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//##########################################################################
//# #
//# CLOUDCOMPARE #
//# #
//# This program is free software; you can redistribute it and/or modify #
//# it under the terms of the GNU General Public License as published by #
//# the Free Software Foundation; version 2 or later of the License. #
//# #
//# This program is distributed in the hope that it will be useful, #
//# but WITHOUT ANY WARRANTY; without even the implied warranty of #
//# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
//# GNU General Public License for more details. #
//# #
//# COPYRIGHT: EDF R&D / TELECOM ParisTech (ENST-TSI) #
//# #
//##########################################################################
#ifndef CC_NORMAL_COMPRESSOR_HEADER
#define CC_NORMAL_COMPRESSOR_HEADER
//Local
#include "ccBasicTypes.h"
//! Normal compressor
class QCC_DB_LIB_API ccNormalCompressor
{
public:
//! Compressed normals quantization level (number of directions: 2^(2*N+3))
/** \warning Never pass a 'constant initializer' by reference
**/
static const unsigned char QUANTIZE_LEVEL = 9; //2097152 normals * 12 bytes = 24 Mb of memory
//! Last valid normal code
static const unsigned MAX_VALID_NORM_CODE = (1 << (QUANTIZE_LEVEL * 2 + 3)) - 1;
//! Null normal code
static const unsigned NULL_NORM_CODE = MAX_VALID_NORM_CODE + 1;
//! Compression algorithm
static unsigned Compress(const PointCoordinateType N[3]);
//! Decompression algorithm
static void Decompress(unsigned index, PointCoordinateType N[3], unsigned char level = QUANTIZE_LEVEL);
//! Inverts a (compressed) normal
static void InvertNormal(CompressedNormType &code);
};
#endif //CC_NORMAL_COMPRESSOR_HEADER
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