Distorted Android

        <activity android:name=".twocomponents.TwoComponentsActivity"/>

import org.distorted.examples.twocomponents.TwoComponentsActivity;

    TWOCOMPONENTS     (R.drawable.icon_example_wip             , R.string.example_twocomponents           , R.string.example_twocomponents_subtitle           ,            TwoComponentsActivity.class),

      PostprocessEffectGlow.enable();

        if( i<NUM_CUBITS-1 ) cubits[i] = cubits[NUM_CUBITS-1].copy(true);

///////////////////////////////////////////////////////////////////////////////////////////////////

// Copyright 2024 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Distorted.                                                               //

//                                                                                               //

// Distorted is free software: you can redistribute it and/or modify                             //

// it under the terms of the GNU General Public License as published by                          //

// the Free Software Foundation, either version 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

// Distorted is distributed in the hope that it will be useful,                                  //

// but WITHOUT ANY WARRANTY; without even the implied warranty of                                //

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                                 //

// GNU General Public License for more details.                                                  //

//                                                                                               //

// You should have received a copy of the GNU General Public License                             //

// along with Distorted.  If not, see <http://www.gnu.org/licenses/>.                            //

///////////////////////////////////////////////////////////////////////////////////////////////////

package org.distorted.examples.twocomponents;

import android.app.Activity;

import android.opengl.GLSurfaceView;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.CheckBox;

import org.distorted.examples.R;

import org.distorted.library.main.DistortedLibrary;

///////////////////////////////////////////////////////////////////////////////////////////////////

public class TwoComponentsActivity extends Activity

{

    @Override

    protected void onCreate(Bundle icicle) 

      {

      super.onCreate(icicle);

      DistortedLibrary.onCreate();

      setContentView(R.layout.twocomponentslayout);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    @Override

    protected void onPause() 

      {

      super.onPause();

      GLSurfaceView view = this.findViewById(R.id.twocomponentsSurfaceView);

      view.onPause();

      DistortedLibrary.onPause();

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    @Override

    protected void onResume() 

      {

      super.onResume();

      GLSurfaceView view = this.findViewById(R.id.twocomponentsSurfaceView);

      view.onResume();

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    @Override

    protected void onDestroy() 

      {

      DistortedLibrary.onDestroy();

      super.onDestroy();

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void onClick(View view)

      {

      Button butt = (Button)view;

      int id = butt.getId();

      TwoComponentsSurfaceView v = findViewById(R.id.twocomponentsSurfaceView);

      TwoComponentsRenderer r = v.getRenderer();

      if( id == R.id.twocomponentsButton0 ) r.apply(0);

      if( id == R.id.twocomponentsButton1 ) r.apply(1);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void onVisible(View view)

      {

      CheckBox check = (CheckBox)view;

      int id = check.getId();

      TwoComponentsSurfaceView v = findViewById(R.id.twocomponentsSurfaceView);

      TwoComponentsRenderer r = v.getRenderer();

      if( id == R.id.twocomponentsCheckBox0 ) r.visible(true);

      if( id == R.id.twocomponentsCheckBox1 ) r.visible(false);

      }

}

///////////////////////////////////////////////////////////////////////////////////////////////////

// Copyright 2024 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Distorted.                                                               //

//                                                                                               //

// Distorted is free software: you can redistribute it and/or modify                             //

// it under the terms of the GNU General Public License as published by                          //

// the Free Software Foundation, either version 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

// Distorted is distributed in the hope that it will be useful,                                  //

// but WITHOUT ANY WARRANTY; without even the implied warranty of                                //

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                                 //

// GNU General Public License for more details.                                                  //

//                                                                                               //

// You should have received a copy of the GNU General Public License                             //

// along with Distorted.  If not, see <http://www.gnu.org/licenses/>.                            //

///////////////////////////////////////////////////////////////////////////////////////////////////

package org.distorted.examples.twocomponents;

import android.content.res.Resources;

import android.graphics.Bitmap;

import android.graphics.Canvas;

import android.graphics.Paint;

import android.opengl.GLSurfaceView;

import org.distorted.library.effect.MatrixEffectMove;

import org.distorted.library.effect.MatrixEffectQuaternion;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.PostprocessEffectGlow;

import org.distorted.library.effect.VertexEffectDisappear;

import org.distorted.library.effect.VertexEffectMove;

import org.distorted.library.effect.VertexEffectRotate;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedLibrary;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.mesh.MeshBase;

import org.distorted.library.mesh.MeshJoined;

import org.distorted.library.mesh.MeshTriangle;

import org.distorted.library.type.Dynamic1D;

import org.distorted.library.type.DynamicQuat;

import org.distorted.library.type.Static1D;

import org.distorted.library.type.Static2D;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

import java.io.InputStream;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

///////////////////////////////////////////////////////////////////////////////////////////////////

class TwoComponentsRenderer implements GLSurfaceView.Renderer, DistortedLibrary.LibraryUser

{

    private final int[] FACE_COLORS = new int[] { 0xffffff00, 0xff00ff00, 0xff0000ff, 0xffff0000 };

    private final Resources mResources;

    private final DistortedScreen mScreen;

    private final DistortedEffects mEffects;

    private final Static3D mScale;

    private final VertexEffectRotate mRotate;

    private final VertexEffectDisappear mDisappear;

    private final Dynamic1D mAngleDyn;

    private final Static1D mAngle;

    private DistortedTexture mTexture;

    private MeshBase mMesh;

    private boolean mInvisibleLeft, mInvisibleRight;

    Static4D mQuat1, mQuat2;

    int mScreenMin;

///////////////////////////////////////////////////////////////////////////////////////////////////

    TwoComponentsRenderer(GLSurfaceView v)

      {

      mResources = v.getResources();

      mScreen = new DistortedScreen();

      mScale= new Static3D(1,1,1);

      Static3D center=new Static3D(0,0,0);

      mQuat1 = new Static4D(0,0,0,1);

      mQuat2 = new Static4D(-0.25189602f,0.3546389f,0.009657208f,0.90038127f);

      DynamicQuat quatInt1 = new DynamicQuat(0,0.5f);

      DynamicQuat quatInt2 = new DynamicQuat(0,0.5f);

      quatInt1.add(mQuat1);

      quatInt2.add(mQuat2);

      mAngle = new Static1D(0);

      mAngleDyn = new Dynamic1D(2000,0.5f);

      mAngleDyn.add(new Static1D(0));

      mAngleDyn.add( mAngle );

      mRotate = new VertexEffectRotate( mAngleDyn, new Static3D(1,0,0), new Static3D(0,0,0) );

      mDisappear = new VertexEffectDisappear();

      mDisappear.setMeshAssociation(0,-1);

      final float HALO_TO_RADIUS = 0.2f;

      Static2D haloRadius= new Static2D(25*HALO_TO_RADIUS,25);

      Static4D color     = new Static4D(1.0f,0.0f,0.0f,0.5f); // half-transparent red

      PostprocessEffectGlow glow = new PostprocessEffectGlow(haloRadius,color);

      mEffects = new DistortedEffects();

      mEffects.apply( mDisappear );

      mEffects.apply( mRotate );

      mEffects.apply( new MatrixEffectQuaternion(quatInt2, center) );

      mEffects.apply( new MatrixEffectQuaternion(quatInt1, center) );

      mEffects.apply( new MatrixEffectScale(mScale));

      mEffects.apply(glow);

      mScreen.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void onDrawFrame(GL10 glUnused) 

      {

      mScreen.render( System.currentTimeMillis() );

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void onSurfaceChanged(GL10 glUnused, int width, int height) 

      {

      final float SCALE = 0.4f;

      mScreenMin = Math.min(width, height);

      float factor = SCALE*mScreenMin;

      mScale.set(factor,factor,factor);

      mScreen.resize(width, height);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {

      if( mTexture==null ) mTexture = new DistortedTexture();

      mTexture.setTexture( createTexture() );

      if( mMesh==null ) mMesh = createMesh(1);  // has to be <=FACE_COLORS.length;

      mScreen.detachAll();

      mScreen.attach(mTexture,mEffects,mMesh);

      VertexEffectRotate.enable();

      VertexEffectDisappear.enable();

      PostprocessEffectGlow.enable();

      DistortedLibrary.onSurfaceCreated(this);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    void apply(int number)

      {

      mRotate.setMeshAssociation(0,number);

      mAngle.set(360);

      mAngleDyn.resetToBeginning();

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    void visible(boolean left)

      {

      if( left )

        {

        mInvisibleLeft = !mInvisibleLeft;

        mDisappear.setMeshAssociation(0, mInvisibleLeft ? 0 : -1 );

        }

      else

        {

        mInvisibleRight= !mInvisibleRight;

        mDisappear.setMeshAssociation(0, mInvisibleRight ? 1 : -1 );

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private MeshBase createMesh(int numMeshes)

      {

      MeshBase[] meshes = new MeshTriangle[numMeshes];

      VertexEffectMove[] moveEffect = new VertexEffectMove[numMeshes];

      meshes[0] = new MeshTriangle(1);

      meshes[0].setEffectAssociation(0,1,0);

      for(int i=1; i<numMeshes; i++)

        {

        meshes[i] = meshes[0].copy(true);

        meshes[i].setEffectAssociation(0,1,i);

        }

      Static4D[] textureMaps = new Static4D[numMeshes];

      for(int i=0; i<numMeshes; i++)

        {

        textureMaps[i] = new Static4D(i*0.25f,0.0f,0.25f,1.0f);

        }

      MeshBase[] tmp = new MeshBase[2];

      tmp[0] = new MeshJoined(meshes);

      for(int i=0; i<numMeshes; i++)

        {

        Static3D mv = new Static3D(0,0, numMeshes>1 ? (0.5f-i/(numMeshes-1.0f)) : 0 );

        moveEffect[i] = new VertexEffectMove(mv);

        moveEffect[i].setMeshAssociation(0,i);

        tmp[0].apply(moveEffect[i]);

        }

      tmp[1] = tmp[0].copy(true);

      tmp[0].mergeEffComponents();

      tmp[1].mergeEffComponents();

      tmp[0].setEffectAssociation(0,0,0); // set the equAssoc of the 0th (the only) component to 0

      tmp[1].setEffectAssociation(0,0,1); // set the equAssoc of the 0th (the only) component to 1

      MeshBase combined = new MeshJoined(tmp);

      MatrixEffectMove moveL = new MatrixEffectMove( new Static3D(-0.6f,0,0) );

      MatrixEffectMove moveR = new MatrixEffectMove( new Static3D(+0.6f,0,0) );

      combined.apply(moveL,0,0);

      combined.apply(moveR,0,1);

      combined.setTextureMap(textureMaps,0);

      combined.setTextureMap(textureMaps,numMeshes);

      combined.setComponentCenter(0,-0.6f,0,0);

      combined.setComponentCenter(1,+0.6f,0,0);

      return combined;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private Bitmap createTexture()

      {

      final int FACES=FACE_COLORS.length;

      int SIZE = 200;

      float STROKE = 0.05f*SIZE;

      float OFF = STROKE/2 -1;

      float OFF2 = 0.5f*SIZE + OFF;

      float HEIGHT = SIZE - OFF;

      float RADIUS = SIZE/12.0f;

      float ARC1_H = 0.2f*SIZE;

      float ARC1_W = SIZE*0.5f;

      float ARC2_W = 0.153f*SIZE;

      float ARC2_H = 0.905f*SIZE;

      float ARC3_W = SIZE-ARC2_W;

      Bitmap result = Bitmap.createBitmap(FACES*SIZE,SIZE, Bitmap.Config.ARGB_8888);

      Canvas canvas = new Canvas(result);

      Paint paint = new Paint();

      paint.setAntiAlias(true);

      paint.setStrokeWidth(STROKE);

      for(int i=0; i<FACES; i++)

        {

        paint.setColor(FACE_COLORS[i]);

        paint.setStyle(Paint.Style.FILL);

        canvas.drawRect(i*SIZE,0,(i+1)*SIZE,SIZE,paint);

        paint.setColor(0xff000000);

        paint.setStyle(Paint.Style.STROKE);

        canvas.drawLine(           i*SIZE, HEIGHT,  SIZE       +i*SIZE, HEIGHT, paint);

        canvas.drawLine(      OFF +i*SIZE,   SIZE,       OFF2  +i*SIZE,      0, paint);

        canvas.drawLine((SIZE-OFF)+i*SIZE,   SIZE, (SIZE-OFF2) +i*SIZE,      0, paint);

        canvas.drawArc( ARC1_W-RADIUS+i*SIZE, ARC1_H-RADIUS, ARC1_W+RADIUS+i*SIZE, ARC1_H+RADIUS, 225, 90, false, paint);

        canvas.drawArc( ARC2_W-RADIUS+i*SIZE, ARC2_H-RADIUS, ARC2_W+RADIUS+i*SIZE, ARC2_H+RADIUS, 105, 90, false, paint);

        canvas.drawArc( ARC3_W-RADIUS+i*SIZE, ARC2_H-RADIUS, ARC3_W+RADIUS+i*SIZE, ARC2_H+RADIUS, 345, 90, false, paint);

        }

      return result;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void distortedException(Exception ex)

      {

      android.util.Log.e("TwoComponents", ex.getMessage() );

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public InputStream localFile(int fileID)

      {

      return mResources.openRawResource(fileID);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void logMessage(String message)

      {

      android.util.Log.e("TwoComponents", message );

      }

}

///////////////////////////////////////////////////////////////////////////////////////////////////

// Copyright 2024 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Distorted.                                                               //

//                                                                                               //

// Distorted is free software: you can redistribute it and/or modify                             //

// it under the terms of the GNU General Public License as published by                          //

// the Free Software Foundation, either version 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

// Distorted is distributed in the hope that it will be useful,                                  //

// but WITHOUT ANY WARRANTY; without even the implied warranty of                                //

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                                 //

// GNU General Public License for more details.                                                  //

//                                                                                               //

// You should have received a copy of the GNU General Public License                             //

// along with Distorted.  If not, see <http://www.gnu.org/licenses/>.                            //

///////////////////////////////////////////////////////////////////////////////////////////////////

package org.distorted.examples.twocomponents;

import android.app.ActivityManager;

import android.content.Context;

import android.content.pm.ConfigurationInfo;

import android.opengl.GLSurfaceView;

import android.util.AttributeSet;

import android.view.MotionEvent;

///////////////////////////////////////////////////////////////////////////////////////////////////

class TwoComponentsSurfaceView extends GLSurfaceView

{

    private final static int DIRECTION_SENSITIVITY=  12;

    private int mX, mY;

    private TwoComponentsRenderer mRenderer;

///////////////////////////////////////////////////////////////////////////////////////////////////

    public TwoComponentsSurfaceView(Context context, AttributeSet attrs)

      {

      super(context,attrs);

      mX = -1;

      mY = -1;

      if(!isInEditMode())

        {

        mRenderer = new TwoComponentsRenderer(this);

        final ActivityManager activityManager     = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);

        final ConfigurationInfo configurationInfo = activityManager.getDeviceConfigurationInfo();

        setEGLContextClientVersion( (configurationInfo.reqGlEsVersion>>16) >= 3 ? 3:2 );

        setRenderer(mRenderer);

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public TwoComponentsRenderer getRenderer()

      {

      return mRenderer;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void resetQuats()

      {

      float qx = mRenderer.mQuat1.get0();

      float qy = mRenderer.mQuat1.get1();

      float qz = mRenderer.mQuat1.get2();

      float qw = mRenderer.mQuat1.get3();

      float rx = mRenderer.mQuat2.get0();

      float ry = mRenderer.mQuat2.get1();

      float rz = mRenderer.mQuat2.get2();

      float rw = mRenderer.mQuat2.get3();

       // This is quaternion multiplication. (tx,ty,tz,tw)

       // is now equal to (qx,qy,qz,qw)*(rx,ry,rz,rw)

       float tx = rw*qx - rz*qy + ry*qz + rx*qw;

       float ty = rw*qy + rz*qx + ry*qw - rx*qz;

       float tz = rw*qz + rz*qw - ry*qx + rx*qy;

       float tw = rw*qw - rz*qz - ry*qy - rx*qx;

       // The point of this is so that there are always

       // exactly 2 quaternions: Quat1 representing the rotation

       // accumulating only since the last screen touch, and Quat2

       // which remembers the combined effect of all previous

       // swipes.

       // We cannot be accumulating an ever-growing list of quaternions

       // and add a new one every time user swipes the screen - there

       // is a limited number of slots in the EffectQueueMatrix!

       mRenderer.mQuat1.set(0f, 0f, 0f, 1f);

       mRenderer.mQuat2.set(tx, ty, tz, tw);

       }

///////////////////////////////////////////////////////////////////////////////////////////////////

    @Override public boolean onTouchEvent(MotionEvent event) 

      {

      int action = event.getAction();

      int x = (int)event.getX();

      int y = (int)event.getY();

      switch(action)

         {

         case MotionEvent.ACTION_DOWN: mX = x;

                                       mY = y;

                                       break;

         case MotionEvent.ACTION_MOVE: if( mX>=0 && mY>= 0 )

                                         {

                                         float px = mY-y;

                                         float py = mX-x;

                                         float pz = 0;

                                         float plen = (float)Math.sqrt(px*px + py*py + pz*pz);

                                         if( plen>0 )

                                           {

                                           px /= plen;

                                           py /= plen;

                                           pz /= plen;

                                           float cosA = (float)Math.cos(plen*3.14f/mRenderer.mScreenMin);

                                           float sinA = (float)Math.sqrt(1-cosA*cosA);

                                           mRenderer.mQuat1.set(px*sinA, py*sinA, pz*sinA, cosA);

                                           }

                                         }

                                       if( (mX-x)*(mX-x) + (mY-y)*(mY-y) > mRenderer.mScreenMin*mRenderer.mScreenMin/(DIRECTION_SENSITIVITY*DIRECTION_SENSITIVITY) )

                                         {

                                         mX = x;

                                         mY = y;

                                         resetQuats();

                                         }

                                       break;

         case MotionEvent.ACTION_UP  : mX = -1;

                                       mY = -1;

                                       resetQuats();

                                       break;

         }

      return true;

      }

}

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <org.distorted.examples.twocomponents.TwoComponentsSurfaceView

        android:id="@+id/twocomponentsSurfaceView"

        android:layout_width="fill_parent"

        android:layout_height="0dp"

        android:layout_weight="1" />

    <LinearLayout

        android:orientation="horizontal"

        android:layout_width="match_parent"

        android:layout_height="wrap_content">

        <Button

            android:id="@+id/twocomponentsButton0"

            android:layout_width="wrap_content"

            android:layout_height="match_parent"

            android:text="@string/rotate_left"

            android:onClick="onClick"

            android:layout_weight="1"/>

        <CheckBox

            android:id="@+id/twocomponentsCheckBox0"

            android:layout_width="wrap_content"

            android:layout_height="match_parent"

            android:text=""

            android:onClick="onVisible"

            android:layout_weight="1"

            android:checked="false"/>

        <Button

            android:id="@+id/twocomponentsButton1"

            android:layout_width="wrap_content"

            android:layout_height="match_parent"

            android:text="@string/rotate_right"

            android:onClick="onClick"

            android:layout_weight="1"/>

        <CheckBox

            android:id="@+id/twocomponentsCheckBox1"

            android:layout_width="wrap_content"

            android:layout_height="match_parent"

            android:text=""

            android:onClick="onVisible"

            android:layout_weight="1"

            android:checked="false"/>

    </LinearLayout>

</LinearLayout>

    <string name="example_twocomponents">Glow Part of Mesh</string>

    <string name="example_twocomponents_subtitle">Attempt to apply a postprocess effect, GLOW, to only one vertex subcomponent of a Mesh.</string>