From 402a65ec072e6a4f34cce02d8e31ac76e6d5ca2c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BAlio=20Pinto?= <pinto.julioj03@gmail.com>
Date: Sun, 26 May 2024 20:18:17 +0100
Subject: [PATCH] imgui stuff

---
 engine/include/group.hpp |  2 +-
 engine/src/group.cpp     |  5 +++--
 engine/src/main.cpp      | 39 ++++++++++++++++++++++++++++++++++-----
 imgui.ini                |  9 +++++++--
 4 files changed, 45 insertions(+), 10 deletions(-)

diff --git a/engine/include/group.hpp b/engine/include/group.hpp
index c9fcb90..8450606 100644
--- a/engine/include/group.hpp
+++ b/engine/include/group.hpp
@@ -34,7 +34,7 @@ class Group {
 
   void rotate(float angle, float x, float y, float z);
 
-  void drawGroup(bool lights, const Frustsum& frustsum, bool normals, float elapsed_time);
+  void drawGroup(bool lights, const Frustsum& frustsum, bool normals, float elapsed_time, int& nr_models);
 
 };
 
diff --git a/engine/src/group.cpp b/engine/src/group.cpp
index 39b0da4..5d40ad3 100644
--- a/engine/src/group.cpp
+++ b/engine/src/group.cpp
@@ -58,7 +58,7 @@ glm::mat4 applyTransformations(std::vector<Transformations> order,
   return matrix;
 }
 
-void Group::drawGroup(bool lights, const Frustsum& frustsum, bool normals, float speed_factor) {
+void Group::drawGroup(bool lights, const Frustsum& frustsum, bool normals, float speed_factor, int& nr_models) {
   glPushMatrix();
 
   glm::mat4 matrix = applyTransformations(this->order, this->static_transformations, this->rotations, this->translates, speed_factor);
@@ -69,13 +69,14 @@ void Group::drawGroup(bool lights, const Frustsum& frustsum, bool normals, float
     }
 
     if(model.bounding_sphere.isInsideFrustsum(frustsum, matrix)) {
+      nr_models++;
       model.drawModel();
       if(normals) model.drawNormals();
     }
   }
 
   for (Group& sub : this->subgroups) {
-    sub.drawGroup(lights, frustsum, normals, speed_factor);
+    sub.drawGroup(lights, frustsum, normals, speed_factor, nr_models);
   }
 
   glPopMatrix();
diff --git a/engine/src/main.cpp b/engine/src/main.cpp
index d4cc4f3..1d06206 100644
--- a/engine/src/main.cpp
+++ b/engine/src/main.cpp
@@ -12,6 +12,7 @@ extern "C" {
 #define _USE_MATH_DEFINES
 #include <math.h>
 #include <chrono>
+#include <unordered_map>
 
 #include "Configuration.hpp"
 #include "curves.hpp"
@@ -29,6 +30,10 @@ bool normals = false;
 bool culling = false;
 bool lighting = false;
 float speed_factor = 1.0f;
+bool models_menus = false;
+
+int total_models = 0;
+int nr_models = 0;
 
 int timebase;
 float frames;
@@ -36,6 +41,14 @@ float frames;
 Configuration c;
 Camera camera;
 
+struct ModelInfo {
+  int vertex_number;
+  int triangle_number;
+};
+
+std::unordered_map<std::string, ModelInfo> models_info;
+
+
 void reshape(int w, int h) {
   float aspect_ratio = (float)w / (float)h;
 
@@ -99,7 +112,11 @@ void setupConfig(char* arg) {
 
 void setupModels(Group& group) {
   for (Model& model : group.models) {
+    total_models++;
     model.initModel();
+
+    ModelInfo info = {model.vbo.size(), model.ibo.size() / 3};
+    models_info[model.filename] = info;
   }
   for (Group& g : group.subgroups) {
     setupModels(g);
@@ -127,12 +144,13 @@ void renderMenu() {
       ImGui::Begin("Infos", NULL, ImGuiWindowFlags_AlwaysAutoResize);
 
       ImGui::Text("FPS: %.1f (%.3f  ms/frame)", io.Framerate, 1000.f / io.Framerate);
-      ImGui::Text("Camera Position: (%f, %f, %f)", camera.position.x, camera.position.y, camera.position.z);
-      ImGui::Text("Camera LookAt: (%f, %f, %f)", camera.lookAt.x, camera.lookAt.y, camera.lookAt.z);
-      ImGui::Text("Fov: %d Ratio: %.1f Near: %f Far: %f", c.camera.fov, static_cast<float>(glutGet(GLUT_WINDOW_WIDTH) / glutGet(GLUT_WINDOW_HEIGHT)), c.camera.near, c.camera.far);
+      ImGui::Text("Camera Position: (%.3f, %.3f, %.3f)", camera.position.x, camera.position.y, camera.position.z);
+      ImGui::Text("Fov: %d Ratio: %.1f Near: %.3f Far: %.3f", c.camera.fov, static_cast<float>(glutGet(GLUT_WINDOW_WIDTH) / glutGet(GLUT_WINDOW_HEIGHT)), c.camera.near, c.camera.far);
       ImGui::Text("XML File: %s", filename.c_str());
-
+      ImGui::Text("Models: %d (Total %d)", nr_models, total_models);
+      ImGui::Checkbox("Models Info", &models_menus);
       ImGui::End();
+
     }
     {
       ImGui::Begin("Options", NULL, ImGuiWindowFlags_AlwaysAutoResize);  
@@ -159,6 +177,16 @@ void renderMenu() {
       }
       ImGui::End();
     }
+    if(models_menus){
+      ImGui::Begin("Models", NULL, ImGuiWindowFlags_AlwaysAutoResize);
+      for (auto& model : models_info) {
+        ImGui::Text("Model: %s", model.first.c_str());
+        ImGui::Text("Vertices: %d Triangles: %d", model.second.vertex_number, model.second.triangle_number);
+        //separator here
+        ImGui::Separator();
+      }
+      ImGui::End();
+    }
     ImGui::Render();
     glViewport(0, 0, (GLsizei) io.DisplaySize.x, (GLsizei) io.DisplaySize.y);
     ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
@@ -209,7 +237,8 @@ void renderScene(void) {
     drawLights(c.lights);
   }
 
-  c.group.drawGroup(lighting, frustsum, normals, speed_factor);
+  nr_models = 0;
+  c.group.drawGroup(lighting, frustsum, normals, speed_factor, nr_models);
 
   // Start the Dear ImGui frame
   renderMenu();
diff --git a/imgui.ini b/imgui.ini
index 9e85340..84a42d1 100644
--- a/imgui.ini
+++ b/imgui.ini
@@ -5,11 +5,16 @@ Collapsed=0
 
 [Window][Infos]
 Pos=15,18
-Size=304,116
+Size=325,139
 Collapsed=0
 
 [Window][Options]
-Pos=14,141
+Pos=15,169
 Size=312,124
 Collapsed=0
 
+[Window][Models]
+Pos=770,16
+Size=297,183
+Collapsed=1
+