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GeoBox.cpp
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#include "GeoBox.hpp"
#include <string.h>
// 32 BITS CONSTANTS
#define UINT32_BIT0 UINT32_C(0x00000001)
#define UINT32_BIT1 UINT32_C(0x00000002)
#define UINT32_BIT2 UINT32_C(0x00000004)
#define UINT32_BIT3 UINT32_C(0x00000008)
#define UINT32_BIT4 UINT32_C(0x00000010)
#define UINT32_BIT5 UINT32_C(0x00000020)
#define UINT32_BIT6 UINT32_C(0x00000040)
#define UINT32_BIT7 UINT32_C(0x00000080)
#define UINT32_BIT8 UINT32_C(0x00000100)
#define UINT32_BIT9 UINT32_C(0x00000200)
#define UINT32_BIT10 UINT32_C(0x00000400)
#define UINT32_BIT11 UINT32_C(0x00000800)
#define UINT32_BIT12 UINT32_C(0x00001000)
#define UINT32_BIT13 UINT32_C(0x00002000)
#define UINT32_BIT14 UINT32_C(0x00004000)
#define UINT32_BIT15 UINT32_C(0x00008000)
#define UINT32_BIT16 UINT32_C(0x00010000)
#define UINT32_BIT17 UINT32_C(0x00020000)
#define UINT32_BIT18 UINT32_C(0x00040000)
#define UINT32_BIT19 UINT32_C(0x00080000)
#define UINT32_BIT20 UINT32_C(0x00100000)
#define UINT32_BIT21 UINT32_C(0x00200000)
#define UINT32_BIT22 UINT32_C(0x00400000)
#define UINT32_BIT23 UINT32_C(0x00800000)
#define UINT32_BIT24 UINT32_C(0x01000000)
#define UINT32_BIT25 UINT32_C(0x02000000)
#define UINT32_BIT26 UINT32_C(0x04000000)
#define UINT32_BIT27 UINT32_C(0x08000000)
#define UINT32_BIT28 UINT32_C(0x10000000)
#define UINT32_BIT29 UINT32_C(0x20000000)
#define UINT32_BIT30 UINT32_C(0x40000000)
#define UINT32_BIT31 UINT32_C(0x80000000)
// 64 BITS CONSTANTS
#define UINT64_BIT0 UINT64_C(0x0000000000000001)
#define UINT64_BIT1 UINT64_C(0x0000000000000002)
#define UINT64_BIT2 UINT64_C(0x0000000000000004)
#define UINT64_BIT3 UINT64_C(0x0000000000000008)
#define UINT64_BIT4 UINT64_C(0x0000000000000010)
#define UINT64_BIT5 UINT64_C(0x0000000000000020)
#define UINT64_BIT6 UINT64_C(0x0000000000000040)
#define UINT64_BIT7 UINT64_C(0x0000000000000080)
#define UINT64_BIT8 UINT64_C(0x0000000000000100)
#define UINT64_BIT9 UINT64_C(0x0000000000000200)
#define UINT64_BIT10 UINT64_C(0x0000000000000400)
#define UINT64_BIT11 UINT64_C(0x0000000000000800)
#define UINT64_BIT12 UINT64_C(0x0000000000001000)
#define UINT64_BIT13 UINT64_C(0x0000000000002000)
#define UINT64_BIT14 UINT64_C(0x0000000000004000)
#define UINT64_BIT15 UINT64_C(0x0000000000008000)
#define UINT64_BIT16 UINT64_C(0x0000000000010000)
#define UINT64_BIT17 UINT64_C(0x0000000000020000)
#define UINT64_BIT18 UINT64_C(0x0000000000040000)
#define UINT64_BIT19 UINT64_C(0x0000000000080000)
#define UINT64_BIT20 UINT64_C(0x0000000000100000)
#define UINT64_BIT21 UINT64_C(0x0000000000200000)
#define UINT64_BIT22 UINT64_C(0x0000000000400000)
#define UINT64_BIT23 UINT64_C(0x0000000000800000)
#define UINT64_BIT24 UINT64_C(0x0000000001000000)
#define UINT64_BIT25 UINT64_C(0x0000000002000000)
#define UINT64_BIT26 UINT64_C(0x0000000004000000)
#define UINT64_BIT27 UINT64_C(0x0000000008000000)
#define UINT64_BIT28 UINT64_C(0x0000000010000000)
#define UINT64_BIT29 UINT64_C(0x0000000020000000)
#define UINT64_BIT30 UINT64_C(0x0000000040000000)
#define UINT64_BIT31 UINT64_C(0x0000000080000000)
#define UINT64_BIT32 UINT64_C(0x0000000100000000)
#define UINT64_BIT33 UINT64_C(0x0000000200000000)
#define UINT64_BIT34 UINT64_C(0x0000000400000000)
#define UINT64_BIT35 UINT64_C(0x0000000800000000)
#define UINT64_BIT36 UINT64_C(0x0000001000000000)
#define UINT64_BIT37 UINT64_C(0x0000002000000000)
#define UINT64_BIT38 UINT64_C(0x0000004000000000)
#define UINT64_BIT39 UINT64_C(0x0000008000000000)
#define UINT64_BIT40 UINT64_C(0x0000010000000000)
#define UINT64_BIT41 UINT64_C(0x0000020000000000)
#define UINT64_BIT42 UINT64_C(0x0000040000000000)
#define UINT64_BIT43 UINT64_C(0x0000080000000000)
#define UINT64_BIT44 UINT64_C(0x0000100000000000)
#define UINT64_BIT45 UINT64_C(0x0000200000000000)
#define UINT64_BIT46 UINT64_C(0x0000400000000000)
#define UINT64_BIT47 UINT64_C(0x0000800000000000)
#define UINT64_BIT48 UINT64_C(0x0001000000000000)
#define UINT64_BIT49 UINT64_C(0x0002000000000000)
#define UINT64_BIT50 UINT64_C(0x0004000000000000)
#define UINT64_BIT51 UINT64_C(0x0008000000000000)
#define UINT64_BIT52 UINT64_C(0x0010000000000000)
#define UINT64_BIT53 UINT64_C(0x0020000000000000)
#define UINT64_BIT54 UINT64_C(0x0040000000000000)
#define UINT64_BIT55 UINT64_C(0x0080000000000000)
#define UINT64_BIT56 UINT64_C(0x0100000000000000)
#define UINT64_BIT57 UINT64_C(0x0200000000000000)
#define UINT64_BIT58 UINT64_C(0x0400000000000000)
#define UINT64_BIT59 UINT64_C(0x0800000000000000)
#define UINT64_BIT60 UINT64_C(0x1000000000000000)
#define UINT64_BIT61 UINT64_C(0x2000000000000000)
#define UINT64_BIT62 UINT64_C(0x4000000000000000)
#define UINT64_BIT63 UINT64_C(0x8000000000000000)
uint64_t mergeBits (uint32_t a, uint32_t b)
{
uint64_t result = 0;
//if( a & UINT32_BIT0) result |= UINT64_BIT0;
//if( a & UINT32_BIT1) result |= UINT64_BIT2;
//if( a & UINT32_BIT2) result |= UINT64_BIT4;
if( a & UINT32_BIT3) result |= UINT64_BIT6;
if( a & UINT32_BIT4) result |= UINT64_BIT8;
if( a & UINT32_BIT5) result |= UINT64_BIT10;
if( a & UINT32_BIT6) result |= UINT64_BIT12;
if( a & UINT32_BIT7) result |= UINT64_BIT14;
if( a & UINT32_BIT8) result |= UINT64_BIT16;
if( a & UINT32_BIT9) result |= UINT64_BIT18;
if( a & UINT32_BIT10) result |= UINT64_BIT20;
if( a & UINT32_BIT11) result |= UINT64_BIT22;
if( a & UINT32_BIT12) result |= UINT64_BIT24;
if( a & UINT32_BIT13) result |= UINT64_BIT26;
if( a & UINT32_BIT14) result |= UINT64_BIT28;
if( a & UINT32_BIT15) result |= UINT64_BIT30;
if( a & UINT32_BIT16) result |= UINT64_BIT32;
if( a & UINT32_BIT17) result |= UINT64_BIT34;
if( a & UINT32_BIT18) result |= UINT64_BIT36;
if( a & UINT32_BIT19) result |= UINT64_BIT38;
if( a & UINT32_BIT20) result |= UINT64_BIT40;
if( a & UINT32_BIT21) result |= UINT64_BIT42;
if( a & UINT32_BIT22) result |= UINT64_BIT44;
if( a & UINT32_BIT23) result |= UINT64_BIT46;
if( a & UINT32_BIT24) result |= UINT64_BIT48;
if( a & UINT32_BIT25) result |= UINT64_BIT50;
if( a & UINT32_BIT26) result |= UINT64_BIT52;
if( a & UINT32_BIT27) result |= UINT64_BIT54;
if( a & UINT32_BIT28) result |= UINT64_BIT56;
if( a & UINT32_BIT29) result |= UINT64_BIT58;
if( a & UINT32_BIT30) result |= UINT64_BIT60;
if( a & UINT32_BIT31) result |= UINT64_BIT62;
//if( b & UINT32_BIT0) result |= UINT64_BIT1;
//if( b & UINT32_BIT1) result |= UINT64_BIT3;
//if( b & UINT32_BIT2) result |= UINT64_BIT5;
if( b & UINT32_BIT3) result |= UINT64_BIT7;
if( b & UINT32_BIT4) result |= UINT64_BIT9;
if( b & UINT32_BIT5) result |= UINT64_BIT11;
if( b & UINT32_BIT6) result |= UINT64_BIT13;
if( b & UINT32_BIT7) result |= UINT64_BIT15;
if( b & UINT32_BIT8) result |= UINT64_BIT17;
if( b & UINT32_BIT9) result |= UINT64_BIT19;
if( b & UINT32_BIT10) result |= UINT64_BIT21;
if( b & UINT32_BIT11) result |= UINT64_BIT23;
if( b & UINT32_BIT12) result |= UINT64_BIT25;
if( b & UINT32_BIT13) result |= UINT64_BIT27;
if( b & UINT32_BIT14) result |= UINT64_BIT29;
if( b & UINT32_BIT15) result |= UINT64_BIT31;
if( b & UINT32_BIT16) result |= UINT64_BIT33;
if( b & UINT32_BIT17) result |= UINT64_BIT35;
if( b & UINT32_BIT18) result |= UINT64_BIT37;
if( b & UINT32_BIT19) result |= UINT64_BIT39;
if( b & UINT32_BIT20) result |= UINT64_BIT41;
if( b & UINT32_BIT21) result |= UINT64_BIT43;
if( b & UINT32_BIT22) result |= UINT64_BIT45;
if( b & UINT32_BIT23) result |= UINT64_BIT47;
if( b & UINT32_BIT24) result |= UINT64_BIT49;
if( b & UINT32_BIT25) result |= UINT64_BIT51;
if( b & UINT32_BIT26) result |= UINT64_BIT53;
if( b & UINT32_BIT27) result |= UINT64_BIT55;
if( b & UINT32_BIT28) result |= UINT64_BIT57;
if( b & UINT32_BIT29) result |= UINT64_BIT59;
if( b & UINT32_BIT30) result |= UINT64_BIT61;
if( b & UINT32_BIT31) result |= UINT64_BIT63;
return result;
}
uint32_t getX (uint64_t pos)
{
uint32_t result = 0;
//if( pos & UINT64_BIT0) result |= UINT32_BIT0;
//if( pos & UINT64_BIT2) result |= UINT32_BIT1;
//if( pos & UINT64_BIT4) result |= UINT32_BIT2;
if( pos & UINT64_BIT6) result |= UINT32_BIT3;
if( pos & UINT64_BIT8) result |= UINT32_BIT4;
if( pos & UINT64_BIT10) result |= UINT32_BIT5;
if( pos & UINT64_BIT12) result |= UINT32_BIT6;
if( pos & UINT64_BIT14) result |= UINT32_BIT7;
if( pos & UINT64_BIT16) result |= UINT32_BIT8;
if( pos & UINT64_BIT18) result |= UINT32_BIT9;
if( pos & UINT64_BIT20) result |= UINT32_BIT10;
if( pos & UINT64_BIT22) result |= UINT32_BIT11;
if( pos & UINT64_BIT24) result |= UINT32_BIT12;
if( pos & UINT64_BIT26) result |= UINT32_BIT13;
if( pos & UINT64_BIT28) result |= UINT32_BIT14;
if( pos & UINT64_BIT30) result |= UINT32_BIT15;
if( pos & UINT64_BIT32) result |= UINT32_BIT16;
if( pos & UINT64_BIT34) result |= UINT32_BIT17;
if( pos & UINT64_BIT36) result |= UINT32_BIT18;
if( pos & UINT64_BIT38) result |= UINT32_BIT19;
if( pos & UINT64_BIT40) result |= UINT32_BIT20;
if( pos & UINT64_BIT42) result |= UINT32_BIT21;
if( pos & UINT64_BIT44) result |= UINT32_BIT22;
if( pos & UINT64_BIT46) result |= UINT32_BIT23;
if( pos & UINT64_BIT48) result |= UINT32_BIT24;
if( pos & UINT64_BIT50) result |= UINT32_BIT25;
if( pos & UINT64_BIT52) result |= UINT32_BIT26;
if( pos & UINT64_BIT54) result |= UINT32_BIT27;
if( pos & UINT64_BIT56) result |= UINT32_BIT28;
if( pos & UINT64_BIT58) result |= UINT32_BIT29;
if( pos & UINT64_BIT60) result |= UINT32_BIT30;
if( pos & UINT64_BIT62) result |= UINT32_BIT31;
return result;
}
uint32_t getY (uint64_t pos)
{
uint32_t result = 0;
//if( pos & UINT64_BIT1) result |= UINT32_BIT0;
//if( pos & UINT64_BIT3) result |= UINT32_BIT1;
//if( pos & UINT64_BIT5) result |= UINT32_BIT2;
if( pos & UINT64_BIT7) result |= UINT32_BIT3;
if( pos & UINT64_BIT9) result |= UINT32_BIT4;
if( pos & UINT64_BIT11) result |= UINT32_BIT5;
if( pos & UINT64_BIT13) result |= UINT32_BIT6;
if( pos & UINT64_BIT15) result |= UINT32_BIT7;
if( pos & UINT64_BIT17) result |= UINT32_BIT8;
if( pos & UINT64_BIT19) result |= UINT32_BIT9;
if( pos & UINT64_BIT21) result |= UINT32_BIT10;
if( pos & UINT64_BIT23) result |= UINT32_BIT11;
if( pos & UINT64_BIT25) result |= UINT32_BIT12;
if( pos & UINT64_BIT27) result |= UINT32_BIT13;
if( pos & UINT64_BIT29) result |= UINT32_BIT14;
if( pos & UINT64_BIT31) result |= UINT32_BIT15;
if( pos & UINT64_BIT33) result |= UINT32_BIT16;
if( pos & UINT64_BIT35) result |= UINT32_BIT17;
if( pos & UINT64_BIT37) result |= UINT32_BIT18;
if( pos & UINT64_BIT39) result |= UINT32_BIT19;
if( pos & UINT64_BIT41) result |= UINT32_BIT20;
if( pos & UINT64_BIT43) result |= UINT32_BIT21;
if( pos & UINT64_BIT45) result |= UINT32_BIT22;
if( pos & UINT64_BIT47) result |= UINT32_BIT23;
if( pos & UINT64_BIT49) result |= UINT32_BIT24;
if( pos & UINT64_BIT51) result |= UINT32_BIT25;
if( pos & UINT64_BIT53) result |= UINT32_BIT26;
if( pos & UINT64_BIT55) result |= UINT32_BIT27;
if( pos & UINT64_BIT57) result |= UINT32_BIT28;
if( pos & UINT64_BIT59) result |= UINT32_BIT29;
if( pos & UINT64_BIT61) result |= UINT32_BIT30;
if( pos & UINT64_BIT63) result |= UINT32_BIT31;
return result;
}
uint32_t getXmin(GeoBox& a)
{
return getX(a.get_pos());
}
uint32_t getYmin(GeoBox& a)
{
return getY(a.get_pos());
}
uint32_t getXmax(GeoBox& a)
{
uint64_t pos = a.get_pos();
uint64_t mask = UINT64_C(0xFFFFFFFFFFFFFFFF);
mask = mask >> (64 - (a.get_maskLength()));
pos |= mask;
return getX(pos);
}
uint32_t getYmax(GeoBox& a)
{
uint64_t pos = a.get_pos();
uint64_t mask = UINT64_C(0xFFFFFFFFFFFFFFFF);
mask = mask >> (64 - (a.get_maskLength()));
pos |= mask;
return getY(pos);
}
bool geoBoxContains(GeoBox* a, GeoBox* b)
{
if(a->get_maskLength() < b->get_maskLength()) return false;
uint64_t mask = UINT64_C(0xFFFFFFFFFFFFFFFF) << a->get_maskLength();
if((a->get_pos() & mask) == (b->get_pos() & mask)) return true;
return false;
}
bool operator<(GeoBox const& a, GeoBox const& b)
{
if (a.get_pos() < b.get_pos()) return true;
else if (a.get_pos() == b.get_pos() && a.get_maskLength() > b.get_maskLength()) return true;
return false;
}
bool operator>(GeoBox const& a, GeoBox const& b)
{
if (a.get_pos() > b.get_pos()) return true;
else if (a.get_pos() == b.get_pos() && a.get_maskLength() < b.get_maskLength()) return true;
return false;
}
bool operator == (GeoBox const& a, GeoBox const& b)
{
return a.get_data() == b.get_data();
}
bool operator>=(GeoBox const& a, GeoBox const& b)
{
if (a.get_pos() > b.get_pos()) return true;
else if (a.get_pos() == b.get_pos() && a.get_maskLength() < b.get_maskLength()) return true;
return a.get_data() == b.get_data();
}
bool operator<=(GeoBox const& a, GeoBox const& b)
{
if (a.get_pos() < b.get_pos()) return true;
else if (a.get_pos() == b.get_pos () && a.get_maskLength() > b.get_maskLength()) return true;
return a.get_data() == b.get_data();
}
short compareGeoBox(GeoBox const* a, GeoBox const* b)
{
if(a->get_pos() > b->get_pos()) return 1;
if(a->get_pos() < b->get_pos()) return -1;
if(a->get_maskLength() > b->get_maskLength()) return -1;
if(a->get_maskLength() < b->get_maskLength()) return 1;
return 0;
}
bool dividex(Rectangle r, Rectangle& left, Rectangle& right)
{
uint32_t delta = r.x0 ^ r.x1;
short mask_length = 3;
if(delta & UINT32_BIT31) mask_length = 32;
else if(delta & UINT32_BIT30) mask_length = 31;
else if(delta & UINT32_BIT29) mask_length = 30;
else if(delta & UINT32_BIT28) mask_length = 29;
else if(delta & UINT32_BIT27) mask_length = 28;
else if(delta & UINT32_BIT26) mask_length = 27;
else if(delta & UINT32_BIT25) mask_length = 26;
else if(delta & UINT32_BIT24) mask_length = 25;
else if(delta & UINT32_BIT23) mask_length = 24;
else if(delta & UINT32_BIT22) mask_length = 23;
else if(delta & UINT32_BIT21) mask_length = 22;
else if(delta & UINT32_BIT20) mask_length = 21;
else if(delta & UINT32_BIT19) mask_length = 20;
else if(delta & UINT32_BIT18) mask_length = 19;
else if(delta & UINT32_BIT17) mask_length = 18;
else if(delta & UINT32_BIT16) mask_length = 17;
else if(delta & UINT32_BIT15) mask_length = 16;
else if(delta & UINT32_BIT14) mask_length = 15;
else if(delta & UINT32_BIT13) mask_length = 14;
else if(delta & UINT32_BIT12) mask_length = 13;
else if(delta & UINT32_BIT11) mask_length = 12;
else if(delta & UINT32_BIT10) mask_length = 11;
else if(delta & UINT32_BIT9) mask_length = 10;
else if(delta & UINT32_BIT8) mask_length = 9;
else if(delta & UINT32_BIT7) mask_length = 8;
else if(delta & UINT32_BIT6) mask_length = 7;
else if(delta & UINT32_BIT5) mask_length = 6;
else if(delta & UINT32_BIT4) mask_length = 5;
else if(delta & UINT32_BIT3) mask_length = 4;
uint32_t maxx;
uint32_t minx;
if(r.x0 > r.x1)
{
maxx = r.x0;
minx = r.x1;
}
else if (r.x0 < r.x1)
{
maxx = r.x1;
minx = r.x0;
}
else
{
return false;
}
uint32_t mask;
mask = UINT32_C(0XFFFFFFFF) << (mask_length - 1);
uint32_t pivotx =maxx & mask;
left.x0 = minx;
left.x1 = pivotx - 1;
left.y0 = r.y0;
left.y1 = r.y1;
right.x0 = pivotx;
right.x1 = maxx;
right.y0 = r.y0;
right.y1 = r.y1;
return true;
}
bool dividey(Rectangle r, Rectangle& bottom, Rectangle& top)
{
uint32_t delta = r.y0 ^ r.y1;
short mask_length = 3;
if(delta & UINT32_BIT31) mask_length = 32;
else if(delta & UINT32_BIT30) mask_length = 31;
else if(delta & UINT32_BIT29) mask_length = 30;
else if(delta & UINT32_BIT28) mask_length = 29;
else if(delta & UINT32_BIT27) mask_length = 28;
else if(delta & UINT32_BIT26) mask_length = 27;
else if(delta & UINT32_BIT25) mask_length = 26;
else if(delta & UINT32_BIT24) mask_length = 25;
else if(delta & UINT32_BIT23) mask_length = 24;
else if(delta & UINT32_BIT22) mask_length = 23;
else if(delta & UINT32_BIT21) mask_length = 22;
else if(delta & UINT32_BIT20) mask_length = 21;
else if(delta & UINT32_BIT19) mask_length = 20;
else if(delta & UINT32_BIT18) mask_length = 19;
else if(delta & UINT32_BIT17) mask_length = 18;
else if(delta & UINT32_BIT16) mask_length = 17;
else if(delta & UINT32_BIT15) mask_length = 16;
else if(delta & UINT32_BIT14) mask_length = 15;
else if(delta & UINT32_BIT13) mask_length = 14;
else if(delta & UINT32_BIT12) mask_length = 13;
else if(delta & UINT32_BIT11) mask_length = 12;
else if(delta & UINT32_BIT10) mask_length = 11;
else if(delta & UINT32_BIT9) mask_length = 10;
else if(delta & UINT32_BIT8) mask_length = 9;
else if(delta & UINT32_BIT7) mask_length = 8;
else if(delta & UINT32_BIT6) mask_length = 7;
else if(delta & UINT32_BIT5) mask_length = 6;
else if(delta & UINT32_BIT4) mask_length = 5;
else if(delta & UINT32_BIT3) mask_length = 4;
uint32_t maxy;
uint32_t miny;
if(r.y0 > r.y1)
{
maxy = r.y0;
miny = r.y1;
}
else if (r.y0 < r.y1)
{
maxy = r.y1;
miny = r.y0;
}
else
{
return false;
}
uint32_t mask;
mask = UINT32_C(0XFFFFFFFF) << (mask_length - 1);
uint32_t pivoty =maxy & mask;
bottom.y0 = miny;
bottom.y1 = pivoty - 1;
bottom.x0 = r.x0;
bottom.x1 = r.x1;
top.y0 = pivoty;
top.y1 = maxy;
top.x0 = r.x0;
top.x1 = r.x1;
return true;
}
GeoBox makeGeoBox(Rectangle rect)
{
GeoBox result;
result.set_maskLength(0);
uint32_t minx,maxx,miny,maxy;
if(rect.x0 < rect.x1)
{
minx = rect.x0;
maxx = rect.x1;
} else {
minx = rect.x1;
maxx = rect.x0;
}
if(rect.y0 < rect.y1)
{
miny = rect.y0;
maxy = rect.y1;
} else {
miny = rect.y1;
maxy = rect.y0;
}
uint64_t minpos = mergeBits(minx, miny);
uint64_t maxpos = mergeBits(maxx, maxy);
uint64_t delta = minpos ^ maxpos;
short mask_length = 3;
if(delta & UINT64_BIT63) mask_length = 64;
else if(delta & UINT64_BIT62) mask_length = 63;
else if(delta & UINT64_BIT61) mask_length = 62;
else if(delta & UINT64_BIT60) mask_length = 61;
else if(delta & UINT64_BIT59) mask_length = 60;
else if(delta & UINT64_BIT58) mask_length = 59;
else if(delta & UINT64_BIT57) mask_length = 58;
else if(delta & UINT64_BIT56) mask_length = 57;
else if(delta & UINT64_BIT55) mask_length = 56;
else if(delta & UINT64_BIT54) mask_length = 55;
else if(delta & UINT64_BIT53) mask_length = 54;
else if(delta & UINT64_BIT52) mask_length = 53;
else if(delta & UINT64_BIT51) mask_length = 52;
else if(delta & UINT64_BIT50) mask_length = 51;
else if(delta & UINT64_BIT49) mask_length = 50;
else if(delta & UINT64_BIT48) mask_length = 49;
else if(delta & UINT64_BIT47) mask_length = 48;
else if(delta & UINT64_BIT46) mask_length = 47;
else if(delta & UINT64_BIT45) mask_length = 46;
else if(delta & UINT64_BIT44) mask_length = 45;
else if(delta & UINT64_BIT43) mask_length = 44;
else if(delta & UINT64_BIT42) mask_length = 43;
else if(delta & UINT64_BIT41) mask_length = 42;
else if(delta & UINT64_BIT40) mask_length = 41;
else if(delta & UINT64_BIT39) mask_length = 40;
else if(delta & UINT64_BIT38) mask_length = 39;
else if(delta & UINT64_BIT37) mask_length = 38;
else if(delta & UINT64_BIT36) mask_length = 37;
else if(delta & UINT64_BIT35) mask_length = 36;
else if(delta & UINT64_BIT34) mask_length = 35;
else if(delta & UINT64_BIT33) mask_length = 34;
else if(delta & UINT64_BIT32) mask_length = 33;
else if(delta & UINT64_BIT31) mask_length = 32;
else if(delta & UINT64_BIT30) mask_length = 31;
else if(delta & UINT64_BIT29) mask_length = 30;
else if(delta & UINT64_BIT28) mask_length = 29;
else if(delta & UINT64_BIT27) mask_length = 28;
else if(delta & UINT64_BIT26) mask_length = 27;
else if(delta & UINT64_BIT25) mask_length = 26;
else if(delta & UINT64_BIT24) mask_length = 25;
else if(delta & UINT64_BIT23) mask_length = 24;
else if(delta & UINT64_BIT22) mask_length = 23;
else if(delta & UINT64_BIT21) mask_length = 22;
else if(delta & UINT64_BIT20) mask_length = 21;
else if(delta & UINT64_BIT19) mask_length = 20;
else if(delta & UINT64_BIT18) mask_length = 19;
else if(delta & UINT64_BIT17) mask_length = 18;
else if(delta & UINT64_BIT16) mask_length = 17;
else if(delta & UINT64_BIT15) mask_length = 16;
else if(delta & UINT64_BIT14) mask_length = 15;
else if(delta & UINT64_BIT13) mask_length = 14;
else if(delta & UINT64_BIT12) mask_length = 13;
else if(delta & UINT64_BIT11) mask_length = 12;
else if(delta & UINT64_BIT10) mask_length = 11;
else if(delta & UINT64_BIT9) mask_length = 10;
else if(delta & UINT64_BIT8) mask_length = 9;
else if(delta & UINT64_BIT7) mask_length = 8;
else if(delta & UINT64_BIT6) mask_length = 7;
else if(delta & UINT64_BIT5) mask_length = 6;
else if(delta & UINT64_BIT4) mask_length = 5;
else if(delta & UINT64_BIT3) mask_length = 4;
uint64_t mask64 = UINT64_C(0XFFFFFFFFFFFFFFFF) << mask_length;
result.set_pos (minpos & mask64);
result.set_maskLength (mask_length);
return result;
}
GeoBox makeGeoBox(uint32_t x1, uint32_t y1)
{
GeoBox result;
result.set_maskLength(3);
result.set_pos(mergeBits(x1, y1));
return result;
}
Rectangle getRectangle(GeoBox& g)
{
Rectangle result;
result.x0 = getXmin(g);
result.y0 = getYmin(g);
result.x1 = getXmax(g);
result.y1 = getYmax(g);
return result;
}
GeoBoxSet makeGeoBoxSet(Rectangle rect)
{
GeoBoxSet result;
result.count = 0;
/*if(hasgoodMask(rect))
{
result.count = 1;
result.boxes[0] = makeGeoBox(rect);
return result;
}*/
Rectangle a,b,c,d,r[4];
short rcount = 0;
if(dividex(rect,a,b))
{
if(dividey(a,c,d))
{
r[rcount++] = c;
r[rcount++] = d;
}
else
{
r[rcount++] = a;
}
if(dividey(b,c,d))
{
r[rcount++] = c;
r[rcount++] = d;
}
else
{
r[rcount++] = b;
}
}
else
{
if(dividey(rect,a,b))
{
r[rcount++] = a;
r[rcount++] = b;
}
else
{
r[rcount++] = rect;
}
}
for(short i = 0; i < rcount; i++)
{
GeoBox g = makeGeoBox(r[i]);
bool alreadyExists = false;
for(short j = 0; j < result.count; j++)
{
if(geoBoxContains(&(result.boxes[j]), &g)) alreadyExists = true;
else if(geoBoxContains(&g, &(result.boxes[j])))
{
result.boxes[j] = g;
alreadyExists = true;
}
}
if(!alreadyExists) result.boxes[result.count++] = g;
}
return result;
}