Animation

Troubleshooting General Help
1

Hi can anyone post a little example on how to play an animation from a 3d model?



I usually use blender for modelling to m3g into mobile phones… and is really easy to play an animation(walking person for example) just load a SkinnedMesh and play the animation like obj.animate(time).



Is that easy using jmonkey?



can anyone post a simple example on loading a model that has an animation and play it? which extension is good for animation that blender can export?



Thanks



Daniel

2

MD5 would be the format you would likely want to use.



Look here: http://www.jmonkeyengine.com/jmeforum/index.php?topic=7479.0

3

Look at HelloModelLoading in the tests, this is some code from the User-Code section which can help you load any model format that's listed in the if-statements (3ds, obj, md2, md3, or ms3d).

private Node loadModel(String fileName) {
   Spatial model = null;

   try {
      String format = fileName.substring(fileName.lastIndexOf(".") + 1, fileName.length());

      File binary = new File(fileName.substring(0, fileName.lastIndexOf(".") + 1) + "jme");
      if (!binary.exists()) {
         FormatConverter formatConverter = null;

         if (format.equalsIgnoreCase("ase")) {
            formatConverter = new AseToJme();
         } else if (format.equalsIgnoreCase("3ds")) {
            formatConverter = new MaxToJme();
         } else if (format.equalsIgnoreCase("md2")) {
            formatConverter = new Md2ToJme();
         } else if (format.equalsIgnoreCase("md3")) {
            formatConverter = new Md3ToJme();
         } else if (format.equalsIgnoreCase("ms3d")) {
            formatConverter = new MilkToJme();
         } else if (format.equalsIgnoreCase("obj")) {
            formatConverter = new ObjToJme();
         } else if (format.equalsIgnoreCase("x3d")) {
            formatConverter = new X3dToJme();
         }

         File file = new File(fileName);
         formatConverter.setProperty("texurl", file.getParentFile().toURI().toURL());
         formatConverter.setProperty("mtllib", file.toURI().toURL());

         ByteArrayOutputStream output = new ByteArrayOutputStream();

         formatConverter.convert(file.toURI().toURL().openStream(), output);
         BinaryImporter importer = BinaryImporter.getInstance();
         model = (Spatial) importer.load(new ByteArrayInputStream(output.toByteArray()));

         // BinaryExporter.getInstance().save((Savable) model, binary);
      } else {
         model = (Spatial) BinaryImporter.getInstance().load(binary.toURI().toURL());
      }
   } catch (Exception exception) {
      exception.printStackTrace();
      model = new Box("box", new Vector3f(), 15, 15, 15);
   }

   Node node = new Node("model");
   node.attachChild(model);

   return node;
}




When you load a model, all animation ranges will play. You fix that by doing something like this:

JointController cntrl = (JointController)(myModel.getController(0));
cntrl.setTimes(1, 50);
cntrl.setRepeatType(JointController.RT_WRAP);



That would play frames 1 - 50 and repeat.