thomasdk
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Posted: April 03, 2011 10:48 by thomasdk
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Hi List I hope you can help me out. I am using JOGL, and cannot show text using the TextRenderer for some reason. The program should be simple enough, so there must be a basic rule that I have not understood yet. The program show a square and attemps to show the text "Hello World". Only the square is visible. Note, I can run the examples from netbeans and the netbeans opengl pack. I haven't been able to find the difference from those examples, and mine, which is much smaller. I am running eclipse, linux and opengl engine mesa. Thanks, --- program text below --- package test; import com.sun.opengl.util.awt.TextRenderer; import java.awt.Font; import javax.media.opengl.*; import javax.media.opengl.glu.*; public class TestHW implements GLEventListener { public void init(GLAutoDrawable drawable) { GL2 gl = drawable.getGL().getGL2(); gl.glClearColor(1.0f, 1.0f, 1.0f, 0.0f); gl.glEnable(GL2.GL_DEPTH_TEST); } public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { GL2 gl = drawable.getGL().getGL2(); GLU glu = new GLU(); if (height <= 0) // avoid a divide by zero error! height = 1; final float h = (float) width / (float) height; gl.glViewport(0, 0, width, height); gl.glMatrixMode(GL2.GL_PROJECTION); gl.glLoadIdentity(); glu.gluPerspective(45.0f, h, 1.0, 20.0); gl.glMatrixMode(GL2.GL_MODELVIEW); gl.glLoadIdentity(); } public void display(GLAutoDrawable drawable) { GL2 gl = drawable.getGL().getGL2(); // Clear the drawing area gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT); // Reset the current matrix to the "identity" gl.glLoadIdentity(); gl.glTranslatef(0.0f, 0.0f, -10f); /* * show a square, just to prove that I can actually show something! */ gl.glColor3f(0.0f, 1.0f, 0.0f); gl.glBegin(GL2.GL_POLYGON); gl.glVertex3f(-4.0f, 0.0f, 0.0f); gl.glVertex3f(0.0f, 0.0f, 0.0f); gl.glVertex3f(0.0f, 2.0f, 0.0f); gl.glVertex3f(-4.0f, 2.0f, 0.0f); gl.glEnd(); /* * now draw some text (it doesn't show on screen  )*/ String text = "Hello World"; TextRenderer renderer = new TextRenderer(new Font("Serif", Font.PLAIN, 72), true, true); renderer.beginRendering(drawable.getWidth(), drawable.getHeight()); gl.glLoadIdentity(); gl.glTranslatef(2.0f, 2.0f, 0.0f); renderer.setColor(0.0f, 1.0f, 1.0f, 1); renderer.draw(text, 0, 0); renderer.flush(); gl.glFlush(); } /** * No explicit cleanup necessary. */ public void dispose(GLAutoDrawable drawable) { } |
problem with TextRenderer
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