diff options
| -rw-r--r-- | src/Panorama.cxx | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/Panorama.cxx b/src/Panorama.cxx index b1d42d3..cfdfb22 100644 --- a/src/Panorama.cxx +++ b/src/Panorama.cxx @@ -35,6 +35,9 @@ Panorama::Panorama() { view_height = 0.0; proj = NULL; set_projection(ProjectionLSQ::RECTILINEAR); + + +fprintf(stderr, "=> %f, %f\n", get_earth_radius(0.0), get_earth_radius(pi_d/2.0)); } Panorama::~Panorama() { @@ -474,14 +477,11 @@ double Panorama::get_earth_radius(double phi) { double a = 6378137.000; double b = 6356752.315; - double x, y, r; - - x = a*b*pow(pow(a,2)*pow(tan(phi),2)+pow(b,2),-1.0/2.0); - y = a*b*tan(phi)*pow(pow(a,2)*pow(tan(phi),2)+pow(b,2),-1.0/2.0); + double r; + double ata = tan(phi); - r = sqrt(pow(x, 2) + pow(y, 2)); + r = a*pow(pow(ata,2)+1,1.0/2.0)*fabs(b)*pow(pow(b,2)+pow(a,2)*pow(ata,2),-1.0/2.0); - fprintf(stderr, "==> %f %f %f %f\n", phi, x, y, r); return r; } |