Java3D实例之创建空间几何模型的实现方法

/**
 *
 *
 *  @version ： 1.1
 * 
 *  @author  ： 苏若年         <a href="mailto:DennisIT@163.com">发送邮件</a>
 *   
 *  @since   ： 1.0      创建时间:    2013-5-6 下午02:57:47
 *    
 *  TODO     :
 *
 */
public class LineShape extends Shape3D{

    // 直线的定点坐标
    private float vert[ ]={
.5f,0.5f,0.0f, -0.5f,0.5f,0.0f,
.3f,0.0f,0.0f, -0.3f,0.0f,0.0f,
                -0.5f,-0.5f,0.0f, 0.5f,-0.5f,0.0f};
    // 各定点的颜色
    private float color[ ]={
.0f,0.5f,1.0f,  0.0f,0.5f,1.0f,
.0f,0.8f,2.0f,  1.0f,0.0f,0.3f,
.0f,1.0f,0.3f,  0.3f,0.8f,0.0f};

    public LineShape( ) {
        // 创建直线数组对象
        LineArray line=new LineArray(6,LineArray.COORDINATES|LineArray.COLOR_3);
        // 设置直线对象的坐标数组
        line.setCoordinates(0,vert);
        // 设置直线对象的颜色数组
        line.setColors(0,color);
        // 创建直线属性对象
        LineAttributes linea=new LineAttributes( );
        // 设置线宽
        linea.setLineWidth(10.0f);
        // 设置直线的渲染效果
        linea.setLineAntialiasingEnable(true);

        Appearance app=new Appearance( ); 
        app.setLineAttributes(linea);
        this.setGeometry(line);
        this.setAppearance(app);
    }

}
</div>
将3d直线放置到场景中

import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.DirectionalLight;
import javax.media.j3d.Shape3D;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Vector3f;