+        int maxSection = Math.min(15, getMaxY() >> 4);
+        for (int layer = minSection; layer <= maxSection; layer++) {
+            if (!get.hasSection(layer) || !filter.appliesLayer(chunk, layer)) return;
+            block = block.init(get, set, layer);
+            block.filter(filter, this);
+        }
+    }
+
+    default void filter(final IChunk chunk, final Filter filter, ChunkFilterBlock block, final IChunkGet get, final IChunkSet set, final int minY, final int maxY) {
+        int minSection = minY >> 4;
+        int maxSection = maxY >> 4;
+        int yStart = (minY & 15);
+        int yEnd = (maxY & 15);
+        if (minSection == maxSection) {
+            filter(chunk, filter, block, get, set, minSection, yStart, yEnd);
+            return;
+        }
+        if (yStart != 0) {
+            filter(chunk, filter, block, get, set, minSection, yStart, 15);
+            minSection++;
+        }
+        if (yEnd != 15) {
+            filter(chunk, filter, block, get, set, minSection, 0, yEnd);
+            maxSection--;
+        }
+        for (int layer = minSection; layer < maxSection; layer++) {
+            filter(chunk, filter, block, get, set, layer);
+        }
+        return;
+    }
+
+    default void filter(final IChunk chunk, final Filter filter, ChunkFilterBlock block, final IChunkGet get, final IChunkSet set, int layer) {
+        if (!get.hasSection(layer) || !filter.appliesLayer(chunk, layer)) return;
+        block = block.init(get, set, layer);
+        block.filter(filter);
+    }
+
+    default void filter(final IChunk chunk, final Filter filter, ChunkFilterBlock block, final IChunkGet get, final IChunkSet set, int layer, int minX, int minY, int minZ, int maxX, int maxY, int maxZ) {
+        if (!get.hasSection(layer) || !filter.appliesLayer(chunk, layer)) return;
+        block = block.init(get, set, layer);
+        block.filter(filter, minX, minY, minZ, maxX, maxY, maxZ);
+    }
+
+    default void filter(final IChunk chunk, final Filter filter, ChunkFilterBlock block, final IChunkGet get, final IChunkSet set, int layer, int yStart, int yEnd) {
+        if (!get.hasSection(layer) || !filter.appliesLayer(chunk, layer)) return;
+        block = block.init(get, set, layer);
+        block.filter(filter, yStart, yEnd);
     }
 }

worldedit-core/src/main/java/com/sk89q/worldedit/regions/RegionIntersection.java

@@ -19,16 +19,8 @@
 
 package com.sk89q.worldedit.regions;
 
-import static com.google.common.base.Preconditions.checkArgument;
-import static com.google.common.base.Preconditions.checkNotNull;
-import static com.sk89q.worldedit.regions.Region.Contains.CHECKED;
-import static com.sk89q.worldedit.regions.Region.Contains.FULL;
-import static com.sk89q.worldedit.regions.Region.Contains.NONE;
-import static com.sk89q.worldedit.regions.Region.Contains.PARTIAL;
-
 import com.google.common.collect.Iterators;
 import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.world.World;
 
 import java.util.ArrayList;
@@ -36,6 +28,9 @@ import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+
 /**
  * An intersection of several other regions. Any location that is contained in one
  * of the child regions is considered as contained by this region.

worldedit-core/src/main/java/com/sk89q/worldedit/session/request/RequestSelection.java

@@ -148,11 +148,6 @@ public class RequestSelection implements Region {
         return getRegion().polygonize(maxPoints);
     }
 
-    @Override
-    public Contains getChunkBounds(int X, int Z, MutableBlockVector3 min, MutableBlockVector3 max) {
-        return getRegion().getChunkBounds(X, Z, min, max);
-    }
-
     @Override
     public Iterator<BlockVector3> iterator() {
         return getRegion().iterator();