在三维物体中, z轴也与x轴和y轴同时存在。这些轴代表物体的高度, 宽度和深度。因此, 它代表了对象的真实视图。
JOGL 3D示例
在此示例中, 我们将创建一个简单的3D对象。
J3DBasic.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;
public class J3DBasic implements GLEventListener {private GLU glu = new GLU();
@Overridepublic void display(GLAutoDrawable drawable) {final GL2 gl = drawable.getGL().getGL2();
gl.glTranslatef(0f, 0f, -3f);
gl.glBegin(GL2.GL_LINES);
gl.glVertex3f(-1f, 0f, 0);
gl.glVertex3f(0f, 1f, 0);
gl.glEnd();
//3Dgl.glBegin(GL2.GL_LINES);
gl.glVertex3f(-1f, 0f, -2f);
gl.glVertex3f(0f, 1f, -2f);
gl.glEnd();
//topgl.glBegin(GL2.GL_LINES);
gl.glVertex3f(-1f, 0f, 0);
gl.glVertex3f(-1f, 0f, -2f);
gl.glEnd();
//bottomgl.glBegin(GL2.GL_LINES);
gl.glVertex3f(0f, 1f, 0);
gl.glVertex3f(0f, 1f, -2f);
gl.glEnd();
}@Overridepublic void dispose(GLAutoDrawable arg0) {//method body} @Overridepublic void init(GLAutoDrawable arg0) {// method body}@Overridepublic void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { 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(40.0f, h, 1.5, 18.0);
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);
J3DBasic b = new J3DBasic();
gc.addGLEventListener(b);
gc.setSize(600, 400);
final JFrame frame = new JFrame("JOGL 3D");
frame.getContentPane().add(gc);
frame.setSize(frame.getContentPane().getPreferredSize());
frame.setVisible(true);
} }【JOGL 3D基本形状】输出：
文章图片
