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AK: Add to_radians and to_degrees math functions

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Bastiaan van der Plaat 2023-09-09 14:43:39 +02:00 • committed by Sam Atkins
parent 9b7aa8f6b6
commit 494a8cb816
15 changed files with 40 additions and 40 deletions
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16
Userland/Applications/Maps/MapWidget.cpp
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@ -11,16 +11,6 @@
#include <LibProtocol/Request.h>
// Math helpers
static double radians(double degrees)
{
return degrees * M_PI / 180.0;
}
static double degrees(double radians)
{
return radians * 180.0 / M_PI;
}
// https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames#Pseudo-code
static double longitude_to_tile_x(double longitude, int zoom)
{
@ -29,7 +19,7 @@ static double longitude_to_tile_x(double longitude, int zoom)
static double latitude_to_tile_y(double latitude, int zoom)
{
return pow(2, zoom) * (1.0 - (log(tan(radians(latitude)) + (1.0 / cos(radians(latitude)))) / M_PI)) / 2.0;
return pow(2, zoom) * (1.0 - (log(tan(AK::to_radians(latitude)) + (1.0 / cos(AK::to_radians(latitude)))) / M_PI)) / 2.0;
}
static double tile_x_to_longitude(double x, int zoom)
@ -39,7 +29,7 @@ static double tile_x_to_longitude(double x, int zoom)
static double tile_y_to_latitude(double y, int zoom)
{
return degrees(atan(sinh(M_PI * (1.0 - 2.0 * y / pow(2, zoom)))));
return AK::to_degrees(atan(sinh(M_PI * (1.0 - 2.0 * y / pow(2, zoom)))));
}
static double nice_round_number(double number)
@ -52,7 +42,7 @@ static double nice_round_number(double number)
double MapWidget::LatLng::distance_to(LatLng const& other) const
{
double const earth_radius = 6371000.0;
return earth_radius * 2.0 * asin(sqrt(pow(sin((radians(other.latitude) - radians(latitude)) / 2.0), 2.0) + cos(radians(latitude)) * cos(radians(other.latitude)) * pow(sin((radians(other.longitude) - radians(longitude)) / 2.0), 2.0)));
return earth_radius * 2.0 * asin(sqrt(pow(sin((AK::to_radians(other.latitude) - AK::to_radians(latitude)) / 2.0), 2.0) + cos(AK::to_radians(latitude)) * cos(AK::to_radians(other.latitude)) * pow(sin((AK::to_radians(other.longitude) - AK::to_radians(longitude)) / 2.0), 2.0)));
}
// MapWidget class