venusdharan / android-gl Goto Github PK

I would expect a smoother animation. what  i see on the screen doesn't make
sence. It is animated, but with no logic...

Problem occurs at next lines of code:

this.frameCount = model.getAnimation(0).getEndFrame();
this.frameCount = 16;
this.vertices = new float[frameCount][];
this.normals = new float[frameCount][];
for (int i = 0; i < frameCount; ++i) {
     loadMesh(model.getFrame(i).getMesh(), i);
}


So my model doesn't have animation frames but look at here:
this.frameCount = model.getAnimation(0).getEndFrame(); //returns 1
this.frameCount = 16;
and app will crash at line:
     loadMesh(model.getFrame(i).getMesh(), i);
with index out of boudns

Please manage this.

If you give a sample how to load an .obj file and how to draw it will be 
perfect.
Thanks

Thank you very much for sharing the codes. It tooks me a lot of time to 
understand it, and I found a problem in the rotateY function. I have corrected 
the code, as shown at below:


    public static void rotateY(float[] v, float angle, float[] out) {
        float[][] R = new float[4][4];
        R[0][0] = (float)Math.cos(angle);
        R[0][2] = (float)-Math.sin(angle);
        R[2][0] = (float)Math.sin(angle);
        R[2][2] = (float)Math.cos(angle);
        R[1][1] = R[3][3] = 1;

        multiply(R, v, out);
    }

    public static void rotateX(float[] v, float angle, float[] out) {
        float[][] R = new float[4][4];
        R[1][1] = (float)Math.cos(angle);
        R[1][2] = (float)-Math.sin(angle);
        R[2][1] = (float)Math.sin(angle);
        R[2][2] = (float)Math.cos(angle);
        R[0][0] = R[3][3] = 1;

        multiply(R, v, out);
    }

In tutorial 8 (Textures) if I replace
current bitmpap (R.drawables.icon) with
a bitmap that has several parallel black&white
lines I see that texture is not perspective
projected. Is it a limitation of opengl es
or it can be fixed?

Read unsignedShort() return an Java short type.
But unsigned short can't be stored to an signed short .
Read unsignedShort() need to be return an "char" Java type.

Animation is needed for the tutorials to display the graphical animation
capabilities of the Android OpenGL ES API.

As a first task I'll add it to the Tutorial 8 as an example, and then
improve it in the future in a common base class that will call some kind of
update handler that will update the scene and then redraw the scene.

Hello,

I am not a robot, but I suppose for the purpose of this visit I might as 
well be. I just wanted to drop by real quick to check if you are at all 
familiar with the jMonkeyEngine project. It seems our projects might have a 
thing or two in common.

http://jmonkeyengine.com/blog/blog/2010/02/10/android-support-confirmed-
for-jme3/
http://www.jmonkeyengine.com/forum/index.php?topic=13176.0
http://www.jmonkeyengine.com/forum/index.php?topic=13217.0

We are on the lookout for an Android developer to help us bring jME3's 
preliminary Android implementation to a mature, fully functional state.

http://docs.google.com/View?id=dhkt6vsf_251c54bg9hp

Maybe you could be that developer? or, maybe you know someone who might be. 
Naturally we'd also appreciate having more testers or plain Android-savvy 
people around in our community. Any reason at all for you to contact us, 
feel free! Contact information can be found in the docs link above.

Thanks for your time,

~ Erlend Sogge Heggen

When I first down loaded ModelRender 0.2 the animation we very jerky.  I
found that the problem was it was interpolating.

Here was my fix.  Let me know what you think.

The method readInt :

        public int readInt() 
        throws IOException
        {
                int b1 = is.read();
                int b2 = is.read();
                int b3 = is.read();
                int b4 = is.read();

                return (b4 << 24) 
                + ((b3 << 24) >>> 8) 
                + ((b2 << 24) >>> 16) 
                + ((b1 << 24) >>> 24);
        }

can be replace by :


    public int readInt() throws IOException {
    return this.readInt();
    }

There's not ant build file for those of use who don't use the Eclipse plugin.

I attached one I made for the project, you just have the change the path to
the android SDK. 

These tutorials are great, thanks for the work. 

Brian

I'm extending your project to an app I'm building for the univ. and I'm
having a lot of trouble adding buttons and other views before or after the
main program. I'd really appreciate a bit of help

thanks
Guy

What steps will reproduce the problem?
1.  Import the projects into Eclipse
2.
3.

What is the expected output? What do you see instead?

Projects don't build.  The path to the android jar has to be fixed.

What version of the product are you using? On what operating system?

Ubuntu 9.04, Eclipse 3.4.1, Android 1.0, 1.5, 1.6, 2.0

Please provide any additional information below.

Android has come a long way particularly with its OpenGL ES support. 
Namespaces have changed so alot of refactoring has to happen in order for
these projects to work on more recent Android versions.

The .classpath file specifies a really old version of Android (m3) and
hardcoded to the user direc

/Users/bburns/Desktop/android_sdk_darwin_m3-rc22a/android.jar

What steps will reproduce the problem?
1. Download the sample.
2. Create a new project from source.
3. Experience problems.

What is the expected output? What do you see instead?
A sample should work..  If it's meant to demonstrate, then it ought to at 
least do that.

What version of the product are you using? On what operating system?
?  Does that really matter?  I followed your directions on the web..

Please provide any additional information below.

dan - [email protected]

 Did you have a version of this tutorial wich work with the new SDK M5

Thank you for your job

K. Haeffner

Many time on class LittleEndianInputStream we can show this check :

int b1 = is.read();
if (b1 < 0)
   b1 += 256;

But java.io.InputStream.read() return an int between 0 to 255 !

byte b = (byte) is.read(); => return an byte between  -127 .. 128

  BUT

int b = is.read(); => return an byte between  0 .. 256

Hi.

edu.union.GLTutorialBase_r28
at line 333:
Thread.sleep(System.currentTimeMillis()-time);


I think that this is a correct code. 

Thread.sleep(delta - (System.currentTimeMillis() - time));

I successfully built the project on Eclipse 3.5(Android 1.6 and later)  by the 
following steps. 

1. Export from SVN.

2. Copy "default.properties" file from other Android Project.

3. Delete R.java from "/src/edu/union/" directory.

4. Edit the "/res/layout/main.xml" file from <TextView id="@+id/text" to 
<TextView android:id="@+id/text".

5. Import the projects into Eclipse. 

6. Build and the error "android requires .class compatibility set to 5.0" 
occurred.
   In that case, see and fix your project here https://groups.google.com/group/android-developers/browse_thread/thread/9580edf1ed579e4c?hl=ja .

7. Try building again and it should work successfully.

I attach the succeeded project.