feat (wip): refactor of main func into actual organized classes

vtk/src/helperClasses/Program.cpp

@@ -0,0 +1,57 @@
+#include <vtkRenderWindow.h>
+#include <vtkNew.h>
+
+#include "Program.h"
+
+
+void Program::setWinProperties() {
+  this->win->SetWindowName("Simulation");
+  this->win->SetSize(661, 661);
+
+  this->interact->SetRenderWindow(this->win);
+}
+
+// Program::Program() : background(), euler(), lagrange(), win(), interact() {
+//   setWinProperties();
+// }
+
+Program::Program(Layer bg, Layer e, Layer l) : background(bg), euler(e), lagrange(l), win(), interact() {
+  this->win = vtkSmartPointer<vtkRenderWindow>::New();
+  this->interact = vtkSmartPointer<vtkRenderWindowInteractor>::New();
+
+  this->win->SetNumberOfLayers(3);
+  this->win->AddRenderer(bg.getLayer());
+  this->win->AddRenderer(e.getLayer());
+  this->win->AddRenderer(l.getLayer());
+  setWinProperties();
+}
+
+
+void Program::setBackground(Layer bg) {
+  this->win->RemoveRenderer(this->background.getLayer());
+  this->background = bg;
+  this->win->AddRenderer(bg.getLayer());
+  
+}
+
+
+void Program::setEuler(Layer e) {
+  this->win->RemoveRenderer(this->euler.getLayer());
+  this->euler = e;
+  this->win->AddRenderer(e.getLayer());
+}
+
+
+void Program::setLagrange(Layer l) {
+  this->win->RemoveRenderer(this->lagrange.getLayer());
+  this->lagrange = l;
+  this->win->AddRenderer(l.getLayer());
+}
+
+// void Program::addInteractionStyle(vtkInteractorStyle style);
+
+
+void Program::render() {
+  this->win->Render();
+  this->interact->Start();
+}