| // Copyright 2005 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS-IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| |
| // Author: ericv@google.com (Eric Veach) |
| |
| #include "s2/s1angle.h" |
| |
| #include <cmath> |
| #include <cstdio> |
| #include <ostream> |
| |
| #include "s2/s2latlng.h" |
| |
| S1Angle::S1Angle(S2Point const& x, S2Point const& y) : radians_(x.Angle(y)) {} |
| |
| S1Angle::S1Angle(S2LatLng const& x, S2LatLng const& y) |
| : radians_(x.GetDistance(y).radians()) {} |
| |
| S1Angle S1Angle::Normalized() const { |
| S1Angle a(radians_); |
| a.Normalize(); |
| return a; |
| } |
| |
| void S1Angle::Normalize() { |
| radians_ = remainder(radians_, 2.0 * M_PI); |
| if (radians_ <= -M_PI) |
| radians_ = M_PI; |
| } |
| |
| std::ostream& operator<<(std::ostream& os, S1Angle a) { |
| double degrees = a.degrees(); |
| char buffer[13]; |
| int sz = snprintf(buffer, sizeof(buffer), "%.7f", degrees); |
| if (sz >= 0 && sz < sizeof(buffer)) { |
| return os << buffer; |
| } else { |
| return os << degrees; |
| } |
| } |