Initial commit, all code samples with working CMake script for VS/Windows.

src/3.model_loading/1.model_loading/model_rendered.cpp

@@ -0,0 +1,171 @@
+// Std. Includes
+#include <string>
+
+// GLEW
+#define GLEW_STATIC
+#include <GL/glew.h>
+
+// GLFW
+#include <GLFW/glfw3.h>
+
+// GL includes
+#include <learnopengl/shader.h>
+#include <learnopengl/camera.h>
+#include <learnopengl/model.h>
+
+// GLM Mathemtics
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+#include <glm/gtc/type_ptr.hpp>
+
+// Other Libs
+#include <SOIL.h>
+
+// Properties
+GLuint screenWidth = 800, screenHeight = 600;
+
+// Function prototypes
+void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
+void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
+void mouse_callback(GLFWwindow* window, double xpos, double ypos);
+void Do_Movement();
+
+// Camera
+Camera camera(glm::vec3(0.0f, 0.0f, 3.0f));
+bool keys[1024];
+GLfloat lastX = 400, lastY = 300;
+bool firstMouse = true;
+
+GLfloat deltaTime = 0.0f;
+GLfloat lastFrame = 0.0f;
+
+// The MAIN function, from here we start our application and run our Game loop
+int main()
+{
+    // Init GLFW
+    glfwInit();
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+    glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
+
+    GLFWwindow* window = glfwCreateWindow(screenWidth, screenHeight, "LearnOpenGL", nullptr, nullptr); // Windowed
+    glfwMakeContextCurrent(window);
+
+    // Set the required callback functions
+    glfwSetKeyCallback(window, key_callback);
+    glfwSetCursorPosCallback(window, mouse_callback);
+    glfwSetScrollCallback(window, scroll_callback);
+
+    // Options
+    glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
+
+    // Initialize GLEW to setup the OpenGL Function pointers
+    glewExperimental = GL_TRUE;
+    glewInit();
+
+    // Define the viewport dimensions
+    glViewport(0, 0, screenWidth, screenHeight);
+
+    // Setup some OpenGL options
+    glEnable(GL_DEPTH_TEST);
+
+    // Setup and compile our shaders
+    Shader shader("shader.vs", "shader.frag");
+
+    // Load models
+    Model ourModel("../../../resources/objects/nanosuit/nanosuit.obj");
+    
+    // Draw in wireframe
+    //glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+
+    // Game loop
+    while(!glfwWindowShouldClose(window))
+    {
+        // Set frame time
+        GLfloat currentFrame = glfwGetTime();
+        deltaTime = currentFrame - lastFrame;
+        lastFrame = currentFrame;
+
+        // Check and call events
+        glfwPollEvents();
+        Do_Movement();
+
+        // Clear the colorbuffer
+        glClearColor(0.05f, 0.05f, 0.05f, 1.0f);
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+        shader.Use();   // <-- Don't forget this one!
+        // Transformation matrices
+        glm::mat4 projection = glm::perspective(camera.Zoom, (float)screenWidth/(float)screenHeight, 0.1f, 100.0f);
+        glm::mat4 view = camera.GetViewMatrix();
+        glUniformMatrix4fv(glGetUniformLocation(shader.Program, "projection"), 1, GL_FALSE, glm::value_ptr(projection));
+        glUniformMatrix4fv(glGetUniformLocation(shader.Program, "view"), 1, GL_FALSE, glm::value_ptr(view));
+
+        // Draw the loaded model
+        glm::mat4 model;
+        model = glm::translate(model, glm::vec3(0.0f, -1.75f, 0.0f)); // Translate it down a bit so it's at the center of the scene
+        model = glm::scale(model, glm::vec3(0.2f, 0.2f, 0.2f));	// It's a bit too big for our scene, so scale it down
+        glUniformMatrix4fv(glGetUniformLocation(shader.Program, "model"), 1, GL_FALSE, glm::value_ptr(model));
+        ourModel.Draw(shader);       
+
+        // Swap the buffers
+        glfwSwapBuffers(window);
+    }
+
+    glfwTerminate();
+    return 0;
+}
+
+#pragma region "User input"
+
+// Moves/alters the camera positions based on user input
+void Do_Movement()
+{
+    // Camera controls
+    if(keys[GLFW_KEY_W])
+        camera.ProcessKeyboard(FORWARD, deltaTime);
+    if(keys[GLFW_KEY_S])
+        camera.ProcessKeyboard(BACKWARD, deltaTime);
+    if(keys[GLFW_KEY_A])
+        camera.ProcessKeyboard(LEFT, deltaTime);
+    if(keys[GLFW_KEY_D])
+        camera.ProcessKeyboard(RIGHT, deltaTime);
+}
+
+// Is called whenever a key is pressed/released via GLFW
+void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode)
+{
+    if(key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
+        glfwSetWindowShouldClose(window, GL_TRUE);
+
+    if(action == GLFW_PRESS)
+        keys[key] = true;
+    else if(action == GLFW_RELEASE)
+        keys[key] = false;	
+}
+
+void mouse_callback(GLFWwindow* window, double xpos, double ypos)
+{
+    if(firstMouse)
+    {
+        lastX = xpos;
+        lastY = ypos;
+        firstMouse = false;
+    }
+
+    GLfloat xoffset = xpos - lastX;
+    GLfloat yoffset = lastY - ypos; 
+    
+    lastX = xpos;
+    lastY = ypos;
+
+    camera.ProcessMouseMovement(xoffset, yoffset);
+}	
+
+void scroll_callback(GLFWwindow* window, double xoffset, double yoffset)
+{
+    camera.ProcessMouseScroll(yoffset);
+}
+
+#pragma endregion