Revision 0dc8ffef
Added by Leszek Koltunski almost 4 years ago
| src/main/java/org/distorted/examples/predeform/PredeformSurfaceView.java | ||
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import android.content.pm.ConfigurationInfo; |
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import android.opengl.GLSurfaceView; |
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import android.util.AttributeSet; |
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import android.view.MotionEvent; |
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import android.widget.Toast; |
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import org.distorted.examples.R; |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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class PredeformSurfaceView extends GLSurfaceView |
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{
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private final static int DIRECTION_SENSITIVITY= 12; |
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private int mX, mY; |
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private PredeformRenderer mRenderer; |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
| ... | ... | |
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{
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super(context,attrs); |
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mX = -1; |
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mY = -1; |
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if(!isInEditMode()) |
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{
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mRenderer = new PredeformRenderer(this); |
| ... | ... | |
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final ConfigurationInfo configurationInfo = activityManager.getDeviceConfigurationInfo(); |
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setEGLContextClientVersion( (configurationInfo.reqGlEsVersion>>16) >= 3 ? 3:2 ); |
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setRenderer(mRenderer); |
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Toast.makeText(context, R.string.example_rotate_toast , Toast.LENGTH_SHORT).show(); |
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} |
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} |
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|
| ... | ... | |
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{
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return mRenderer; |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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private void resetQuats() |
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{
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float qx = mRenderer.mQuat1.get0(); |
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float qy = mRenderer.mQuat1.get1(); |
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float qz = mRenderer.mQuat1.get2(); |
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float qw = mRenderer.mQuat1.get3(); |
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float rx = mRenderer.mQuat2.get0(); |
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float ry = mRenderer.mQuat2.get1(); |
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float rz = mRenderer.mQuat2.get2(); |
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float rw = mRenderer.mQuat2.get3(); |
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float tx = rw*qx - rz*qy + ry*qz + rx*qw; |
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float ty = rw*qy + rz*qx + ry*qw - rx*qz; |
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float tz = rw*qz + rz*qw - ry*qx + rx*qy; |
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float tw = rw*qw - rz*qz - ry*qy - rx*qx; |
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mRenderer.mQuat1.set(0f, 0f, 0f, 1f); |
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mRenderer.mQuat2.set(tx, ty, tz, tw); |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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@Override public boolean onTouchEvent(MotionEvent event) |
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{
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int action = event.getAction(); |
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int x = (int)event.getX(); |
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int y = (int)event.getY(); |
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switch(action) |
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{
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case MotionEvent.ACTION_DOWN: mX = x; |
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mY = y; |
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break; |
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case MotionEvent.ACTION_MOVE: if( mX>=0 && mY>= 0 ) |
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{
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float px = mY-y; |
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float py = mX-x; |
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float pz = 0; |
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float plen = (float)Math.sqrt(px*px + py*py + pz*pz); |
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if( plen>0 ) |
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{
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px /= plen; |
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py /= plen; |
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pz /= plen; |
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float cosA = (float)Math.cos(plen*3.14f/mRenderer.mScreenMin); |
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float sinA = (float)Math.sqrt(1-cosA*cosA); |
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mRenderer.mQuat1.set(px*sinA, py*sinA, pz*sinA, cosA); |
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} |
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} |
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if( (mX-x)*(mX-x) + (mY-y)*(mY-y) > mRenderer.mScreenMin*mRenderer.mScreenMin/(DIRECTION_SENSITIVITY*DIRECTION_SENSITIVITY) ) |
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{
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mX = x; |
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mY = y; |
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resetQuats(); |
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} |
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break; |
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case MotionEvent.ACTION_UP : mX = -1; |
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mY = -1; |
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resetQuats(); |
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break; |
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} |
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return true; |
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} |
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} |
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Also available in: Unified diff
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