134 lines
6.9 KiB
C
134 lines
6.9 KiB
C
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/*
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Copyright (c) 2013 Khaled Mammou - Advanced Micro Devices, Inc.
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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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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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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
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THE SOFTWARE.
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*/
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#pragma once
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#ifndef O3DGC_TRIANGLE_LIST_DECODER_H
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#define O3DGC_TRIANGLE_LIST_DECODER_H
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#include "o3dgcCommon.h"
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#include "o3dgcTriangleFans.h"
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#include "o3dgcBinaryStream.h"
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#include "o3dgcAdjacencyInfo.h"
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namespace o3dgc
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{
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//!
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template <class T>
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class TriangleListDecoder
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{
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public:
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//! Constructor.
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TriangleListDecoder(void)
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{
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m_vertexCount = 0;
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m_triangleCount = 0;
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m_numTriangles = 0;
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m_numVertices = 0;
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m_triangles = 0;
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m_numConqueredTriangles = 0;
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m_numVisitedVertices = 0;
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m_visitedVertices = 0;
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m_visitedVerticesValence = 0;
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m_maxNumVertices = 0;
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m_maxNumTriangles = 0;
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m_itNumTFans = 0;
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m_itDegree = 0;
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m_itConfig = 0;
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m_itOperation = 0;
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m_itIndex = 0;
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m_tempTriangles = 0;
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m_tempTrianglesSize = 0;
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m_decodeTrianglesOrder = false;
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m_decodeVerticesOrder = false;
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};
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//! Destructor.
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~TriangleListDecoder(void)
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{
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delete [] m_tempTriangles;
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};
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O3DGCStreamType GetStreamType() const { return m_streamType; }
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bool GetReorderTriangles() const { return m_decodeTrianglesOrder; }
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bool GetReorderVertices() const { return m_decodeVerticesOrder; }
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void SetStreamType(O3DGCStreamType streamType) { m_streamType = streamType; }
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const AdjacencyInfo & GetVertexToTriangle() const { return m_vertexToTriangle;}
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O3DGCErrorCode Decode(T * const triangles,
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const long numTriangles,
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const long numVertices,
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const BinaryStream & bstream,
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unsigned long & iterator)
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{
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unsigned char compressionMask = bstream.ReadUChar(iterator, m_streamType);
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m_decodeTrianglesOrder = ( (compressionMask&2) != 0);
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m_decodeVerticesOrder = ( (compressionMask&1) != 0);
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if (m_decodeVerticesOrder) // vertices reordering not supported
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{
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return O3DGC_ERROR_NON_SUPPORTED_FEATURE;
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}
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unsigned long maxSizeV2T = bstream.ReadUInt32(iterator, m_streamType);
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Init(triangles, numTriangles, numVertices, maxSizeV2T);
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m_ctfans.Load(bstream, iterator, m_decodeTrianglesOrder, m_streamType);
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Decompress();
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return O3DGC_OK;
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}
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O3DGCErrorCode Reorder();
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private:
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O3DGCErrorCode Init(T * const triangles,
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const long numTriangles,
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const long numVertices,
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const long maxSizeV2T);
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O3DGCErrorCode Decompress();
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O3DGCErrorCode CompueLocalConnectivityInfo(const long focusVertex);
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O3DGCErrorCode DecompressTFAN(const long focusVertex);
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unsigned long m_itNumTFans;
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unsigned long m_itDegree;
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unsigned long m_itConfig;
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unsigned long m_itOperation;
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unsigned long m_itIndex;
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long m_maxNumVertices;
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long m_maxNumTriangles;
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long m_numTriangles;
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long m_numVertices;
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long m_tempTrianglesSize;
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T * m_triangles;
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T * m_tempTriangles;
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long m_vertexCount;
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long m_triangleCount;
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long m_numConqueredTriangles;
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long m_numVisitedVertices;
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long * m_visitedVertices;
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long * m_visitedVerticesValence;
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AdjacencyInfo m_vertexToTriangle;
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CompressedTriangleFans m_ctfans;
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TriangleFans m_tfans;
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O3DGCStreamType m_streamType;
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bool m_decodeTrianglesOrder;
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bool m_decodeVerticesOrder;
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};
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}
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#include "o3dgcTriangleListDecoder.inl" // template implementation
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#endif // O3DGC_TRIANGLE_LIST_DECODER_H
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