111 lines
3.2 KiB
Haxe
111 lines
3.2 KiB
Haxe
package auratests.utils;
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import kha.simd.Float32x4;
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import utest.Assert;
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import aura.types.AudioBuffer.AudioBufferChannelView;
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import aura.utils.Interpolator.LinearInterpolator;
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class TestLinearInterpolator extends utest.Test {
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static inline var NUM_SAMPLES = 8;
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function test_isInitializedToTargetValue() {
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final interp = new LinearInterpolator(0.0);
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Assert.floatEquals(0.0, interp.currentValue);
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Assert.floatEquals(0.0, interp.lastValue);
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Assert.floatEquals(0.0, interp.targetValue);
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}
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function test_stepSizeIsCorrectForPositiveSteps() {
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final interp = new LinearInterpolator(0.0);
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interp.targetValue = 4.0;
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final stepSize = interp.getLerpStepSize(NUM_SAMPLES);
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Assert.floatEquals(0.5, stepSize);
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}
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function test_stepSizeIsCorrectForNegativeSteps() {
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final interp = new LinearInterpolator(0.0);
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interp.targetValue = -4.0;
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final stepSize = interp.getLerpStepSize(NUM_SAMPLES);
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Assert.floatEquals(-0.5, stepSize);
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}
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function test_stepsReachTargetValue() {
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final interp = new LinearInterpolator(0.0);
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interp.targetValue = 4.0;
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final stepSize = interp.getLerpStepSize(NUM_SAMPLES);
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for (_ in 0...NUM_SAMPLES) {
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interp.currentValue += stepSize;
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}
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Assert.floatEquals(interp.targetValue, interp.currentValue);
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}
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function test_updateLastUpdatesLastAndCurrentValue() {
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final interp = new LinearInterpolator(0.0);
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interp.targetValue = 4.0;
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interp.updateLast();
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Assert.floatEquals(interp.targetValue, interp.lastValue);
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Assert.floatEquals(interp.targetValue, interp.currentValue);
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}
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function test_getLerpStepSizes32x4IsCorrectForPositiveSteps() {
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final interp = new LinearInterpolator(0.0);
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interp.targetValue = 4.0;
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final stepSizes = interp.getLerpStepSizes32x4(NUM_SAMPLES);
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Assert.floatEquals(0.5, Float32x4.getFast(stepSizes, 0));
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Assert.floatEquals(1.0, Float32x4.getFast(stepSizes, 1));
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Assert.floatEquals(1.5, Float32x4.getFast(stepSizes, 2));
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Assert.floatEquals(2.0, Float32x4.getFast(stepSizes, 3));
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}
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function test_getLerpStepSizes32x4IsCorrectForNegativeSteps() {
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final interp = new LinearInterpolator(0.0);
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interp.targetValue = -4.0;
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final stepSizes = interp.getLerpStepSizes32x4(NUM_SAMPLES);
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Assert.floatEquals(-0.5, Float32x4.getFast(stepSizes, 0));
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Assert.floatEquals(-1.0, Float32x4.getFast(stepSizes, 1));
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Assert.floatEquals(-1.5, Float32x4.getFast(stepSizes, 2));
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Assert.floatEquals(-2.0, Float32x4.getFast(stepSizes, 3));
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}
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function test_applySIMD32x4() {
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final samples = new AudioBufferChannelView(NUM_SAMPLES);
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for (i in 0...NUM_SAMPLES) {
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samples[i] = 1.0;
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}
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final interp = new LinearInterpolator(0.0);
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interp.targetValue = 4.0;
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final stepSizes = interp.getLerpStepSizes32x4(NUM_SAMPLES);
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interp.applySIMD32x4(samples, 0, stepSizes);
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Assert.floatEquals(0.5, samples[0]);
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Assert.floatEquals(1.0, samples[1]);
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Assert.floatEquals(1.5, samples[2]);
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Assert.floatEquals(2.0, samples[3]);
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Assert.floatEquals(2.0, interp.currentValue);
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interp.applySIMD32x4(samples, 4, stepSizes);
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Assert.floatEquals(2.5, samples[4]);
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Assert.floatEquals(3.0, samples[5]);
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Assert.floatEquals(3.5, samples[6]);
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Assert.floatEquals(4.0, samples[7]);
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Assert.floatEquals(4.0, interp.currentValue);
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}
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}
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