📅  最后修改于: 2021-01-05 00:45:51             🧑  作者: Mango
在本节中,我们将学习如何创建一个多维数据集。因此,为此首先创建六个相同大小的四边形,并将其定位为通过连接它们将得到一个合适的立方体。我们还将旋转此立方体以查看其所有侧面。
要创建旋转的多维数据集,请通过以下示例:-
J3DCube.java
package com.javatpoint.jogl;
import javax.media.opengl.GL2;
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 J3DCube 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, -2.0f );
gl.glRotatef(rotation, 1.0f, 1.0f, 1.0f);
gl.glBegin(GL2.GL_QUADS);
gl.glColor3f(0f,0f,1f); //Blue color
//Top Quadrilateral
gl.glVertex3f(0.5f, 0.5f, -0.5f); //Upper Right
gl.glVertex3f( -0.5f, 0.5f, -0.5f); // Upper Left
gl.glVertex3f( -0.5f, 0.5f, 0.5f ); // Bottom Left
gl.glVertex3f( 0.5f, 0.5f, 0.5f ); // Bottom Right
//Below Quadrilateral
gl.glColor3f( 1f,0f,0f ); //Red color
gl.glVertex3f( 0.5f, -0.5f, 0.5f ); // Upper Right
gl.glVertex3f( -0.5f, -0.5f, 0.5f ); // Upper Left
gl.glVertex3f( -0.5f, -0.5f, -0.5f ); // Bottom Left
gl.glVertex3f( 0.5f, -0.5f, -0.5f ); // Bottom Right
//Front Quadrilateral
gl.glColor3f( 0f,1f,0f ); //Green color
gl.glVertex3f( 0.5f, 0.5f, 0.5f ); // Upper Right
gl.glVertex3f( -0.5f, 0.5f, 0.5f ); // Upper Left
gl.glVertex3f( -0.5f, -0.5f, 0.5f ); // Bottom Left
gl.glVertex3f( 0.5f, -0.5f, 0.5f ); // Bottom Right
//Back Quadrilateral
gl.glColor3f( 1f,1f,0f ); //Yellow
gl.glVertex3f( 0.5f, -0.5f, -0.5f ); // Bottom Left
gl.glVertex3f( -0.5f, -0.5f, -0.5f ); // Bottom Right
gl.glVertex3f( -0.5f, 0.5f, -0.5f ); // Upper Right
gl.glVertex3f( 0.5f, 0.5f, -0.5f ); // Upper Left
//Left Quadrilateral
gl.glColor3f( 1f,0f,1f ); //Purple
gl.glVertex3f( -0.5f, 0.5f, 0.5f ); // Upper Right
gl.glVertex3f( -0.5f, 0.5f, -0.5f ); // Upper Left
gl.glVertex3f( -0.5f, -0.5f, -0.5f ); // Bottom Left
gl.glVertex3f( -0.5f, -0.5f, 0.5f ); // Bottom Right
//Right Quadrilateral
gl.glColor3f( 0f,1f, 1f ); //Cyan
gl.glVertex3f( 0.5f, 0.5f, -0.5f ); // Upper Right
gl.glVertex3f( 0.5f, 0.5f, 0.5f ); // Upper Left
gl.glVertex3f( 0.5f, -0.5f, 0.5f ); // Bottom Left
gl.glVertex3f( 0.5f, -0.5f, -0.5f ); // Bottom Right
gl.glEnd();
gl.glFlush();
rotation += 0.6f;
}
@Override
public void dispose( GLAutoDrawable drawable ) {
}
@Override
public void init( GLAutoDrawable drawable ) {
}
@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);
J3DCube cube = new J3DCube();
gc.addGLEventListener( cube );
gc.setSize( 400, 400 );
final JFrame frame = new JFrame( " 3D cube" );
frame.add(gc);
frame.setSize(600,500);
frame.setVisible(true);
final FPSAnimator animator = new FPSAnimator(gc, 200,true);
animator.start();
}
}
输出: