nodeportrayal.java

MASON代表多主体邻里或网络仿真(Multi-Agent Simulator of Neighborhoods or Networks)。它是乔治梅森大学用Java开发的离散事件多主体仿真核心库

package sim.app.balls3d;
 
import sim.portrayal3d.*;
import sim.portrayal.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.geometry.*; 
 
public class NodePortrayal extends SimplePortrayal3D
    {
    double diameter;
    protected Color3f obstacleColor = new Color3f(0,255f/255,0); 
        
 
    public NodePortrayal( double diam )
        {
        this.diameter = diam;
        }
 
    public TransformGroup getModel(Object obj, TransformGroup j3dModel)
        {
        if(j3dModel==null)
            {
            j3dModel = new TransformGroup();
            Sphere s = new Sphere((float)diameter/2);
            Appearance appearance = new Appearance();
            appearance.setColoringAttributes(new ColoringAttributes(obstacleColor, ColoringAttributes.SHADE_GOURAUD));
            Material m= new Material();
            m.setAmbientColor(obstacleColor);
            m.setEmissiveColor(0f,0f,0f);
            m.setDiffuseColor(obstacleColor);
            m.setSpecularColor(1f,1f,1f);
            m.setShininess(128f);
            appearance.setMaterial(m);
            s.setAppearance(appearance);

            // make all of its shapes pickable -- in this case, spheres
            // only have one "side"
            setPickableFlags(s.getShape(Sphere.BODY));
             
            // build a LocationWrapper for the object
            LocationWrapper pickI = new LocationWrapper(obj, null, parentPortrayal);
                                                                                                          
            // Store the LocationWrapper in the user data of each shape
            s.getShape(Sphere.BODY).setUserData(pickI);

            
            j3dModel.addChild(s);
            }
        return j3dModel;
        }
    }