LoadModel jPCT-AE.

[J2EEGuy]

Hello to all here. I'm new to jPCT. I have thus far successfully ran the hello world with the rotating box and I have figured out how to move the camera plus how to move the primitive objects that come with the program. I am trying to take the next step by loading a .3ds file into my project. By setting up the load-model method with a file-stream linked to my .3ds file my program always crashes. Is there a simple way on jPCT-AE to load a 3d model into the world?

[EgonOlsen]

Most likely it can't find/access your file or it's not a valid 3ds file. Posting the actual exception from the log should help.

[J2EEGuy]

fd

[EgonOlsen]

Please warp source code in code-Tags (the # icon when editing the post). Apart from that...is the screen really black? Or is it blue? You are actually clearing with a kind of blue, so if the object is not visible (because it's way off or you are standing inside it), you should get the clear color. If it's really black, something else might be wrong. If it's not black, try to change the scaling of the cube or move the camera further away. If it's really black (as in 0,0,0), please post the log output (again, wrapped in code tags).

[J2EEGuy]

Code Select Expand

package com.threed.jpct.example;

import java.io.*;

import java.lang.reflect.Field;
import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLDisplay;
import javax.microedition.khronos.opengles.GL10;

import com.threed.jpct.*;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.view.MotionEvent;
import android.content.res.AssetManager;
import android.content.res.Resources;
import android.opengl.GLSurfaceView.EGLConfigChooser;
import android.opengl.GLSurfaceView.Renderer;
import android.util.Log;

public class HelloWorld extends Activity {
    private String thingName = (":Raw/box");
    private int thingScale = 1;//end
private static HelloWorld master = null;

private GLSurfaceView mGLView;
private MyRenderer renderer = null;
private FrameBuffer buffer = null;

private World world = null;
private RGBColor back = new RGBColor(50, 50, 100);

private float touchTurn = 0;
private float touchTurnUp = 0;

private float xpos = -1;
private float ypos = -1;

private Object3D thing = null;
private int fps = 0;

private Light sun = null;
private Camera cam = null;

AssetManager assMan;
InputStream is;
@SuppressLint("NewApi")
protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);
mGLView = new GLSurfaceView(getApplication());
renderer = new MyRenderer();
mGLView.setRenderer(renderer);
setContentView(mGLView);
}

@SuppressLint("NewApi")
@Override
protected void onPause() {
super.onPause();
mGLView.onPause();
}

@SuppressLint("NewApi")
@Override
protected void onResume() {
super.onResume();
mGLView.onResume();
}

protected void onStop() {
super.onStop();
}

public boolean onTouchEvent(MotionEvent me) {

if (me.getAction() == MotionEvent.ACTION_DOWN) {
xpos = me.getX();
ypos = me.getY();
return true;
}

if (me.getAction() == MotionEvent.ACTION_UP) {
xpos = -1;
ypos = -1;
touchTurn = 0;
touchTurnUp = 0;
return true;
}

if (me.getAction() == MotionEvent.ACTION_MOVE) {
float xd = me.getX() - xpos;
float yd = me.getY() - ypos;

xpos = me.getX();
ypos = me.getY();

touchTurn = xd / -100f;
touchTurnUp = yd / -100f;
return true;
}

try {
Thread.sleep(15);
} catch (Exception e) {
// No need for this...
}

return super.onTouchEvent(me);
}

protected boolean isFullscreenOpaque() {
return true;
}

class MyRenderer implements GLSurfaceView.Renderer {

private long time = System.currentTimeMillis();
private boolean stop = false;

public MyRenderer() {
}

public void stop() {
stop = true;
}

public void onSurfaceChanged(GL10 gl, int w, int h) {
if (buffer != null) {
buffer.dispose();
}
buffer = new FrameBuffer(gl, w, h);

if (master == null) {

world = new World();
        world.setAmbientLight(150, 150, 150);

sun = new Light(world);
sun.setIntensity(250, 250, 250);

thing = loadModel(thingName, thingScale);
        thing.build();

world.addObject(thing);

cam = world.getCamera();
cam.moveCamera(Camera.CAMERA_MOVEOUT, 100);
cam.lookAt(thing.getTransformedCenter());

SimpleVector sv = new SimpleVector();
sv.set(thing.getTransformedCenter());
sv.y -= 100;
sv.z -= 100;
sun.setPosition(sv);
//MemoryHelper.compact();

if (master == null) {
Logger.log("Saving master Activity!");
master = HelloWorld.this;
}
}
}

public void onSurfaceCreated(GL10 gl, EGLConfig config) {
}

public void onDrawFrame(GL10 gl) {

try {
if (!stop) {
if (touchTurn != 0) {
thing.rotateY(touchTurn);
touchTurn = 0;
}

if (touchTurnUp != 0) {
thing.rotateX(touchTurnUp);
touchTurnUp = 0;
}

buffer.clear(back);
world.renderScene(buffer);
world.draw(buffer);
buffer.display();

if (System.currentTimeMillis() - time >= 1000) {
Logger.log(fps + "fps");
fps = 0;
time = System.currentTimeMillis();
}
fps++;
} else {
if (buffer != null) {
buffer.dispose();
buffer = null;
}
}
} catch (Exception e) {
Logger.log(e, Logger.MESSAGE);
}
}
public InputStream OMGSHIT(){
try {
        InputStream isl = new FileInputStream(thingName);

        //is.close();
    } catch (FileNotFoundException e) {
        System.exit(0);
        e.printStackTrace();
    } catch (IOException e) {
   
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
return is;

}
    private Object3D loadModel(String filename, float scale) {
assMan = getResources().getAssets();
is= new InputStream() {

@Override
public int read() throws IOException {
return 0;
}
};
        Object3D[] model = Loader.load3DS(OMGSHIT(),scale);
        Object3D o3d = new Object3D(0);
        Object3D temp = null;
        for (int i = 0; i < model.length; i++) {
            temp = model[i];
            temp.setCenter(SimpleVector.ORIGIN);
            temp.rotateX((float)( -.5*Math.PI));
            temp.rotateMesh();
            temp.setRotationMatrix(new Matrix());
            o3d = Object3D.mergeObjects(o3d, temp);
            o3d.build();
        }
        return o3d;
    }
}
}



This is where I am at. I put a try/catch on the fileinputstream that feeds into loader3ds. Ive tried every patch/filename i could think of but it always returns filenotfound.

[J2EEGuy]

Code Select Expand

package com.threed.jpct.example;

import java.io.*;

import java.lang.reflect.Field;
import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLDisplay;
import javax.microedition.khronos.opengles.GL10;

import com.threed.jpct.*;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.view.MotionEvent;
import android.content.res.AssetManager;
import android.content.res.Resources;
import android.opengl.GLSurfaceView.EGLConfigChooser;
import android.opengl.GLSurfaceView.Renderer;
import android.util.Log;

public class HelloWorld extends Activity {
    private String thingName = ("res/box.3ds");
    private int thingScale = 1;//end
private static HelloWorld master = null;

private GLSurfaceView mGLView;
private MyRenderer renderer = null;
private FrameBuffer buffer = null;

private World world = null;
private RGBColor back = new RGBColor(50, 50, 100);

private float touchTurn = 0;
private float touchTurnUp = 0;

private float xpos = -1;
private float ypos = -1;

private Object3D thing = null;
private int fps = 0;

private Light sun = null;
private Camera cam = null;

AssetManager assMan;
InputStream is;
@SuppressLint("NewApi")
protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);
mGLView = new GLSurfaceView(getApplication());
renderer = new MyRenderer();
mGLView.setRenderer(renderer);
setContentView(mGLView);
}

@SuppressLint("NewApi")
@Override
protected void onPause() {
super.onPause();
mGLView.onPause();
}

@SuppressLint("NewApi")
@Override
protected void onResume() {
super.onResume();
mGLView.onResume();
}

protected void onStop() {
super.onStop();
}

public boolean onTouchEvent(MotionEvent me) {

if (me.getAction() == MotionEvent.ACTION_DOWN) {
xpos = me.getX();
ypos = me.getY();
return true;
}

if (me.getAction() == MotionEvent.ACTION_UP) {
xpos = -1;
ypos = -1;
touchTurn = 0;
touchTurnUp = 0;
return true;
}

if (me.getAction() == MotionEvent.ACTION_MOVE) {
float xd = me.getX() - xpos;
float yd = me.getY() - ypos;

xpos = me.getX();
ypos = me.getY();

touchTurn = xd / -100f;
touchTurnUp = yd / -100f;
return true;
}

try {
Thread.sleep(15);
} catch (Exception e) {
// No need for this...
}

return super.onTouchEvent(me);
}

protected boolean isFullscreenOpaque() {
return true;
}

class MyRenderer implements GLSurfaceView.Renderer {

private long time = System.currentTimeMillis();
private boolean stop = false;

public MyRenderer() {
}

public void stop() {
stop = true;
}

public void onSurfaceChanged(GL10 gl, int w, int h) {
if (buffer != null) {
buffer.dispose();
}
buffer = new FrameBuffer(gl, w, h);

if (master == null) {

world = new World();
        world.setAmbientLight(150, 150, 150);

sun = new Light(world);
sun.setIntensity(250, 250, 250);

try {
thing = loadModel(thingName, thingScale);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
        thing.build();

world.addObject(thing);

cam = world.getCamera();
cam.moveCamera(Camera.CAMERA_MOVEOUT, 100);
cam.lookAt(thing.getTransformedCenter());

SimpleVector sv = new SimpleVector();
sv.set(thing.getTransformedCenter());
sv.y -= 100;
sv.z -= 100;
sun.setPosition(sv);
//MemoryHelper.compact();

if (master == null) {
Logger.log("Saving master Activity!");
master = HelloWorld.this;
}
}
}

public void onSurfaceCreated(GL10 gl, EGLConfig config) {
}

public void onDrawFrame(GL10 gl) {

try {
if (!stop) {
if (touchTurn != 0) {
thing.rotateY(touchTurn);
touchTurn = 0;
}

if (touchTurnUp != 0) {
thing.rotateX(touchTurnUp);
touchTurnUp = 0;
}

buffer.clear(back);
world.renderScene(buffer);
world.draw(buffer);
buffer.display();

if (System.currentTimeMillis() - time >= 1000) {
Logger.log(fps + "fps");
fps = 0;
time = System.currentTimeMillis();
}
fps++;
} else {
if (buffer != null) {
buffer.dispose();
buffer = null;
}
}
} catch (Exception e) {
Logger.log(e, Logger.MESSAGE);
}
}

    private Object3D loadModel(String filename, float scale) throws FileNotFoundException {
    InputStream is = getResources().openRawResource(R.raw.box);

        Object3D[] model = Loader.load3DS(is,scale);
        Object3D o3d = new Object3D(0);
        Object3D temp = null;
        for (int i = 0; i < model.length; i++) {
            temp = model[i];
            temp.setCenter(SimpleVector.ORIGIN);
            temp.rotateX((float)( -.5*Math.PI));
            temp.rotateMesh();
            temp.setRotationMatrix(new Matrix());
            o3d = Object3D.mergeObjects(o3d, temp);
            o3d.build();
        }
        return o3d;
    }
}
}

Never mind i was able to get it lol. Thank you so much for actually replying to the post. The code above successfully loads a .3DS file into android