Late Night VRML 2.0 with Java CD-ROM/code.zip/Ch13/nff/Scene.java

Text File | 1996-11-27 | 2KB | 53 lines

// A class for NFF scenes

// Written by Bernie Roehl, November 1996

package nff;

import java.io.*;
import java.util.*;

public class Scene {
    protected float version = 2.1f;
    protected Vec3f viewpos, viewdir;
    protected Vector objects = new Vector();

    public float getVersion() { return version; }
    public Vec3f getViewpos() { return viewpos; }
    public Vec3f getViewdir() { return viewdir; }
    public int getNumberOfObjects() { return objects.size(); }
    public Obj getObject(int n) { return (Obj) objects.elementAt(n); }

    public void dump() {
       System.out.println("Version " + version);
       if (viewpos != null)
           System.out.println("viewpos = " + viewpos);
       if (viewdir != null)
           System.out.println("viewdir = " + viewdir);
       System.out.println(objects.size() + " object(s)");
       Enumeration e = objects.elements();
       while (e.hasMoreElements())
           ((Obj) e.nextElement()).dump();
    }

    public Scene(DataInputStream in)
        throws IOException, NffSyntaxException  {
        String line;
    CommentStripperInputStream input = new CommentStripperInputStream(in);
        if (!input.readLine().startsWith("nff"))
            throw new NffSyntaxException("missing 'nff' signature");
        while ((line = input.readLine()) != null) {
            StringTokenizer s = new StringTokenizer(line);
            String first_token = s.nextToken();
            if (first_token.equals("version"))
                version = (new Float(s.nextToken())).floatValue();
            else if (first_token.equals("viewpos"))
                viewpos = new Vec3f(s);
            else if (first_token.equals("viewdir"))
                viewdir = new Vec3f(s);
            else  // name of an object
                objects.addElement(new Obj(first_token, input));
        }
    }
}