Fix linux compilation.

src/rendering/visual_elements/nodes/GridNode.cpp

@@ -9,6 +9,11 @@ GridNode::GridNode(const Transform& transform)
 
 }
 
+GridNode::~GridNode()
+{
+
+}
+
 void GridNode::setNumX(std::size_t numX)
 {
     if (mNumberX != numX)

src/rendering/visual_elements/nodes/GridNode.h

@@ -10,6 +10,8 @@ class GridNode : public MaterialNode
 public:
     GridNode(const Transform& transform);
 
+    virtual ~GridNode();
+
     void setNumX(std::size_t numX);
 
     void setNumY(std::size_t numY);

src/rendering/visual_elements/nodes/MaterialNode.cpp

@@ -8,6 +8,11 @@ MaterialNode::MaterialNode(const Transform& transform)
 
 }
 
+MaterialNode::~MaterialNode()
+{
+
+}
+
 const Color& MaterialNode::getFillColor() const
 {
     return mFillColor;

src/rendering/visual_elements/nodes/MaterialNode.h

@@ -8,6 +8,7 @@ class MaterialNode : public AbstractVisualNode
 {
 public:
     MaterialNode(const Transform& transform);
+    virtual ~MaterialNode();
 
     const Color& getFillColor() const;
     const Color& getStrokeColor() const;

src/rendering/visual_elements/nodes/MeshNode.cpp

@@ -9,6 +9,28 @@ MeshNode::MeshNode(const Transform& transform)
 
 }
 
+MeshNode::~MeshNode()
+{
+
+}
+
+SceneItem* MeshNode::getSceneItem(std::size_t idx) const
+{
+    return mModel.get();
+}
+
+std::size_t MeshNode::getNumSceneItems() const
+{
+    if (mWorkingMesh)
+    {
+        return 1;
+    }
+    else
+    {
+        return 0;
+    }
+}
+
 void MeshNode::setWidth(double width)
 {
     if (mWidth != width)
@@ -33,23 +55,6 @@ void MeshNode::setMesh(AbstractMesh* mesh)
     mMeshIsDirty = true;
 }
 
-SceneItem* MeshNode::getSceneItem(std::size_t idx) const
-{
-    return mModel.get();
-}
-
-std::size_t MeshNode::getNumSceneItems() const
-{
-    if (mWorkingMesh)
-    {
-        return 1;
-    }
-    else
-    {
-        return 0;
-    }
-}
-
 void MeshNode::update(SceneInfo* sceneInfo)
 {
     if (!mModel || mMeshIsDirty)

src/rendering/visual_elements/nodes/MeshNode.h

@@ -9,6 +9,8 @@ class MeshNode : public MaterialNode
 {
 public:
     MeshNode(const Transform& transform);
+    virtual ~MeshNode();
+
     void setMesh(AbstractMesh* mesh);
 
     SceneItem* getSceneItem(std::size_t idx) const override;