1/*
2 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/* @test
25   @summary Test ModelStandardTransform transform method
26   @modules java.desktop/com.sun.media.sound
27*/
28
29import com.sun.media.sound.ModelStandardTransform;
30
31public class TransformAbsolute {
32
33    private static boolean checkLinearity(ModelStandardTransform transform)
34    {
35        double lastx = 0;
36        for (int p = 0; p < 2; p++)
37        for (int d = 0; d < 2; d++)
38        for (double i = 0; i < 1.0; i+=0.001) {
39            if(p == 0)
40                transform.setPolarity(ModelStandardTransform.POLARITY_UNIPOLAR);
41            else
42                transform.setPolarity(ModelStandardTransform.POLARITY_BIPOLAR);
43            if(d == 0)
44                transform.setDirection(ModelStandardTransform.DIRECTION_MIN2MAX);
45            else
46                transform.setDirection(ModelStandardTransform.DIRECTION_MAX2MIN);
47            double x = transform.transform(i);
48            if(i == 0)
49                lastx = x;
50            else
51            {
52                if(lastx - x > 0.2) return false;
53                lastx = x;
54            }
55        }
56        return true;
57    }
58
59    private static void assertTrue(boolean value) throws Exception
60    {
61        if(!value)
62            throw new RuntimeException("assertTrue fails!");
63
64    }
65
66    public static void main(String[] args) throws Exception {
67        ModelStandardTransform transform = new ModelStandardTransform();
68        transform.setTransform(ModelStandardTransform.TRANSFORM_ABSOLUTE);
69        assertTrue(Math.abs(transform.transform(0.2f) - 0.2f) < 0.0001f);
70        assertTrue(Math.abs(transform.transform(-0.8f) - 0.8f) < 0.0001f);
71        assertTrue(checkLinearity(transform));
72    }
73}
74