/src/gdal/frmts/pcraster/libcsf/cellsize.c
Line | Count | Source |
1 | | #include "csf.h" |
2 | | #include "csfimpl.h" |
3 | | |
4 | | /* global header (opt.) and cellsize's prototypes "" */ |
5 | | |
6 | | |
7 | | /* headers of this app. modules called */ |
8 | | |
9 | | /***************/ |
10 | | /* EXTERNALS */ |
11 | | /***************/ |
12 | | |
13 | | /**********************/ |
14 | | /* LOCAL DECLARATIONS */ |
15 | | /**********************/ |
16 | | |
17 | | /*********************/ |
18 | | /* LOCAL DEFINITIONS */ |
19 | | /*********************/ |
20 | | |
21 | | /******************/ |
22 | | /* IMPLEMENTATION */ |
23 | | /******************/ |
24 | | |
25 | | |
26 | | /* get cell size |
27 | | * returns the cell size or -1 in case of an error |
28 | | * |
29 | | * Merrno |
30 | | * ILL_CELLSIZE |
31 | | * ILLHANDLE |
32 | | */ |
33 | | REAL8 RgetCellSize( |
34 | | const MAP *map) /* map handle */ |
35 | 1 | { |
36 | 1 | CHECKHANDLE(map); |
37 | 1 | if ( map->raster.cellSize != map->raster.cellSizeDupl) |
38 | 1 | { |
39 | 1 | M_ERROR(ILL_CELLSIZE); |
40 | 1 | return -1; |
41 | 1 | } |
42 | | |
43 | 0 | return(map->raster.cellSize); |
44 | 1 | } |
45 | | |
46 | | /* put cell size |
47 | | * returns the new cell size or -1 |
48 | | * in case of an error. |
49 | | * |
50 | | * Merrno |
51 | | * ILLHANDLE |
52 | | * NOACCESS |
53 | | * ILL_CELLSIZE |
54 | | */ |
55 | | REAL8 RputCellSize( |
56 | | MAP *map, /* map handle */ |
57 | | REAL8 cellSize) /* new cell size */ |
58 | 0 | { |
59 | 0 | CHECKHANDLE_GOTO(map, error); |
60 | 0 | if(! WRITE_ENABLE(map)) |
61 | 0 | { |
62 | 0 | M_ERROR(NOACCESS); |
63 | 0 | goto error; |
64 | 0 | } |
65 | 0 | if (cellSize <= 0.0) |
66 | 0 | { |
67 | 0 | M_ERROR(ILL_CELLSIZE); |
68 | 0 | goto error; |
69 | 0 | } |
70 | 0 | map->raster.cellSize = cellSize; |
71 | 0 | map->raster.cellSizeDupl = cellSize; |
72 | 0 | return(cellSize); |
73 | 0 | error: return(-1.0); |
74 | 0 | } |