134 lines
4.5 KiB
C++
134 lines
4.5 KiB
C++
/*******************************************************************************
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Copyright (c) 2010 Matt Williams
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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*******************************************************************************/
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#include "TestCubicSurfaceExtractor.h"
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#include "PolyVoxCore/Density.h"
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#include "PolyVoxCore/Material.h"
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#include "PolyVoxCore/MaterialDensityPair.h"
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#include "PolyVoxCore/SimpleVolume.h"
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#include "PolyVoxCore/CubicSurfaceExtractor.h"
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#include <QtTest>
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using namespace PolyVox;
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template<typename _VoxelType>
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class CustomIsQuadNeeded
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{
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public:
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typedef _VoxelType VoxelType;
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bool operator()(VoxelType back, VoxelType front, VoxelType& materialToUse)
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{
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// Not a useful test - it just does something different
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// to the DefaultIsQuadNeeded so we can check it compiles.
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if ((back > 1) && (front <= 1))
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{
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materialToUse = static_cast<VoxelType>(back);
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return true;
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}
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else
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{
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return false;
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}
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}
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};
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// Runs the surface extractor for a given type.
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template <typename VoxelType>
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SimpleVolume<VoxelType>* createAndFillVolumeWithNoise(VoxelType minValue, VoxelType maxValue)
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{
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const int32_t uVolumeSideLength = 32;
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//Create empty volume
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SimpleVolume<VoxelType>* volData = new SimpleVolume<VoxelType>(Region(Vector3DInt32(0, 0, 0), Vector3DInt32(uVolumeSideLength - 1, uVolumeSideLength - 1, uVolumeSideLength - 1)), 16);
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srand(12345);
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//Fill the volume with data
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for (int32_t z = 0; z < uVolumeSideLength; z++)
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{
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for (int32_t y = 0; y < uVolumeSideLength; y++)
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{
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for (int32_t x = 0; x < uVolumeSideLength; x++)
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{
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if (minValue == maxValue)
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{
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// In this case we are filling the whole volume with a single value.
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volData->setVoxelAt(x, y, z, minValue);
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}
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else
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{
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// Otherwise we write random voxel values between zero and the requested maximum
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int voxelValue = (rand() % (maxValue - minValue + 1)) + minValue;
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volData->setVoxelAt(x, y, z, static_cast<VoxelType>(voxelValue));
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}
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}
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}
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}
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return volData;
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}
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void TestCubicSurfaceExtractor::testExecute()
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{
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// Behavioural tests
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// Test with default mesh and contoller types.
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auto uint8Vol = createAndFillVolumeWithNoise<uint8_t>(0, 2);
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auto uint8Mesh = extractCubicMesh(uint8Vol, uint8Vol->getEnclosingRegion());
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QCOMPARE(uint8Mesh.getNoOfVertices(), uint32_t(57687));
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QCOMPARE(uint8Mesh.getNoOfIndices(), uint32_t(216234));
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// Test with default mesh type but user-provided controller.
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auto int8Vol = createAndFillVolumeWithNoise<int8_t>(0, 2);
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auto int8Mesh = extractCubicMesh(int8Vol, int8Vol->getEnclosingRegion(), CustomIsQuadNeeded<int8_t>());
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QCOMPARE(int8Mesh.getNoOfVertices(), uint32_t(29027));
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QCOMPARE(int8Mesh.getNoOfIndices(), uint32_t(178356));
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// Test with default controller but user-provided mesh.
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auto uint32Vol = createAndFillVolumeWithNoise<uint32_t>(0, 2);
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CubicMesh< uint32_t, uint16_t > uint32Mesh;
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extractCubicMeshCustom(uint32Vol, uint32Vol->getEnclosingRegion(), &uint32Mesh);
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QCOMPARE(uint32Mesh.getNoOfVertices(), uint16_t(57687));
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QCOMPARE(uint32Mesh.getNoOfIndices(), uint32_t(216234));
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// Test with both mesh and controller being provided by the user.
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auto int32Vol = createAndFillVolumeWithNoise<int32_t>(0, 2);
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CubicMesh< int32_t, uint16_t > int32Mesh;
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extractCubicMeshCustom(int32Vol, int32Vol->getEnclosingRegion(), &int32Mesh, CustomIsQuadNeeded<int32_t>());
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QCOMPARE(int32Mesh.getNoOfVertices(), uint16_t(29027));
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QCOMPARE(int32Mesh.getNoOfIndices(), uint32_t(178356));
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// Performance tests
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auto emptyVol = createAndFillVolumeWithNoise<uint32_t>(0, 0);
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CubicMesh< uint32_t, uint16_t > emptyMesh;
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QBENCHMARK{ extractCubicMeshCustom(emptyVol, emptyVol->getEnclosingRegion(), &emptyMesh); }
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QCOMPARE(emptyMesh.getNoOfVertices(), uint16_t(0));
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}
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QTEST_MAIN(TestCubicSurfaceExtractor)
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