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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2016 Leszek Koltunski //
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// //
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// This file is part of Distorted. //
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// //
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// Distorted is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// Distorted is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.examples.listener;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Random;
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import javax.microedition.khronos.egl.EGLConfig;
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import javax.microedition.khronos.opengles.GL10;
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import org.distorted.examples.R;
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import org.distorted.library.effect.EffectType;
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import org.distorted.library.effect.MatrixEffectScale;
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import org.distorted.library.effect.VertexEffectDistort;
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import org.distorted.library.main.DistortedLibrary;
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import org.distorted.library.main.DistortedScreen;
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import org.distorted.library.mesh.MeshRectangles;
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import org.distorted.library.main.DistortedTexture;
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import org.distorted.library.main.DistortedEffects;
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import org.distorted.library.type.Dynamic3D;
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import org.distorted.library.type.Static3D;
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import org.distorted.library.type.Static4D;
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import org.distorted.library.message.EffectListener;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.opengl.GLSurfaceView;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Show how to use the setMax, notifyWhenFinished / effectFinished APIs
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class ListenerRenderer implements GLSurfaceView.Renderer,EffectListener
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{
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private final int NUM_CONCURRENT_BUBBLES = 12;
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private GLSurfaceView mView;
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private DistortedEffects mEffects;
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private DistortedScreen mScreen;
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private DistortedTexture mTexture;
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private MeshRectangles mMesh;
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private Random mRnd;
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private Static3D mScale;
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private float mBmpRatio;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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ListenerRenderer(GLSurfaceView v)
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{
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mView = v;
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mTexture = new DistortedTexture();
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mScreen = new DistortedScreen();
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mRnd = new Random(0);
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mScale = new Static3D(1,1,1);
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mEffects = new DistortedEffects();
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mEffects.apply(new MatrixEffectScale(mScale));
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for(int i=0; i<NUM_CONCURRENT_BUBBLES; i++)
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{
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VertexEffectDistort newEffect = createNewBubble();
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if( !mEffects.apply(newEffect) )
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{
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android.util.Log.e("listener", "failed to add bubble - this should never happen!");
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private VertexEffectDistort createNewBubble()
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{
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float radius = 0.10f + 0.70f*mRnd.nextFloat() ; // pop up a bubble of size (radius,height)
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float height = -0.10f + 0.20f*mRnd.nextFloat() ; //
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float pointx = 0.80f * (mRnd.nextFloat()-0.5f); // at a random place on the bitmap (but not near the edge)
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float pointy = 0.80f * (mRnd.nextFloat()-0.5f); //
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int duration = 1000 + mRnd.nextInt(3000); // for anytime from 1 to 4 seconds
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// '1.0f' i.e. from (0,0,0) to (0,0,height) and back to (0,0,0) - full circle.
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Dynamic3D dDistort = new Dynamic3D(duration,1.0f);
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dDistort.add(new Static3D(0,0, 0));
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dDistort.add(new Static3D(0,0,height));
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Static3D center = new Static3D(pointx,pointy,0);
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Static4D region = new Static4D(0,0,0,radius);
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VertexEffectDistort distort = new VertexEffectDistort(dDistort,center,region);
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// We want to know when this effect finishes so that we can add a new one.
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distort.notifyWhenFinished(this);
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return distort;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// An effect just finished, i.e. its Dynamic 'dDistort' reached its end point.
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// The ID of the finished effect is 'effectID' but here we know it must be one of the Distorts
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// and we don't care which one it is - just remove the finished effect from the Effect queues and
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// add a new one right back in.
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public void effectFinished(final long effectID)
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{
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mEffects.abortById(effectID);
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VertexEffectDistort newEffect = createNewBubble();
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if( !mEffects.apply(newEffect) )
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{
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android.util.Log.e("Listener", "failed to add new bubble - this should never happen!");
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void onDrawFrame(GL10 glUnused)
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{
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mScreen.render( System.currentTimeMillis() );
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void onSurfaceChanged(GL10 glUnused, int width, int height)
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{
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if( width<height ) mScale.set( width, width*mBmpRatio, width );
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else mScale.set( height/mBmpRatio, height, height );
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mScreen.resize(width, height);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void onSurfaceCreated(GL10 glUnused, EGLConfig config)
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{
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InputStream is = mView.getContext().getResources().openRawResource(R.raw.water);
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Bitmap bitmap;
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try
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{
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bitmap = BitmapFactory.decodeStream(is);
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}
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finally
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{
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try
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{
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is.close();
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}
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catch(IOException e) { }
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}
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mBmpRatio = (float)bitmap.getHeight()/bitmap.getWidth();
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mTexture.setTexture(bitmap);
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if( mMesh==null ) mMesh = new MeshRectangles(50, (int)(50*mBmpRatio) );
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mScreen.detachAll();
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mScreen.attach(mTexture,mEffects,mMesh);
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// Normally we can only hold no more than 5 (see EffectType.reset()) Vertex
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// effects at any given time. Here we want 12, so we need to increase the default.
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// We need to call this before we call onCreate; best done here.
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// After onCreate we can also call this but only to decrease this value!
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//
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// One more than we have bubbles at any given time because it can sometimes
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// happen that the old bubble is not yet removed when we add a new one.
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DistortedLibrary.setMax(EffectType.VERTEX,NUM_CONCURRENT_BUBBLES+1);
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VertexEffectDistort.enable();
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try
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{
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DistortedLibrary.onCreate(mView.getContext());
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}
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catch(Exception ex)
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{
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android.util.Log.e("Listener", ex.getMessage() );
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}
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}
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}
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