Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package javaapplication2; import org.lwjgl.*; import org.lwjgl.glfw.*; import org.lwjgl.opengl.*; import static org.lwjgl.glfw.Callbacks.*; import static org.lwjgl.glfw.GLFW.*; import static org.lwjgl.opengl.GL11.*; import static org.lwjgl.system.MemoryUtil.*; public class JavaApplication2 { // The window handle private long window; public void run() { System.out.println("Hello LWJGL " + Version.getVersion() + "!"); try { init(); loop(); // Free the window callbacks and destroy the window glfwFreeCallbacks(window); glfwDestroyWindow(window); } finally { // Terminate GLFW and free the error callback glfwTerminate(); glfwSetErrorCallback(null).free(); } } private void init() { // Setup an error callback. The default implementation // will print the error message in System.err. GLFWErrorCallback.createPrint(System.err).set(); // Initialize GLFW. Most GLFW functions will not work before doing this. if (!glfwInit()) throw new IllegalStateException("Unable to initialize GLFW"); // Configure our window glfwDefaultWindowHints(); // optional, the current window hints are already the default glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE); // the window will stay hidden after creation glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE); // the window will be resizable int WIDTH = 300; int HEIGHT = 300; // Create the window ter5544 window = glfwCreateWindow(WIDTH, HEIGHT, "Hello World!", NULL, NULL); if (window == NULL) throw new RuntimeException("Failed to create the GLFW window"); // Setup a key callback. It will be called every time a key is pressed, repeated or released. glfwSetKeyCallback(window, (window, key, scancode, action, mods) -> { if (key == GLFW_KEY_ESCAPE && action == GLFW_RELEASE) glfwSetWindowShouldClose(window, true); // We will detect this in our rendering loop }); // Get the resolution of the primary monitor GLFWVidMode vidmode = glfwGetVideoMode(glfwGetPrimaryMonitor()); // Center our window glfwSetWindowPos(window, (vidmode.width() - WIDTH) / 2, (vidmode.height() - HEIGHT) / 2); // Make the OpenGL context current glfwMakeContextCurrent(window); // Enable v-sync glfwSwapInterval(1); // Make the window visible glfwShowWindow(window); } private void loop() { // This line is critical for LWJGL's interoperation with GLFW's // OpenGL context, or any context that is managed externally. // LWJGL detects the context that is current in the current thread, // creates the GLCapabilities instance and makes the OpenGL // bindings available for use. GL.createCapabilities(); // Set the clear color glClearColor(1.0f, 0.0f, 0.0f, 0.0f); // Run the rendering loop until the user has attempted to close // the window or has pressed the ESCAPE key. while (!glfwWindowShouldClose(window)) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the framebuffer glfwSwapBuffers(window); // swap the color buffers // Poll for window events. The key callback above will only be // invoked during this call. glfwPollEvents(); } } public static void main(String[] args) { System.setProperty("java.library.path", "/home/ll/NetBeansProjects/JavaApplication1/native"); new JavaApplication2().run(); } }