C Structure Definitions
// TIN file header
| typedef struct { |
| char RecogStr[4] ; // Recognition "TTIN" |
| UINT RecogVal ; // Recognition 20101221 |
| UINT Version ; // Version 1 |
| UINT HdrSize ; // Header size = sizeof(SurfHdr) |
| UINT PntCnt ; // Number of points |
| UINT PntSize ; // Size of each point 12 |
| UINT TriCnt ; // Number of triangles |
| UINT TriSize ; // Size of each triangle 28 |
| char Desc[40] ; // Descriptive name for surface |
| char Software[40] ; // Software which generated the file |
| UINT Type ; // Surface type (0=ground,1=design,2=bedrock,..) |
| UINT CoordSize ; // Number of integer steps per real world unit |
| double OrgX ; // Origin of coordinate system |
| double OrgY ; |
| double OrgZ ; |
| UINT64 PntPos ; // File position where point data starts |
| UINT64 TriPos ; // File position where triangle data starts |
} TinHdr ;
// TIN file point record
| typedef struct { |
| long X ; |
| long Y ; |
| long Z ; |
| BYTE Break ; // Break line edge with previous point |
| BYTE Type ; // Point type TINPT_xxxx |
} TinPnt ;
// TIN file triangle record
| typedef struct { |
| UINT Vertex[3] ; // Triangle vertices in clockwise order |
| UINT Neigbour[3]; // Neighbour triangle indexes |
| BYTE Flags ; // Bits 0-1:excluded,2-3:edge0,4-5:edge1,6-7:edge2 |
| BYTE Domain ; // Region or land type |
} TinTri ;
// Point types
#define TINPT_RANDOM 0
#define TINPT_SOFTBRK 1
#define TINPT_HARDBRK 2
#define TINPT_CONTOUR 3
#define TINPT_INFERRED 4
#define TINPT_OUTBND 5
#define TINPT_INTBND 6
