ENH: Add option to turn on/off visibility of renderable object

Base/Materials/imstkRenderMaterial.cpp

@@ -187,4 +187,25 @@ RenderMaterial::flatShadingOff()
 {
     m_flatShading = false;
 }
+
+void
+RenderMaterial::setVisibilityOff()
+{
+    m_isVisible = false;
+    m_modified = true;
+}
+
+void
+RenderMaterial::setVisibilityOn()
+{
+    m_isVisible = true;
+    m_modified = true;
+}
+
+bool
+RenderMaterial::getVisibility() const
+{
+    return m_isVisible;
+}
+
 }

Base/Materials/imstkRenderMaterial.h

@@ -105,6 +105,13 @@ public:
     void flatShadingOn();
     void flatShadingOff();
 
+    ///
+    /// \brief Turn on/off visibility
+    ///
+    void setVisibilityOff();
+    void setVisibilityOn();
+    bool getVisibility() const;
+
 protected:
     friend class VTKRenderDelegate;
 
@@ -124,8 +131,11 @@ protected:
     // Textures
     std::vector<std::shared_ptr<Texture>> m_textures; ///< Ordered by Texture::Type
 
+    // Visibility
+    bool m_isVisible = true;
+
     bool m_stateModified = true; ///< Flag for expensive state changes
-    bool m_modified = true; ///< Flag for any material property changes
+    bool m_modified = true;      ///< Flag for any material property changes
     bool m_flatShading = false;
 };
 }

Base/Rendering/RenderDelegate/imstkVTKRenderDelegate.cpp

@@ -231,5 +231,16 @@ VTKRenderDelegate::updateActorProperties()
 
     // Material state is now up to date
     material->m_stateModified = false;
+
+    if (material->getVisibility())
+    {
+        m_actor->VisibilityOn();
+        return;
+    }
+    else
+    {
+        m_actor->VisibilityOff();
+        return;
+    }
 }
 } // imstk