78 lines
3.6 KiB
C++
78 lines
3.6 KiB
C++
/*******************************************************************************
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 David Williams and Matthew Williams
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*******************************************************************************/
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#ifndef __PolyVox_SurfaceExtractor_H__
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#define __PolyVox_SurfaceExtractor_H__
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#include "Impl/MarchingCubesTables.h"
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#include "Impl/PlatformDefinitions.h"
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#include "Array.h"
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#include "DefaultMarchingCubesController.h"
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#include "Mesh.h"
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#include "Vertex.h"
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namespace PolyVox
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{
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/// A specialised vertex format which encodes the data from the Marching Cubes algorithm in a very
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/// compact way. You will probably want to use the decodeVertex() function to turn it into a regular
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/// Vertex for rendering, but advanced users can also decode it on the GPU (see PolyVox examples).
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template<typename _DataType>
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struct MarchingCubesVertex
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{
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typedef _DataType DataType;
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// Each component of the position is stored using 8.8 fixed-point encoding.
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Vector3DUint16 encodedPosition;
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// The normal is encoded as a 16-bit unsigned integer using the 'oct16'
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// encoding described here: http://jcgt.org/published/0003/02/01/
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uint16_t encodedNormal;
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// User data
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DataType data;
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};
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// Convienient shorthand for declaring a mesh of marching cubes vertices
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// Currently disabled because it requires GCC 4.7
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//template <typename VertexDataType, typename IndexType = DefaultIndexType>
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//using MarchingCubesMesh = Mesh< MarchingCubesVertex<VertexDataType>, IndexType >;
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/// Decodes a MarchingCubesVertex by converting it into a regular Vertex which can then be directly used for rendering.
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template<typename DataType>
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Vertex<DataType> decodeVertex(const MarchingCubesVertex<DataType>& marchingCubesVertex);
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// Generates a mesh from the voxel data using the Marching Cubes algorithm.
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template< typename VolumeType, typename ControllerType = DefaultMarchingCubesController<typename VolumeType::VoxelType> >
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Mesh<MarchingCubesVertex<typename VolumeType::VoxelType> > extractMarchingCubesMesh(VolumeType* volData, Region region, ControllerType controller = ControllerType());
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// Generates a mesh from the voxel data using the Marching Cubes algorithm, placing the result into a user-provided Mesh.
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template< typename VolumeType, typename MeshType, typename ControllerType = DefaultMarchingCubesController<typename VolumeType::VoxelType> >
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void extractMarchingCubesMeshCustom(VolumeType* volData, Region region, MeshType* result, ControllerType controller = ControllerType());
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}
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#include "MarchingCubesSurfaceExtractor.inl"
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#endif
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