font3dstate.java

JAVA3D矩陈的相关类

/*
 * $RCSfile: Font3DState.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.
 *
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 *
 * 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
 * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
 * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
 * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
 * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
 * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * You acknowledge that this software is not designed, licensed or
 * intended for use in the design, construction, operation or
 * maintenance of any nuclear facility.
 *
 * $Revision: 1.4 $
 * $Date: 2007/02/09 17:20:34 $
 * $State: Exp $
 */

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

import javax.media.j3d.Font3D;
import javax.media.j3d.FontExtrusion;
import javax.media.j3d.SceneGraphObject;
import java.awt.Font;
import com.sun.j3d.utils.scenegraph.io.retained.Controller;
import com.sun.j3d.utils.scenegraph.io.retained.SymbolTableData;
import java.awt.Shape;
import java.lang.String;
import java.lang.Integer;
import java.io.IOException;
import java.io.DataInput;
import java.io.DataOutput;
import java.awt.geom.PathIterator;
import java.awt.geom.GeneralPath;

public class Font3DState extends NodeComponentState {

    private Font font=null;
    private double tesselationTolerance=0.0D;
    private FontExtrusion extrudePath=null;

    public Font3DState( SymbolTableData symbol, Controller control ) {
	super( symbol, control );
    }

    public void writeConstructorParams( DataOutput out ) throws IOException {
	super.writeConstructorParams( out );

	out.writeUTF( font.getFontName() );
	out.writeInt( font.getStyle() );
	out.writeInt( font.getSize() );

	out.writeDouble( tesselationTolerance );

	if ( extrudePath!=null ) {
	    Shape shape = extrudePath.getExtrusionShape();
	    if ( shape != null ) {
		PathIterator shapePath = shape.getPathIterator( null );
		float[] coords = new float[ 6 ];
		int segType;
		int points;
		while ( !(shapePath.isDone()) ) {
		    // Get type of current path segment and associated coordinates
		    segType = shapePath.currentSegment( coords );
		    out.writeInt( segType );

		    // Write out relevant coordinates
		    points = 0;
		    if ( segType==PathIterator.SEG_MOVETO) points = 1;
		    else if ( segType==PathIterator.SEG_LINETO ) points = 1;
		    else if (segType==PathIterator.SEG_QUADTO ) points = 2;
		    else if (segType==PathIterator.SEG_CUBICTO ) points = 3;

		    for (int i=0;i<points;i++ ) {
			out.writeFloat( coords[ i*2+0 ] );
			out.writeFloat( coords[ i*2+1 ] );
		    }

		    // Next segment
		    if ( !(shapePath.isDone()) ) shapePath.next();
		}
	    }
	    // Flag for end of path definition
	    out.writeInt( Integer.MIN_VALUE );
	    out.writeDouble( extrudePath.getTessellationTolerance() );
	} else out.writeInt( Integer.MIN_VALUE );
    }

    public void readConstructorParams( DataInput in ) throws IOException {
	super.readConstructorParams( in );

	String fontName = in.readUTF();
	int style = in.readInt();
	int size = in.readInt();
	font = new Font( fontName, style, size );

	tesselationTolerance = in.readDouble();

	GeneralPath shape = null;
	int segType = in.readInt();
	while ( segType!=Integer.MIN_VALUE ) {
	    if ( shape==null ) shape = new GeneralPath();

	    if ( segType==PathIterator.SEG_MOVETO) {
		shape.moveTo( in.readFloat(), in.readFloat() );
	    } else if ( segType==PathIterator.SEG_LINETO ) {
		shape.lineTo( in.readFloat(), in.readFloat() );
	    } else if ( segType==PathIterator.SEG_QUADTO ) {
		shape.quadTo( in.readFloat(), in.readFloat(),
			      in.readFloat(), in.readFloat() );
	    } else if ( segType==PathIterator.SEG_CUBICTO ) {
		shape.curveTo( in.readFloat(), in.readFloat(),
			       in.readFloat(), in.readFloat(),
			       in.readFloat(), in.readFloat() );
	    } else if ( segType==PathIterator.SEG_CLOSE ) {
		shape.closePath();
	    }

	    segType = in.readInt();
	}
	if ( shape!=null ) extrudePath = new FontExtrusion( shape, in.readDouble() );
	else extrudePath = null;
    }

    public SceneGraphObject createNode( Class j3dClass ) {
	return createNode( j3dClass, new Class[] { Font.class,
						   Double.TYPE,
						   FontExtrusion.class },
				     new Object[] { font,
						    new Double( tesselationTolerance ),
						    extrudePath } );
    }

    protected SceneGraphObject createNode() {
	return new Font3D( font, tesselationTolerance, extrudePath );
    }
}