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58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
//
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// OctalCode.h
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// hifi
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//
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// Created by Stephen Birarda on 3/15/13.
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// Copyright (c) 2013 HighFidelity, Inc. All rights reserved.
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//
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#ifndef __hifi__OctalCode__
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#define __hifi__OctalCode__
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#include <string.h>
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#include <QString>
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const int BITS_IN_BYTE = 8;
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const int BITS_IN_OCTAL = 3;
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const int NUMBER_OF_COLORS = 3; // RGB!
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const int SIZE_OF_COLOR_DATA = NUMBER_OF_COLORS * sizeof(unsigned char); // size in bytes
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const int RED_INDEX = 0;
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const int GREEN_INDEX = 1;
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const int BLUE_INDEX = 2;
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void printOctalCode(const unsigned char* octalCode);
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int bytesRequiredForCodeLength(unsigned char threeBitCodes);
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int branchIndexWithDescendant(const unsigned char* ancestorOctalCode, const unsigned char* descendantOctalCode);
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unsigned char* childOctalCode(const unsigned char* parentOctalCode, char childNumber);
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int numberOfThreeBitSectionsInCode(const unsigned char* octalCode);
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unsigned char* chopOctalCode(const unsigned char* originalOctalCode, int chopLevels);
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unsigned char* rebaseOctalCode(const unsigned char* originalOctalCode, const unsigned char* newParentOctalCode,
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bool includeColorSpace = false);
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const int CHECK_NODE_ONLY = -1;
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bool isAncestorOf(const unsigned char* possibleAncestor, const unsigned char* possibleDescendent,
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int descendentsChild = CHECK_NODE_ONLY);
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// Note: copyFirstVertexForCode() is preferred because it doesn't allocate memory for the return
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// but other than that these do the same thing.
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float * firstVertexForCode(const unsigned char* octalCode);
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void copyFirstVertexForCode(const unsigned char* octalCode, float* output);
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struct VoxelPositionSize {
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float x, y, z, s;
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};
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void voxelDetailsForCode(const unsigned char* octalCode, VoxelPositionSize& voxelPositionSize);
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typedef enum {
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ILLEGAL_CODE = -2,
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LESS_THAN = -1,
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EXACT_MATCH = 0,
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GREATER_THAN = 1
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} OctalCodeComparison;
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OctalCodeComparison compareOctalCodes(const unsigned char* code1, const unsigned char* code2);
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QString octalCodeToHexString(const unsigned char* octalCode);
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unsigned char* hexStringToOctalCode(const QString& input);
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#endif /* defined(__hifi__OctalCode__) */
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