NeHe Lesson 2

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Where we get to draw something! Just the display method changes, and it is extremely similar to the C version:

public void display(GLAutoDrawable drawable) {
// like int DrawGLScene(GLvoid)
GL gl = drawable.getGL();

// Clear the drawing area
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
// Reset the current matrix to the “identity”
gl.glLoadIdentity();
gl.glTranslatef(-1.5f,0.0f,-6.0f);
gl.glBegin(GL.GL_TRIANGLES);                        // Drawing Using Triangles
gl.glVertex3f( 0.0f, 1.0f, 0.0f);                // Top
gl.glVertex3f(-1.0f,-1.0f, 0.0f);                // Bottom Left
gl.glVertex3f( 1.0f,-1.0f, 0.0f);                // Bottom Right
gl.glEnd();

gl.glTranslatef(3.0f,0.0f,-0.0f);
gl.glBegin(GL.GL_QUADS);                        // Draw A Quad
gl.glVertex3f(-1.0f, 1.0f, 0.0f);                // Top Left
gl.glVertex3f( 1.0f, 1.0f, 0.0f);                // Top Right
gl.glVertex3f( 1.0f,-1.0f, 0.0f);                // Bottom Right
gl.glVertex3f(-1.0f,-1.0f, 0.0f);                // Bottom Left
gl.glEnd();

}

A triangle!