Point.java revision 54b6cfa9a9e5b861a9930af873580d6dc20f773c 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.graphics;
18
19
20/**
21 * Point holds two integer coordinates
22 */
23public class Point {
24    public int x;
25    public int y;
26
27    public Point() {}
28
29    public Point(int x, int y) {
30        this.x = x;
31        this.y = y;
32    }
33
34    public Point(Point src) {
35        this.x = src.x;
36        this.y = src.y;
37    }
38
39    /**
40     * Set the point's x and y coordinates
41     */
42    public void set(int x, int y) {
43        this.x = x;
44        this.y = y;
45    }
46
47    /**
48     * Negate the point's coordinates
49     */
50    public final void negate() {
51        x = -x;
52        y = -y;
53    }
54
55    /**
56     * Offset the point's coordinates by dx, dy
57     */
58    public final void offset(int dx, int dy) {
59        x += dx;
60        y += dy;
61    }
62
63    /**
64     * Returns true if the point's coordinates equal (x,y)
65     */
66    public final boolean equals(int x, int y) {
67        return this.x == x && this.y == y;
68    }
69
70    @Override public boolean equals(Object o) {
71        if (o instanceof Point) {
72            Point p = (Point) o;
73            return this.x == p.x && this.y == p.y;
74        }
75        return false;
76    }
77
78    @Override public int hashCode() {
79        return x * 32713 + y;
80    }
81
82    @Override public String toString() {
83        return "Point(" + x + ", " + y+ ")";
84    }
85}
86