JOGL 3D 基本形状

2025 年 3 月 17 日 | 阅读 1 分钟

在三维物体中，除了 x 轴和 y 轴之外，还存在 z 轴。这些轴表示物体的高度、宽度和深度。因此，它代表了物体的真实视图。

JOGL 3D 示例

在这个例子中，我们将创建一个简单的 3D 对象。

J3DBasic.java

package com.javatpoint.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();
	
   @Override
public 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();

      //3D
gl.glBegin(GL2.GL_LINES);
gl.glVertex3f(-1f,0f,-2f);
gl.glVertex3f(0f,1f,-2f);
gl.glEnd();

      //top
gl.glBegin(GL2.GL_LINES);
gl.glVertex3f(-1f,0f,0);
gl.glVertex3f(-1f,0f,-2f);
gl.glEnd();

      //bottom
gl.glBegin(GL2.GL_LINES);
gl.glVertex3f(0f,1f, 0);
gl.glVertex3f(0f,1f,-2f);
gl.glEnd();
   }

   @Override
public void dispose(GLAutoDrawable arg0) {
      //method body
   }
	
   @Override
public void init(GLAutoDrawable arg0) {
      // method body
   }

   @Override
public 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);
   }
	}

输出