////  OctalCode.h//  libraries/shared/src////  Created by Stephen Birarda on 3/15/13.//  Copyright 2013 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #ifndef hifi_OctalCode_h#define hifi_OctalCode_h #include <vector>#include <QString> #include <memory> const int BITS_IN_OCTAL = 3;const int NUMBER_OF_COLORS = 3; // RGB!const int SIZE_OF_COLOR_DATA = NUMBER_OF_COLORS * sizeof(unsigned char); // size in bytesconst int RED_INDEX   = 0;const int GREEN_INDEX = 1;const int BLUE_INDEX  = 2; using OctalCodePtr = std::shared_ptr<unsigned char>;using OctalCodePtrList = std::vector<OctalCodePtr>; void printOctalCode(const unsigned char* octalCode);size_t bytesRequiredForCodeLength(unsigned char threeBitCodes);int branchIndexWithDescendant(const unsigned char* ancestorOctalCode, const unsigned char* descendantOctalCode);unsigned char* childOctalCode(const unsigned char* parentOctalCode, char childNumber); const int OVERFLOWED_OCTCODE_BUFFER = -1;const int UNKNOWN_OCTCODE_LENGTH = -2; /// will return -1 if there is an error in the octcode encoding, or it would overflow maxBytes/// \param const unsigned char* octalCode the octalcode to decode/// \param int maxBytes number of bytes that octalCode is expected to be, -1 if unknownint numberOfThreeBitSectionsInCode(const unsigned char* octalCode, int maxBytes = UNKNOWN_OCTCODE_LENGTH); unsigned char* chopOctalCode(const unsigned char* originalOctalCode, int chopLevels); const int CHECK_NODE_ONLY = -1;bool isAncestorOf(const unsigned char* possibleAncestor, const unsigned char* possibleDescendent,         int descendentsChild = CHECK_NODE_ONLY); void copyFirstVertexForCode(const unsigned char* octalCode, float* output); struct VoxelPositionSize {    float x, y, z, s;};void voxelDetailsForCode(const unsigned char* octalCode, VoxelPositionSize& voxelPositionSize); typedef enum {    ILLEGAL_CODE = -2,    LESS_THAN = -1,    EXACT_MATCH = 0,    GREATER_THAN = 1} OctalCodeComparison; OctalCodeComparison compareOctalCodes(const unsigned char* code1, const unsigned char* code2); OctalCodePtr createOctalCodePtr(size_t size);QString octalCodeToHexString(const unsigned char* octalCode);OctalCodePtr hexStringToOctalCode(const QString& input); #endif // hifi_OctalCode_h