m_proj.c

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/* This file is part of the 'atomes' software
 
'atomes' is free software: you can redistribute it and/or modify it under the terms
of the GNU Affero General Public License as published by the Free Software Foundation,
either version 3 of the License, or (at your option) any later version.
 
'atomes' is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
 
You should have received a copy of the GNU Affero General Public License along with 'atomes'.
If not, see <https://www.gnu.org/licenses/>
 
Copyright (C) 2022-2026 by CNRS and University of Strasbourg */

 
/*
* This file: 'm_proj.c'
*
* Contains:
*
 
 - The functions to create the 'View -> Projection' submenu
 
*
* List of functions:
 
  G_MODULE_EXPORT void set_camera_pos (GtkWidget * widg, gpointer data);
  G_MODULE_EXPORT void to_set_camera_pos (GSimpleAction * action, GVariant * parameter, gpointer data);
 
  GtkWidget * menu_proj (glwin * view);
 
  GMenu * menu_proj (glwin * view, int popm);
 
*/
 
#include "global.h"
#include "glview.h"
#include "glwindow.h"
#include "preferences.h"

enum position {
  RIGHT  = 0, 
  LEFT   = 1, 
  TOP    = 2, 
  BOTTOM = 3, 
  FRONT  = 4, 
  BACK   = 5  
};
 
extern void camera_has_changed (gdouble value, gpointer data);

G_MODULE_EXPORT void set_camera_pos (GtkWidget * widg, gpointer data)
{
  tint * id = (tint *)data;
  double angle_x, angle_y;
  switch (id -> b)
  {
    case RIGHT:
      angle_x = 0.0;
      angle_y = -90.0;
      break;
    case LEFT:
      angle_x = 0.0;
      angle_y = 90.0;
      break;
    case TOP:
      angle_x = 90.0;
      angle_y = 0.0;
      break;
    case BOTTOM:
      angle_x = -90.0;
      angle_y =  0.0;
      break;
    case FRONT:
      angle_x = 0.0;
      angle_y = 0.0;
      break;
    case BACK:
      angle_x = 0.0;
      angle_y = 180.0;
      break;
  }
  if (preferences)
  {
    camera_has_changed (angle_x, & pref_pointer[3]);
    camera_has_changed (angle_y, & pref_pointer[4]);
  }
  else
  {
    vec4_t q_a, q_b;
    vec3_t axis;
    axis.x = 0.0;
    axis.y = 1.0;
    axis.z = 0.0;
    q_a = axis_to_quat (axis, -pi*angle_y/180.0);
    axis.x = 1.0;
    axis.y = 0.0;
    axis.z = 0.0;
    q_b = axis_to_quat (axis, -pi*angle_x/180.0);
    glwin * view = get_project_by_id(id -> a) -> modelgl;
    view -> anim -> last -> img -> rotation_quaternion = q4_mul (q_a, q_b);
    update (view);
    view -> anim -> last -> img -> c_angle[0] = - angle_x;
    view -> anim -> last -> img -> c_angle[1] = - angle_y;
    int i;
    for (i=0; i<2; i++)
    {
      if (view -> rep_win)
      {
        if (view -> rep_win -> camera_widg[i+3] && GTK_IS_WIDGET(view -> rep_win -> camera_widg[i+3]))
        {
          gtk_spin_button_set_value ((GtkSpinButton *)view -> rep_win -> camera_widg[i+3], view -> anim -> last -> img -> c_angle[i]);
        }
      }
    }
  }
}
 
#ifdef GTK3
GtkWidget * menu_proj (glwin * view)
{
  GtkWidget * menup = gtk_menu_new ();
  GtkWidget * r = create_menu_item (FALSE, _("Right [1, 0, 0]"));
  g_signal_connect (G_OBJECT (r), "activate", G_CALLBACK(set_camera_pos), & view -> colorp[RIGHT][0]);
  gtk_menu_shell_append ((GtkMenuShell *)menup, r);
  GtkWidget * l = create_menu_item (FALSE, _("Left [-1, 0, 0]"));
  g_signal_connect (G_OBJECT (l), "activate", G_CALLBACK(set_camera_pos), & view -> colorp[LEFT][0]);
  gtk_menu_shell_append ((GtkMenuShell *)menup, l);
  GtkWidget * t = create_menu_item (FALSE, _("Top [0, 1, 0]"));
  g_signal_connect (G_OBJECT (t), "activate", G_CALLBACK(set_camera_pos), & view -> colorp[TOP][0]);
  gtk_menu_shell_append ((GtkMenuShell *)menup, t);
  GtkWidget * b = create_menu_item (FALSE, _("Bottom [0, -1, 0]"));
  g_signal_connect (G_OBJECT (b), "activate", G_CALLBACK(set_camera_pos), & view -> colorp[BOTTOM][0]);
  gtk_menu_shell_append ((GtkMenuShell *)menup, b);
  GtkWidget * f = create_menu_item (FALSE, _("Front [0, 0, 1]"));
  g_signal_connect (G_OBJECT (f), "activate", G_CALLBACK(set_camera_pos), & view -> colorp[FRONT][0]);
  gtk_menu_shell_append ((GtkMenuShell *)menup, f);
  GtkWidget * a = create_menu_item (FALSE, _("Back [0, 0, -1]"));
  g_signal_connect (G_OBJECT (a), "activate", G_CALLBACK(set_camera_pos), & view -> colorp[BACK][0]);
  gtk_menu_shell_append ((GtkMenuShell *)menup, a);
 
  return menup;
}
#else
G_MODULE_EXPORT void to_set_camera_pos (GSimpleAction * action, GVariant * parameter, gpointer data)
{
  set_camera_pos (NULL, data);
}

GMenu * menu_proj (glwin * view, int popm)
{
  GMenu * menu = g_menu_new ();
  gchar * projection[6]={i18n("Right [1, 0, 0]"), 
                         i18n("Left [-1, 0, 0]"), 
                         i18n("Top [0, 1, 0]"), 
                         i18n("Bottom [0, -1, 0]"), 
                         i18n("Front [0, 0, 1]"), 
                         i18n("Back [0, 0, -1]")};
  int i;
  for (i=0; i<6; i++)
  {
    append_opengl_item (view, menu, _(projection[i]), "proj", popm, i, NULL, IMG_NONE, NULL, FALSE, G_CALLBACK(to_set_camera_pos), & view -> colorp[i][0], FALSE, FALSE, FALSE, TRUE);
  }
  return menu;
}
#endif