int
Cam_int::zoom2(
CEvent &e,
State *&
)
{
if (debug_fsa)
cerr << "Cam_int::zoom2"
<< endl;
DEVice_2d *ptr = (DEVice_2d *)e._d;
CAMptr cam (e.view()->cam());
PIXEL curpt (ptr->cur());
XYpt startpt(_start_pix);
int w,h; e.view()->get_size(w,h);
double zoom_factor = 1 + Sign(ptr->delta()[0]) *
(PIXEL(ptr->cur())-PIXEL(ptr->old())).length()/(w/4);
cam->set_zoom(cam->zoom() * zoom_factor);
cam->set_min (cam->min() + NDCvec(XYpt(_start_pix) - startpt));
ptr->set_cur(curpt);
cam->data()->changed();
return 0;
}
int
Cam_int_edit::pan2(
CEvent &e,
State *&
)
{
DEVice_2d *ptr=(DEVice_2d *)e._d;
CAMptr cam (e.view()->cam());
PIXEL curpt(ptr->cur());
cam->set_min(cam->min() + NDCvec(ptr->delta()));
cam->data()->changed();
ptr->set_cur(curpt);
return 0;
}
int
Cam_int::pan2(
CEvent &e,
State *&
)
{
if (debug_fsa)
cerr << "Cam_int::pan2"
<< endl;
DEVice_2d *ptr=(DEVice_2d *)e._d;
CAMptr cam (e.view()->cam());
PIXEL curpt(ptr->cur());
cam->set_min(cam->min() + NDCvec(ptr->delta()));
cam->data()->changed();
ptr->set_cur(curpt);
return 0;
}