feat: technique overhaul

particle-track-and-trace/src/layers/Technique.cpp

@@ -0,0 +1,50 @@
+#include <vtkRenderWindow.h>
+
+#include "Technique.h"
+
+Technique::Technique(vtkSmartPointer<vtkCamera> cam) : cam(cam) {}
+
+
+void Technique::addLayer(Layer *l) {
+  l->setCamera(this->cam);
+  this->layers.push_back(l);
+}
+
+
+void Technique::removeLayer(Layer *l) {
+  auto it = std::find(this->layers.begin(), this->layers.end(), l);
+  if (it != this->layers.end()) {
+    this->layers.erase(it);
+  }
+}
+
+
+void Technique::updateData(int t) {
+  for (Layer *l : this->layers) {
+    l->updateData(t);
+  }
+}
+
+
+int Technique::numberOfLayers() {
+  return this->layers.size();
+}
+
+
+void Technique::bind(vtkSmartPointer<vtkRenderWindow> win, vtkSmartPointer<vtkRenderWindowInteractor> intr) {
+  for (Layer *l : this->layers) {
+    l->addObservers(intr);
+    win->AddRenderer(l->getLayer());
+  }
+  win->SetNumberOfLayers(this->layers.size());
+  // win->Render();
+}
+
+
+void Technique::unbind(vtkSmartPointer<vtkRenderWindow> win, vtkSmartPointer<vtkRenderWindowInteractor> intr) {
+  for (Layer *l : this->layers) {
+    l->removeObservers(intr);
+    win->RemoveRenderer(l->getLayer());
+  }
+  win->SetNumberOfLayers(0);
+}