KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > openlaszlo > iv > flash > commands > SetScaleCommand


1 /*
2  * $Id: SetScaleCommand.java,v 1.5 2002/06/12 23:54:14 skavish Exp $
3  *
4  * ===========================================================================
5  *
6  * The JGenerator Software License, Version 1.0
7  *
8  * Copyright (c) 2000 Dmitry Skavish (skavish@usa.net). All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution, if
22  * any, must include the following acknowlegement:
23  * "This product includes software developed by Dmitry Skavish
24  * (skavish@usa.net, http://www.flashgap.com/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
27  *
28  * 4. The name "The JGenerator" must not be used to endorse or promote
29  * products derived from this software without prior written permission.
30  * For written permission, please contact skavish@usa.net.
31  *
32  * 5. Products derived from this software may not be called "The JGenerator"
33  * nor may "The JGenerator" appear in their names without prior written
34  * permission of Dmitry Skavish.
35  *
36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39  * DISCLAIMED. IN NO EVENT SHALL DMITRY SKAVISH OR THE OTHER
40  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47  * SUCH DAMAGE.
48  *
49  */
50
51 package org.openlaszlo.iv.flash.commands;
52
53 import java.awt.geom.*;
54
55 import org.openlaszlo.iv.flash.parser.*;
56 import org.openlaszlo.iv.flash.api.*;
57 import org.openlaszlo.iv.flash.util.*;
58 import org.openlaszlo.iv.flash.context.Context;
59
60 public class SetScaleCommand extends GenericCommand {
61
62     public SetScaleCommand() {}
63
64     private double parseNumber( String JavaDoc num, double def ) {
65         if( num == null ) return def;
66         try {
67             return Double.valueOf(num).doubleValue();
68         } catch( NumberFormatException JavaDoc e ) {
69             return def;
70         }
71     }
72
73     public void doCommand( FlashFile file, Context context, Script parent, int frameNum ) throws IVException {
74         Instance inst = getCommandInstance(file, context, parent, frameNum);
75
76         // process corresponding flash def first
77 processFlashDef(inst, file, context);
78
79         double xscale = parseNumber( getParameter( context, "xscale" ), 1.0 );
80         double yscale = parseNumber( getParameter( context, "yscale" ), 1.0 );
81         double rotate = parseNumber( getParameter( context, "rotate" ), 0.0 );
82         double xoffset = parseNumber( getParameter( context, "xoffset" ), 0.0 ) * 20.0;
83         double yoffset = parseNumber( getParameter( context, "yoffset" ), 0.0 ) * 20.0;
84
85         // M = T x I x S x R,
86 // where T: translation, I: instance matrix, S: scaling, R: rotation
87
88         inst.matrix.preConcatenate( AffineTransform.getTranslateInstance( xoffset, yoffset ) );
89
90         inst.matrix.scale( xscale, yscale );
91
92         if( rotate != 0.0 ) {
93             double theta = (rotate/180)*Math.PI;
94             inst.matrix.rotate( theta );
95         }
96
97     }
98
99 }
100
Popular Tags