Android Open Source - EveShipView My G L Surface View

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Back to project page EveShipView.

License

The source code is released under:

MIT License

Java Source Code

package com.niothiel.eveshipview;
// ww  w . j a  v  a 2s  . co m
import android.content.Context;
import android.opengl.GLSurfaceView;
import android.util.Log;
import android.view.MotionEvent;

public class MyGLSurfaceView extends GLSurfaceView {
  private MyRenderer mRenderer;
  private float mPreviousX;
  private float mPreviousY;
  
  private final float TOUCH_SCALE_FACTOR = 180.0f / 800;
  
  public MyGLSurfaceView(Context context) {
    super(context);
    mRenderer = new MyRenderer(context);
    
    setEGLContextClientVersion(2);
    setRenderer(mRenderer);
  }
  
  @Override
  public boolean onTouchEvent(MotionEvent e) {
      // MotionEvent reports input details from the touch screen
      // and other input controls. In this case, you are only
      // interested in events where the touch position changed.

      float x = e.getX();
      float y = e.getY();

      switch (e.getAction()) {
          case MotionEvent.ACTION_MOVE:

              float dx = x - mPreviousX;
              float dy = y - mPreviousY;

              // reverse direction of rotation above the mid-line
              if (y > getHeight() / 2) {
                dx = dx * -1 ;
              }

              // reverse direction of rotation to left of the mid-line
              if (x < getWidth() / 2) {
                dy = dy * -1 ;
              }

              mRenderer.mAngleYaw += dx * TOUCH_SCALE_FACTOR;  // = 180.0f / 320
              mRenderer.mAnglePitch += dy * TOUCH_SCALE_FACTOR;
              requestRender();
      }

      mPreviousX = x;
      mPreviousY = y;
      return true;
  }
}

Java Source Code List

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