graphics/java/android/graphics/Point.java

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.graphics;


/**
 * Point holds two integer coordinates
 */
public class Point {
    public int x;
    public int y;

    public Point() {}

    public Point(int x, int y) {
        this.x = x;
        this.y = y;
    }

    public Point(Point src) {
        this.x = src.x;
        this.y = src.y;
    }

    /**
     * Set the point's x and y coordinates
     */
    public void set(int x, int y) {
        this.x = x;
        this.y = y;
    }

    /**
     * Negate the point's coordinates
     */
    public final void negate() {
        x = -x;
        y = -y;
    }

    /**
     * Offset the point's coordinates by dx, dy
     */
    public final void offset(int dx, int dy) {
        x += dx;
        y += dy;
    }

    /**
     * Returns true if the point's coordinates equal (x,y)
     */
    public final boolean equals(int x, int y) {
        return this.x == x && this.y == y;
    }

    @Override public boolean equals(Object o) {
        if (o instanceof Point) {
            Point p = (Point) o;
            return this.x == p.x && this.y == p.y;
        }
        return false;
    }

    @Override public int hashCode() {
        return x * 32713 + y;
    }

    @Override public String toString() {
        return "Point(" + x + ", " + y+ ")";
    }
}