基于OpenGL开发的微型太阳系项目C++源码(含项目说明+演示图片).zip

/* * 微型太阳系:太阳、地球、月亮 */ #include <iostream> #include "glad/glad.h" #include "GLFW/glfw3.h" #include "Shader.h" #include "Model.h" #include "Camera.h" #include "Texture.h" //鼠标键盘响应函数 void framebuffer_size_callback(GLFWwindow* window, int width, int height); void mouse_callback(GLFWwindow* window, double xpos, double ypos); void scroll_callback(GLFWwindow* window, double xoffset, double yoffset); void processInput(GLFWwindow *window); float screen_width = 800.0f; //窗口宽度 float screen_height = 600.0f; //窗口高度 const GLfloat PI = 3.14159265358979323846f; //摄像机相关参数 Camera camera(glm::vec3(1.0f, 0.0f,6.0f)); float lastX = screen_width / 2.0f; float lastY = screen_height / 2.0f; bool firstMouse = true; glm::vec3 lightPos(0.0f, 0.0f, 0.0f); float deltaTime = 0.0f; float lastFrame = 0.0f; float skybox_vertices[] = { //星空盒顶点数组 -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f }; int main() { // 初始化GLFW glfwInit(); // 初始化GLFW glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); // OpenGL版本为3.3，主次版本号均设为3 glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); // 使用核心模式(无需向后兼容性) glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // 如果使用的是Mac OS X系统，需加上这行 glfwWindowHint(GLFW_RESIZABLE, GL_FALSE); // 不可改变窗口大小 // 创建窗口(宽、高、窗口名称) auto window = glfwCreateWindow(screen_width, screen_height, "model", nullptr, nullptr); if (window == nullptr) { std::cout << "Failed to Create OpenGL Context" << std::endl; glfwTerminate(); return -1; } glfwMakeContextCurrent(window); glfwSetFramebufferSizeCallback(window, framebuffer_size_callback); glfwSetCursorPosCallback(window, mouse_callback); glfwSetScrollCallback(window, scroll_callback); glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED); // 初始化GLAD，加载OpenGL函数指针地址的函数 if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) { std::cout << "Failed to initialize GLAD" << std::endl; return -1; } // 指定当前视口尺寸(前两个参数为左下角位置，后两个参数是渲染窗口宽、高) glViewport(0, 0, screen_width, screen_height); //Shader shader("C:/src/res/shader/Model.vs", "C:/src/res/shader/Model.fs");//加载着色器 //Model ourModel("C:/src/res/model/character.obj"); //====================================================== //====================================================== //天空 Shader skyShader("sky.vs", "sky.fs"); //太阳 Shader sunShader("sun.vs", "sun.fs"); Model sunModel("C:/src/models/sun/13902_Earth_v1_l3.obj"); //地球 Shader earthShader("earth.vs", "earth.fs"); Model earthModel("C:/src/models/earth/13902_Earth_v1_l3.obj"); //月亮 Shader moonShader("earth.vs", "earth.fs"); Model moonModel("C:/src/models/moon/13902_Earth_v1_l3.obj"); //====================================================== //====================================================== glEnable(GL_DEPTH_TEST); //////////////////////////////////////////////////////// GLuint skyVAO, skyVBO;//绑定天空盒VAOVBO glGenVertexArrays(1, &skyVAO); glGenBuffers(1, &skyVBO); glBindVertexArray(skyVAO); glBindBuffer(GL_ARRAY_BUFFER, skyVBO); glBufferData(GL_ARRAY_BUFFER, sizeof(skybox_vertices), &skybox_vertices, GL_STATIC_DRAW); glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0); glEnableVertexAttribArray(0); //----------------------------------------------------- std::vector<std::string> faces//加载天空盒纹理 { ("data/sky/sky.jpg"), ("data/sky/sky.jpg"), ("data/sky/sky.jpg"), ("data/sky/sky.jpg"), ("data/sky/sky.jpg"), ("data/sky/sky.jpg") }; //加载天空盒纹理 unsigned int skyTexture = Texture::load_cubemap(faces); //----------------------------------------------------- sunShader.Use(); // Transform坐标变换矩阵 glm::mat4 model(1);//model矩阵，局部坐标变换至世界坐标 model = glm::translate(model, glm::vec3(0.0f, 0.0f, 0.0f)); model = glm::scale(model, glm::vec3(0.001f, 0.001f, 0.001f)); sunShader.SetMat4("model", model); earthShader.Use(); model = glm::mat4(1.0f);;//model矩阵，局部坐标变换至世界坐标 model = glm::translate(model, glm::vec3(3.0f, 0.0f, 0.0f)); model = glm::scale(model, glm::vec3(0.0005f, 0.0005f, 0.0005f)); earthShader.SetMat4("model", model); //////////////////////////////////////////////////////// skyShader.Use();//使用SkyBoxShader着色器 skyShader.SetInt("skybox", 0);//传入天空盒纹理 //////////////////////////////////////////////////////// //////////////////////////////////////////////////////// //旋转 float zhuan = 0.0, mmz = 0.0; // 渲染循环 while (!glfwWindowShouldClose(window)) { //计算每帧的时间差 float currentFrame = glfwGetTime(); deltaTime = currentFrame - lastFrame; lastFrame = currentFrame; processInput(window); glClearColor(0.0f, 0.34f, 0.57f, 1.0f); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//清理颜色缓冲和深度缓冲 glm::mat4 view(1);//view矩阵，世界坐标变换至观察坐标系 view = camera.GetViewMatrix(); glm::mat4 projection(1);//projection矩阵，投影矩阵 projection = glm::perspective(glm::radians(camera.Zoom), screen_width / screen_height, 0.1f, 100.0f); sunShader.Use(); // 向着色器中传入参数 sunShader.SetMat4("view", view); sunShader.SetMat4("projection", projection); //sunShader.SetVec3("lightPos", lightPos); //sunShader.SetVec3("viewPos", camera.Position); //绘制 sunModel.Draw(sunShader); earthShader.Use(); earthShader.SetMat4("view", view); earthShader.SetMat4("projection", projection); earthShader.SetVec3("lightPos", lightPos); earthShader.SetVec3("viewPos", camera.Position); //做出地球绕日运动 float R, x, y, z; R = 3.0;//半径为4.0 x = R * cos(zhuan*PI); y = 0.0; z = R * sin(zhuan*PI); zhuan += 0.0005; model = glm::mat4(1.0f); model = glm::translate(model, glm::vec3(x,y,z)); model = glm::rotate(model, glm::radians((R-x)*20.0f), glm::vec3(1.0, 1.0, 1.0)); model = glm::scale(model, glm::vec3(0.0005)); // a smaller cube earthShader.SetMat4("model", model); earthModel.Draw(earthShader); //月亮 moonShader.Use(); moonShader.SetMat4("view", view); moonShader.SetMat4("projection", projection); moonShader.SetVec3("lightPos", lightPos); moonShader.SetVec3("viewPos", camera.Position); //月亮移位 float r, mx, my, mz; r = 0.7;//半径为4.0 mmz += 0.005; mx = r * cos(mmz*PI); my = 0.0; mz = r * sin(mmz*PI); model = glm::mat4(1.0f); model = glm::translate(model, glm::vec3(mx+x, my+y, mz+z)); //model = glm::translate(model, glm::vec3(x*0.25, y*0.25, z*0.25)); model = glm::rotate(model, glm::radians((R - x)*10.0f), glm::vec3(0.0, 1.0, 0.0)); model = glm::scale(model, glm::vec3(0.0002)); // a smaller cube moonShader.SetMat4("model", model); moonModel.Draw(moonShader); glDepthFunc(GL_LEQUAL);//深度测试 输入的深度值小于或等于参考值，则通过 glDepthMask(GL_FALSE);//禁止向深度缓冲区写入数据 skyShader.Use(); view = glm::mat4(glm::mat3(camera.GetViewMatrix())); // remove translation from the view matrix skyShader.SetMat4("view", view); skyS