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GNU General Public License
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package edu.dhbw.andobjviewer; /*ww w . j av a 2 s . c o m*/ import android.app.ProgressDialog; import android.content.Intent; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.Bitmap.CompressFormat; import android.os.AsyncTask; import android.os.Bundle; import android.os.Debug; import android.view.Menu; import android.view.MenuItem; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.View; import android.view.View.OnTouchListener; import android.widget.Toast; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.net.URI; import java.util.Date; import edu.dhbw.andar.ARToolkit; import edu.dhbw.andar.AndARActivity; import edu.dhbw.andar.exceptions.AndARException; import edu.dhbw.andarmodelviewer.R; import edu.dhbw.andobjviewer.graphics.LightingRenderer; import edu.dhbw.andobjviewer.graphics.Model3D; import edu.dhbw.andobjviewer.models.Model; import edu.dhbw.andobjviewer.parser.ObjParser; import edu.dhbw.andobjviewer.parser.ParseException; import edu.dhbw.andobjviewer.parser.Util; import edu.dhbw.andobjviewer.util.AssetsFileUtil; import edu.dhbw.andobjviewer.util.BaseFileUtil; import edu.dhbw.andobjviewer.util.SDCardFileUtil; /** * Example of an application that makes use of the AndAR toolkit. * @author Tobi * */ public class AugmentedModelViewerActivity extends AndARActivity implements SurfaceHolder.Callback { /** * View a file in the assets folder */ public static final int TYPE_INTERNAL = 0; /** * View a file on the sd card. */ public static final int TYPE_EXTERNAL = 1; public static final boolean DEBUG = false; /* Menu Options: */ private final int MENU_SCALE = 0; private final int MENU_ROTATE = 1; private final int MENU_TRANSLATE = 2; private final int MENU_SCREENSHOT = 3; private int mode = MENU_SCALE; private Model model; private Model3D model3d; private ProgressDialog waitDialog; private Resources res; ARToolkit artoolkit; public AugmentedModelViewerActivity() { super(false); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); super.setNonARRenderer(new LightingRenderer());//or might be omited res=getResources(); artoolkit = getArtoolkit(); getSurfaceView().setOnTouchListener(new TouchEventHandler()); getSurfaceView().getHolder().addCallback(this); } /** * Inform the user about exceptions that occurred in background threads. */ @Override public void uncaughtException(Thread thread, Throwable ex) { System.out.println(""); } /* create the menu * @see android.app.Activity#onCreateOptionsMenu(android.view.Menu) */ @Override public boolean onCreateOptionsMenu(Menu menu) { menu.add(0, MENU_TRANSLATE, 0, res.getText(R.string.translate)) .setIcon(R.drawable.translate); menu.add(0, MENU_ROTATE, 0, res.getText(R.string.rotate)) .setIcon(R.drawable.rotate); menu.add(0, MENU_SCALE, 0, res.getText(R.string.scale)) .setIcon(R.drawable.scale); menu.add(0, MENU_SCREENSHOT, 0, res.getText(R.string.take_screenshot)) .setIcon(R.drawable.screenshoticon); return true; } /* Handles item selections */ public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case MENU_SCALE: mode = MENU_SCALE; return true; case MENU_ROTATE: mode = MENU_ROTATE; return true; case MENU_TRANSLATE: mode = MENU_TRANSLATE; return true; case MENU_SCREENSHOT: new TakeAsyncScreenshot().execute(); return true; } return false; } @Override public void surfaceCreated(SurfaceHolder holder) { super.surfaceCreated(holder); //load the model //this is done here, to assure the surface was already created, so that the preview can be started //after loading the model if(model == null) { waitDialog = ProgressDialog.show(this, "", getResources().getText(R.string.loading), true); waitDialog.show(); new ModelLoader().execute(); } } @Override public void onDestroy() { super.onDestroy(); ModelChooser.narrator.stop(); } /** * Handles touch events. * @author Tobias Domhan * */ class TouchEventHandler implements OnTouchListener { private float lastX=0; private float lastY=0; /* handles the touch events. * the object will either be scaled, translated or rotated, dependen on the * current user selected mode. * @see android.view.View.OnTouchListener#onTouch(android.view.View, android.view.MotionEvent) */ @Override public boolean onTouch(View v, MotionEvent event) { if(model!=null) { switch(event.getAction()) { //Action started default: case MotionEvent.ACTION_DOWN: lastX = event.getX(); lastY = event.getY(); break; //Action ongoing case MotionEvent.ACTION_MOVE: float dX = lastX - event.getX(); float dY = lastY - event.getY(); lastX = event.getX(); lastY = event.getY(); if(model != null) { switch(mode) { case MENU_SCALE: model.setScale(dY/100.0f); break; case MENU_ROTATE: model.setXrot(-1*dX);//dY-> Rotation um die X-Achse model.setYrot(-1*dY);//dX-> Rotation um die Y-Achse break; case MENU_TRANSLATE: model.setXpos(dY/10f); model.setYpos(dX/10f); break; } } break; //Action ended case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: lastX = event.getX(); lastY = event.getY(); break; } } return true; } } private class ModelLoader extends AsyncTask<Void, Void, Void> { @Override protected Void doInBackground(Void... params) { Intent intent = getIntent(); Bundle data = intent.getExtras(); int type = data.getInt("type"); String modelFileName = data.getString("name"); BaseFileUtil fileUtil= null; File modelFile=null; switch(type) { case TYPE_EXTERNAL: fileUtil = new SDCardFileUtil(); modelFile = new File(URI.create(modelFileName)); modelFileName = modelFile.getName(); fileUtil.setBaseFolder(modelFile.getParentFile().getAbsolutePath()); break; case TYPE_INTERNAL: fileUtil = new AssetsFileUtil(getResources().getAssets()); fileUtil.setBaseFolder("models/"); break; } //read the model file: if(modelFileName.endsWith(".obj")) { ObjParser parser = new ObjParser(fileUtil); try { if(Config.DEBUG) Debug.startMethodTracing("AndObjViewer"); if(type == TYPE_EXTERNAL) { //an external file might be trimmed BufferedReader modelFileReader = new BufferedReader(new FileReader(modelFile)); String shebang = modelFileReader.readLine(); if(!shebang.equals("#trimmed")) { //trim the file: File trimmedFile = new File(modelFile.getAbsolutePath()+".tmp"); BufferedWriter trimmedFileWriter = new BufferedWriter(new FileWriter(trimmedFile)); Util.trim(modelFileReader, trimmedFileWriter); if(modelFile.delete()) { trimmedFile.renameTo(modelFile); } } } if(fileUtil != null) { BufferedReader fileReader = fileUtil.getReaderFromName(modelFileName); if(fileReader != null) { model = parser.parse("Model", fileReader); model3d = new Model3D(model); } } if(Config.DEBUG) Debug.stopMethodTracing(); } catch (IOException e) { e.printStackTrace(); } catch (ParseException e) { e.printStackTrace(); } } return null; } @Override protected void onPostExecute(Void result) { super.onPostExecute(result); waitDialog.dismiss(); //register model try { if(model3d!=null) artoolkit.registerARObject(model3d); } catch (AndARException e) { e.printStackTrace(); } startPreview(); } } class TakeAsyncScreenshot extends AsyncTask<Void, Void, Void> { private String errorMsg = null; @Override protected Void doInBackground(Void... params) { Bitmap bm = takeScreenshot(); FileOutputStream fos; try { fos = new FileOutputStream("/sdcard/AndARScreenshot"+new Date().getTime()+".png"); bm.compress(CompressFormat.PNG, 100, fos); fos.flush(); fos.close(); } catch (FileNotFoundException e) { errorMsg = e.getMessage(); e.printStackTrace(); } catch (IOException e) { errorMsg = e.getMessage(); e.printStackTrace(); } return null; } protected void onPostExecute(Void result) { if(errorMsg == null) Toast.makeText(AugmentedModelViewerActivity.this, getResources().getText(R.string.screenshotsaved), Toast.LENGTH_SHORT ).show(); else Toast.makeText(AugmentedModelViewerActivity.this, getResources().getText(R.string.screenshotfailed)+errorMsg, Toast.LENGTH_SHORT ).show(); }; } }