source/designer/rotatetool.cpp

   1 #include "rotatetool.h"
   2
   3 using namespace std;
   4 using namespace Msp;
   5 using namespace R2C2;
   6
   7 RotateTool::RotateTool(Designer &d, Input::Keyboard &k, Input::Mouse &m, const set<Object *> &o):
   8         Manipulator(d, k, m, o),
   9         origin(Geometry::atan2(ground_pointer.y-center.y, ground_pointer.x-center.x))
  10 { }
  11
  12 void RotateTool::pointer_motion()
  13 {
  14         Angle a = Geometry::atan2(ground_pointer.y-center.y, ground_pointer.x-center.x);
  15         angle += a-origin;
  16         origin = a;
  17
  18         Transform trans = Transform::rotation(angle, Vector(0, 0, 1));
  19         for(ObjectArray::iterator i=objects.begin(); i!=objects.end(); ++i)
  20         {
  21                 i->object->set_position(center+trans.transform(i->original_position));
  22                 i->object->set_rotation(angle+i->original_rotation);
  23         }
  24 }