hi,

javadocs state that, when GL surface is lost, all OpenGL resources -such as textures- are also lost. does this mean Object3D's are also lost and need to be loaded/created again ? or is it
enough to reload textures and set them on objects ?

thanks

here are Android versions of two small and (hopefully) handy classes for blitting text and images. more information can be found on original thread

TexturePack packs several arbitrary sized images into a jPCT texture. it automatically layouts images and adjusts Texture size.

AGLFont creates GL renderable (blittable) fonts out of Android fonts.

Rectangle is used by AGLFont.

Bones Android demo app demonstrates how to use it

and an addition to GLFont by nmare which allows multi-line and multi-color text blits

cheers
r a f t

edit: updated the links and fixed getStringBounds(..) issue
edit2: added link to nmare's addition

i have a rotation matrix multiplied by a uniform scale matrix.

* SimpleVector.rotate(matrix) also applies scaling to vector, is this intentional ?
* how can i check rotation part (upper 3x3) of matrix has no scale information ?
* how can i clear scaling from matrix ? assuming i dont know scaling value

thanks

i've noticed serialVersionUID of Matrix is changed in desktop version and that is also different from AE version. is this really necessary ? looking inside with javap, it seems data structure is not changed. all three (1.20, 1.21.alpha, AE) has same structure:

    float[][] mat;
    float[] mat0;
    float[] mat1;
    float[] mat2;
    float[] mat3;

so i suppose they can share same serialVersionUID, unless of course contents of these arrays hasn't changed ?

java.lang.NullPointerException
    at com.threed.jpct.Animation.interpolateLinear(Unknown Source) (Animation.java:343 in first release)
    at com.threed.jpct.Animation.doAnimation(Unknown Source)
    at com.threed.jpct.Object3D.animate(Unknown Source)
        ..

my first experession is not that bad. karga boy (810 poly) renders 30+ fps in emulator without animation and background. your demo app run ~10 fps. however debugging kills performace, loading time increases and fps drops down to 8-10. i also get out of memory time to time while restarting the application. log says it cant find memory for bitmap

btw, my friend told eclipse can debug app in phone which sounds good..

i've faced something very strange: many of Bones classes has constructors or methods taking Ardor classes as parameters. as they hold no fields to Ardor classes, they are expected to be loaded and run without ardor. for all but one this is the case. that single one even cannot be loaded by classloader because of a thrown ClassNotFoundException for an ardor interface. the unfound interface even is not imported 

i've further digged the situation and tried to isolate the problem by commenting out some code.

that class passes some of ardor classes to some static helper methods in another class. static method takes ardor interface as parameter. if i change the method to take implementation class instead of interface as parameter, the problem vanishes.. very odd thing, never faced before 

for 2 rotations R1 and R2, let Q1 and Q2 quaternion representations and M1 and M2 matrix representations of these rotations. M1 and M2 are row major matrices like jPCT's

does Q1xQ2 represent the same rotation with M1xM2 ?

Bones is a animation API for jPCT. It supports skeletal and pose animations. It's aimed to be small library with no additional dependencies where possible.

Bones can be found at its home page. The download pack contains the source code, necessary libraries, Eclipse project files and a few demo applications. It's definitely free software with a "Do whatever with it" license.

Note: As the API evolved, following information is not exactly correct anymore. Please refer to Bone's home page for up to date information.



Bones initially loads skinning information via Ardor3D's Collada loader. Out of this information, a series of SkinnedObject3D's are constructed. They have mesh data, textures coordinates and skinning information. It's enough to set their textures and call build() to prepare them to be added into a jPCT world.

After this initial loading, they can be saved in a compact form. Saved objects can be later reloaded with loader, with no dependencies to Ardor3D

At the moment, the project is at "Proof of Concept" state. Skinning and mesh deformation works, but skeleton poses can only be created programmatically. Hence it's not really useful for games at the moment. This is so since, Ardor3D's loader only support this much at the moment. As they progress, Bones will progress..

Cheers
r a f t

Edit: Updated the link with some code cleanup and documentation.
Edit2: Updated title and description to reflect changes in the API