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Added test for CustomSurfaceExtractorController.

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unknown 2012-07-09 18:30:21 +02:00
parent 1217ea1fd8
commit 23fbb59af8
1 changed files with 57 additions and 0 deletions
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57
tests/TestSurfaceExtractor.cpp
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@ -32,6 +32,32 @@ freely, subject to the following restrictions:
using namespace PolyVox;
// Test our ability to modify the behaviour of the SurfaceExtractor. This simple example only modifies
// the threshold (and actually this can be achieved by passing a parameter to the constructor of the
// DefaultSurfaceExtractionController) but you could implement custom behaviour in the other members
// if you wanted too. Actually, it's not clear if this ability is really useful because I can't think
// what you'd modify apart from the threshold but the ability is at least available. Also, the
// DefaultSurfaceExtractionController is templatised whereas this exmple shows that controllers don't
// have to be.
class CustomSurfaceExtractionController
{
public:
float convertToDensity(float voxel)
{
return voxel;
}
float convertToMaterial(float voxel)
{
return 1;
}
float getThreshold(void)
{
return 50.0f;
}
};
// These 'writeDensityValueToVoxel' functions provide a unified interface for writting densities to primative and class voxel types.
// They are conceptually the inverse of the 'convertToDensity' function used by the SurfaceExtractor. They probably shouldn't be part
// of PolyVox, but they might be usful to other tests so we cold move them into a 'Tests.h' or something in the future.
@ -96,6 +122,30 @@ void testForType(SurfaceMesh<PositionMaterialNormal>& result)
extractor.execute();
}
void testCustomController(SurfaceMesh<PositionMaterialNormal>& result)
{
const int32_t uVolumeSideLength = 32;
//Create empty volume
SimpleVolume<float> volData(Region(Vector3DInt32(0,0,0), Vector3DInt32(uVolumeSideLength-1, uVolumeSideLength-1, uVolumeSideLength-1)));
for (int32_t z = 0; z < uVolumeSideLength; z++)
{
for (int32_t y = 0; y < uVolumeSideLength; y++)
{
for (int32_t x = 0; x < uVolumeSideLength; x++)
{
float voxelValue = x + y + z;
volData.setVoxelAt(x, y, z, voxelValue);
}
}
}
CustomSurfaceExtractionController controller;
SurfaceExtractor< SimpleVolume<float>, CustomSurfaceExtractionController > extractor(&volData, volData.getEnclosingRegion(), &result, controller);
extractor.execute();
}
void TestSurfaceExtractor::testExecute()
{
const static uint32_t uExpectedVertices = 4731;
@ -106,6 +156,7 @@ void TestSurfaceExtractor::testExecute()
SurfaceMesh<PositionMaterialNormal> mesh;
//Run the test for various voxel types.
testForType<int8_t>(mesh);
QCOMPARE(mesh.getNoOfVertices(), uExpectedVertices);
QCOMPARE(mesh.getNoOfIndices(), uExpectedIndices);
@ -155,6 +206,12 @@ void TestSurfaceExtractor::testExecute()
QCOMPARE(mesh.getNoOfVertices(), uExpectedVertices);
QCOMPARE(mesh.getNoOfIndices(), uExpectedIndices);
QCOMPARE(mesh.getVertices()[uMaterialToCheck].getMaterial(), fExpectedMaterial);
//Test whether the CustomSurfaceExtractor works.
testCustomController(mesh);
QCOMPARE(mesh.getNoOfVertices(), uExpectedVertices);
QCOMPARE(mesh.getNoOfIndices(), uExpectedIndices);
QCOMPARE(mesh.getVertices()[uMaterialToCheck].getMaterial(), fNoMaterial);
}
QTEST_MAIN(TestSurfaceExtractor)