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/*
* Copyright 2009 Phil Burk, Mobileer Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.jsyn.unitgen;
public class TestRamps extends NonRealTimeTestCase {
public void viewContinuousRamp(double duration, double startValue, double targetValue)
throws InterruptedException {
ContinuousRamp ramp = new ContinuousRamp();
synthesisEngine.add(ramp);
ramp.current.set(startValue);
ramp.input.set(startValue);
ramp.time.set(duration);
synthesisEngine.setRealTime(false);
synthesisEngine.start();
ramp.start();
synthesisEngine.sleepUntil(synthesisEngine.getCurrentTime() + 0.01);
ramp.input.set(targetValue);
double time = synthesisEngine.getCurrentTime();
int numLoops = 20;
double increment = duration / numLoops;
for (int i = 0; i < (numLoops + 1); i++) {
double value = ramp.output.getValue();
System.out.printf("i = %d, t = %9.5f, value = %8.4f\n", i, time, value);
time += increment;
synthesisEngine.sleepUntil(time);
}
synthesisEngine.stop();
}
public void checkContinuousRamp(double duration, double startValue, double targetValue)
throws InterruptedException {
ContinuousRamp ramp = new ContinuousRamp();
synthesisEngine.add(ramp);
ramp.current.set(startValue);
ramp.input.set(startValue);
ramp.time.set(duration);
synthesisEngine.setRealTime(false);
synthesisEngine.start();
ramp.start();
synthesisEngine.sleepUntil(synthesisEngine.getCurrentTime() + 0.01);
assertEquals("start flat", ramp.input.getValue(), ramp.output.getValue());
ramp.input.set(targetValue);
double startTime = synthesisEngine.getCurrentTime();
synthesisEngine.sleepUntil(startTime + (duration / 2));
assertEquals("ramping up", (targetValue + startValue) / 2.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + duration);
assertEquals("ramping up", targetValue, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + duration + 0.1);
assertEquals("flat again", targetValue, ramp.output.getValue());
synthesisEngine.stop();
}
public void testContinuousRamp() throws InterruptedException {
viewContinuousRamp(4.0, 0.0, 1.0);
}
public void testExponentialRamp() throws InterruptedException {
ExponentialRamp ramp = new ExponentialRamp();
synthesisEngine.add(ramp);
double duration = 0.3;
ramp.current.set(1.0);
ramp.input.set(1.0);
ramp.time.set(duration);
synthesisEngine.start();
ramp.start();
synthesisEngine.sleepUntil(synthesisEngine.getCurrentTime() + 0.01);
assertEquals("start flat", ramp.input.getValue(), ramp.output.getValue());
ramp.input.set(8.0);
double startTime = synthesisEngine.getCurrentTime();
synthesisEngine.sleepUntil(startTime + 0.1);
assertEquals("ramping up", 2.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.2);
assertEquals("ramping up", 4.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.3);
assertEquals("ramping up", 8.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.4);
assertEquals("flat again", 8.0, ramp.output.getValue());
}
public void testLinearRamp() throws InterruptedException {
LinearRamp ramp = new LinearRamp();
synthesisEngine.add(ramp);
double duration = 0.4;
ramp.current.set(0.0);
ramp.input.set(0.0);
ramp.time.set(duration);
synthesisEngine.start();
ramp.start();
synthesisEngine.sleepUntil(synthesisEngine.getCurrentTime() + 0.01);
assertEquals("start flat", ramp.input.getValue(), ramp.output.getValue());
ramp.input.set(8.0);
double startTime = synthesisEngine.getCurrentTime();
synthesisEngine.sleepUntil(startTime + 0.1);
assertEquals("ramping up", 2.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.2);
assertEquals("ramping up", 4.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.3);
assertEquals("ramping up", 6.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.4);
assertEquals("flat again", 8.0, ramp.output.getValue());
}
public void testExponentialRampConnected() throws InterruptedException {
ExponentialRamp ramp = new ExponentialRamp();
PassThrough pass = new PassThrough();
synthesisEngine.add(ramp);
synthesisEngine.add(pass);
double duration = 0.3;
ramp.current.set(1.0);
pass.input.set(1.0);
ramp.time.set(duration);
// Send value through a connected unit.
pass.input.set(1.0);
pass.output.connect(ramp.input);
synthesisEngine.start();
ramp.start();
synthesisEngine.sleepUntil(synthesisEngine.getCurrentTime() + 0.01);
assertEquals("start flat", ramp.input.getValue(), ramp.output.getValue());
pass.input.set(8.0);
double startTime = synthesisEngine.getCurrentTime();
synthesisEngine.sleepUntil(startTime + 0.1);
assertEquals("ramping up", 2.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.2);
assertEquals("ramping up", 4.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.3);
assertEquals("ramping up", 8.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.4);
assertEquals("flat again", 8.0, ramp.output.getValue());
}
public void testLinearRampConnected() throws InterruptedException {
LinearRamp ramp = new LinearRamp();
PassThrough pass = new PassThrough();
synthesisEngine.add(ramp);
synthesisEngine.add(pass);
double duration = 0.4;
ramp.current.set(0.0);
pass.input.set(0.0);
ramp.time.set(duration);
// Send value through a connected unit.
pass.input.set(0.0);
pass.output.connect(ramp.input);
synthesisEngine.start();
ramp.start();
synthesisEngine.sleepUntil(synthesisEngine.getCurrentTime() + 0.01);
assertEquals("start flat", ramp.input.getValue(), ramp.output.getValue());
pass.input.set(8.0);
double startTime = synthesisEngine.getCurrentTime();
synthesisEngine.sleepUntil(startTime + 0.1);
assertEquals("ramping up", 2.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.2);
assertEquals("ramping up", 4.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.3);
assertEquals("ramping up", 6.0, ramp.output.getValue(), 0.01);
synthesisEngine.sleepUntil(startTime + 0.4);
assertEquals("flat again", 8.0, ramp.output.getValue());
}
}
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