Quad.java revision 65953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9 
1/*
2 * Copyright (C) 2011 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
17
18package android.filterfw.geometry;
19
20import android.filterfw.geometry.Point;
21
22import java.lang.Float;
23import java.util.Arrays;
24import java.util.Collections;
25import java.util.List;
26
27/**
28 * @hide
29 */
30public class Quad {
31
32    public Point p0;
33    public Point p1;
34    public Point p2;
35    public Point p3;
36
37    public Quad() {
38    }
39
40    public Quad(Point p0, Point p1, Point p2, Point p3) {
41        this.p0 = p0;
42        this.p1 = p1;
43        this.p2 = p2;
44        this.p3 = p3;
45    }
46
47    public boolean IsInUnitRange() {
48        return p0.IsInUnitRange() &&
49               p1.IsInUnitRange() &&
50               p2.IsInUnitRange() &&
51               p3.IsInUnitRange();
52    }
53
54    public Quad translated(Point t) {
55        return new Quad(p0.plus(t), p1.plus(t), p2.plus(t), p3.plus(t));
56    }
57
58    public Quad translated(float x, float y) {
59        return new Quad(p0.plus(x, y), p1.plus(x, y), p2.plus(x, y), p3.plus(x, y));
60    }
61
62    public Quad scaled(float s) {
63        return new Quad(p0.times(s), p1.times(s), p2.times(s), p3.times(s));
64    }
65
66    public Quad scaled(float x, float y) {
67        return new Quad(p0.mult(x, y), p1.mult(x, y), p2.mult(x, y), p3.mult(x, y));
68    }
69
70    public Rectangle boundingBox() {
71        List<Float> xs = Arrays.asList(p0.x, p1.x, p2.x, p3.x);
72        List<Float> ys = Arrays.asList(p0.y, p1.y, p2.y, p3.y);
73        float x0 = Collections.min(xs);
74        float y0 = Collections.min(ys);
75        float x1 = Collections.max(xs);
76        float y1 = Collections.max(ys);
77        return new Rectangle(x0, y0, x1 - x0, y1 - y0);
78    }
79
80    public float getBoundingWidth() {
81        List<Float> xs = Arrays.asList(p0.x, p1.x, p2.x, p3.x);
82        return Collections.max(xs) - Collections.min(xs);
83    }
84
85    public float getBoundingHeight() {
86        List<Float> ys = Arrays.asList(p0.y, p1.y, p2.y, p3.y);
87        return Collections.max(ys) - Collections.min(ys);
88    }
89
90    @Override
91    public String toString() {
92        return "{" + p0 + ", " + p1 + ", " + p2 + ", " + p3 + "}";
93    }
94}
95