Add missing Dir file

src/main/java/com/cricketcraft/chisel/api/client/Dir.java

@@ -0,0 +1,73 @@
+package com.cricketcraft.chisel.api.client;
+
+import net.minecraft.block.Block;
+import net.minecraft.world.IBlockAccess;
+import net.minecraftforge.common.util.ForgeDirection;
+
+import static net.minecraftforge.common.util.ForgeDirection.*;
+
+public enum Dir {
+	
+	TOP(UP), 
+	TOP_RIGHT(UP, EAST), 
+	RIGHT(EAST), 
+	BOTTOM_RIGHT(DOWN, EAST), 
+	BOTTOM(DOWN), 
+	BOTTOM_LEFT(DOWN, WEST), 
+	LEFT(WEST), 
+	TOP_LEFT(UP, WEST);
+	// @formatter:on
+
+	private static final ForgeDirection NORMAL = SOUTH;
+	public static final Dir[] VALUES = values();
+
+	private ForgeDirection[] dirs;
+
+	private Dir(ForgeDirection... dirs) {
+		this.dirs = dirs;
+	}
+
+	public boolean isConnected(CTM inst, IBlockAccess world, int x, int y, int z, int sideIdx, Block block, int meta) {
+		ForgeDirection side = getOrientation(sideIdx);
+		ForgeDirection[] dirs = getNormalizedDirs(side);
+		for (ForgeDirection dir : dirs) {
+			x += dir.offsetX;
+			y += dir.offsetY;
+			z += dir.offsetZ;
+		}
+		return inst.isConnected(world, x, y, z, side, block, meta);
+	}
+
+	private ForgeDirection[] getNormalizedDirs(ForgeDirection normal) {
+		if (normal == NORMAL) {
+			return dirs;
+		} else if (normal == NORMAL.getOpposite()) {
+			// If this is the opposite direction of the default normal, we
+			// need to mirror the dirs
+			// A mirror version does not affect y+ and y- so we ignore those
+			ForgeDirection[] ret = new ForgeDirection[dirs.length];
+			for (int i = 0; i < ret.length; i++) {
+				ret[i] = dirs[i].offsetY != 0 ? dirs[i] : dirs[i].getOpposite();
+			}
+			return ret;
+		} else {
+			ForgeDirection axis = null;
+			// Next, we need different a different rotation axis depending
+			// on if this is up/down or not
+			if (normal.offsetY == 0) {
+				// If it is not up/down, pick either the left or right-hand
+				// rotation
+				axis = normal == NORMAL.getRotation(UP) ? UP : DOWN;
+			} else {
+				// If it is up/down, pick either the up or down rotation.
+				axis = normal == UP ? NORMAL.getRotation(DOWN) : NORMAL.getRotation(UP);
+			}
+			ForgeDirection[] ret = new ForgeDirection[dirs.length];
+			// Finally apply all the rotations
+			for (int i = 0; i < ret.length; i++) {
+				ret[i] = dirs[i].getRotation(axis);
+			}
+			return ret;
+		}
+	}
+}