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Added marching cubes performance tests.

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This commit is contained in:
David Williams
2014-08-18 22:10:35 +02:00
parent c75b0d58ce
commit 72f696652a
3 changed files with 55 additions and 2 deletions
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52
tests/TestSurfaceExtractor.cpp
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@ -122,7 +122,41 @@ SimpleVolume<VoxelType>* createAndFillVolume(void)
return volData;
}
void TestSurfaceExtractor::testExecute()
// From http://stackoverflow.com/a/5289624
float randomFloat(float a, float b)
{
float random = ((float)rand()) / (float)RAND_MAX;
float diff = b - a;
float r = random * diff;
return a + r;
}
template <typename VolumeType>
VolumeType* createAndFillVolumeWithNoise(int32_t iVolumeSideLength, float minValue, float maxValue)
{
//Create empty volume
VolumeType* volData = new VolumeType(Region(Vector3DInt32(0, 0, 0), Vector3DInt32(iVolumeSideLength - 1, iVolumeSideLength - 1, iVolumeSideLength - 1)));
// Seed generator for consistency between runs.
srand(12345);
// Fill
for (int32_t z = 0; z < iVolumeSideLength; z++)
{
for (int32_t y = 0; y < iVolumeSideLength; y++)
{
for (int32_t x = 0; x < iVolumeSideLength; x++)
{
float voxelValue = randomFloat(minValue, maxValue);
volData->setVoxelAt(x, y, z, voxelValue);
}
}
}
return volData;
}
void TestSurfaceExtractor::testBehaviour()
{
// These tests apply the Marching Cubes surface extractor to volumes of various voxel types. In addition we sometimes make use of custom controllers
// and user-provided meshes to make sure these various combinations work as expected.
@ -176,4 +210,20 @@ void TestSurfaceExtractor::testExecute()
QCOMPARE(materialMesh.getVertex(100).data.getMaterial(), uint16_t(79)); // Verify the data attached to the vertex
}
void TestSurfaceExtractor::testEmptyVolumePerformance()
{
auto emptyVol = createAndFillVolumeWithNoise< SimpleVolume<float> >(128, -2.0f, -1.0f);
MarchingCubesMesh< float, uint16_t > emptyMesh;
QBENCHMARK{ extractMarchingCubesMeshCustom(emptyVol, Region(32, 32, 32, 63, 63, 63), &emptyMesh); }
QCOMPARE(emptyMesh.getNoOfVertices(), uint16_t(0));
}
void TestSurfaceExtractor::testNoiseVolumePerformance()
{
auto noiseVol = createAndFillVolumeWithNoise< SimpleVolume<float> >(128, -1.0f, 1.0f);
MarchingCubesMesh< float, uint16_t > noiseMesh;
QBENCHMARK{ extractMarchingCubesMeshCustom(noiseVol, Region(32, 32, 32, 63, 63, 63), &noiseMesh); }
QCOMPARE(noiseMesh.getNoOfVertices(), uint16_t(48967));
}
QTEST_MAIN(TestSurfaceExtractor)