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WavesTest.java
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37 lines (34 loc) · 1.32 KB
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package nodebox.util;
import nodebox.util.waves.*;
import junit.framework.TestCase;
public class WavesTest extends TestCase {
public void testConvertFromMinMax() {
AbstractWave w = SineWave.from(-20, 20, 100);
assertEquals(20f, w.getAmplitude());
assertEquals(0f, w.getOffset());
w = SineWave.from(-25, 35, 100);
assertEquals(30f, w.getAmplitude());
assertEquals(5f, w.getOffset());
w = SineWave.from(-35, 25, 100);
assertEquals(30f, w.getAmplitude());
assertEquals(-5f, w.getOffset());
assertEquals(100f, w.getPeriod());
w = SawtoothWave.from(-20, 20, 100);
assertEquals(20f, w.getAmplitude());
assertEquals(0f, w.getOffset());
w = SquareWave.from(-25, 35, 100);
assertEquals(30f, w.getAmplitude());
assertEquals(5f, w.getOffset());
w = TriangleWave.from(-35, 25, 100);
assertEquals(30f, w.getAmplitude());
assertEquals(-5f, w.getOffset());
}
public void testSineWave() {
SineWave w = new SineWave(120, 20);
assertEquals(0f, w.getValueAt(0), 0.0001);
assertEquals(-20f, w.getValueAt(30), 0.0001);
assertEquals(0f, w.getValueAt(60), 0.0001);
assertEquals(20f, w.getValueAt(90), 0.0001);
assertEquals(0f, w.getValueAt(120), 0.0001);
}
}