Android Open Source - PsychoFlute Main Activity

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From Project

Back to project page PsychoFlute.

License

The source code is released under:

GNU General Public License

Java Source Code

package la.noise.psychoflute;
/* w w w .  j a  v a  2s. com*/
import java.io.File;
import java.util.Random;

import com.magickhack.psychoflute.R;

import android.graphics.Color;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import com.csounds.CsoundObj;
import com.csounds.CsoundObjCompletionListener;
import com.csounds.valueCacheable.CsoundValueCacheable;
import csnd6.CsoundMYFLTArray;
import csnd6.controlChannelType;


public class MainActivity extends BaseCsoundActivity implements
CsoundObjCompletionListener, CsoundValueCacheable {
  
  public View multiTouchView;
  
  int touchIds[] = new int[4];
  float touchX[] = new float[4];
  float touchY[] = new float[4];
  CsoundMYFLTArray touchXPtr[] = new CsoundMYFLTArray[4];
  CsoundMYFLTArray touchYPtr[] = new CsoundMYFLTArray[4];

  protected int getTouchIdAssignment() {
    for(int i = 0; i < touchIds.length; i++) {
      if(touchIds[i] == -1) {
        return i;
      }
    }
    return -1;
  }
  
  protected int getTouchId(int touchId) {
    for(int i = 0; i < touchIds.length; i++) {
      if(touchIds[i] == touchId) {
        return i;
      }
    }
    return -1;
  }
  
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    getWindow().setBackgroundDrawableResource(R.drawable.ic_pentagram);
    csoundObj.enableAccelerometer(MainActivity.this);
    
    for(int i = 0; i < touchIds.length; i++) {
      touchIds[i] = -1;
      touchX[i] = -1;
      touchY[i] = -1;
    }
    
    multiTouchView = new View(this);
    
    multiTouchView.setOnTouchListener(new OnTouchListener() {

      public boolean onTouch(View v, MotionEvent event) {
        Random rnd = new Random(); 
        int color = Color.argb(255, rnd.nextInt(256), rnd.nextInt(256), rnd.nextInt(256));  
        
        final int action = event.getAction() & MotionEvent.ACTION_MASK;
        switch(action) {
        case MotionEvent.ACTION_DOWN:
        case MotionEvent.ACTION_POINTER_DOWN:
          
          for(int i = 0; i < event.getPointerCount(); i++) {
            int pointerId = event.getPointerId(i);
            int id = getTouchId(pointerId);
            
            if(id == -1) {
              
              id = getTouchIdAssignment();
              
              if(id != -1) {
                touchIds[id] = pointerId;
                touchX[id] = event.getX(i) / multiTouchView.getWidth();
                touchY[id] = 1 - (event.getY(i) / multiTouchView.getHeight());
                
                if(touchXPtr[id] != null) {
                  touchXPtr[id].SetValue(0, touchX[id]);
                  touchYPtr[id].SetValue(0, touchY[id]);
                  
                  csoundObj.sendScore(String.format("i1.%d 0 -2 %d", id, id));
                  multiTouchView.setBackgroundColor((int) (id + id + color));
                }
              }
            }
            
          }
          
          break;
        case MotionEvent.ACTION_MOVE:

          for(int i = 0; i < event.getPointerCount(); i++) {
            int pointerId = event.getPointerId(i);
            int id = getTouchId(pointerId);

            if(id != -1) {
              touchX[id] = event.getX(i) / multiTouchView.getWidth();
              touchY[id] = 1 - (event.getY(i) / multiTouchView.getHeight());
            }
            
          }
          break;
        case MotionEvent.ACTION_POINTER_UP:
        case MotionEvent.ACTION_UP:
        {
          int activePointerIndex = event.getActionIndex();
          int pointerId = event.getPointerId(activePointerIndex);
            
          int id = getTouchId(pointerId);
          if(id != -1) {
            touchIds[id] = -1;
            csoundObj.sendScore(String.format("i-1.%d 0 0 %d", id, id));
            multiTouchView.setBackgroundColor((int) (id + id + color));
          }
          
        }
          break;
        }
        
        multiTouchView.setBackgroundColor(color);
        return true;
      }
    });
    
    setContentView(multiTouchView);

    String csd = getResourceFileAsString(R.raw.multitouch_xy);
    File f = createTempFile(csd);

    csoundObj.addValueCacheable(this);

    csoundObj.startCsound(f);
  }

  public void csoundObjComplete(CsoundObj csoundObj) {}
  
  // VALUE CACHEABLE

  public void setup(CsoundObj csoundObj) {
    for(int i = 0; i < touchIds.length; i++) {
      touchXPtr[i] = csoundObj.getInputChannelPtr(
          String.format("touch.%d.x", i),
          controlChannelType.CSOUND_CONTROL_CHANNEL);
      touchYPtr[i] = csoundObj.getInputChannelPtr(
          String.format("touch.%d.y", i),
          controlChannelType.CSOUND_CONTROL_CHANNEL);
    }
  }

  public void updateValuesToCsound() {
    for(int i = 0; i < touchX.length; i++) {
      touchXPtr[i].SetValue(0, touchX[i]);
      touchYPtr[i].SetValue(0, touchY[i]);
    }
    
  }

  public void updateValuesFromCsound() {}

  public void cleanup() {
    for(int i = 0; i < touchIds.length; i++) {
      touchXPtr[i].Clear();
      touchXPtr[i] = null;
      touchYPtr[i].Clear();
      touchYPtr[i] = null;
    }
  }
}

Java Source Code List

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