package speiger.src.coreengine.math.vector.quaternion;

import java.util.Arrays;

public class QuaternionImmutable implements Quaternion
{
	final float x;
	final float y;
	final float z;
	final float w;
	
	public QuaternionImmutable()
	{
		x = 0F;
		y = 0F;
		z = 0F;
		w = 1F;
	}
	
	public QuaternionImmutable(float x, float y, float z, float w)
	{
		this.x = x;
		this.y = y;
		this.z = z;
		this.w = w;
	}

	@Override
	public Quaternion setX(float x)
	{
		return this.x == x ? this : set(x, y, z, w);
	}
	
	@Override
	public Quaternion setY(float y)
	{
		return this.y == y ? this : set(x, y, z, w);
	}
	
	@Override
	public Quaternion setZ(float z)
	{
		return this.z == z ? this : set(x, y, z, w);
	}
	
	@Override
	public Quaternion setW(float w)
	{
		return this.w == w ? this : set(x, y, z, w);
	}
	
	@Override
	public float getX()
	{
		return x;
	}
	
	@Override
	public float getY()
	{
		return y;
	}
	
	@Override
	public float getZ()
	{
		return z;
	}
	
	@Override
	public float getW()
	{
		return w;
	}
	
	@Override
	public Quaternion set(float x, float y, float z, float w)
	{
		return this.x == x && this.y == y && this.z == z && this.w == w ? this : Quaternion.newQuat(x, y, z, w);
	}
	
	@Override
	public Quaternion copy()
	{
		return Quaternion.newQuat(this);
	}
	
	@Override
	public boolean isMutable()
	{
		return false;
	}

	@Override
	public int hashCode()
	{
		return Arrays.hashCode(new float[]{x,y,z,w});
	}
	
	@Override
	public boolean equals(Object obj)
	{
		if(obj instanceof Quaternion)
		{
			Quaternion other = (Quaternion)obj;
			return other.getX() == x && other.getY() == y && other.getZ() == z && other.getW() == w;
		}
		return false;
	}
	
	@Override
	public String toString()
	{
		return "Quaternion[x="+x+", y="+y+", z="+z+", w="+w+"]";
	}
}