fix: stylistic changes + addObservers

vtk/src/commands/SpawnPointCallback.h

@@ -0,0 +1,33 @@
+#ifndef VTKBASE_SPAWNPOINTCALLBACK_H
+#define VTKBASE_SPAWNPOINTCALLBACK_H
+
+
+#include <vtkCallbackCommand.h>
+#include <vtkRenderWindowInteractor.h>
+#include <vtkPoints.h>
+#include <vtkPolyData.h>
+#include <vtkMatrix4x4.h>
+
+class SpawnPointCallback : public vtkCallbackCommand {
+
+public:
+    static SpawnPointCallback *New();
+    SpawnPointCallback();
+
+    void setPoints(const vtkSmartPointer<vtkPoints> &points);
+
+    void setData(const vtkSmartPointer<vtkPolyData> &data);
+
+    void setRen(const vtkSmartPointer<vtkRenderer> &ren);
+private:
+    vtkSmartPointer<vtkPolyData> data;
+    vtkSmartPointer<vtkPoints> points;
+    vtkSmartPointer<vtkRenderer> ren;
+    vtkSmartPointer<vtkMatrix4x4> inverseCartographicProjection;
+
+    void Execute(vtkObject *caller, unsigned long evId, void *callData) override;
+    bool dragging = false;
+};
+
+
+#endif //VTKBASE_SPAWNPOINTCALLBACK_H