eaglercraft-1.8/sources/main/java/net/optifine/BlockDir.java

package net.optifine;

import net.minecraft.util.BlockPos;
import net.minecraft.util.EnumFacing;

public enum BlockDir {
	DOWN(EnumFacing.DOWN), UP(EnumFacing.UP), NORTH(EnumFacing.NORTH), SOUTH(EnumFacing.SOUTH), WEST(EnumFacing.WEST),
	EAST(EnumFacing.EAST), NORTH_WEST(EnumFacing.NORTH, EnumFacing.WEST), NORTH_EAST(EnumFacing.NORTH, EnumFacing.EAST),
	SOUTH_WEST(EnumFacing.SOUTH, EnumFacing.WEST), SOUTH_EAST(EnumFacing.SOUTH, EnumFacing.EAST),
	DOWN_NORTH(EnumFacing.DOWN, EnumFacing.NORTH), DOWN_SOUTH(EnumFacing.DOWN, EnumFacing.SOUTH),
	UP_NORTH(EnumFacing.UP, EnumFacing.NORTH), UP_SOUTH(EnumFacing.UP, EnumFacing.SOUTH),
	DOWN_WEST(EnumFacing.DOWN, EnumFacing.WEST), DOWN_EAST(EnumFacing.DOWN, EnumFacing.EAST),
	UP_WEST(EnumFacing.UP, EnumFacing.WEST), UP_EAST(EnumFacing.UP, EnumFacing.EAST);

	private EnumFacing facing1;
	private EnumFacing facing2;

	private BlockDir(EnumFacing facing1) {
		this.facing1 = facing1;
	}

	private BlockDir(EnumFacing facing1, EnumFacing facing2) {
		this.facing1 = facing1;
		this.facing2 = facing2;
	}

	public EnumFacing getFacing1() {
		return this.facing1;
	}

	public EnumFacing getFacing2() {
		return this.facing2;
	}

	BlockPos offset(BlockPos pos) {
		pos = pos.offset(this.facing1, 1);

		if (this.facing2 != null) {
			pos = pos.offset(this.facing2, 1);
		}

		return pos;
	}

	public int getOffsetX() {
		int i = this.facing1.getFrontOffsetX();

		if (this.facing2 != null) {
			i += this.facing2.getFrontOffsetX();
		}

		return i;
	}

	public int getOffsetY() {
		int i = this.facing1.getFrontOffsetY();

		if (this.facing2 != null) {
			i += this.facing2.getFrontOffsetY();
		}

		return i;
	}

	public int getOffsetZ() {
		int i = this.facing1.getFrontOffsetZ();

		if (this.facing2 != null) {
			i += this.facing2.getFrontOffsetZ();
		}

		return i;
	}

	public boolean isDouble() {
		return this.facing2 != null;
	}
}