Distorted Android

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

// Copyright 2016 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.meshfile;

import android.content.Context;

import android.content.res.Resources;

import android.graphics.Bitmap;

import android.graphics.Canvas;

import android.graphics.Paint;

import android.opengl.GLSurfaceView;

import org.distorted.examples.R;

import org.distorted.library.effect.EffectType;

import org.distorted.library.effect.MatrixEffectQuaternion;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.VertexEffectDeform;

import org.distorted.library.effect.VertexEffectDisappear;

import org.distorted.library.effect.VertexEffectMove;

import org.distorted.library.effect.VertexEffectRotate;

import org.distorted.library.effect.VertexEffectSink;

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.MeshFile;

import org.distorted.library.mesh.MeshJoined;

import org.distorted.library.mesh.MeshPolygon;

import org.distorted.library.type.DynamicQuat;

import org.distorted.library.type.Static1D;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

import java.io.DataInputStream;

import java.io.IOException;

import java.io.InputStream;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

import static org.distorted.examples.meshfile.MeshFileActivity.PROCEDURAL;

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

class MeshFileRenderer implements GLSurfaceView.Renderer, DistortedLibrary.ExceptionListener

{

    private final float DEFAULT_SCALE = 0.3f;

    private GLSurfaceView mView;

    private DistortedTexture mTexture;

    private DistortedScreen mScreen;

    private DistortedEffects mEffects;

    private Static3D mScale;

    private long mTime;

    private float mCurrentScale;

    private MeshBase mMesh;

    Static4D mQuat1, mQuat2;

    int mScreenMin;

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

    MeshFileRenderer(GLSurfaceView v)

      {

      mView = v;

      mScreen = new DistortedScreen();

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

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

      mCurrentScale = DEFAULT_SCALE;

      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);

      VertexEffectDisappear disappear = new VertexEffectDisappear();

      disappear.setMeshAssociation(1,-1);

      mEffects = new DistortedEffects();

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

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

      mEffects.apply( new MatrixEffectScale(mScale));

      mEffects.apply( disappear );

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

      mScreen.showFPS();

      }

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

    public void onDrawFrame(GL10 glUnused) 

      {

      mScreen.render( System.currentTimeMillis() );

      }

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

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

      {

      mScreenMin = Math.min(width, height);

      float factor = mCurrentScale*mScreenMin;

      mScale.set(factor,factor,factor);

      mScreen.resize(width, height);

      }

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {

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

      VertexEffectDisappear.enable();

      VertexEffectRotate.enable();

      VertexEffectDeform.enable();

      DistortedLibrary.setMax(EffectType.VERTEX, 12);

      DistortedLibrary.onCreate(mView.getContext(), this);

      }

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

    public void distortedException(Exception ex)

      {

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

      }

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

//   0 ---> 0

//  50 ---> DEFAULT_SCALE

// 100 ---> 4*DEFAULT_SCALE

    void setScale(int scale)

      {

      if( scale<= 50 )

        {

        mCurrentScale = DEFAULT_SCALE * scale / 50.0f;

        }

      else

        {

        mCurrentScale = DEFAULT_SCALE * ( 3*(scale/50.0f) - 2.0f);

        }

      float factor = mCurrentScale*mScreenMin;

      mScale.set(factor,factor,factor);

      }

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

    void open(int resourceID)

      {

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

      mTexture.setTexture( createTexture(resourceID) );

      long t1 = System.currentTimeMillis();

      if( resourceID!=PROCEDURAL )

        {

        openMesh(resourceID);

        }

      else

        {

        createMesh();

        }

      long t2 = System.currentTimeMillis();

      mTime = t2-t1;

      mScreen.detachAll();

      mScreen.attach(mTexture,mEffects,mMesh);

      }

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

    private Bitmap createTexture(int resourceID)

      {

      switch(resourceID)

          {

          case  R.raw.deferredjob:

          case  R.raw.meshjoin   : final int[] TET_COLORS4 = new int[] { 0xffffff00,

                                                                         0xff00ff00,

                                                                         0xff0000ff,

                                                                         0xffff0000 };

                                   return createTetrahedronTexture(TET_COLORS4);

          case  R.raw.predeform  : return createGridTexture(3);

          case  R.raw.cube2      :

          case  R.raw.cube3      :

          case  R.raw.cube4      :

          case  R.raw.cube5      : final int[] CUBE_COLORS = new int[] { 0xffffff00,

                                                                         0xffffffff,

                                                                         0xff0000ff,

                                                                         0xff00ff00,

                                                                         0xffff0000,

                                                                         0xffb5651d };

                                   return createCubeTexture(CUBE_COLORS);

          case  PROCEDURAL       :

          case  R.raw.pyra3      :

          case  R.raw.pyra4      :

          case  R.raw.pyra5      : final int[] TET_COLORS5 = new int[] { 0xffffff00,

                                                                         0xff00ff00,

                                                                         0xff0000ff,

                                                                         0xffff0000,

                                                                         0xff000000 };

                                   return createTetrahedronTexture(TET_COLORS5);

          case  R.raw.dino       : final int[] TET_COLORS7 = new int[] { 0xffffff00,

                                                                         0xffffffff,

                                                                         0xff0000ff,

                                                                         0xff00ff00,

                                                                         0xffff0000,

                                                                         0xffb5651d,

                                                                         0xff000000 };

                                   return createTetrahedronTexture(TET_COLORS7);

          }

      return null;

      }

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

    private Bitmap createCubeTexture(int[] faceColors)

      {

      final int FACES=faceColors.length;

      int SIZE = 200;

      final float R = SIZE*0.10f;

      final float M = SIZE*0.05f;

      Bitmap bitmap;

      Paint paint = new Paint();

      bitmap = Bitmap.createBitmap( (FACES+1)*SIZE, SIZE, Bitmap.Config.ARGB_8888);

      Canvas canvas = new Canvas(bitmap);

      paint.setStyle(Paint.Style.FILL);

      paint.setColor(0xff000000);

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

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

        {

        paint.setColor(faceColors[face]);

        canvas.drawRoundRect( face*SIZE+M, M, (face+1)*SIZE-M, SIZE-M, R, R, paint);

        }

      return bitmap;

      }

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

    private Bitmap createGridTexture(int lines)

      {

      int SIZE = 200;

      Bitmap bitmap = Bitmap.createBitmap(SIZE,SIZE, Bitmap.Config.ARGB_8888);

      Canvas canvas = new Canvas(bitmap);

      Paint paint = new Paint();

      paint.setColor(0xff008800);

      paint.setStyle(Paint.Style.FILL);

      canvas.drawRect(0, 0, SIZE, SIZE, paint);

      paint.setColor(0xffffffff);

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

        {

        int x = (SIZE*i)/lines;

        canvas.drawRect(x-1,   0,  x+1, SIZE, paint);

        canvas.drawRect(  0, x-1, SIZE,  x+1, paint);

        }

      return bitmap;

      }

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

    private Bitmap createTetrahedronTexture(int[] faceColors)

      {

      final float SQ3 = (float)Math.sqrt(3);

      final int FACES=faceColors.length;

      int SIZE = 256;

      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;

      float M = SQ3/2;

      float D = (M/2 - 0.51f)*SIZE;

      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(faceColors[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, M*HEIGHT+D,  SIZE       +i*SIZE, M*HEIGHT+D, paint);

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

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

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

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

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

        }

      return result;

      }

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

  private MeshBase createStaticMesh()

    {

    final float SQ2 = (float)Math.sqrt(2);

    final float SQ3 = (float)Math.sqrt(3);

    final float angleFaces = (float)((180/Math.PI)*(2*Math.asin(SQ3/3))); // angle between two faces of a tetrahedron

    final int MESHES=4;

    int association = 1;

    MeshBase[] meshes;

    float D = 0.0005f;

    float E = SQ3/2 - 3*D*SQ2;

    float F = 0.5f - D*SQ2*SQ3;

    float[] vertices = { -F,-E/3, +F,-E/3, 0.0f,2*E/3};

    float[] bands = new float[] {    1.0f    ,-D,

                                     1.0f  -D,-D*0.80f,

                                     1.0f-2*D,-D*0.65f,

                                     1.0f-4*D,+D*0.10f,

                                     0.50f, 0.035f,

                                     0.0f, 0.040f };

    meshes = new MeshPolygon[MESHES];

    meshes[0] = new MeshPolygon(vertices, bands, 2,2);

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

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

      {

      association <<= 1;

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

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

      }

    MeshBase result = new MeshJoined(meshes);

    Static3D a0 = new Static3D(         0,        1,       0 );

    Static3D a1 = new Static3D(         0,  -1.0f/3, 2*SQ2/3 );

    Static3D a2 = new Static3D(-SQ2*SQ3/3,  -1.0f/3,  -SQ2/3 );

    Static3D a3 = new Static3D( SQ2*SQ3/3,  -1.0f/3,  -SQ2/3 );

    float tetraHeight = SQ2*SQ3/3;

    float d1 = (0.75f-2*SQ2*D)*tetraHeight;

    float d2 =-0.06f*tetraHeight;

    float d3 = 0.05f*tetraHeight;

    float d4 = 0.70f*tetraHeight;

    float d5 = 1.2f;

    Static3D dCen0 = new Static3D( d1*a0.get0(), d1*a0.get1(), d1*a0.get2() );

    Static3D dCen1 = new Static3D( d1*a1.get0(), d1*a1.get1(), d1*a1.get2() );

    Static3D dCen2 = new Static3D( d1*a2.get0(), d1*a2.get1(), d1*a2.get2() );

    Static3D dCen3 = new Static3D( d1*a3.get0(), d1*a3.get1(), d1*a3.get2() );

    Static3D dVec0 = new Static3D( d2*a0.get0(), d2*a0.get1(), d2*a0.get2() );

    Static3D dVec1 = new Static3D( d2*a1.get0(), d2*a1.get1(), d2*a1.get2() );

    Static3D dVec2 = new Static3D( d2*a2.get0(), d2*a2.get1(), d2*a2.get2() );

    Static3D dVec3 = new Static3D( d2*a3.get0(), d2*a3.get1(), d2*a3.get2() );

    Static4D dReg  = new Static4D(0,0,0,d3);

    Static1D dRad  = new Static1D(1);

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

    Static4D sReg  = new Static4D(0,0,0,d4);

    Static1D sink  = new Static1D(d5);

    Static1D angle  = new Static1D(angleFaces);

    Static3D axis1  = new Static3D(  -1, 0,      0);

    Static3D axis2  = new Static3D(0.5f, 0, -SQ3/2);

    Static3D axis3  = new Static3D(0.5f, 0, +SQ3/2);

    Static3D center1= new Static3D(0,-SQ3*SQ2/12,-SQ3/6);

    Static3D center2= new Static3D(0,-SQ3*SQ2/12,+SQ3/3);

    VertexEffectRotate  effect1 = new VertexEffectRotate( new Static1D(90), new Static3D(1,0,0), center );

    VertexEffectMove    effect2 = new VertexEffectMove  ( new Static3D(0,-SQ3*SQ2/12,0) );

    VertexEffectRotate  effect3 = new VertexEffectRotate( new Static1D(180), new Static3D(0,0,1), center1 );

    VertexEffectRotate  effect4 = new VertexEffectRotate( angle, axis1, center1 );

    VertexEffectRotate  effect5 = new VertexEffectRotate( angle, axis2, center2 );

    VertexEffectRotate  effect6 = new VertexEffectRotate( angle, axis3, center2 );

    VertexEffectDeform  effect7 = new VertexEffectDeform(dVec0, dRad, dCen0, dReg);

    VertexEffectDeform  effect8 = new VertexEffectDeform(dVec1, dRad, dCen1, dReg);

    VertexEffectDeform  effect9 = new VertexEffectDeform(dVec2, dRad, dCen2, dReg);

    VertexEffectDeform  effect10= new VertexEffectDeform(dVec3, dRad, dCen3, dReg);

    VertexEffectSink    effect11= new VertexEffectSink(sink,center, sReg);

    effect3.setMeshAssociation(14,-1);  // apply to mesh[1], [2] and [3]

    effect4.setMeshAssociation( 2,-1);  // apply only to mesh[1]

    effect5.setMeshAssociation( 4,-1);  // apply only to mesh[2]

    effect6.setMeshAssociation( 8,-1);  // apply only to mesh[3]

    result.apply(effect1);

    result.apply(effect2);

    result.apply(effect3);

    result.apply(effect4);

    result.apply(effect5);

    result.apply(effect6);

    result.apply(effect7);

    result.apply(effect8);

    result.apply(effect9);

    result.apply(effect10);

    result.apply(effect11);

    final float ratio = 0.2f;

    final Static4D[] maps = new Static4D[MESHES];

    for(int mesh=0; mesh<MESHES; mesh++)

      {

      maps[mesh] = new Static4D( mesh*ratio, 0.0f, ratio, 1.0f);

      }

    result.setTextureMap(maps,0);

    result.setShowNormals(true);

    return result;

    }

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

    private void createMesh()

      {

      mMesh = createStaticMesh();

      int numEff = mMesh.numEffComponents();

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

        {

        mMesh.setEffectAssociation(i, 0, i);

        }

      }

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

    private void openMesh(int resourceID)

      {

      Context con = mView.getContext();

      Resources res = con.getResources();

      InputStream is = res.openRawResource(resourceID);

      DataInputStream dos = new DataInputStream(is);

      mMesh = new MeshFile(dos);

      int numEff = mMesh.numEffComponents();

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

        {

        mMesh.setEffectAssociation(i, 0, i);

        }

      try

        {

        is.close();

        }

      catch(IOException e)

        {

        android.util.Log.e("MeshFile", "Error closing InputStream: "+e.toString());

        }

      }

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

    MeshBase getMesh()

      {

      return mMesh;

      }

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

    long getTime()

      {

      return mTime;

      }

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

    int getBytes()

      {

      if( mMesh instanceof MeshFile )

        {

        return ((MeshFile)mMesh).getNumBytes();

        }

      return 0;

      }

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

    int getVertices()

      {

      return mMesh.getNumVertices();

      }

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

    int getEndEffIndex(int component)

      {

      return mMesh.getLastVertexEff(component);

      }

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

    int getEndTexIndex(int component)

      {

      return mMesh.getLastVertexTex(component);

      }

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

    int getEffComponentNum()

      {

      return mMesh.numEffComponents();

      }

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

    int getTexComponentNum()

      {

      return mMesh.numTexComponents();

      }

}