BUG: add asserts in Renderer constructor

Check that visual geometry exists and that a delegate
has be created.

Base/Rendering/RenderDelegate/imstkRenderDelegate.cpp

@@ -26,6 +26,9 @@
 #include "imstkPlane.h"
 #include "imstkSphere.h"
 #include "imstkCube.h"
+#include "imstkSurfaceMesh.h"
+#include "imstkVolumetricMesh.h"
+#include "imstkCube.h"
 #include "imstkPlaneRenderDelegate.h"
 #include "imstkSphereRenderDelegate.h"
 #include "imstkCubeRenderDelegate.h"
@@ -43,32 +46,36 @@ RenderDelegate::make_delegate(std::shared_ptr<Geometry>geom)
     {
         auto plane = std::dynamic_pointer_cast<Plane>(geom);
         return std::make_shared<PlaneRenderDelegate>(plane);
-
-        break;
     }
-
     case GeometryType::Sphere:
     {
         auto sphere = std::dynamic_pointer_cast<Sphere>(geom);
         return std::make_shared<SphereRenderDelegate>(sphere);
-
-        break;
     }
-
     case GeometryType::Cube:
     {
         auto cube = std::dynamic_pointer_cast<Cube>(geom);
         return std::make_shared<CubeRenderDelegate>(cube);
-
-        break;
     }
-
+    case GeometryType::SurfaceMesh:
+    {
+        auto surface = std::dynamic_pointer_cast<SurfaceMesh>(geom);
+        LOG(WARNING) << "RenderDelegate::make_delegate error: SurfaceMeshRenderDelegate not implemented yet.";
+        return nullptr;
+        //return std::make_shared<SurfaceMeshRenderDelegate>(surface);
+    }
+    case GeometryType::TetrahedralMesh:
+    case GeometryType::HexahedralMesh:
+    {
+        auto mesh = std::dynamic_pointer_cast<VolumetricMesh>(geom);
+        LOG(WARNING) << "RenderDelegate::make_delegate error: VolumetricMeshRenderDelegate not implemented yet.";
+        return nullptr;
+        //return std::make_shared<VolumetricMeshRenderDelegate>(mesh);
+    }
     default:
     {
-        LOG(WARNING) << "Unknown geometry type.";
+        LOG(WARNING) << "RenderDelegate::make_delegate error: Geometry type incorrect.";
         return nullptr;
-
-        break;
     }
     }
 }

Base/Rendering/imstkRenderer.cpp

@@ -38,7 +38,21 @@ Renderer::Renderer(std::shared_ptr<Scene> scene)
     for ( const auto& obj : scene->getSceneObjects() )
     {
         auto geom     = obj->getVisualGeometry();
+        if (geom == nullptr)
+        {
+            LOG(WARNING) << "Renderer::Renderer error: Could not retrieve visual geometry for '"
+                         << obj->getName() << "'.";
+            continue;
+        }
+
         auto delegate = RenderDelegate::make_delegate( geom );
+        if (delegate == nullptr)
+        {
+            LOG(WARNING) << "Renderer::Renderer error: Could not create render delegate for '"
+                         << obj->getName() << "'.";
+            continue;
+        }
+
         m_objectVtkActors.push_back( delegate->getVtkActor() );
     }