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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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Leszek Koltunski
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// //
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Leszek Koltunski
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// Distorted is free software: you can redistribute it and/or modify //
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Leszek Koltunski
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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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Leszek Koltunski
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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Leszek Koltunski
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package org.distorted.examples.monalisa;
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import java.io.IOException;
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import java.io.InputStream;
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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.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.DistortedEffects;
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import org.distorted.library.main.DistortedScreen;
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import org.distorted.library.main.DistortedTexture;
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import org.distorted.library.mesh.MeshRectangles;
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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 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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class MonaLisaRenderer implements GLSurfaceView.Renderer
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{
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private GLSurfaceView mView;
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private DistortedEffects mEffects;
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private DistortedTexture mTexture;
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private MeshRectangles mMesh;
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private DistortedScreen mScreen;
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private Static3D mScale;
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private float mBmpRatio;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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MonaLisaRenderer(GLSurfaceView v)
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{
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mView = v;
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// MonaLisa bitmap is 320x366, this is thus (90,108) pixels from the lower-left corner
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Static3D centerLeft = new Static3D( ( 90-320*0.5f)/320.0f, (108-366*0.5f)/366.0f, 0);
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// (176,111) from the lower left
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Static3D centerRight = new Static3D( (176-320*0.5f)/320.0f, (111-366*0.5f)/366.0f, 0);
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// two regions defining the areas affected by the Distort effect
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Static4D rLeft = new Static4D( -10/320.0f, 10/366.0f, 0, 25/320.0f);
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Static4D rRight = new Static4D( 10/320.0f, 5/366.0f, 0, 25/320.0f);
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// two dynamics for interpolating through vectors of distortion. Interpolate
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// every 1000 milliseconds, indefinitely ('0.0f').
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Dynamic3D dLeft = new Dynamic3D(1000,0.0f);
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Dynamic3D dRight= new Dynamic3D(1000,0.0f);
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// two vectors of distortion the left tip of the mouth gets distorted with -
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// interpolated from (0,0,0) - i.e. no distortion - to (-20 pixels, 20 pixels, 0), i.e.
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// slightly to the top left.
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dLeft.add ( new Static3D( 0, 0, 0) );
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dLeft.add ( new Static3D(-20/320.0f, 20/366.0f, 0) );
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// likewise two vectors the right tip is distorted with.
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dRight.add( new Static3D( 0, 0, 0) );
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dRight.add( new Static3D( 20/320.0f, 10/366.0f, 0) );
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// Equip MonaLisa with the Effects we want to draw her with - i.e. two Distorts of the mouth
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mEffects = new DistortedEffects();
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mEffects.apply( new VertexEffectDistort(dLeft , centerLeft , rLeft ) );
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mEffects.apply( new VertexEffectDistort(dRight, centerRight, rRight) );
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// ... and a Scale - so far by (1,1,1), i.e. no scale. The mScale point will be computed
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// later, in onSurfaceChanged, when we actually know the size of the screen and know how
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// much to scale the initial Mesh (which is 1x1x0 in size)
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mScale= new Static3D(1,1,1);
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mEffects.apply(new MatrixEffectScale(mScale));
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mScreen = new DistortedScreen();
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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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float min= width>height ? height : width;
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mScale.set( min, min*mBmpRatio, 1 );
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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.monalisa);
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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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// We could have gotten here after the activity went to the background
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// for a brief amount of time; in this case mTexture is already created.
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// Do not create it the second time around then.
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if( mTexture==null ) mTexture = new DistortedTexture();
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// likewise the Mesh
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// Create an underlying Mesh of 9x10 vertices - this is for the Distort
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// effect to have vertices to distort. We multiply by mBmpRatio here so
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// that the Mesh's cells are as close to squares as possible (when they
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// finally be rendered with a Scale - see mScale)
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if( mMesh==null ) mMesh = new MeshRectangles(9, (int)(9*mBmpRatio) );
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// even if mTexture wasn't null, we still need to call setTexture() on it
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// because every time activity goes to background, its OpenGL resources
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// - including Textures - get deleted. We always need to call setTexture()
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// to recreate the internal OpenGL textures.
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mTexture.setTexture(bitmap);
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// Build the Scene Graph - attach all Objects we want to be rendered to the Screen.
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mScreen.detachAll();
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mScreen.attach(mTexture,mEffects,mMesh);
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// All effects are by default disabled! Enable all we need (and better only those)
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// before the call to DistortedLibrary.onCreate(). Best done here.
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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("MonaLisa", ex.getMessage() );
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}
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}
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}
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