Thanks for introducing NPOT-Textures. I am glad to have that option in Android. it is useful for my work.

Ok, about my main question, thanks to "Hello World" program Now I am able to load my own .obj and its texture. I can rotate my Model too. I use these codes for that purpose:

world.renderScene(buffer);
world.draw(buffer);
buffer.update();

Now I want to go to next step: RenderTarget
but I have a question before coding; when you say "In the end, you have two scenes of two different models rendered into two different textures", what Should I do in order to join those two scenes so they create a side-by-side look?
I assume that the key action for joining two scenes is inside the blit function parameters, right?

Hey friends,

I am a new user of JPCT. I had a topic some month later:
http://www.jpct.net/forum2/index.php/topic,4379.msg30466.html#msg30466

in that topic, I was going to develop a "side-by-side 3D model viewer". (please see the attached image); two models should be placed side-by-side and I want those similar models rotate simultaneously around their axis As I drag the mouse to left or right.

Now I need to know how to start. I have developed a simple 3d model viewer thanks to JPCT and helps of Dear EgonOlsen.

But I do not have enough knowledge to continue the project. for example based on the recommendation of EgonOlsen I tried to understand blitting (topic mentioned above), but I couldn"t understand what does that function really do and what's the relation to side by side viewing the models!!:(

Please help me.
thanks.

Thanks for code snippet explaining rotation of objects using mouse events.
my specific questions are:
#1 - when creating a world and then a camera, what is the default position of camera in the world?
#2 - when loading an .obj mesh, does jPCT place the model in its default position which was used while creating the model? (whilst designing the model, it could have a desired distance from 0,0,0)
#3 - why do we have to use third line in the below code?

        Camera cam=world.getCamera();
        cam.moveCamera(Camera.CAMERA_MOVEUP, distance);
 -->  cam.rotateCameraX((float)Math.PI/2f);

================code for roatting object using mouse========
import com.threed.jpct.*;
import com.threed.jpct.util.*;
import org.lwjgl.opengl.*;
import org.lwjgl.input.*;

/**
 * A Simple demo for mouse-powered object viewing.
 * It offers two modes: Camera around object (default) and object "around" camera.
 */
public class GoogleCube {

    private static float distance=50;

    // If true, the object transforms related to the camera. If false, the camera to the object.
    private static boolean affectObject=false;

    public static void main(String[] args) throws Exception {
        World world=new World();
        FrameBuffer buffer=new FrameBuffer(640, 480, FrameBuffer.SAMPLINGMODE_HARDWARE_ONLY);
        buffer.disableRenderer(IRenderer.RENDERER_SOFTWARE);
        buffer.enableRenderer(IRenderer.RENDERER_OPENGL);
        Object3D cube=Primitives.getSphere(15);
        world.addObject(cube);
        cube.build();
        Camera cam=world.getCamera();
        cam.moveCamera(Camera.CAMERA_MOVEUP, distance);
        cam.rotateCameraX((float)Math.PI/2f);
        world.setAmbientLight(100, 100, 100);
        Light light=new Light(world);
        light.setIntensity(0, 0, 255);
        light.setPosition(new SimpleVector(-100, 0, 0));

        Mouse.create();

        while (!Display.isCloseRequested() && !Mouse.isButtonDown(1)) {
            buffer.clear();
            world.renderScene(buffer);
            world.draw(buffer);
            buffer.update();
            buffer.displayGLOnly();

            int x=Mouse.getDX();
            int y=Mouse.getDY();
            int w=Mouse.getDWheel();

            if (Mouse.isButtonDown(0)) {
                SimpleVector line=new SimpleVector(x, 0, y);
                Matrix m=line.normalize().getRotationMatrix();
                if (affectObject) {
                    // Object "around" camera
                    cube.rotateAxis(m.getXAxis(), line.length() / 200f);
                } else {
                    // Camera around object
                    m.rotateAxis(m.getXAxis(), (float) -Math.PI/2f);
                    cam.moveCamera(Camera.CAMERA_MOVEIN, distance);
                    cam.rotateAxis(m.invert3x3().getXAxis(), line.length() / 200f);
                    cam.moveCamera(Camera.CAMERA_MOVEOUT, distance);
                }
            }
            if (w!=0) {
               float d=w/200f;
                if (affectObject) {
                    cube.translate(0, -d, 0);
                } else {
                    distance-=d;
                    cam.moveCamera(Camera.CAMERA_MOVEIN, d);
                }
            }

            Thread.sleep(10);
        }
        Mouse.setGrabbed(false);
        Mouse.destroy();

        buffer.disableRenderer(IRenderer.RENDERER_OPENGL);
        buffer.dispose();
    }
}
==========================================

yes, both models are different meshes. very similar to each other but with some differences.
I think I understand your third and best solution for dual view. (blit method)
maybe there is another method that I am not sure about that. when we rotate an object in 3D space, I think we are usually rotating the camera rather than the object itself. what about rotating the object in this case?
I don't know if JPCT supports conditions described below:
- using one world.
- loading two meshes and their textures and placing them with a predefined distance between them.
- creating two cameras each one looking at one of the meshes.
- rotating the meshes around their own central axis as user drags the mouse or touches his finger.
- having output of two view-ports each one coming from each camera.
- placing the outputs side by side in realtime

what is your idea about this flowchart? does JPCT have such abilities or I am far away from available methods?

Best,
Reza

Hi guys,

in the first steps of coding a Java program which uses JPCT, I encounter this error, could you help me please?
machine: Laptop Sony VAIO VGN-FW 190
Display Adapter: Mobile Intel(R) 45 Express Chipset family (Microsoft Corporation WDDM 1.1)
my graphics drivers are up to date.
I am waiting for help of one of JPCT forum users and maybe changing the current IDE from Netbeans to Eclipse. but I do not think this error depends on the current IDE I am using.
============
run:
Loading Texture...box.jpg
[ Thu May 14 13:59:44 IRDT 2015 ] - ERROR: File 'box.jpg' not found - replacement texture used instead!
Java version is: 1.8.0_25
-> support for BufferedImage
Version helper for 1.5+ initialized!
-> using BufferedImage
Software renderer (OpenGL mode) initialized
Software renderer disposed
Current mode:800 x 600 x 32 @59Hz
[ Thu May 14 13:59:44 IRDT 2015 ] - WARNING: ZBuffer depth of 24 not supported - trying something else now...!
[ Thu May 14 13:59:44 IRDT 2015 ] - WARNING: Does this machine actually support OpenGL? Trying everything at lowest settings now!
Driver is unknown!
[ Thu May 14 13:59:44 IRDT 2015 ] - ERROR: Unable to set any valid videomode on this machine!
[ Thu May 14 13:59:44 IRDT 2015 ] - ERROR: Can't set videomode - try different settings!
org.lwjgl.LWJGLException: Pixel format not accelerated
   at org.lwjgl.opengl.WindowsPeerInfo.nChoosePixelFormat(Native Method)
   at org.lwjgl.opengl.WindowsPeerInfo.choosePixelFormat(WindowsPeerInfo.java:52)
   at org.lwjgl.opengl.WindowsDisplay.createWindow(WindowsDisplay.java:247)
   at org.lwjgl.opengl.Display.createWindow(Display.java:306)
   at org.lwjgl.opengl.Display.create(Display.java:848)
   at org.lwjgl.opengl.Display.create(Display.java:757)
   at com.threed.jpct.GLHelper.init(GLHelper.java:208)
   at com.threed.jpct.GLRenderer.init(GLRenderer.java:24)
   at com.threed.jpct.FrameBuffer.enableRenderer(FrameBuffer.java:1134)
   at com.threed.jpct.FrameBuffer.enableRenderer(FrameBuffer.java:753)
   at com.threed.jpct.FrameBuffer.enableRenderer(FrameBuffer.java:700)
   at Reza.main(Reza.java:29)
BUILD SUCCESSFUL (total time: 5 seconds)

Dear EgonOlsen,

You are right, what I asked was JAVA basics and I started learning JAVA right now. I will learn the JAVA basics and then I will come back here for question about JPCT. now my specific questions are:

- Please see attached picture. I want to have a program like the attached picture at the end. it is a side by side model viewer. when I rotate the space I want two models rotate simultaneously and harmonically. in other meaning, I want to have two models loaded side-by-side with the same zoom and rotational reactions to the mouse events. Can I develop and create this type of viewer at the end using JPCT? am I in the right place at all?
- I understand that I should use eclipse IDE for JAVA development. Is eclipse IDE a proper tool for my goal described above? Am I going the right way at all?

Many thanks for your help.
Best regards,
Reza