diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Panorama.cxx | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/src/Panorama.cxx b/src/Panorama.cxx index 74595f7..8def1d9 100644 --- a/src/Panorama.cxx +++ b/src/Panorama.cxx @@ -232,7 +232,7 @@ int Panorama::comp_params(Hill *m1, Hill *m2) { Hill *tmp; double a_center_tmp, scale_tmp, a_nick_tmp; - + if (m1->x > m2->x) { tmp = m1; m1 = m2; @@ -304,17 +304,17 @@ Panorama::optimize(Hill *m1, Hill *m2) { a_nick = atan(tan_nick_view); a_center = atan(tan_dir_view); - - if (a_center > pi_d) { + + if (a_center > 2.0 * pi_d) { a_center = a_center - 2.0 * pi_d; - } else if (a_center < -pi_d) { + } else if (a_center < 0.0) { a_center = a_center + 2.0 * pi_d; } - + // atan(tan_dir_view) is not the only possible solution. // Choose the one which is close to m1->alph. if (fabs(a_center - m1->alph) > pi_d/2.0) { - a_center = a_center + pi_d; + a_center = a_center + pi_d; } scale = n_scale; @@ -590,14 +590,28 @@ Panorama::alpha(double phi, double lam) { double Panorama::comp_center_angle(double a1, double a2, double d1, double d2) { double sign1 = 1.0; - double tan_acenter, tan_a1, tan_a2; + double tan_acenter, tan_a1, tan_a2, a_center; tan_a1 = tan(a1); tan_a2 = tan(a2); tan_acenter = (((pow(((pow((1.0 + (tan_a1 * tan_a2)), 2.0) * ((d1 * d1) + (d2 * d2))) + (2.0 * d1 * d2 * ((2.0 * ((tan_a2 * tan_a1) - (tan_a2 * tan_a2))) - ((tan_a1 * tan_a1) * (2.0 + (tan_a2 * tan_a2))) - 1.0))), (1.0 / 2.0)) * sign1) + ((1.0 - (tan_a1 * tan_a2)) * (d1 - d2))) / (2.0 * ((d2 * tan_a2) - (d1 * tan_a1)))); - - return atan(tan_acenter) - pi_d; + + a_center = atan(tan_acenter); + + if (a_center > 2.0 * pi_d) { + a_center = a_center - 2.0 * pi_d; + } else if (a_center < 0.0) { + a_center = a_center + 2.0 * pi_d; + } + + // atan(tan_dir_view) is not the only possible solution. + // Choose the one which is close to m1->alph. + if (fabs(a_center - a1) > pi_d/2.0) { + a_center = a_center + pi_d; + } + + return a_center; } double |