Java-Gaming.org
Featured games (79)
games approved by the League of Dukes 		Games in Showcase (496)
games submitted by our members 		Games in WIP (421)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  [Odejava] new: XODE XML exporting!  (Read 1699 times)
0 Members and 1 Guest are viewing this topic.
Offline William Denniss

JGO Coder


Projects: 2


Fire at will
« Posted 2005-03-13 01:20:22 »
Hi,

As a result of a request from Levent (who's creating an Odejava visualiser), and several hours of work from me, one can now export XML data from an XODE tree.

The method is:  
1  
XODERoot.getDocument()


To print the XML text data, I use this:
1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
import org.apache.xml.serialize.OutputFormat;
import org.apache.xml.serialize.XMLSerializer;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;

// ...

 try {
            OutputFormat format = new OutputFormat(document);
            format.setLineWidth(65);
            format.setIndenting(true);
            format.setIndent(2);
            XMLSerializer output = new XMLSerializer(System.out, format);
            output.serialize(document);
          }
          catch (IOException e) {
            System.err.println(e);
          }


The official "Truck" XODE example:
1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
73  
74  
75  
76  
77  
78  
79  
80  
81  
82  
83  
84  
85  
86  
87  
88  
89  
90  
91  
92  
93  
94  
95  
96  
97  
98  
99  
100  
101  
102  
103  
104  
105  
106  
107  
108  
109  
110  
111  
112  
113  
114  
115  
116  
117  
118  
119  
120  
121  
122  
123  
124  
125  
126  
127  
128  
129  
130  
131  
132  
133  
134  
135  
136  
137  
138  
139  
140  
141  
142  
143  
144  
145  
146  
147  
148  
149  
150  
151  
152  
153  
154  
155  
156  
157  
158  
159  
160  
161  
162  
163  
164  
165  
166  
167  
168  
169  
170  
171  
172  
173  
174  
175  
176  
177  
178  
179  
180  
181  
182  
183  
184  
185  
186  
187  
188  
189  
190  
<?xml version="1.0" encoding="UTF-8"?>
<xode version="1.0r23" name="truck"
                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://tanksoftware.com/xode/1.0r23/xode.xsd">

<world>

        <space>


                <body name="chassis">
                        <transform>
                                <position x="-2.5" y="2.5" z="-3" />
                                <rotation>
                                        <euler x="0" y="90" z="0" aformat="degrees" />
                                </rotation>
                        </transform>

                        <geom name="chassisGeom">
                                <box
                                        sizex="5"
                                        sizey="6"
                                        sizez="7"
                                />
                        </geom>

                        <geom name="frontCabin">
                                <transform>
                                        <position x="0" y="0" z="4.5" />
                                </transform>
                                <box
                                        sizex="3"
                                        sizey="4"
                                        sizez="3"
                                />
                        </geom>


                        <body name="FrontLeft">
                                <transform>
                                        <position x="3" y="-3.5" z="-2.5" />
                                </transform>

                                <geom name="FrontLeftGeom">

                                        <sphere
                                                radius="1.5"
                                        />

                                </geom>

                                <joint name="FrontLeftJoint">

                                        <link1 body="chassis" />

                                        <hinge2>
                                                <axis x="0" y="1" z="0"
                                                        FMax="100"
                                                        LowStop="0"
                                                HiStop="0"
                                                />
                                                <axis x="0" y="0" z="1"
                                                        SuspensionERP="1"
                                                        SuspensionCFM="0.1"
                                                        FMax="500"
                                                />
                                        </hinge2>
                                </joint>

                                <mass><adjust density="0.2" /></mass>

                        </body>

                        <body name="FrontRight">
                                <transform>
                                        <position x="3" y="-3.5" z="2.5" />
                                </transform>


                                <geom name="FrontLeftGeom">

                                        <sphere
                                                radius="1.5"
                                        />

                                </geom>

                                <joint name="FrontRightJoint">

                                        <link1 body="chassis" />

                                        <hinge2>


                                                <axis x="0" y="1" z="0"
                                                        FMax="100"
                                                        LowStop="0"
                                                        HiStop="0"
                                                />
                                                <axis x="0" y="0" z="1"
                                                        SuspensionERP="1"
                                                        SuspensionCFM="0.1"
                                                        FMax="500"
                                                />


                                        </hinge2>
                                </joint>


                                <mass><adjust density="0.2" /></mass>

                        </body>

                        <body name="BackLeft">
                                <transform>
                                        <position x="-4" y="-3.5" z="-2.5" />
                                </transform>

                                <geom name="FrontLeftGeom">
                                        <sphere
                                                radius="1.5"
                                        />
                                </geom>

                                <joint name="BackLeftJoint">

                                        <link1 body="chassis" />

                                        <hinge2>
                                                <axis x="0" y="1" z="0"
                                                        FMax="100"
                                                        LowStop="0"
                                                        HiStop="0"
                                                />
                                                <axis x="0" y="0" z="1"
                                                        SuspensionERP="1"
                                                        SuspensionCFM="0.1"
                                                        FMax="500"
                                                />

                                        </hinge2>
                                </joint>


                                <mass><adjust density="0.2" /></mass>

                        </body>
                        <body name="BackRight">
                                <transform>
                                        <position x="-4" y="-3.5" z="2.5" />
                                </transform>

                                <geom name="BackRightGeom">
                                        <sphere
                                                radius="1.5"
                                        />
                                </geom>

                                <joint name="BackRightJoint">

                                        <link1 body="chassis" />

                                        <hinge2>

                                            <axis x="0" y="1" z="0"
                                                FMax="100"
                                                LowStop="0"
                                                HiStop="0"
                                            />
                                            <axis x="0" y="0" z="1"
                                                SuspensionERP="1"
                                                SuspensionCFM="0.1"
                                                FMax="500"

                                            />

                                        </hinge2>
                                </joint>

                                <mass><adjust density="0.2" /></mass>

                        </body>

                        <mass><adjust density="30" /></mass>

                </body>

        </space>
</world>
</xode>
Lineriders - Current Projects & Tech Reviews -- Xith3D Resource -- Odejava Resource
Offline William Denniss

JGO Coder


Projects: 2


Fire at will
« Reply #1 - Posted 2005-03-13 01:20:55 »
yields the following after importing and exporting:

1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
73  
74  
75  
76  
77  
78  
79  
80  
81  
82  
83  
84  
85  
86  
87  
88  
89  
90  
91  
92  
93  
94  
95  
<?xml version="1.0" encoding="UTF-8"?>
<xode name="truck" version="1.0r23"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://tanksoftware.com/xode/1.0r23/xode.xsd">
  <world name="">
    <space name="">
      <body name="chassis">
        <transform>
          <euler x="0.0" y="1.5707964" z="0.0"/>
          <position x="-2.5" y="2.5" z="-3.0"/>
        </transform>
        <geom name="chassisGeom">
          <box sizex="5.0" sizey="6.0" sizez="7.0"/>
        </geom>
        <geom name="frontCabin">
          <transform>
            <position x="0.0" y="0.0" z="4.5"/>
          </transform>
          <box sizex="3.0" sizey="4.0" sizez="3.0"/>
        </geom>
        <body name="FrontLeft">
          <transform>
            <position x="3.0" y="-3.5" z="-2.5"/>
          </transform>
          <geom name="FrontLeftGeom">
            <sphere radius="1.5"/>
          </geom>
          <joint name="FrontLeftJoint">
            <link1 body="chassis"/>
            <hinge2>
              <anchor x="0.0" y="0.0" z="0.0"/>
              <axis FMax="100.0" HiStop="0.0" LowStop="0.0" x="0.0"
                y="1.0" z="0.0"/>
              <axis FMax="500.0" SuspensionCFM="0.1" SuspensionERP="1.0"
                x="0.0" y="0.0" z="1.0"/>
            </hinge2>
          </joint>
        </body>
        <body name="FrontRight">
          <transform>
            <position x="3.0" y="-3.5" z="2.5"/>
          </transform>
          <geom name="FrontLeftGeom">
            <sphere radius="1.5"/>
          </geom>
          <joint name="FrontRightJoint">
            <link1 body="chassis"/>
            <hinge2>
              <anchor x="0.0" y="0.0" z="0.0"/>
              <axis FMax="100.0" HiStop="0.0" LowStop="0.0" x="0.0"
                y="1.0" z="0.0"/>
              <axis FMax="500.0" SuspensionCFM="0.1" SuspensionERP="1.0"
                x="0.0" y="0.0" z="1.0"/>
            </hinge2>
          </joint>
        </body>
        <body name="BackLeft">
          <transform>
            <position x="-4.0" y="-3.5" z="-2.5"/>
          </transform>
          <geom name="FrontLeftGeom">
            <sphere radius="1.5"/>
          </geom>
          <joint name="BackLeftJoint">
            <link1 body="chassis"/>
            <hinge2>
              <anchor x="0.0" y="0.0" z="0.0"/>
              <axis FMax="100.0" HiStop="0.0" LowStop="0.0" x="0.0"
                y="1.0" z="0.0"/>
              <axis FMax="500.0" SuspensionCFM="0.1" SuspensionERP="1.0"
                x="0.0" y="0.0" z="1.0"/>
            </hinge2>
          </joint>
        </body>
        <body name="BackRight">
          <transform>
            <position x="-4.0" y="-3.5" z="2.5"/>
          </transform>
          <geom name="BackRightGeom">
            <sphere radius="1.5"/>
          </geom>
          <joint name="BackRightJoint">
            <link1 body="chassis"/>
            <hinge2>
              <anchor x="0.0" y="0.0" z="0.0"/>
              <axis FMax="100.0" HiStop="0.0" LowStop="0.0" x="0.0"
                y="1.0" z="0.0"/>
              <axis FMax="500.0" SuspensionCFM="0.1" SuspensionERP="1.0"
                x="0.0" y="0.0" z="1.0"/>
            </hinge2>
          </joint>
        </body>
      </body>
    </space>
  </world>
</xode>


Code is currently in CVS.

Cheers,

Will.
Lineriders - Current Projects & Tech Reviews -- Xith3D Resource -- Odejava Resource
Offline William Denniss

JGO Coder


Projects: 2


Fire at will
« Reply #2 - Posted 2005-03-13 01:27:18 »
XODE Todo:


  • perhaps create an implementation of OutputFormat to output the XML in the standard XODE manner
  • preserve angles specified in degrees
  • remove information about "absolute" transforms from the spec, it's all relative now.
  • implement unimplemented elements of body such as torque
  • add ability to add/remove child XODEObjects from XODEContainers to allow XODE trees to be constructed in java code (or JPhyzWiz)
  • implement setters and getters for all attributes (plus, make private)


I can do most of that, but perhaps someone can tackle the first point?   Smiley

Cheers,

Will.
Lineriders - Current Projects & Tech Reviews -- Xith3D Resource -- Odejava Resource
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline Levent Bayindir

Senior Newbie




Java games rock!
« Reply #3 - Posted 2005-03-13 20:33:35 »
Hi,

Thanks again for adding this functionality.

It seems that adding a few lines of code will solve the first dot. Smiley (no need to create an OutputFormat)

http://www.cafeconleche.org/books/xmljava/chapters/ch13s02.html

I will try it and post the results.
Offline William Denniss

JGO Coder


Projects: 2


Fire at will
« Reply #4 - Posted 2005-03-13 21:04:26 »
You're welcome.

I meant to mention that book, it was extreemly useful to me:  http://www.cafeconleche.org/books/xmljava/chapters/index.html

What I'd like to see are linebreaks between the attributes like so:
1  
2  
3  
4  
5  
         <axis x="0" y="0" z="1"
           SuspensionERP="1"
           SuspensionCFM="0.1"
           FMax="500"
        />


Fairly low on the priority list though Smiley

Let me know how it goes.

Cheers,

Will.
Lineriders - Current Projects & Tech Reviews -- Xith3D Resource -- Odejava Resource
Offline Levent Bayindir

Senior Newbie




Java games rock!
« Reply #5 - Posted 2005-03-13 21:38:14 »
Here are related parts:

Indenting (false)
If true, then the serializer will add indents at each level and wrap lines that exceed the maximum line width. If false it won't. The number of spaces to indent is set by the indent property, and the column to wrap at is set by the line width property.

public void setIndenting(boolean indenting);
public boolean getIndenting();

Indent (4)
The number of spaces to indent each level if indenting is true.

public void setIndent(int indent);
public int getIndent();

Line width (72)
The maximum number of characters in a line when indenting is true. Setting this to zero turns off line wrapping completely.

public void setLineWidth(int width);
public int getLineWidth();


So, we can set a line width, set indenting to true and give an indent value. The best way is this i think. I read "Creating DOMWriters" section too and it does not solve this problem either. (it just can select which nodes can be printed)

Example code:
1  
2  
3  
format.setLineWidth(40);
format.setIndenting(true);
format.setIndent(6);
Offline William Denniss

JGO Coder


Projects: 2


Fire at will
« Reply #6 - Posted 2005-03-14 00:17:55 »
That is similar to what I did (see top of thread), but it doesn't solve the problem of adding new lines after attributes, it only does elements.  As I don't think this isn't a standard way of formatting XML data, I suspect we may have to roll our own.

Will.
Lineriders - Current Projects & Tech Reviews -- Xith3D Resource -- Odejava Resource
Offline Ole Friis

Senior Newbie




Java rocks! Games are fun!
« Reply #7 - Posted 2005-03-14 16:06:52 »
Hi guys!

Consider using JAXB. It makes XML processing extremely easy. Have a look at this nice introduction:

http://java.sun.com/developer/technicalArticles/WebServices/jaxb/index.html

I'm using it for a project at work, and it works _extremely_ well. As one of my colleagues said recently, it's probably the only third-party product we've ever used that we haven't complained about a single time yet :-)

Well, read the tutorial. You have my guarantee that it really does work as nicely as the article proposes - at least for XML parsing, I haven't yet tried it for generating XML documents. However, it does have some output formatting capability, so I guess it's fine for this too.

Kind regards,
Ole
Offline William Denniss

JGO Coder


Projects: 2


Fire at will
« Reply #8 - Posted 2005-03-14 20:55:40 »
Hi,

Too late Smiley  we have already implemented everything with Xerces.

Will.
Lineriders - Current Projects & Tech Reviews -- Xith3D Resource -- Odejava Resource
Offline Levent Bayindir

Senior Newbie




Java games rock!
« Reply #9 - Posted 2005-03-16 18:19:31 »
Hi,

As planned before, i tried to implement "save/save as" in jphyswiz and test xode exporting feature.

Here are the problems i found:

1. I need to clone XODEObjects for copy/pasting operations. When i clone a node and tried to add that node under a container (using addChild method) i get an XODEException, since setParent(..) method in XODEObject does not allow to to change parent if you have one already. So we need to modify something there. What are your thoughts?

2. I looked at XODERoot but can not find getDocument method for exporting. Are you sure that you commited the changes?

3. It seems that "adding ability to add/remove child XODEObjects from XODEContainers ..." is in todo list. Isn't this already implemented? This is also a very important requirement for jphyswiz now.

Levent.
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline Levent Bayindir

Senior Newbie




Java games rock!
« Reply #10 - Posted 2005-03-16 19:11:46 »
Addition to second item:

When i used the document object obtained from XODEParser (xodeParser.getDocument()) added-child is not shown after serialization!

So i think Document object is not updated in any way, now.
Offline William Denniss

JGO Coder


Projects: 2


Fire at will
« Reply #11 - Posted 2005-03-16 21:10:19 »
Quote
Hi,

As planned before, i tried to implement "save/save as" in jphyswiz and test xode exporting feature.

Here are the problems i found:

1. I need to clone XODEObjects for copy/pasting operations. When i clone a node and tried to add that node under a container (using addChild method) i get an XODEException, since setParent(..) method in XODEObject does not allow to to change parent if you have one already. So we need to modify something there. What are your thoughts?


EDIT:  see my next post

Quote

2. I looked at XODERoot but can not find getDocument method for exporting. Are you sure that you commited the changes?


It's called "buildDocument" and it's there, I got it in my CVS commit email.

if you can't see it, do a "cvs update -d"

Quote

3. It seems that "adding ability to add/remove child XODEObjects from XODEContainers ..." is in todo list. Isn't this already implemented? This is also a very important requirement for jphyswiz now.


It is on the TODO list as it is not implemented.  It is a trivial change though, and I realise this is very important for you (hence the reason it is on the TODO list).  I will try to do it today.

UPDATED:  see my next post Smiley

Cheers,

Will.
Lineriders - Current Projects & Tech Reviews -- Xith3D Resource -- Odejava Resource
Offline William Denniss

JGO Coder


Projects: 2


Fire at will
« Reply #12 - Posted 2005-03-17 01:26:35 »
Quote
Addition to second item:

When i used the document object obtained from XODEParser (xodeParser.getDocument()) added-child is not shown after serialization!

So i think Document object is not updated in any way, now.



The XML DOM objects are never updated.  In fact the only reason they are even keep and not garbage collected is to aid in debugging (and the javadoc comment on the "Node" reaffirms this).

As this data is just unneeded junk most of the time, the node variable is marked 'transient', and the method scrapDOMObjectCache() exists.

My new XODERoot.buildDocument() can be used on an XODEObject whenever a new XML representation is required.

I believe serialization of XODE classes is possible without using XML (it is also possible with XML using buildDocument()).

Cheers,

Will.
Lineriders - Current Projects & Tech Reviews -- Xith3D Resource -- Odejava Resource
Offline Levent Bayindir

Senior Newbie




Java games rock!
« Reply #13 - Posted 2005-03-17 05:02:40 »
Thanks for the quick replies and works.

Quote
...  The clone method would have to exist in the XODEObject (or an extension of that class) so it is able to call the protected XODEObject.setParent method passing 'null' (the use of that method is explicitally not recommended unless one is very aware of the implications of using it, which in this case we are and it is the correct thing to do).


It seems that i should implement clone() method of XODEObject. I should add a method to XODEUtil class (i could not remember its name now and i do not have the source now) to clone objects using serialization (i gave the reference for alternative serialization method before) and use that method in XODEObject's clone method plus setting the parent null.

Are these changes acceptable for you?

Levent.
Offline Levent Bayindir

Senior Newbie




Java games rock!
« Reply #14 - Posted 2005-03-17 19:01:32 »
I tested it.

After adding deepCopy(Object oldObj)  method to DOMUtil class and implementing clone() method of XODEObject, it worked.

I am waiting for your ack. to commit the changes.

1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
// returns a deep copy of an object
   static public Object deepCopy(Object oldObj) throws Exception
   {
      ObjectOutputStream oos = null;
      ObjectInputStream ois = null;
      try
      {
         ByteArrayOutputStream bos = 
               new ByteArrayOutputStream();
         oos = new ObjectOutputStream(bos);
         
         // serialize and pass the object
         oos.writeObject(oldObj);   
         oos.flush();               
         ByteArrayInputStream bin = 
               new ByteArrayInputStream(bos.toByteArray()); 
         ois = new ObjectInputStream(bin);                  
         
         // return the new object
         return ois.readObject(); 
      }
      catch(Exception e)
      {
         System.out.println("Exception in ObjectCloner = " + e);
         throw(e);
      }
      finally
      {
         oos.close();
         ois.close();
      }
   }


1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
public Object clone() {

            XODEObject object = null;
            
            try {
                  object = (XODEObject)DOMUtil.deepCopy(this);            
            } catch(Exception e1) {
                  System.out.println(e1);
            }
            
            object.setParent(null);
            return object;
      
      }


Thanks.

Levent
Offline William Denniss

JGO Coder


Projects: 2


Fire at will
« Reply #15 - Posted 2005-03-17 21:17:37 »
ACK.

Good stuff Grin

Will.
Lineriders - Current Projects & Tech Reviews -- Xith3D Resource -- Odejava Resource
Pages: [1]
  ignore  |  Print  
 
 
You cannot reply to this message, because it is very, very old.

  Check out our latest community projects!
 
+ Plugged Project +
Latest in Showcase
Add your game!

Add your game by posting it in the WIP section,
or publish it in Showcase.

The first screenshot will be displayed as a thumbnail.
Shameless Plug!
Latest pastebins
wessles (33 views)
2013-11-28 23:37:31
wreed12345 (46 views)
2013-11-23 17:42:34
Damocles (95 views)
2013-11-15 12:23:59
StumpyStrust (75 views)
2013-11-14 14:42:32
StumpyStrust (70 views)
2013-11-14 14:41:43
EliwoodL (80 views)
2013-11-11 10:52:42
EliwoodL (76 views)
2013-11-11 10:52:33
EliwoodL (76 views)
2013-11-11 10:51:49
Samdy (93 views)
2013-11-07 10:06:49
Samdy (83 views)
2013-11-07 10:05:56
Medals in last month
opiop6528x
Spasi15x
wessles15x
HeroesGraveDev13x
CodeHead12x
Riven11x
Groboclown11x
ctomni23110x
theagentd9x
SHC8x
Nate8x
Dxu19947x
doppler7x
philfrei6x
lcass6x
Danny025x
Latest wiki revisions
HotSpot Intrinsics
by Roquen
2013-11-25 17:44:34
How do I start Java Game Development?
by Nate
2013-11-18 18:35:15
Concurrency
by Roquen
2013-11-08 22:39:59
Concurrency
by Roquen
2013-11-08 20:43:31
Concurrency
by Roquen
2013-11-08 15:31:17
Concurrency
by Roquen
2013-11-08 15:20:42
Concurrency
by Roquen
2013-11-08 15:00:50
Resources for learning software design.
by lukasz1985
2013-10-17 16:25:24
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!