setScale doesn't seem to work for serialized objects.

[zammbi]

I was converting one of my models from 3ds to a serialized object with jBush. Basically just a simple swap but setScale in my code doesn't seem to work(works fine for the 3ds model). I even scaled it in jBush also but that had no effect.

Is this some kind of bug or am I missing something?

[EgonOlsen]

setScale() just modifies the rotation matrix. I don't see why this shouldn't work on serialized objects...it actually has nothing to do with the way the object has been created!? Can you create a test case for this?

[zammbi]

Ok, I'll create one now.

[zammbi]

Odd new problem when I leave out 'build' method it crashes. Its mostly your helloworld example, but just loading the stadium model.

03-06 12:00:10.842: I/jPCT-AE(3523): [ 1330988410844 ] - WARNING: There's a problem with the object list not being consistent during rendering. This is often caused by concurrent modification of jPCT objects on a thread different from the rendering thread!
03-06 12:00:10.842: I/jPCT-AE(3523): [ 1330988410846 ] - ERROR: java.lang.NullPointerException
03-06 12:00:10.842: I/jPCT-AE(3523):    at com.threed.jpct.Object3D.transformVertices(Object3D.java:6316)
03-06 12:00:10.842: I/jPCT-AE(3523):    at com.threed.jpct.World.renderScene(World.java:1105)
03-06 12:00:10.842: I/jPCT-AE(3523):    at com.threed.jpct.example.HelloWorld$MyRenderer.onDrawFrame(HelloWorld.java:251)
03-06 12:00:10.842: I/jPCT-AE(3523):    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1127)
03-06 12:00:10.842: I/jPCT-AE(3523):    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:975)
03-06 12:00:10.862: W/dalvikvm(3523): threadid=43: thread exiting with uncaught exception (group=0x2aaca408)
03-06 12:00:10.862: E/AndroidRuntime(3523): Uncaught handler: thread GLThread 22 exiting due to uncaught exception
03-06 12:00:10.862: E/AndroidRuntime(3523): java.lang.RuntimeException: [ 1330988410846 ] - ERROR: java.lang.NullPointerException
03-06 12:00:10.862: E/AndroidRuntime(3523):    at com.threed.jpct.Object3D.transformVertices(Object3D.java:6316)
03-06 12:00:10.862: E/AndroidRuntime(3523):    at com.threed.jpct.World.renderScene(World.java:1105)
03-06 12:00:10.862: E/AndroidRuntime(3523):    at com.threed.jpct.example.HelloWorld$MyRenderer.onDrawFrame(HelloWorld.java:251)
03-06 12:00:10.862: E/AndroidRuntime(3523):    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1127)
03-06 12:00:10.862: E/AndroidRuntime(3523):    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:975)
03-06 12:00:10.862: E/AndroidRuntime(3523):    at com.threed.jpct.Logger.log(Logger.java:189)
03-06 12:00:10.862: E/AndroidRuntime(3523):    at com.threed.jpct.Logger.log(Logger.java:148)
03-06 12:00:10.862: E/AndroidRuntime(3523):    at com.threed.jpct.World.renderScene(World.java:1121)
03-06 12:00:10.862: E/AndroidRuntime(3523):    at com.threed.jpct.example.HelloWorld$MyRenderer.onDrawFrame(HelloWorld.java:251)
03-06 12:00:10.862: E/AndroidRuntime(3523):    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1127)
03-06 12:00:10.862: E/AndroidRuntime(3523):    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:975)
03-06 12:00:10.872: I/dalvikvm(3523): threadid=7: reacting to signal 3
03-06 12:00:10.882: I/dalvikvm(3523): Wrote stack trace to '/data/anr/traces.txt'

Eclipse project: http://www.mediafire.com/?8eaklsygi06jnp1

However it seems it scales fine in this example which is annoying... So trying to figure out what's the difference.

[zammbi]

Ok found where the problem happens.

It's when I merge the object. It removes the scale, your right it has nothing to do with serialized objects.

Code Select Expand

Object3D.mergeObjects(ground, model);

How do I keep the scale when I merge? There is no scaleMesh method that I can see.

[EgonOlsen]

You can use rotateMesh() for this. It also applies the scale, because the scale is part of that matrix.

[zammbi]

You can use rotateMesh() for this. It also applies the scale, because the scale is part of that matrix.

Ah thanks.
I hope that crash helps.

[EgonOlsen]

I hope that crash helps.

Which version of jPCT is that? Object3D don't even have this line:

Code Select Expand


at com.threed.jpct.Object3D.transformVertices(Object3D.java:[b]6316[/b])


[zammbi]

That was the current link on the site and just editing the example. However it did crash the beta version also. Do you want the stack trace of that one?

[EgonOlsen]

Yes, that would help...

[zammbi]

Basically the same, but different line numbers.

03-07 09:36:10.628: I/jPCT-AE(8844): OpenGL vendor:     Qualcomm
03-07 09:36:10.628: I/jPCT-AE(8844): OpenGL renderer:   Adreno 200
03-07 09:36:10.628: I/jPCT-AE(8844): OpenGL version:    OpenGL ES-CM 1.1
03-07 09:36:10.628: I/jPCT-AE(8844): OpenGL renderer initialized (using 2 texture stages)
03-07 09:36:10.638: I/jPCT-AE(8844): Adding Lightsource: 0
03-07 09:36:10.648: I/jPCT-AE(8844): Loading Texture...
03-07 09:36:10.648: I/jPCT-AE(8844): Loading Texture...
03-07 09:36:11.088: I/jPCT-AE(8844): Loading Texture...
03-07 09:36:11.278: I/jPCT-AE(8844): Normal vectors calculated in 2ms!
03-07 09:36:11.378: I/jPCT-AE(8844): Memory usage before compacting: 7763 KB used out of 8135 KB. Max. memory available to the VM is 24576 KB.
03-07 09:36:11.658: I/jPCT-AE(8844): Memory usage after compacting: 7749 KB used out of 8135 KB. Max. memory available to the VM is 24576 KB.
03-07 09:36:11.658: I/jPCT-AE(8844): Saving master Activity!
03-07 09:36:11.668: I/jPCT-AE(8844): Subobject of object 0/object2 compiled to flat fixed point data using 48 vertices in 3ms!
03-07 09:36:11.668: I/jPCT-AE(8844): Object 0/object2 compiled to 1 subobjects in 9ms!
03-07 09:36:11.668: I/jPCT-AE(8844): Object 'object2' uses one texture set!
03-07 09:36:11.678: I/jPCT-AE(8844): [ 1331066171678 ] - WARNING: There's a problem with the object list not being consistent during rendering. This is often caused by concurrent modification of jPCT objects on a thread different from the rendering thread!
03-07 09:36:11.678: I/jPCT-AE(8844): [ 1331066171685 ] - ERROR: java.lang.NullPointerException
03-07 09:36:11.678: I/jPCT-AE(8844):    at com.threed.jpct.Object3D.transformVertices(Object3D.java:5783)
03-07 09:36:11.678: I/jPCT-AE(8844):    at com.threed.jpct.World.renderScene(World.java:1047)
03-07 09:36:11.678: I/jPCT-AE(8844):    at com.threed.jpct.example.HelloWorld$MyRenderer.onDrawFrame(HelloWorld.java:267)
03-07 09:36:11.678: I/jPCT-AE(8844):    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1332)
03-07 09:36:11.678: I/jPCT-AE(8844):    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1116)
03-07 09:36:11.698: W/dalvikvm(8844): threadid=8: thread exiting with uncaught exception (group=0x40020ac0)
03-07 09:36:11.728: E/AndroidRuntime(8844): FATAL EXCEPTION: GLThread 9
03-07 09:36:11.728: E/AndroidRuntime(8844): java.lang.RuntimeException: [ 1331066171685 ] - ERROR: java.lang.NullPointerException
03-07 09:36:11.728: E/AndroidRuntime(8844):    at com.threed.jpct.Object3D.transformVertices(Object3D.java:5783)
03-07 09:36:11.728: E/AndroidRuntime(8844):    at com.threed.jpct.World.renderScene(World.java:1047)
03-07 09:36:11.728: E/AndroidRuntime(8844):    at com.threed.jpct.example.HelloWorld$MyRenderer.onDrawFrame(HelloWorld.java:267)
03-07 09:36:11.728: E/AndroidRuntime(8844):    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1332)
03-07 09:36:11.728: E/AndroidRuntime(8844):    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1116)
03-07 09:36:11.728: E/AndroidRuntime(8844):    at com.threed.jpct.Logger.log(Logger.java:189)
03-07 09:36:11.728: E/AndroidRuntime(8844):    at com.threed.jpct.Logger.log(Logger.java:148)
03-07 09:36:11.728: E/AndroidRuntime(8844):    at com.threed.jpct.World.renderScene(World.java:1062)
03-07 09:36:11.728: E/AndroidRuntime(8844):    at com.threed.jpct.example.HelloWorld$MyRenderer.onDrawFrame(HelloWorld.java:267)
03-07 09:36:11.728: E/AndroidRuntime(8844):    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1332)
03-07 09:36:11.728: E/AndroidRuntime(8844):    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1116)

[EgonOlsen]

I think that i've fixed this. Please re-download the beta jar and give it a try. I've obviously never tested this combination...it doesn't happen if you load the model from a file or call either build() or compile() on a deserialized one.

[zammbi]

No longer crashes