node editor: draw slot dots

src/gui/node_editor.h

@@ -134,12 +134,17 @@ public:
                     draw_list->AddRectFilled(upper_left, lower_right, ImColor(60, 60, 60), 4.0f);
                     draw_list->AddRect(upper_left, lower_right, ImColor(100, 100, 100), 4.0f);
 
-                    // for (int i=0; i<N; i++) {
-                    //     auto position = node.bbox.pos;
-                    //     position.y += (i+1) * (node.bbox.size.y)/(N+1);
+                    // -- Draw the connection dots
+                    for (int i=0; i<node.n_slots_in; i++) {
+                        auto position = node.slot_location(GuiNode::IN, i);
+                        draw_list->AddCircleFilled(offset + position, 4.0f, ImColor(150, 150, 150, 150));
+                    }
+
+                    for (int i=0; i<node.n_slots_out; i++) {
+                        auto position = node.slot_location(GuiNode::OUT, i);
+                        draw_list->AddCircleFilled(offset + position, 4.0f, ImColor(150, 150, 150, 150));
+                    }
 
-                    //     draw_list->AddCircleFilled(offset + position, 4.0f, ImColor(150, 150, 150, 150));
-                    // }
                     ImGui::PopID();
                 }
             }