829N/A/*
2362N/A * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
829N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
829N/A *
829N/A * This code is free software; you can redistribute it and/or modify it
829N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
829N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
829N/A *
829N/A * This code is distributed in the hope that it will be useful, but WITHOUT
829N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
829N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
829N/A * version 2 for more details (a copy is included in the LICENSE file that
829N/A * accompanied this code).
829N/A *
829N/A * You should have received a copy of the GNU General Public License version
829N/A * 2 along with this work; if not, write to the Free Software Foundation,
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829N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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2362N/A * questions.
829N/A */
829N/A
829N/A/* @test
829N/A @summary Test ModelStandardTransform transform method */
829N/A
829N/Aimport com.sun.media.sound.ModelStandardTransform;
829N/A
829N/Apublic class TransformConcave {
829N/A
829N/A private static boolean checkLinearity(ModelStandardTransform transform)
829N/A {
829N/A double lastx = 0;
829N/A for (int p = 0; p < 2; p++)
829N/A for (int d = 0; d < 2; d++)
829N/A for (double i = 0; i < 1.0; i+=0.001) {
829N/A if(p == 0)
829N/A transform.setPolarity(ModelStandardTransform.POLARITY_UNIPOLAR);
829N/A else
829N/A transform.setPolarity(ModelStandardTransform.POLARITY_BIPOLAR);
829N/A if(d == 0)
829N/A transform.setDirection(ModelStandardTransform.DIRECTION_MIN2MAX);
829N/A else
829N/A transform.setDirection(ModelStandardTransform.DIRECTION_MAX2MIN);
829N/A double x = transform.transform(i);
829N/A if(i == 0)
829N/A lastx = x;
829N/A else
829N/A {
829N/A if(lastx - x > 0.2) return false;
829N/A lastx = x;
829N/A }
829N/A }
829N/A return true;
829N/A }
829N/A
829N/A private static void assertTrue(boolean value) throws Exception
829N/A {
829N/A if(!value)
829N/A throw new RuntimeException("assertTrue fails!");
829N/A }
829N/A
829N/A public static void main(String[] args) throws Exception {
829N/A ModelStandardTransform transform = new ModelStandardTransform();
829N/A transform.setTransform(ModelStandardTransform.TRANSFORM_CONCAVE);
829N/A assertTrue(checkLinearity(transform));
829N/A
829N/A transform.setDirection(ModelStandardTransform.DIRECTION_MIN2MAX);
829N/A transform.setPolarity(ModelStandardTransform.POLARITY_UNIPOLAR);
829N/A assertTrue(Math.abs(transform.transform(0.0f) - 0.0f) < 0.0001f);
829N/A assertTrue(transform.transform(0.5f) < 0.5f);
829N/A assertTrue(Math.abs(transform.transform(1.0f) - 1.0f) < 0.0001f);
829N/A
829N/A transform.setDirection(ModelStandardTransform.DIRECTION_MAX2MIN);
829N/A transform.setPolarity(ModelStandardTransform.POLARITY_UNIPOLAR);
829N/A assertTrue(Math.abs(transform.transform(1.0f) - 0.0f) < 0.0001f);
829N/A assertTrue(transform.transform(0.5f) < 0.5f);
829N/A assertTrue(Math.abs(transform.transform(0.0f) - 1.0f) < 0.0001f);
829N/A
829N/A transform.setDirection(ModelStandardTransform.DIRECTION_MIN2MAX);
829N/A transform.setPolarity(ModelStandardTransform.POLARITY_BIPOLAR);
829N/A assertTrue(Math.abs(transform.transform(0.0f) + 1.0f) < 0.0001f);
829N/A assertTrue(transform.transform(0.25f) > -0.5f);
829N/A assertTrue(Math.abs(transform.transform(0.5f) - 0.0f) < 0.0001f);
829N/A assertTrue(transform.transform(0.75f) < 0.5f);
829N/A assertTrue(Math.abs(transform.transform(1.0f) - 1.0f) < 0.0001f);
829N/A
829N/A transform.setDirection(ModelStandardTransform.DIRECTION_MAX2MIN);
829N/A transform.setPolarity(ModelStandardTransform.POLARITY_BIPOLAR);
829N/A assertTrue(Math.abs(transform.transform(1.0f) + 1.0f) < 0.0001f);
829N/A assertTrue(transform.transform(0.75f) > -0.5f);
829N/A assertTrue(Math.abs(transform.transform(0.50f) - 0.0f) < 0.0001f);
829N/A assertTrue(transform.transform(0.25f) < 0.5f);
829N/A assertTrue(Math.abs(transform.transform(0.0f) - 1.0f) < 0.0001f);
829N/A }
829N/A}