#include "globals.h"
#include "vikslippymapsource.h"
+#include "maputils.h"
static gboolean _coord_to_mapcoord ( VikMapSource *self, const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest );
static void _mapcoord_to_center_coord ( VikMapSource *self, MapCoord *src, VikCoord *dest );
object_class->finalize = vik_slippy_map_source_finalize;
}
-/* 1 << (x) is like a 2**(x) */
-#define GZ(x) ((1<<(x)))
-
-static const gdouble scale_mpps[] = { GZ(0), GZ(1), GZ(2), GZ(3), GZ(4), GZ(5), GZ(6), GZ(7), GZ(8), GZ(9),
- GZ(10), GZ(11), GZ(12), GZ(13), GZ(14), GZ(15), GZ(16), GZ(17) };
-
-static const gint num_scales = (sizeof(scale_mpps) / sizeof(scale_mpps[0]));
-
-static const gdouble scale_neg_mpps[] = { 1.0/GZ(0), 1.0/GZ(1), 1.0/GZ(2), 1.0/GZ(3) };
-static const gint num_scales_neg = (sizeof(scale_neg_mpps) / sizeof(scale_neg_mpps[0]));
-
-#define ERROR_MARGIN 0.01
-gint
-vik_slippy_map_source_zoom_to_scale ( gdouble mpp ) {
- gint i;
- for ( i = 0; i < num_scales; i++ ) {
- if ( ABS(scale_mpps[i] - mpp) < ERROR_MARGIN ) {
- return i;
- }
- }
- for ( i = 0; i < num_scales_neg; i++ ) {
- if ( ABS(scale_neg_mpps[i] - mpp) < 0.000001 ) {
- return -i;
- }
- }
-
- return 255;
-}
-
gboolean
_is_direct_file_access (VikMapSource *self)
{
if ( xzoom != yzoom )
return FALSE;
- dest->scale = vik_slippy_map_source_zoom_to_scale ( xzoom );
+ dest->scale = map_utils_mpp_to_scale ( xzoom );
if ( dest->scale == 255 )
return FALSE;
- dest->x = (src->east_west + 180) / 360 * GZ(17) / xzoom;
- dest->y = (180 - MERCLAT(src->north_south)) / 360 * GZ(17) / xzoom;
+ dest->x = (src->east_west + 180) / 360 * VIK_GZ(17) / xzoom;
+ dest->y = (180 - MERCLAT(src->north_south)) / 360 * VIK_GZ(17) / xzoom;
dest->z = 0;
return TRUE;
{
gdouble socalled_mpp;
if (src->scale >= 0)
- socalled_mpp = GZ(src->scale);
+ socalled_mpp = VIK_GZ(src->scale);
else
- socalled_mpp = 1.0/GZ(-src->scale);
+ socalled_mpp = 1.0/VIK_GZ(-src->scale);
dest->mode = VIK_COORD_LATLON;
- dest->east_west = ((src->x+0.5) / GZ(17) * socalled_mpp * 360) - 180;
- dest->north_south = DEMERCLAT(180 - ((src->y+0.5) / GZ(17) * socalled_mpp * 360));
+ dest->east_west = ((src->x+0.5) / VIK_GZ(17) * socalled_mpp * 360) - 180;
+ dest->north_south = DEMERCLAT(180 - ((src->y+0.5) / VIK_GZ(17) * socalled_mpp * 360));
}
static gchar *