source/designer/measure.h

   1 #ifndef MEASURE_H_
   2 #define MEASURE_H_
   3
   4 #include <sigc++/sigc++.h>
   5 #include <msp/gl/renderable.h>
   6 #include "libr2c2/geometry.h"
   7
   8 class Designer;
   9
  10 class Measure: public Msp::GL::Renderable
  11 {
  12 private:
  13         enum State
  14         {
  15                 NONE,
  16                 STARTING,
  17                 ACTIVE
  18         };
  19
  20 public:
  21         sigc::signal<void> signal_done;
  22         sigc::signal<void> signal_changed;
  23
  24 private:
  25         Designer &designer;
  26         R2C2::Vector pointer;
  27         R2C2::Snap ssnap;
  28         float par_dist;
  29         float perp_dist;
  30         R2C2::Angle adiff;
  31         State state;
  32         Msp::GL::Mesh mesh;
  33
  34 public:
  35         Measure(Designer &);
  36         float get_parallel_distance() const { return par_dist; }
  37         float get_perpendicular_distance() const { return perp_dist; }
  38         const R2C2::Angle &get_angle_difference() const { return adiff; }
  39         void start();
  40         void button_press(float, float, unsigned);
  41         void pointer_motion(float, float);
  42         virtual void render(Msp::GL::Renderer &, const Msp::GL::Tag &) const;
  43 private:
  44         void update_mesh();
  45         void snap_to_tracks(R2C2::Snap &);
  46 };
  47
  48 #endif