Load 3d Object in android

This example will show how you can use 3DObject model to your android application using the Rajawali library. You can move objects using the user touch.

3D Modeling:-

In 3D computer graphics, 3D modeling (or three-dimensional modeling) is the process of developing a mathematical representation of any three-dimensional surface of an object (either inanimate or living) via specialized software. The product is called a 3D model. 

 

Steps:-

1) Add the Gradle to your project:-

        compile 'org.rajawali3d:rajawali:1.0.325@aar'

2) Download any object file and copy that in your raw folder.

3) Create a rendering class and use that class to make 3DObject.

Note:- You can download 3DObject file from below link.

           
           Source : http://tf3dm.com/ 

1) Create activity_main.java.

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:gravity="center"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.demoimage360view.MainActivity">

    <ImageView

        android:id="@+id/iv_imageView"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:scaleType="fitXY"/>

   

</RelativeLayout>

2 Create MainActivity.java.

public class MainActivity extends AppCompatActivity {

    ImageView imageView360;

    Renderer renderer;

    int angle = 10;

    private int mStartX, mStartY, mEndX, mEndY, mImageIndex = 0;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        imageView360 = (ImageView) findViewById(R.id.iv_imageView);

        final RajawaliSurfaceView surface = new RajawaliSurfaceView(this);

        surface.setFrameRate(60.0);

        surface.setRenderMode(IRajawaliSurface.RENDERMODE_WHEN_DIRTY);

        // Add mSurface to your root view

        addContentView(surface, new ActionBar.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT));

        renderer = new Renderer(this);

        surface.setSurfaceRenderer(renderer);

    }

    @Override

    public boolean onTouchEvent(MotionEvent event) {

        int action = event.getAction();

        switch (action) {

            case (MotionEvent.ACTION_DOWN):

                mStartX = (int) event.getX();

                mStartY = (int) event.getY();

                return true;

            case (MotionEvent.ACTION_MOVE):

                mEndX = (int) event.getX();

                mEndY = (int) event.getY();

                if ((mEndX - mStartX) > 3) {

                    angle = angle + 10;

                    if (mImageIndex > 100)

                        mImageIndex = 0;

                    imageView360.setImageLevel(mImageIndex);

                    Log.i("Level", mImageIndex + "");

                    renderer.getObject().rotate(Vector3.Axis.Y, -1.0);

                }

                if ((mEndX - mStartX) < -3) {

                    angle = angle - 10;

                    if (mImageIndex < 0)

                        mImageIndex = 10;

                    renderer.getObject().rotate(Vector3.Axis.Y, 1.0);

                }

                mStartX = (int) event.getX();

                mStartY = (int) event.getY();

                return true;

            case (MotionEvent.ACTION_UP):

                mEndX = (int) event.getX();

                mEndY = (int) event.getY();

                return true;

            case (MotionEvent.ACTION_CANCEL):

                return true;

            case (MotionEvent.ACTION_OUTSIDE):

                return true;

            default:

                return super.onTouchEvent(event);

        }

    }

}

3) Create Renderer.java.

package com.demoimage360view;

import android.content.Context;

import android.view.MotionEvent;

import org.rajawali3d.Object3D;

import org.rajawali3d.lights.DirectionalLight;

import org.rajawali3d.loader.LoaderOBJ;

import org.rajawali3d.loader.ParsingException;

import org.rajawali3d.math.vector.Vector3;

import org.rajawali3d.renderer.RajawaliRenderer;

import javax.microedition.khronos.opengles.GL10;

public class Renderer extends RajawaliRenderer {

    private DirectionalLight directionalLight;

    private Object3D earthSphere;

    LoaderOBJ objParser ;

    public Renderer(Context context) {

        super(context);

        setFrameRate(60);

    }

    public void onTouchEvent(MotionEvent event){

    }

    public void onOffsetsChanged(float x, float y, float z, float w, int i, int j){

    }

    @Override

    protected void initScene() {

        directionalLight = new DirectionalLight(1f, .2f, -1.0f);

        directionalLight.setColor(1.0f, 1.0f, 1.0f);

        directionalLight.setPower(2);

        getCurrentScene().addLight(directionalLight);

        //your object file name instead of R.raw.***;

        objParser = new LoaderOBJ(mContext.getResources(),mTextureManager, R.raw.finalbasemesh);

        try {

            objParser.parse();

            earthSphere = objParser.getParsedObject();

            earthSphere.setX(0);

            earthSphere.setY(-1);

            earthSphere.setZ(0);

            earthSphere.setScale(0.1f);    //change as per you object height to fit in screen

            earthSphere.setDoubleSided(true);

            getCurrentScene().addChild(earthSphere);

        } catch (ParsingException e) {

            e.printStackTrace();

        }

    }

    @Override

    protected void onRender(long ellapsedRealtime, double deltaTime) {

        super.onRender(ellapsedRealtime, deltaTime);

    }

    @Override

    public void onRenderFrame(GL10 gl) {

        super.onRenderFrame(gl);

    }

    public Object3D getObject(){

        return earthSphere;

    }

}

Output

         

                       Model Source : http://tf3dm.com/

Note:- You can move objects automatically. For that, you need to add below line in renderer.java

         @Override

           protected void onRender(long ellapsedRealtime, double deltaTime) {

               super.onRender(ellapsedRealtime, deltaTime);

                 earthSphere.rotate(Vector3.Axis.Y, 1.0);

    }