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Added test for AmbientOcclusionCalculator.

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David Williams
2011-06-11 18:04:04 +01:00
parent 8b353fb5bc
commit ffa4fcaade
4 changed files with 125 additions and 0 deletions
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tests/TestAmbientOcclusionGenerator.cpp Normal file
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/*******************************************************************************
Copyright (c) 2010 Matt Williams
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
*******************************************************************************/
#include "TestAmbientOcclusionGenerator.h"
#include "PolyVoxCore/AmbientOcclusionCalculator.h"
#include "PolyVoxCore/Material.h"
#include "PolyVoxCore/SimpleVolume.h"
#include <QtTest>
using namespace PolyVox;
void TestAmbientOcclusionGenerator::testExecute()
{
const int32_t g_uVolumeSideLength = 64;
//Create empty volume
SimpleVolume<Material8> volData(Region(Vector3DInt32(0,0,0), Vector3DInt32(g_uVolumeSideLength-1, g_uVolumeSideLength-1, g_uVolumeSideLength-1)));
//Create two solid walls at opposite sides of the volume
for (int32_t z = 0; z < g_uVolumeSideLength; z++)
{
if((z < 20) || (z > g_uVolumeSideLength - 20))
{
for (int32_t y = 0; y < g_uVolumeSideLength; y++)
{
for (int32_t x = 0; x < g_uVolumeSideLength; x++)
{
Material8 voxel(1);
volData.setVoxelAt(x, y, z, voxel);
}
}
}
}
//Create an array to store the result. Array can be smaller than the volume by an integer amount.
const int32_t g_uArraySideLength = g_uVolumeSideLength / 2;
Array<3, uint8_t> ambientOcclusionResult(ArraySizes(g_uArraySideLength)(g_uArraySideLength)(g_uArraySideLength));
//Create the ambient occlusion calculator
AmbientOcclusionCalculator<SimpleVolume, Material8> calculator(&volData, &ambientOcclusionResult, volData.getEnclosingRegion(), 32.0f, 255);
//Execute the calculator
calculator.execute();
//Check the results by sampling along a line though the centre of the volume. Because
//of the two walls we added, samples in the middle are darker than those at the edge.
QCOMPARE(static_cast<int>(ambientOcclusionResult[16][ 0][16]), 178);
QCOMPARE(static_cast<int>(ambientOcclusionResult[16][ 8][16]), 109);
QCOMPARE(static_cast<int>(ambientOcclusionResult[16][16][16]), 103);
QCOMPARE(static_cast<int>(ambientOcclusionResult[16][24][16]), 123);
QCOMPARE(static_cast<int>(ambientOcclusionResult[16][31][16]), 173);
}
QTEST_MAIN(TestAmbientOcclusionGenerator)