Blender to Collada

Troubleshooting General Help
1

I'd like to start using the Collada format for my game models, however I am running into a problem with loading models exported from Blender using the export script from Illusoft.  I have a simple model (a square tile made up of two triangles) that I am trying to load using ColladaImporter, and I am getting the follow exception:



java.lang.NumberFormatException: For input string: ""
   at java.lang.NumberFormatException.forInputString(Unknown Source)
   at java.lang.Integer.parseInt(Unknown Source)
   at java.lang.Integer.parseInt(Unknown Source)
   at com.jmex.model.collada.ColladaImporter.processTriMesh(Unknown Source)
   at com.jmex.model.collada.ColladaImporter.processMesh(Unknown Source)
   at com.jmex.model.collada.ColladaImporter.processGeometry(Unknown Source)
   at com.jmex.model.collada.ColladaImporter.processCollada(Unknown Source)
   at com.jmex.model.collada.ColladaImporter.load(Unknown Source)
   at com.jmex.model.collada.ColladaImporter.load(Unknown Source)
   at net.rpgtoolset.engine.MainGameState.setupTerrain(MainGameState.java:222)



Below is a link to the Collada file and texture, any help would be appreciated.  Thanks!

http://www.zeromatrix.net/grass_tile.zip
2

dunno about collada blender's exporter yet -grab plugins allways from plugin author page, no the native-  but…test about selecting and leave selected the model before exporting, with a open 3d window, in blender…who knows.



cant tell you why I suspect this. But I have that suspiction.


3

I just successfully loaded your grass quad here with no modifications to the file.

4

I grabbed and compiled all of the latest jME packages and I am still running into the same problem.  I modified the test Collada loading source to this:


URL url = TestColladaLoading.class.getClassLoader().getResource("collada/");
InputStream tile = TestColladaLoading.class.getClassLoader().getResourceAsStream("collada/grass.dae");
ColladaImporter.load(tile, url, "model");



When it gets to the ColladaImporter.load line, it gives the follow error:


WARNING: Error processing geometry library information - java.lang.NumberFormatException: For input string: ""
java.lang.NumberFormatException: For input string: ""



I stepped through the processTriMesh method, and apparently it is throwing the exception at this line:


int set = Integer.parseInt(tri.getinputAt(i).getset().toString());


for this line of XML:


<input offset="1" semantic="TEXCOORD" source="#Cube-Geometry-UV"/>



Apparently it's trying to parse a "set" attribute that isn't there.  I added that attribute into my file (gave it a value of 1 just to see what would happen), and now the model will load and display correctly, but there is no texture... Any ideas?
5

perhaps we have some collada updates to check in here?

6

yeah, committed now.

7

Seems to be working as it should now, thanks for the help!

8

hello :wink:



another problem loading a mesh exported from blender.



INFO: LWJGLRenderer created. W:  1024H: 768

13.12.2006 13:51:34 com.jme.renderer.AbstractCamera <init>

INFO: Camera created.

13.12.2006 13:51:34 com.jme.util.lwjgl.LWJGLTimer <init>

INFO: Timer resolution: 1000 ticks per second

13.12.2006 13:51:34 com.jme.scene.Node <init>

INFO: Node created.

13.12.2006 13:51:34 com.jme.scene.Node <init>

INFO: Node created.

13.12.2006 13:51:34 com.jme.scene.Node attachChild

INFO: Child (FPS label) attached to this node (FPS node)

13.12.2006 13:51:34 com.jme.scene.Node <init>

INFO: Node created.

Version: 1.4.0

13.12.2006 13:51:35 com.jme.scene.Node <init>

INFO: Node created.

13.12.2006 13:51:35 com.jme.scene.Node attachChild

INFO: Child (Tower_MESH) attached to this node (Tower_MESH-skin_node)

13.12.2006 13:51:35 com.jme.scene.Node <init>

INFO: Node created.

13.12.2006 13:51:35 com.jme.scene.Node <init>

INFO: Node created.

13.12.2006 13:51:35 com.jme.scene.Node <init>

INFO: Node created.

13.12.2006 13:51:35 com.jme.scene.Node attachChild

INFO: Child (Tower) attached to this node (Scene)

13.12.2006 13:51:35 com.jme.scene.Node attachChild

INFO: Child (Tower_MESH-skin_node) attached to this node (Tower)

13.12.2006 13:51:35 com.jme.scene.Node <init>

INFO: Node created.

13.12.2006 13:51:35 com.jme.util.ErrorManager addError

WARNUNG: Bone Arm1 is not attached to any vertices.

13.12.2006 13:51:35 com.jme.scene.Node attachChild

INFO: Child (Arm1) attached to this node (Scene)

13.12.2006 13:51:35 com.jme.scene.Node detachChildAt

INFO: Child removed.

13.12.2006 13:51:35 com.jme.scene.Node attachChild

INFO: Child (Arm1) attached to this node (Scene)

13.12.2006 13:51:35 com.jme.scene.Node attachChild

INFO: Child (Scene) attached to this node (newModel)

java.lang.NullPointerException

at com.jme.animation.SkinNode.updateSkin(Unknown Source)

at com.jme.animation.SkinNode.updateGeometricState(Unknown Source)

at com.jmex.model.collada.ColladaImporter.optimizeGeometry(Unknown Source)

at com.jmex.model.collada.ColladaImporter.processCollada(Unknown Source)

at com.jmex.model.collada.ColladaImporter.load(Unknown Source)

at com.jmex.model.collada.ColladaImporter.load(Unknown Source)

at de.mistudios.test.TestObjectLoading.createObjects(TestObjectLoading.java:102)

at de.mistudios.test.TestObjectLoading.simpleInitGame(TestObjectLoading.java:73)

at com.jme.app.BaseSimpleGame.initGame(Unknown Source)

at com.jme.app.SimplePassGame.initGame(Unknown Source)

at com.jme.app.BaseGame.start(Unknown Source)

at de.mistudios.test.TestObjectLoading.main(TestObjectLoading.java:35)





the model can be loaded from here:

http://jxg.mi-studios.de/index.php?option=com_docman&task=doc_download&gid=1&Itemid=34



i use the code from colladaTest-class to load this model withour the "man_walk"-stuff.