Method UpdateObjectView

editor/WorldObjectsGenericDialog.cpp:1122–1208

#define NUM_ANIM_FRAMES 30

void CWorldObjectsGenericDialog::UpdateObjectView(void) {
  CWnd *objwnd;
  RECT rect;
  int x, y, bm_handle, w, h;
  static int frame = 0, spin_frame = 0;
  static int last_object = -1;
  static int last_render_handle = -1;
  static int object_dir = 0;

  if (m_current == -1)
    return;

  if (object_dir == 0) {
    frame++;
    if (frame == NUM_ANIM_FRAMES) {
      frame = NUM_ANIM_FRAMES - 1;
      object_dir = 1;
    }
  } else {
    frame--;
    if (frame == -1) {
      frame = 0;
      object_dir = 0;
    }
  }

  objwnd = GetDlgItem(IDC_GENERIC_OBJECTVIEW);
  objwnd->GetWindowRect(&rect);
  ScreenToClient(&rect);

  Desktop_surf->attach_to_window((unsigned)m_hWnd);

  w = rect.right - rect.left;
  h = rect.bottom - rect.top;

  int render_handle;

  if (m_lod == 0)
    render_handle = Object_info[m_current].render_handle;
  else if (m_lod == 1)
    render_handle = Object_info[m_current].med_render_handle;
  else
    render_handle = Object_info[m_current].lo_render_handle;

  if (last_object != m_current || last_render_handle != render_handle) {
    Desktop_surf->clear(rect.left, rect.top, w, h);
    last_object = m_current;
    last_render_handle = render_handle;
  }

  bm_handle = render_handle;

  if (bm_handle == -1)
    return;

  vector zero_vector;
  vector view_vector = {0, 0, -20};
  matrix id_matrix, rot_matrix;