在上一节中, 我们创建了一个从内部是空心的立方体。现在, 我们将创建一个实心长方体并将其旋转。旋转时, 长方体也会在整个屏幕上移动。
要创建实体图形3D对象, 需要启用深度测试。 gl.glEnable（GL2.GL_DEPTH_TEST）方法用于启用它。
JCuboid.java
package com.srcmini.jogl;
import javax.media.opengl.*;
import javax.media.opengl.awt.GLCanvas;
import javax.media.opengl.glu.GLU;
import javax.swing.JFrame;
import com.jogamp.opengl.util.FPSAnimator;
public class JCuboid implements GLEventListener {private GLU glu = new GLU();
private float rotation = 0.0f;
@Override
public void display( GLAutoDrawable drawable ) {
final GL2 gl = drawable.getGL().getGL2();
gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT );
gl.glLoadIdentity();
gl.glTranslatef( 0f, 0f, -5.0f );
gl.glRotatef(rotation, 1.0f, 1.0f, 1.0f);
gl.glBegin(GL2.GL_QUADS);
gl.glColor3f(1f, 0f, 0f);
//red color//Top
gl.glVertex3f(-1f, 0.8f, 0.5f);
gl.glVertex3f(-0.5f, 0.8f, 0.5f);
gl.glVertex3f(-1f, 0.5f, 0.5f );
gl.glVertex3f(-0.5f, 0.5f, 0.5f );
//Bottom
gl.glVertex3f( -1f, 0.8f, 0.9f );
gl.glVertex3f( -1f, 0.5f, 0.9f );
gl.glVertex3f( -0.5f, 0.5f, 0.9f );
gl.glVertex3f(-0.5f, 0.8f, 0.9f );
//Front
gl.glVertex3f(-0.5f, 0.8f, 0.5f );
gl.glVertex3f( -1f, 0.8f, 0.5f );
gl.glVertex3f( -1f, 0.8f, 0.9f );
gl.glVertex3f( -0.5f, 0.8f, 0.9f);
//Back
gl.glVertex3f(-0.5f, 0.5f, 0.5f);
gl.glVertex3f( -1f, 0.5f, 0.5f);
gl.glVertex3f( -1f, 0.5f, 0.9f );
gl.glVertex3f( -0.5f, 0.5f, 0.9f );
//Left
gl.glVertex3f(-0.5f, 0.8f, 0.9f);
gl.glVertex3f(-0.5f, 0.8f, 0.5f );
gl.glVertex3f(-0.5f, 0.5f, 0.9f);
gl.glVertex3f( -0.5f, 0.5f, 0.5f);
//Right
gl.glVertex3f( -1f, 0.8f, 0.9f);
gl.glVertex3f( -1f, 0.8f, 0.5f );
gl.glVertex3f( -1f, 0.5f, 0.5f);
gl.glVertex3f(-1f, 0.5f, 0.9f);
gl.glEnd();
gl.glFlush();
rotation -= 0.15f;
}@Override
public void dispose( GLAutoDrawable drawable ) {}@Override
public void init( GLAutoDrawable drawable ) {
final GL2 gl = drawable.getGL().getGL2();
gl.glEnable( GL2.GL_DEPTH_TEST );
}@Override
public void reshape( GLAutoDrawable drawable, int x, int y, int width, int height ) {
final GL2 gl = drawable.getGL().getGL2();
if( height<
=0 )
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 static void main( String[] args ) {
final GLProfile gp = GLProfile.get( GLProfile.GL2 );
GLCapabilities cap = new GLCapabilities( gp );
final GLCanvas gc = new GLCanvas( cap );
JCuboid cuboid = new JCuboid();
gc.addGLEventListener( cuboid );
gc.setSize( 100, 100 );
final JFrame frame = new JFrame ( " JOGL Cuboid" );
frame.add(gc);
frame.setSize(500, 400);
frame.setVisible(true);
final FPSAnimator animator = new FPSAnimator(gc, 300, true);
animator.start();
}}【JOGL 3D长方体】输出：
文章图片
