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Dieses Beispiel

zeichnet 1000 Kugeln und die "gesnappten" Kugeln gelb. Die Kugeln sind vom Typ Entity abgeleitet. Sie werden als Children in die Scene eingefügt. Die SnappItems enthalten die gefangenen Kugeln.
using System;
using System.Drawing;
using System.Windows.Forms;
using Drawing3d;
namespace Sample
{
    public partial class Form1 : Form
    {
        MyDevice Device = new MyDevice();
        public Form1()
        {
            InitializeComponent();
            Device.WinControl = this;
           
        }
   
    }
    class MySphere : Drawing3d.Entity
    {
        public MySphere(xyz Center)
        {
            this.Center = Center;
         }
        public xyz Center = new xyz(0, 0, 0);
        protected override void OnDraw(OpenGlDevice Device)
        {
           Device.drawSphere(Center, 0.5);
        }
    }
    public class MyDevice:OpenGlDevice
    {
        Drawing3d.Entity Scene = new Drawing3d.Entity();  
        protected override void OnCreated()
        {
         base.OnCreated();
         FieldOfView = Math.PI/6;
           for (int i = 0; i < 10; i++)
            {
                for (int j = 0; j < 10; j++)
                {
                    for (int k = 0; k < 10; k++)
                    {
                        Scene.Children.Add(new MySphere(new xyz(i - 5, j - 5, k - 5)));
                    }
                }
            }

           
        }
        public override void OnPaint()
        {
            base.OnPaint();
            Scene.Paint(this);
            Emission = Color.Yellow;

            for (int i = 0; i < SnappItems.Count; i++)
                SnappItems[i].draw(this);
           Emission = Color.Black;
        }
    }
}


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