This example shows how to use Outline fonts. Outline fonts can be moved along the Z axis and can be resized. You can spin them around on an axis and because proper normals are generated for each character, they can be lit up with lighting. You can build Outline fonts using any of the fonts installed on your computer.

This is the Java port of the one of the NeHe OpenGL tutorials.

You can get complete IntelliJ IDEA project structure (all source, resources, build script, …) by downloading the source distribution from here.

The original post of the programmer who ported the examples can be found here.

 package demos.nehe.lesson14;


import demos.common.GLDisplay;

/**
 * @author Pepijn Van Eeckhoudt
 */
public class Lesson14 {
    public static void main(String[] args) {
        GLDisplay neheGLDisplay = GLDisplay.createGLDisplay("Lesson 14: Outline fonts");
        Renderer renderer = new Renderer();
        neheGLDisplay.addGLEventListener(renderer);
        neheGLDisplay.start();
    }
}


package demos.nehe.lesson14;

import com.sun.opengl.util.GLUT;

import javax.media.opengl.GL;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.glu.GLU;

import java.text.NumberFormat;

class Renderer implements GLEventListener {
    private float rotation;    // Rotation
    private GLU glu = new GLU();
    private GLUT glut = new GLUT();
    private NumberFormat numberFormat;
    

    public Renderer() {
        numberFormat = NumberFormat.getNumberInstance();
        numberFormat.setMinimumFractionDigits(2);
        numberFormat.setMaximumFractionDigits(2);
    }

    void renderStrokeString(GL gl, int font, String string) {
        // Center Our Text On The Screen
        float width = glut.glutStrokeLength(font, string);
        gl.glTranslatef(-width / 2f, 0, 0);
        // Render The Text
        for (int i = 0; i < string.length(); i++) {
            char c = string.charAt(i);
            glut.glutStrokeCharacter(font, c);
        }
    }

    public void init(GLAutoDrawable glDrawable) {
        GL gl = glDrawable.getGL();
        gl.glShadeModel(GL.GL_SMOOTH);              // Enable Smooth Shading
        gl.glClearColor(0.0f, 0.0f, 0.0f, 0.5f);    // Black Background
        gl.glClearDepth(1.0f);                      // Depth Buffer Setup
        gl.glEnable(GL.GL_DEPTH_TEST);              // Enables Depth Testing
        gl.glDepthFunc(GL.GL_LEQUAL);               // The Type Of Depth Testing To Do
        
        gl.glHint(GL.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);
        gl.glEnable(GL.GL_LIGHT0);                  // Enable Default Light (Quick And Dirty)
        gl.glEnable(GL.GL_LIGHTING);                // Enable Lighting
        gl.glEnable(GL.GL_COLOR_MATERIAL);          // Enable Coloring Of Material
    }

    public void display(GLAutoDrawable glDrawable) {
        GL gl = glDrawable.getGL();
        
        // Clear Screen And Depth Buffer
        gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);  
        
        gl.glLoadIdentity();                                // Reset The Current Modelview Matrix
        gl.glTranslatef(0.0f, 0.0f, -15.0f);                // Move One Unit Into The Screen
        gl.glRotatef(rotation, 1.0f, 0.0f, 0.0f);           // Rotate On The X Axis
        gl.glRotatef(rotation * 1.5f, 0.0f, 1.0f, 0.0f);    // Rotate On The Y Axis
        gl.glRotatef(rotation * 1.4f, 0.0f, 0.0f, 1.0f);    // Rotate On The Z Axis
        gl.glScalef(0.005f, 0.005f, 0.0f);
        // Pulsing Colors Based On The Rotation
        gl.glColor3f((float) (Math.cos(rotation / 20.0f)), 
                (float) (Math.sin(rotation / 25.0f)), 1.0f - 0.5f * 
                (float) (Math.cos(rotation / 17.0f)));
        
        renderStrokeString(gl, GLUT.STROKE_MONO_ROMAN, "NeHe - " + 
                numberFormat.format((rotation / 50))); // Print GL Text To The Screen
        
        rotation += 0.5f;  // Increase The Rotation Variable
    }

    public void reshape(GLAutoDrawable glDrawable, int x, int y, int w, int h) {
        if (h == 0) h = 1;
        GL gl = glDrawable.getGL();
        
        // Reset The Current Viewport And Perspective Transformation
        gl.glViewport(0, 0, w, h);                       
        
        gl.glMatrixMode(GL.GL_PROJECTION);    // Select The Projection Matrix
        gl.glLoadIdentity();                  // Reset The Projection Matrix
        
        // Calculate The Aspect Ratio Of The Window
        glu.gluPerspective(45.0f, (float) w / (float) h, 0.1f, 100.0f);  
        
        gl.glMatrixMode(GL.GL_MODELVIEW);     // Select The Modelview Matrix
        gl.glLoadIdentity();                  // Reset The ModalView Matrix
    }

    public void displayChanged(GLAutoDrawable glDrawable, boolean b, boolean b1) {
    }
}