name.martingeisse.minimal.simulation.lwjgl.LwjglWindow.java Source code

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Here is the source code for name.martingeisse.minimal.simulation.lwjgl.LwjglWindow.java

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/**
 * Copyright (c) 2015 Martin Geisse
 *
 * This file is distributed under the terms of the MIT license.
 */

package name.martingeisse.minimal.simulation.lwjgl;

import org.lwjgl.input.Keyboard;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.PixelFormat;

/**
 * Uses LWJGL to open an OpenGL window.
 */
public final class LwjglWindow {

    /**
     * Constructor.
     * @param width the window width
     * @param height the window height
     */
    public LwjglWindow(int width, int height) {
        try {
            LwjglNativeLibraryHelper.prepareNativeLibraries();
            Display.setDisplayMode(new DisplayMode(width, height));
            Display.setTitle("Minimal");
            Display.setFullscreen(true);
            Display.create(new PixelFormat(0, 24, 0));
            Keyboard.create();
        } catch (Exception e) {
            throw new RuntimeException("could not open LWJGL window", e);
        }
        GL11.glMatrixMode(GL11.GL_PROJECTION);
        GL11.glLoadIdentity();
        GL11.glOrtho(0, width, height, 0, -1, 1);
        GL11.glMatrixMode(GL11.GL_MODELVIEW);
        GL11.glLoadIdentity();
    }

    /**
     * Does the grunt work necessary to get input from the OS.
     */
    public void doGruntWork() {
        Display.processMessages();
        Keyboard.poll();
    }

    /**
     * Closes the window.
     */
    public void close() {
        Keyboard.destroy();
        Display.destroy();
    }

}