Go to the documentation of this file.00001
00017 #include <grass/gis.h>
00018
00019
00033 int G_adjust_window_to_box(const struct Cell_head *src,
00034 struct Cell_head *dst, int rows, int cols)
00035 {
00036 double ew, ns;
00037
00038 G_copy((char *)dst, (char *)src, sizeof(*dst));
00039
00040
00041 ns = (src->ns_res * src->rows) / rows;
00042 ew = (src->ew_res * src->cols) / cols;
00043
00044
00045 if (ns > ew)
00046 ew = ns;
00047 else
00048 ns = ew;
00049
00050 dst->ns_res = ns;
00051 dst->ew_res = ew;
00052
00053
00054 dst->rows = (dst->north - dst->south) / dst->ns_res;
00055 dst->cols = (dst->east - dst->west) / dst->ew_res;
00056
00057 return 0;
00058 }