83 lines
2.4 KiB
C++
83 lines
2.4 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 "TestRaycast.h"
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#include "PolyVoxCore/Density.h"
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#include "PolyVoxCore/Raycast.h"
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#include "PolyVoxCore/SimpleVolume.h"
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#include "PolyVoxImpl/RandomUnitVectors.h"
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#include <QtTest>
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using namespace PolyVox;
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void TestRaycast::testExecute()
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{
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const int32_t uVolumeSideLength = 32;
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//Create a hollow volume, with solid sides on x and y but with open ends in z.
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SimpleVolume<Density8> volData(Region(Vector3DInt32(0,0,0), Vector3DInt32(uVolumeSideLength-1, uVolumeSideLength-1, uVolumeSideLength-1)));
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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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Density8 voxelValue;
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if((x == 0) || (x == uVolumeSideLength-1) || (y == 0) || (y == uVolumeSideLength-1))
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{
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voxelValue.setDensity(255);
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}
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else
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{
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voxelValue.setDensity(0);
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}
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volData.setVoxelAt(x, y, z, voxelValue);
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}
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}
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}
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//Cast rays from the centre. Roughly 2/3 should escape.
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Vector3DFloat start (uVolumeSideLength / 2, uVolumeSideLength / 2, uVolumeSideLength / 2);
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int hits = 0;
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for(int ct = 0; ct < 1000000; ct++)
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{
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RaycastResult result;
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Raycast<SimpleVolume, Density8> raycast(&volData, start, randomUnitVectors[ct % 1024] * 1000.0f, result);
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raycast.execute();
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if(result.foundIntersection)
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{
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hits++;
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}
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}
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//Check the number of hits.
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QCOMPARE(hits, 687494);
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}
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QTEST_MAIN(TestRaycast)
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