hi, I write a jpct program, where has many object3D. some times a random bug happened.
one object3D's texture becomes another object3D's texture.
when the program run, it may replace and unload texture , do you have any idea ?

hi, is this possible ? render movie to a 3D object .

Dear Egon,
     some android based smart TV sets support output two different
3d images  (one for left eye and one for right eye ) to support real 3D.
I wonder how to do this with jPCT-AE ?
does jPCT support two cameras  in a World ?
so with these two cameras (one for left eye, one for right eye), I can
render scene for different eyes ?
can I instantiate two FrameBuffers in a same GLSurfaceView (each one occupies half of the surface view)?
and render the World (with different camera) to each of them ?

hi, I usually develop my app first on PC with jPCT PC version,
when I think it is bug free, I port it to jPCT android with only
a little effort. this is good.
but I found on jPCT PC version Light is com.threed.jpct.util.Light
and jPCT android version Light is com.threed.jpct.Light.
when porting , I have to change the import statement.
I dont know why the Light sits on different package ?

hi, my colleague have give me a model which he rendered in After Effect.
and now I load the obj into jPCT and want to re-render it, but the
result is not the same. the attachment is the two rendered picture.

I got object position, and light position, and camera position from my colleague,
but I dont know how to set camera direction and orientation (I know the method,
but I dont know how to calucate the correct arguments to feed the method)

any hint(code snippet) to help me re-render the object ? thanks very much.


[attachment deleted by admin]

I enable OpenGL ES 2.0 on my apps with
   <uses-feature android:glEsVersion="0x00020000" android:required="true" >
and setEGLContextClientVersion(2);

and when I want to revert to OpenGL ES 1.1 , I commented out them,
but jPCT seems still loading shaders and called unimplement OpenGL  ES 2.0 api.

log follows,

04-05 11:17:53.607: D/dalvikvm(3100): GC_EXPLICIT freed 4 objects / 128 bytes in 48ms
04-05 11:17:53.787: I/jPCT-AE(3100): texture: board4.jpg loaded.
04-05 11:17:54.779: D/libEGL(3100): loaded /system/lib/egl/libGLES_android.so
04-05 11:17:54.795: D/libEGL(3100): loaded /system/lib/egl/libEGL_POWERVR_SGX530_121.so
04-05 11:17:54.802: D/libEGL(3100): loaded /system/lib/egl/libGLESv1_CM_POWERVR_SGX530_121.so
04-05 11:17:54.818: D/libEGL(3100): loaded /system/lib/egl/libGLESv2_POWERVR_SGX530_121.so
04-05 11:17:55.576: D/dalvikvm(3100): GC_EXTERNAL_ALLOC freed 136 objects / 6960 bytes in 58ms
04-05 11:17:55.607: I/dalvikvm(3100): Could not find method android.opengl.GLES20.glVertexAttribPointer, referenced from method com.threed.jpct.GL20.glColorPointer
04-05 11:17:55.607: W/dalvikvm(3100): VFY: unable to resolve static method 132: Landroid/opengl/GLES20;.glVertexAttribPointer (IIIZII)V
04-05 11:17:55.607: D/dalvikvm(3100): VFY: replacing opcode 0x77 at 0x0010
04-05 11:17:55.607: I/dalvikvm(3100): Could not find method android.opengl.GLES20.glDrawElements, referenced from method com.threed.jpct.GL20.glDrawElements
04-05 11:17:55.607: W/dalvikvm(3100): VFY: unable to resolve static method 66: Landroid/opengl/GLES20;.glDrawElements (IIII)V
04-05 11:17:55.607: D/dalvikvm(3100): VFY: replacing opcode 0x71 at 0x0000
04-05 11:17:55.607: D/dalvikvm(3100): VFY: dead code 0x0003-0003 in Lcom/threed/jpct/GL20;.glDrawElements (IIII)V
04-05 11:17:55.615: I/dalvikvm(3100): Could not find method android.opengl.GLES20.glVertexAttribPointer, referenced from method com.threed.jpct.GL20.glNormalPointer
04-05 11:17:55.615: W/dalvikvm(3100): VFY: unable to resolve static method 132: Landroid/opengl/GLES20;.glVertexAttribPointer (IIIZII)V
04-05 11:17:55.615: D/dalvikvm(3100): VFY: replacing opcode 0x77 at 0x0010
04-05 11:17:55.615: I/dalvikvm(3100): Could not find method android.opengl.GLES20.glVertexAttribPointer, referenced from method com.threed.jpct.GL20.glTexCoordPointer
04-05 11:17:55.615: W/dalvikvm(3100): VFY: unable to resolve static method 132: Landroid/opengl/GLES20;.glVertexAttribPointer (IIIZII)V
04-05 11:17:55.615: D/dalvikvm(3100): VFY: replacing opcode 0x77 at 0x0018
04-05 11:17:55.615: I/dalvikvm(3100): Could not find method android.opengl.GLES20.glVertexAttribPointer, referenced from method com.threed.jpct.GL20.glVertexPointer
04-05 11:17:55.615: W/dalvikvm(3100): VFY: unable to resolve static method 132: Landroid/opengl/GLES20;.glVertexAttribPointer (IIIZII)V
04-05 11:17:55.623: D/dalvikvm(3100): VFY: replacing opcode 0x77 at 0x0010
04-05 11:17:55.623: I/dalvikvm(3100): Could not find method android.opengl.GLES20.glVertexAttribPointer, referenced from method com.threed.jpct.GL20.setTangents
04-05 11:17:55.623: W/dalvikvm(3100): VFY: unable to resolve static method 132: Landroid/opengl/GLES20;.glVertexAttribPointer (IIIZII)V
04-05 11:17:55.623: D/dalvikvm(3100): VFY: replacing opcode 0x77 at 0x001f
04-05 11:17:55.693: I/jPCT-AE(3100): Initializing GL20 render pipeline...
04-05 11:17:55.693: I/jPCT-AE(3100): Support for VBO when running OpenGL ES 2.0 is faulty in Android 2.2...VBO will be disabled!
04-05 11:17:55.693: I/jPCT-AE(3100): Accessing shaders via JAR!
04-05 11:17:55.693: I/jPCT-AE(3100): Loading default shaders !
04-05 11:17:55.693: I/jPCT-AE(3100): 0 shaders in replacement map!
04-05 11:17:55.693: I/jPCT-AE(3100): Default fragment shader is: /defaultFragmentShader.src
04-05 11:17:56.412: I/jPCT-AE(3100): Loading file from InputStream
04-05 11:17:56.412: I/jPCT-AE(3100): Text file from InputStream loaded...2008 bytes
04-05 11:17:56.420: I/jPCT-AE(3100): Default vertex shader is: /defaultVertexShader.src
04-05 11:17:56.420: I/jPCT-AE(3100): Loading file from InputStream
04-05 11:17:56.427: I/jPCT-AE(3100): Text file from InputStream loaded...3897 bytes
04-05 11:17:56.427: I/jPCT-AE(3100): Compiling shader program!
04-05 11:17:56.435: E/libEGL(3100): called unimplemented OpenGL ES API
04-05 11:17:56.435: E/libEGL(3100): called unimplemented OpenGL ES API
04-05 11:17:56.435: E/libEGL(3100): called unimplemented OpenGL ES API
04-05 11:17:56.435: E/libEGL(3100): called unimplemented OpenGL ES API
04-05 11:17:56.435: E/libEGL(3100): called unimplemented OpenGL ES API
04-05 11:17:56.435: I/jPCT-AE(3100): Could not compile shader 35633:
04-05 11:17:56.435: E/libEGL(3100): called unimplemented OpenGL ES API
04-05 11:17:56.435: I/jPCT-AE(3100): [ 1333595876439 ] - ERROR: Failed to load and compile vertex shaders!
04-05 11:17:56.435: I/jPCT-AE(3100): [ 1333595876439 ] - WARNING: Unable to load shader!
04-05 11:17:56.482: I/jPCT-AE(3100): [ 1333595876484 ] - ERROR: java.lang.RuntimeException: [ 1333595876439 ] - ERROR: Failed to load and compile vertex shaders!
04-05 11:17:56.482: I/jPCT-AE(3100): at com.threed.jpct.Logger.log(Logger.java:189)
04-05 11:17:56.482: I/jPCT-AE(3100): at com.threed.jpct.GLSLShader.loadProgram(GLSLShader.java:655)
04-05 11:17:56.482: I/jPCT-AE(3100): at com.threed.jpct.GLSLShader.<init>(GLSLShader.java:254)
04-05 11:17:56.482: I/jPCT-AE(3100): at com.threed.jpct.GL20.<init>(GL20.java:118)
04-05 11:17:56.482: I/jPCT-AE(3100): at java.lang.Class.newInstanceImpl(Native Method)
04-05 11:17:56.482: I/jPCT-AE(3100): at java.lang.Class.newInstance(Class.java:1429)
04-05 11:17:56.482: I/jPCT-AE(3100): at com.threed.jpct.GLRenderer.init(GLRenderer.java:368)



I have a  thin board-like  object， when I
call  obj.rotateX(), the board will rotate around its upper edge,
now I want to make it rotate around its lower edge, what should
I do with jpct ? thanks.

my app use jpct-ae and can running on a ARM-based machine,
but can not install on a MIPS-based machine, I think jpct-ae is
pure java, but why it can not installed on a mips-based machine ?
we have another 3D app written in OpenGL ES, and can run in both
ARM-based machine and MIPS-based machine.

I use two triangle to form a square, and use a serial of png picture  to do frame animation.
when animating, some animation make the object edge blinks. I dont know what's the cause .


float[] coord_menu  = {
    0.0f, 0.0f, 0.0f,
    0.0f,10.0f, 0.0f,
    10.0f,10.0f, 0.0f,
    10.0f, 0.0f, 0.0f,
    };
    float[] uvs = {
    0.0f, 0.0f,
    0.0f,1.0f,
    1.0f,1.0f,
    1.0f,0.0f,
    };
    int[] indices = {
    0,1,2,
    2,3,0,   
    };
   
    Object3D menu = new Object3D(coord_menu,uvs,indices,TextureManager.TEXTURE_NOTFOUND);



       I use menu.setTexture() to set a series of texture to make the menu animating, when disable
transparent, the menu's edge blinks, with transparent enable,  the blinking exist also.

hi, I have two  jPCT-AE activity, activity A starts activity B, after back from B to A, some objects
and textures of activity A lost, not show on the screen, what's the problem here ? thanks.

=========== renderer resume code =================

public void onSurfaceChanged(GL10 gl, int width, int height) {
// TODO Auto-generated method stub
if (fb == null) {
Logger.log("==== Launcher launch: " +width+"X" +height);
fb = new FrameBuffer(gl, width, height);
mLauncher.tearDown();
mLauncher.setup();
mLauncher.setFrameBuffer(fb);
mLauncher.setFrameBlitter(new AndroidFrameBlitter(fb));

}else{
fb.dispose();
fb = new FrameBuffer(gl, width, height);

mLauncher.setFrameBuffer(fb);
mLauncher.setFrameBlitter(new AndroidFrameBlitter(fb));
}
}


ps:  activity B starts a normal android ui activity C , and when back from C to B, the objects and texture is ok.
the renderer code is similar.

what's the exact format of  param  src  in ITextueEffect. apply(int[] dest,  int src[]) ?
I have a  128x128 texture and in apply() , I found src.length is 16513., but 128x128=16384
they are not the same.

I found dalvik vm's heap memeory is very limited, my app just use some textures and load 2 models,
and the dalvik vm throws OutOfMemoryError exception.
I am doubtl how other people implement 3d game in android, how do you manage the memory ?

please see the attachement. I want to let the icon's black background
be transparent,  and do a setTransparent(0) on the icon. the result
is the icon seems faded than before, how can I keep it as before ?
thanks.

[attachment deleted by admin]

I do a setTexture on my model , and setup keyframe animation for it,
but after animate, the model become black, seems lost its texture ,
how can I keep the texture ? should re setTexture after each frame ?
thanks.

My colleague have made  a model for me. He only apply some material to the model, and not texture.
the model looks realistic  in Cinema 4D. and he export the model to .3ds file, and I load this file to jPCT,
the model looks black in jPCT,   how can I make it looks realistic as it in Cinema 4D ? thanks.

hi,  my app will run on a custom hardware, and it only support opengl es 1.0,
so how should  I implement anti-alias on my app with jPCT-AE ? thanks.

I have a dummy Object, which has a child Object called Object A, vertex a is one of A's vertex,
I want to project vertex a to screen, it seems that I can not just use Interact2D.project2D3D
and take a as its argument to get the proper 2D coordinate, so what should I do ? thanks.

said I want to rotate a rectangle around a axis which is parallel to XAxis, how can I do this in jPCT,
can someone show me some code ? I am new to opengl and jPCT programming. thanks.

hi,
     I am experimenting Animation with the following code:

   private class MyVertexController extends GenericVertexController{
    /**
*
*/
private static final long serialVersionUID = 1L;
private float mOff = 0.0f;
    public MyVertexController(float off){
    mOff = off;
    }
@Override
public void apply() {
// TODO Auto-generated method stub
SimpleVector[] src = this.getSourceMesh();
SimpleVector[] dst = this.getDestinationMesh();
Logger.log("src length: "+src.length+" dst length: "+dst.length);
for(int i=0; i<src.length && i<dst.length; i++){
dst[i].x = src[i].x + mOff;
}

}
   
    }
    private void setupAnimate(Object3D obj){
   
    obj.build();
    Mesh mesh = obj.getMesh();
   
    Object3D obj1 = obj.cloneObject();
    Object3D obj2 = obj.cloneObject();
    //world.addObject(obj1);
    //world.addObject(obj2);
   
    Mesh mesh1 = mesh.cloneMesh(true);
    obj1.setMesh(mesh1);
    //obj1.rotateX(1.4f);
    //obj1.rotateMesh();
   
    obj1.build();
    if(mesh1.setVertexController(new MyVertexController(0.0f), true))
    Logger.log("vertex controller set for mesh1");
    mesh1.applyVertexController();

    Mesh mesh2 = mesh.cloneMesh(true);
    obj2.setMesh(mesh2);
    obj2.build();
    if(mesh2.setVertexController(new MyVertexController(10.0f), true))
    Logger.log("vertex controller set for mesh2");
    mesh2.applyVertexController();
   
    Animation ani = new Animation(2);
   
    ani.createSubSequence("main");
   
    ani.addKeyFrame(mesh1);
    ani.addKeyFrame(mesh2);
    ani.setInterpolationMethod(Animation.LINEAR);
    obj.setAnimationSequence(ani);
   
    obj.setMesh(mesh1.cloneMesh(true));
    obj.build();
   
    }


the setupAnimate()  would setup animation for my object. in the  rendering loop, I call  obj.animation(index) to do animation, but the object stay still always.  do I doing something wrong in the setup code ? thanks.

hi,
     I am working a opengl demo using jpct-AE, and I am new to opengl and jpct-ae.
can somebody show me some code about how to do texture mapping in jpct-ae ?
just simply setTexture of a Object3D seems can not get a good looking. help please.
thanks.