Fix camera positioning in scatter plot widget.

qpvt/src/widgets/scatter_plot_widget.cpp

@@ -44,9 +44,16 @@ scatter_plot_widget::scatter_plot_widget (QWidget* p_parent)
 , mp_viewer_frame           (new QFrame                      ())
 , mp_grid_layout            (new QGridLayout                 ())
 {
+  mp_camera->set_lambda  (0    );
+  mp_camera->set_phi     (0    );
+  mp_camera->set_distance(10   );
+  mp_camera->set_near    (0.01 );
+  mp_camera->set_far     (10000);
+  mp_camera->set_coi     (Eigen::Vector3f(0, 0, 0));
+
   mp_scene        ->add_renderable  (mp_renderable_scatter_plot.get());
   mp_viewer_widget->set_scene       (mp_scene.get());
-  mp_viewer_widget->set_clear_color (1.0, 1.0, 1.0, 1.0);
+  //mp_viewer_widget->set_clear_color (1.0, 1.0, 1.0, 1.0);
 
   mp_viewer_frame = new QFrame;
   mp_viewer_frame ->setLayout                   (new QHBoxLayout       );
@@ -60,11 +67,11 @@ scatter_plot_widget::scatter_plot_widget (QWidget* p_parent)
   setMinimumSize(256, 256);
 
   // TODO: Set renderable scatter plot entries from actual data. 
-  for (auto i = 0; i < 100; i++)
+  for (auto i = 0; i < 250; i++)
     mp_renderable_scatter_plot->add_entry({Eigen::Vector3f(
-      static_cast <float> (rand()) / static_cast <float> (RAND_MAX), 
-      static_cast <float> (rand()) / static_cast <float> (RAND_MAX), 
-      0.0), false });
+      2 * (static_cast <float> (rand()) / static_cast <float> (RAND_MAX) - 0.5), 
+      2 * (static_cast <float> (rand()) / static_cast <float> (RAND_MAX) - 0.5), 
+      2 * (static_cast <float> (rand()) / static_cast <float> (RAND_MAX) - 0.5)), false });
 
   // Handle resize: Get device pixel ratio and apply to clickable scene size.
   QObject::connect(mp_viewer_widget, &viewer_widget::resized, [&]()