pathinterpolatorstate.java

JAVA3D矩陈的相关类

/*
 * $RCSfile: PathInterpolatorState.java,v $
 *
 * Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistribution of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
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 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
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 *   distribution.
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 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
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 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
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 * $Revision: 1.4 $
 * $Date: 2007/02/09 17:20:37 $
 * $State: Exp $
 */

package com.sun.j3d.utils.scenegraph.io.state.javax.media.j3d;

import java.io.IOException;
import java.io.DataInput;
import java.io.DataOutput;
import javax.media.j3d.PathInterpolator;
import javax.media.j3d.SceneGraphObject;
import com.sun.j3d.utils.scenegraph.io.retained.Controller;
import com.sun.j3d.utils.scenegraph.io.retained.SymbolTableData;

public abstract class PathInterpolatorState extends TransformInterpolatorState {

    protected float[] knots;
    
    public PathInterpolatorState( SymbolTableData symbol,Controller control ) {
        super( symbol, control );
    }

    // PathInterpolator.setKnots(float[]) is protected so we can only set the
    // knots in the constructor
    
    public void writeConstructorParams( DataOutput out ) throws IOException {
        super.writeConstructorParams( out );
        knots = new float[ ((PathInterpolator)node).getArrayLengths() ];
        out.writeInt( knots.length );
        ((PathInterpolator)node).getKnots( knots );
        for(int i=0; i<knots.length; i++)
            out.writeFloat( knots[i] );
    }
    
    public void readConstructorParams( DataInput in ) throws IOException {
        super.readConstructorParams( in );
        knots = new float[ in.readInt() ];
        for(int i=0; i<knots.length; i++)
            knots[i] = in.readFloat();
    }
}