| /* |
| * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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| */ |
| |
| /* @test |
| @summary Test ModelStandardTransform transform method |
| @modules java.desktop/com.sun.media.sound |
| */ |
| |
| import com.sun.media.sound.ModelStandardTransform; |
| |
| public class TransformConcave { |
| |
| private static boolean checkLinearity(ModelStandardTransform transform) |
| { |
| double lastx = 0; |
| for (int p = 0; p < 2; p++) |
| for (int d = 0; d < 2; d++) |
| for (double i = 0; i < 1.0; i+=0.001) { |
| if(p == 0) |
| transform.setPolarity(ModelStandardTransform.POLARITY_UNIPOLAR); |
| else |
| transform.setPolarity(ModelStandardTransform.POLARITY_BIPOLAR); |
| if(d == 0) |
| transform.setDirection(ModelStandardTransform.DIRECTION_MIN2MAX); |
| else |
| transform.setDirection(ModelStandardTransform.DIRECTION_MAX2MIN); |
| double x = transform.transform(i); |
| if(i == 0) |
| lastx = x; |
| else |
| { |
| if(lastx - x > 0.2) return false; |
| lastx = x; |
| } |
| } |
| return true; |
| } |
| |
| private static void assertTrue(boolean value) throws Exception |
| { |
| if(!value) |
| throw new RuntimeException("assertTrue fails!"); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| ModelStandardTransform transform = new ModelStandardTransform(); |
| transform.setTransform(ModelStandardTransform.TRANSFORM_CONCAVE); |
| assertTrue(checkLinearity(transform)); |
| |
| transform.setDirection(ModelStandardTransform.DIRECTION_MIN2MAX); |
| transform.setPolarity(ModelStandardTransform.POLARITY_UNIPOLAR); |
| assertTrue(Math.abs(transform.transform(0.0f) - 0.0f) < 0.0001f); |
| assertTrue(transform.transform(0.5f) < 0.5f); |
| assertTrue(Math.abs(transform.transform(1.0f) - 1.0f) < 0.0001f); |
| |
| transform.setDirection(ModelStandardTransform.DIRECTION_MAX2MIN); |
| transform.setPolarity(ModelStandardTransform.POLARITY_UNIPOLAR); |
| assertTrue(Math.abs(transform.transform(1.0f) - 0.0f) < 0.0001f); |
| assertTrue(transform.transform(0.5f) < 0.5f); |
| assertTrue(Math.abs(transform.transform(0.0f) - 1.0f) < 0.0001f); |
| |
| transform.setDirection(ModelStandardTransform.DIRECTION_MIN2MAX); |
| transform.setPolarity(ModelStandardTransform.POLARITY_BIPOLAR); |
| assertTrue(Math.abs(transform.transform(0.0f) + 1.0f) < 0.0001f); |
| assertTrue(transform.transform(0.25f) > -0.5f); |
| assertTrue(Math.abs(transform.transform(0.5f) - 0.0f) < 0.0001f); |
| assertTrue(transform.transform(0.75f) < 0.5f); |
| assertTrue(Math.abs(transform.transform(1.0f) - 1.0f) < 0.0001f); |
| |
| transform.setDirection(ModelStandardTransform.DIRECTION_MAX2MIN); |
| transform.setPolarity(ModelStandardTransform.POLARITY_BIPOLAR); |
| assertTrue(Math.abs(transform.transform(1.0f) + 1.0f) < 0.0001f); |
| assertTrue(transform.transform(0.75f) > -0.5f); |
| assertTrue(Math.abs(transform.transform(0.50f) - 0.0f) < 0.0001f); |
| assertTrue(transform.transform(0.25f) < 0.5f); |
| assertTrue(Math.abs(transform.transform(0.0f) - 1.0f) < 0.0001f); |
| } |
| } |