implemented controls

src/gui/input/Widget.cpp

@@ -0,0 +1,77 @@
+#include "Widget.h"
+#include "linalg/linalg.h"
+#include "consts.h"
+
+
+Widget::Widget(GLFWwindow* window) {
+  IMGUI_CHECKVERSION();
+  ImGui::CreateContext();
+  this->io = ImGui::GetIO();
+
+  ImGui_ImplGlfw_InitForOpenGL(window, true);
+  ImGui_ImplOpenGL3_Init();
+
+  this->cameraDir = Vec3::init(0.4, 0.6, 1.0).normalize();
+  this->cameraPos = Point3::init(-0.7, -1.0, -2.0);
+  this->cameraUp = Vec3::init(0.0, 1.0, 0.0).normalize();
+  this->lightPos = Point3::init(1.5, 2.0, -1.0);
+  this->paused = true;
+  this->renderOnce = false;
+};
+
+void Widget::tick() {
+  if (this->renderOnce) {
+    this->renderOnce = false;
+    this->paused = true;
+  }
+
+  ImGui_ImplOpenGL3_NewFrame();
+  ImGui_ImplGlfw_NewFrame();
+  ImGui::NewFrame();
+  
+  // input widgets
+  float min = -1, max = 1;
+
+  ImGui::Begin("Light Controls");
+  ImGui::DragScalar("X coordinate", ImGuiDataType_Double, &this->lightPos.x, 0.005f, &min, &max, "%.3f");
+  ImGui::DragScalar("Y coordinate", ImGuiDataType_Double, &this->lightPos.y, 0.005f, &min, &max, "%.3f");
+  ImGui::DragScalar("Z coordinate", ImGuiDataType_Double, &this->lightPos.z, 0.005f, &min, &max, "%.3f");
+  ImGui::End();
+
+  ImGui::Begin("Pause");
+  if (ImGui::Button(this->paused ? "Unpause" : "Pause")) this->paused = !this->paused;
+  if (ImGui::Button("render Once")) {
+    this->paused = !this->paused;
+    this->renderOnce = true;
+  }
+  ImGui::End();
+
+  ImGui::Begin("Camera Controls");
+  ImGui::DragScalar("X position", ImGuiDataType_Double, &this->cameraPos.x, 0.005f, &min, &max, "%.3f");
+  ImGui::DragScalar("Y position", ImGuiDataType_Double, &this->cameraPos.y, 0.005f, &min, &max, "%.3f");
+  ImGui::DragScalar("Z position", ImGuiDataType_Double, &this->cameraPos.z, 0.005f, &min, &max, "%.3f");
+  ImGui::DragScalar("X direction", ImGuiDataType_Double, &this->cameraDir.x, 0.005f, &min, &max, "%.3f");
+  ImGui::DragScalar("Y direction", ImGuiDataType_Double, &this->cameraDir.y, 0.005f, &min, &max, "%.3f");
+  ImGui::DragScalar("Z direction", ImGuiDataType_Double, &this->cameraDir.z, 0.005f, &min, &max, "%.3f");
+  ImGui::End();
+  
+  copyToDevice();
+}
+
+void Widget::render() {
+  ImGui::Render();
+  ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+}
+
+void Widget::copyToDevice() {
+  cudaMemcpyToSymbol(&d_cameraPos, &this->cameraPos, sizeof(Point3));
+  cudaMemcpyToSymbol(&d_cameraDir, &this->cameraDir, sizeof(Vec3));
+  cudaMemcpyToSymbol(&d_cameraUp, &this->cameraUp, sizeof(Vec3));
+  cudaMemcpyToSymbol(&d_lightPos, &this->lightPos, sizeof(Point3));
+}
+
+Widget::~Widget() {
+  ImGui_ImplOpenGL3_Shutdown();
+  ImGui_ImplGlfw_Shutdown();
+  ImGui::DestroyContext();
+}

src/gui/input/Widget.h

@@ -0,0 +1,31 @@
+#ifndef WIDGET_H
+#define WIDGET_H
+
+#include "../include/imgui/imgui.h"
+#include "../include/imgui/backends/imgui_impl_glfw.h"
+#include "../include/imgui/backends/imgui_impl_opengl3.h"
+#include <GLFW/glfw3.h>
+#include "linalg/linalg.h"
+
+class Widget {
+public:
+  Point3 cameraDir;
+  Vec3 cameraPos;
+  Vec3 cameraUp;
+  Point3 lightPos;
+  bool paused;
+  bool renderOnce;
+
+  ImGuiIO io;
+
+  void tick();
+  void render();
+  void copyToDevice();
+
+  Widget(GLFWwindow* window);
+  ~Widget();
+};
+
+
+
+#endif // WIDGET_H

src/gui/input/rendererinfo.h

@@ -0,0 +1,14 @@
+#ifndef RENDERERINFO_H
+#define RENDERERINFO_H
+
+class rendererInfo {
+public:
+  Vec3 cameraDir;
+  Vec3 cameraPos;
+  Vec3 lightPos;
+
+  RendererInfo();
+  void copyToDevice();
+};
+
+#endif // RENDERERINFO_H