Method draw

octovis/src/SelectionBox.cpp:77–215

}

void SelectionBox::draw(bool withNames){


  // set min/max new from grabbed frame:
  for (unsigned i = 0; i < m_frames.size(); ++i){
    if (frame(i)->grabsMouse()){
      qglviewer::Vec f = frame(i)->position();

      unsigned oi = i+3;
      float corr = m_arrowLength/2.0;
      if (i >= 3){
        oi = i-3;
        corr *= -1;
      }

      qglviewer::Vec fo = frame(oi)->position();

      unsigned ci = i%3;
      m_minPt[ci] = std::min(f[ci] - corr, fo[ci] + corr);
      m_maxPt[ci] = std::max(f[ci] - corr, fo[ci] + corr);
    }
  }

  // draw box:

  glEnable(GL_LINE_SMOOTH);
  glLineWidth(2.);
  glDisable(GL_LIGHTING);
  glColor3f(0.9,0.0, 0.0);
  glBegin(GL_LINE_LOOP); // Start drawing a line primitive
  glVertex3f(m_minPt.x, m_minPt.y, m_minPt.z);
  glVertex3f(m_maxPt.x, m_minPt.y, m_minPt.z);
  glVertex3f(m_maxPt.x, m_maxPt.y, m_minPt.z);
  glVertex3f(m_minPt.x, m_maxPt.y, m_minPt.z);
  glEnd();

  glBegin(GL_LINE_LOOP);
  glVertex3f(m_minPt.x, m_minPt.y, m_maxPt.z);
  glVertex3f(m_maxPt.x, m_minPt.y, m_maxPt.z);
  glVertex3f(m_maxPt.x, m_maxPt.y, m_maxPt.z);
  glVertex3f(m_minPt.x, m_maxPt.y, m_maxPt.z);
  //	  glVertex3f(-1.0f, -1.0f, 0.0f); // The bottom left corner
  //	  glVertex3f(-1.0f, 1.0f, 0.0f); // The top left corner
  //	  glVertex3f(1.0f, 1.0f, 0.0f); // The top right corner
  //	  glVertex3f(1.0f, -1.0f, 0.0f); // The bottom right corner
  glEnd();

  glBegin(GL_LINES);
  glVertex3f(m_minPt.x, m_minPt.y, m_minPt.z);
  glVertex3f(m_minPt.x, m_minPt.y, m_maxPt.z);

  glVertex3f(m_maxPt.x, m_minPt.y, m_minPt.z);
  glVertex3f(m_maxPt.x, m_minPt.y, m_maxPt.z);

  glVertex3f(m_maxPt.x, m_maxPt.y, m_minPt.z);
  glVertex3f(m_maxPt.x, m_maxPt.y, m_maxPt.z);

  glVertex3f(m_minPt.x, m_maxPt.y, m_minPt.z);