Vector2m.java

package wecui.util;

/**
 * A version of Vector2 that can be modified.
 * 
 * @author yetanotherx
 */
public class Vector2m extends Vector2 {

    public Vector2m() {
    }

    public Vector2m(Double x, Double y) {
        super(x, y);
    }

    public Vector2m(float x, float y) {
        super(x, y);
    }

    public Vector2m(Vector2 original) {
        super(original);
    }

    /**
     * Sets the X coordinate
     *
     * @param x The x coordinate
     */
    public void setX(float x) {
        this.x = x;
    }

    /**
     * Sets the Y coordinate
     *
     * @param y The Y coordinate
     */
    public void setY(float y) {
        this.z = y;
    }

    @Override
    public Vector2 add(Vector2 that) {
        x += that.x;
        z += that.z;
        return this;
    }

    @Override
    public Vector2 subtract(Vector2 that) {
        x -= that.x;
        z -= that.z;
        return this;
    }

    @Override
    public Vector2 scale(float scale) {
        x *= scale;
        z *= scale;
        return this;
    }

    public Vector2 cross(Vector2 that) {
        float tmp = z;
        z = -x;
        x = tmp;
        return this;
    }

    /**
     * Rounds the X and Y values of this Vector2 up to 
     * the nearest integer value. 
     * 
     * @return 
     */
    public Vector2 ceil() {
        x = (float) Math.ceil(x);
        z = (float) Math.ceil(z);
        return this;
    }

    /**
     * Rounds the X and Y values of this Vector2 down to 
     * the nearest integer value. 
     * 
     * @return 
     */
    public Vector2 floor() {
        x = (float) Math.floor(x);
        z = (float) Math.floor(z);
        return this;
    }

    /**
     * Rounds the X and Y values of this Vector2 to 
     * the nearest integer value. 
     * 
     * @return 
     */
    public Vector2 round() {
        x = Math.round(x);
        z = Math.round(z);
        return this;
    }

    /**
     * Sets the X and Y values of this Vector2 to their
     * absolute value.
     * 
     * @return 
     */
    public Vector2 abs() {
        x = Math.abs(x);
        z = Math.abs(z);
        return this;
    }

    @Override
    public Vector2 normalize() {
        float length = this.length();
        x *= 1 / length;
        z *= 1 / length;
        return this;
    }
}