83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
/*******************************************************************************
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Copyright (c) 2005-2009 David 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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#ifndef __AmbientOcclusionCalculator_H__
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#define __AmbientOcclusionCalculator_H__
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#include "Impl/RandomUnitVectors.h"
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#include "Impl/RandomVectors.h"
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#include "PolyVox/Array.h"
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#include "PolyVox/Region.h"
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#include "PolyVox/Raycast.h"
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//These two should not be here!
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#include "PolyVox/Material.h"
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#include "PolyVox/RawVolume.h"
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#include <algorithm>
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namespace PolyVox
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{
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/**
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* \file
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*
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* Ambient occlusion
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*/
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template<typename IsVoxelTransparentCallback>
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class AmbientOcclusionCalculatorRaycastCallback
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{
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public:
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AmbientOcclusionCalculatorRaycastCallback(IsVoxelTransparentCallback isVoxelTransparentCallback) : mIsVoxelTransparentCallback(isVoxelTransparentCallback)
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{
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}
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bool operator()(const RawVolume<uint8_t>::Sampler& sampler)
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{
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uint8_t sample = sampler.getVoxel();
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bool func = mIsVoxelTransparentCallback(sample);
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return func;
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}
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IsVoxelTransparentCallback mIsVoxelTransparentCallback;
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};
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// NOTE: The callback needs to be a functor not a function. I haven't been
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// able to work the required template magic to get functions working as well.
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//
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// Matt: If you make the function take a "IsVoxelTransparentCallback&&" then
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// it will forward it on. Works for functors, functions and lambdas.
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// This will be 'perfect forwarding' using 'universal references'
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// This will require C++11 rvalue references which is why I haven't made the
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// change yet.
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/// Calculate the ambient occlusion for the volume
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template<typename VolumeType, typename IsVoxelTransparentCallback>
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void calculateAmbientOcclusion(VolumeType* volInput, Array<3, uint8_t>* arrayResult, Region region, float fRayLength, uint8_t uNoOfSamplesPerOutputElement, IsVoxelTransparentCallback isVoxelTransparentCallback);
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}
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#include "PolyVox/AmbientOcclusionCalculator.inl"
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#endif //__AmbientOcclusionCalculator_H__
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