src/view/inertial_camera.h

   1 /* Copyright (c) 2014 Samsung Electronics Co., Ltd All Rights Reserved
   2  *
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at
   6  *
   7  * http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #ifndef __MAPS_VIEW_INERTIAL_CAMERA_H__
  17 #define __MAPS_VIEW_INERTIAL_CAMERA_H__
  18
  19
  20 #include "maps_view.h"
  21
  22 namespace view
  23 {
  24         class inertial_camera {
  25         protected:
  26                 maps_view_h _view;
  27
  28                 /* Targets */
  29                 double target_zoom_factor;
  30                 double target_rotation_angle;
  31                 maps_coordinates_h target_center;
  32
  33                 /* Current state of transition (or begining) */
  34                 double cur_zoom_factor;
  35                 double cur_rotation_angle;
  36                 maps_coordinates_h cur_center;
  37
  38                 /* Is transition performing right now */
  39                 bool transiting;
  40         protected:
  41 #if (__cplusplus >= 201103L)
  42                 static constexpr double __GEO_ACCURACY = 0.00001;
  43                 static constexpr double __ZOOM_ACCURACY = 0.1;
  44                 static constexpr double __ROTATE_ACCURACY = 0.5;
  45 #else
  46                 static const double __GEO_ACCURACY = 0.00001;
  47                 static const double __ZOOM_ACCURACY = 0.1;
  48                 static const double __ROTATE_ACCURACY = 0.5;
  49 #endif
  50         public:
  51                 inertial_camera(maps_view_h view);
  52                 ~inertial_camera();
  53         private:
  54                 inertial_camera(const inertial_camera &src);
  55                 inertial_camera &operator=(const inertial_camera &src);
  56         public:
  57                 void set_targets(const maps_coordinates_h center,
  58                                  const double &zoom_factor,
  59                                  const double &rotation_angle);
  60                 void set_center_target(const maps_coordinates_h center);
  61                 void set_zoom_target(const double &zoom_factor);
  62                 void set_rotation_target(const double &rotation_angle);
  63
  64                 bool next_transition_step();
  65
  66                 bool is_transiting() const { return transiting; }
  67                 void set_transiting(bool b) { transiting = b; }
  68                 maps_coordinates_h get_cur_center() const { return cur_center; }
  69                 double get_cur_zoom_factor() const { return cur_zoom_factor; }
  70                 double get_cur_rotation_angle() const {
  71                         return cur_rotation_angle; }
  72
  73         protected:
  74                 double calc_next_step(const double &start,
  75                                      const double &finish,
  76                                      const double step_ratio) const;
  77                 double calc_next_step_lon(const double &start,
  78                                      const double &finish,
  79                                      const double step_ratio) const;
  80                 void set_cur_state();
  81         };
  82 };
  83
  84 #endif /* __MAPS_VIEW_INERTIAL_CAMERA_H__ */