Refactor vector system to be cleaner

- Move Vector, etc. into `.math` package
- Drop many methods that will be auto-promoted anyways, eg. with
`divide(int)` and `divide(double)` the first is now gone.
- Take Block vectors into their own class hierarchy
- Make it clear throughout the API what takes blockvectors
- many more improvements

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/BlockArrayClipboard.java

@@ -21,16 +21,16 @@ package com.sk89q.worldedit.extent.clipboard;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
-import com.sk89q.worldedit.Vector;
-import com.sk89q.worldedit.Vector2D;
 import com.sk89q.worldedit.WorldEditException;
-import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.function.operation.Operation;
+import com.sk89q.worldedit.math.BlockVector2;
+import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.biome.BaseBiome;
+import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockTypes;
@@ -48,7 +48,7 @@ import javax.annotation.Nullable;
 public class BlockArrayClipboard implements Clipboard {
 
     private final Region region;
-    private Vector origin;
+    private BlockVector3 origin;
     private final BlockStateHolder[][][] blocks;
     private final List<ClipboardEntity> entities = new ArrayList<>();
 
@@ -64,7 +64,7 @@ public class BlockArrayClipboard implements Clipboard {
         this.region = region.clone();
         this.origin = region.getMinimumPoint();
 
-        Vector dimensions = getDimensions();
+        BlockVector3 dimensions = getDimensions();
         blocks = new BlockStateHolder[dimensions.getBlockX()][dimensions.getBlockY()][dimensions.getBlockZ()];
     }
 
@@ -74,27 +74,27 @@ public class BlockArrayClipboard implements Clipboard {
     }
 
     @Override
-    public Vector getOrigin() {
+    public BlockVector3 getOrigin() {
         return origin;
     }
 
     @Override
-    public void setOrigin(Vector origin) {
+    public void setOrigin(BlockVector3 origin) {
         this.origin = origin;
     }
 
     @Override
-    public Vector getDimensions() {
+    public BlockVector3 getDimensions() {
         return region.getMaximumPoint().subtract(region.getMinimumPoint()).add(1, 1, 1);
     }
 
     @Override
-    public Vector getMinimumPoint() {
+    public BlockVector3 getMinimumPoint() {
         return region.getMinimumPoint();
     }
 
     @Override
-    public Vector getMaximumPoint() {
+    public BlockVector3 getMaximumPoint() {
         return region.getMaximumPoint();
     }
 
@@ -102,7 +102,7 @@ public class BlockArrayClipboard implements Clipboard {
     public List<? extends Entity> getEntities(Region region) {
         List<Entity> filtered = new ArrayList<>();
         for (Entity entity : entities) {
-            if (region.contains(entity.getLocation().toVector())) {
+            if (region.contains(entity.getLocation().toVector().toBlockPoint())) {
                 filtered.add(entity);
             }
         }
@@ -123,9 +123,9 @@ public class BlockArrayClipboard implements Clipboard {
     }
 
     @Override
-    public BlockState getBlock(Vector position) {
+    public BlockState getBlock(BlockVector3 position) {
         if (region.contains(position)) {
-            Vector v = position.subtract(region.getMinimumPoint());
+            BlockVector3 v = position.subtract(region.getMinimumPoint());
             BlockStateHolder block = blocks[v.getBlockX()][v.getBlockY()][v.getBlockZ()];
             if (block != null) {
                 return block.toImmutableState();
@@ -136,9 +136,9 @@ public class BlockArrayClipboard implements Clipboard {
     }
 
     @Override
-    public BaseBlock getFullBlock(Vector position) {
+    public BaseBlock getFullBlock(BlockVector3 position) {
         if (region.contains(position)) {
-            Vector v = position.subtract(region.getMinimumPoint());
+            BlockVector3 v = position.subtract(region.getMinimumPoint());
             BlockStateHolder block = blocks[v.getBlockX()][v.getBlockY()][v.getBlockZ()];
             if (block != null) {
                 return block.toBaseBlock();
@@ -149,9 +149,9 @@ public class BlockArrayClipboard implements Clipboard {
     }
 
     @Override
-    public boolean setBlock(Vector position, BlockStateHolder block) throws WorldEditException {
+    public boolean setBlock(BlockVector3 position, BlockStateHolder block) throws WorldEditException {
         if (region.contains(position)) {
-            Vector v = position.subtract(region.getMinimumPoint());
+            BlockVector3 v = position.subtract(region.getMinimumPoint());
             blocks[v.getBlockX()][v.getBlockY()][v.getBlockZ()] = block;
             return true;
         } else {
@@ -160,12 +160,12 @@ public class BlockArrayClipboard implements Clipboard {
     }
 
     @Override
-    public BaseBiome getBiome(Vector2D position) {
+    public BaseBiome getBiome(BlockVector2 position) {
         return new BaseBiome(0);
     }
 
     @Override
-    public boolean setBiome(Vector2D position, BaseBiome biome) {
+    public boolean setBiome(BlockVector2 position, BaseBiome biome) {
         return false;
     }