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Add a new pickVoxel function.

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Hopefully this pickVoxel function will fulfil most most need with
raycasting which aren't covered by the existing raycast functions.

It's essentially a wrapper around the current functions, using a custom
functor to store the position of a solid voxel as well as the previous
empty voxel. It doesn't require the user to provide a functor of their own,
just the value that they've assigned to empty voxels.

As well as the function itself, we also have a unit test as well as it
being built in the bindings.
This commit is contained in:
Matt Williams
2013-05-01 22:28:46 +01:00
parent cb808ab593
commit f98959f92a
8 changed files with 251 additions and 0 deletions
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67
tests/TestPicking.cpp Normal file
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/*******************************************************************************
Copyright (c) 2013 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 "TestPicking.h"
#include "PolyVoxCore/Picking.h"
#include "PolyVoxCore/SimpleVolume.h"
#include <QtTest>
using namespace PolyVox;
void TestPicking::testExecute()
{
const int32_t uVolumeSideLength = 32;
SimpleVolume<int8_t> 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++)
{
if((x > uVolumeSideLength/2)) //x > 16 is filled
{
volData.setVoxelAt(x, y, z, 100);
}
else
{
volData.setVoxelAt(x, y, z, 0);
}
}
}
}
PickResult resultHit = pickVoxel(&volData, Vector3DFloat(0, uVolumeSideLength / 2, uVolumeSideLength / 2), Vector3DFloat(uVolumeSideLength, 0, 0));
QCOMPARE(resultHit.didHit, true);
QCOMPARE(resultHit.hitVoxel, Vector3DInt32((uVolumeSideLength / 2) + 1, uVolumeSideLength / 2, uVolumeSideLength / 2));
QCOMPARE(resultHit.previousVoxel, Vector3DInt32((uVolumeSideLength / 2), uVolumeSideLength / 2, uVolumeSideLength / 2));
PickResult resultMiss = pickVoxel(&volData, Vector3DFloat(0, uVolumeSideLength / 2, uVolumeSideLength / 2), Vector3DFloat(uVolumeSideLength / 2, uVolumeSideLength, uVolumeSideLength));
QCOMPARE(resultMiss.didHit, false);
}
QTEST_MAIN(TestPicking)