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.meshjoin;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLSurfaceView;

import org.distorted.examples.R;

import org.distorted.library.effect.MatrixEffect;

import org.distorted.library.effect.MatrixEffectMove;

import org.distorted.library.effect.MatrixEffectQuaternion;

import org.distorted.library.effect.MatrixEffectRotate;

import org.distorted.library.effect.MatrixEffectScale;

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.MeshQuad;

import org.distorted.library.mesh.MeshRectangles;

import org.distorted.library.mesh.MeshSphere;

import org.distorted.library.mesh.MeshTriangles;

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.IOException;

import java.io.InputStream;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

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

class MeshJoinRenderer implements GLSurfaceView.Renderer

{

    private GLSurfaceView mView;

    private DistortedTexture mTexture;

    private DistortedScreen mScreen;

    private DistortedEffects mEffects;

    private Static3D mScale;

    private MeshBase mMesh;

    Static4D mQuat1, mQuat2;

    int mScreenMin;

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

    MeshJoinRenderer(GLSurfaceView v)

      {

      mView = v;

      mScreen = new DistortedScreen();

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

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

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

      mQuat2 = new Static4D(0,0,0,1);  // quaternions

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

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

      quatInt1.add(mQuat1);

      quatInt2.add(mQuat2);

      mEffects = new DistortedEffects();

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

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

      mEffects.apply( new MatrixEffectScale(mScale));

      }

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

    public void onDrawFrame(GL10 glUnused) 

      {

      mScreen.render( System.currentTimeMillis() );

      }

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

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

      {

      final float SCALE = 0.6f;

      mScreenMin = width<height ? width:height;

      float factor = SCALE*mScreenMin;

      mScale.set(factor,factor,factor);

      mScreen.resize(width, height);

      }

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {

      InputStream is = mView.getContext().getResources().openRawResource(R.raw.grid);

      Bitmap bitmap;

      try

        {

        bitmap = BitmapFactory.decodeStream(is);

        }

      finally

        {

        try

          {

          is.close();

          }

        catch(IOException e) { }

        }

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

      mTexture.setTexture(bitmap);

      if( mMesh==null ) mMesh = createJoinedTetrahedron();

     // mMesh.setShowNormals(true);

      mScreen.detachAll();

      mScreen.attach(mTexture,mEffects,mMesh);

      try

        {

        DistortedLibrary.onCreate(mView.getContext());

        }

      catch(Exception ex)

        {

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

        }

      }

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

    private MeshBase createJoinedDoubleQuad()

      {

      MeshBase[] meshes = new MeshBase[2];

      meshes[0] = new MeshQuad();

      meshes[1] = new MeshQuad();

      MatrixEffect[] effects0 = new MatrixEffect[1];

      effects0[0] = new MatrixEffectMove( new Static3D(0,+0.6f,0));

      meshes[0].apply(effects0);

      MatrixEffect[] effects1 = new MatrixEffect[1];

      effects1[0] = new MatrixEffectMove( new Static3D(0,-0.6f,0));

      meshes[1].apply(effects1);

      return new MeshJoined(meshes);

      }

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

    private MeshBase createJoinedSphereAndTriangle()

      {

      MeshBase[] meshes = new MeshBase[2];

      meshes[0] = new MeshSphere(5);

      meshes[1] = new MeshTriangles(5);

      MatrixEffect[] effects0 = new MatrixEffect[2];

      effects0[0] = new MatrixEffectScale( new Static3D(0.5f, 1.0f, 0.5f) );

      effects0[1] = new MatrixEffectMove( new Static3D(+0.25f,0,0));

      meshes[0].apply(effects0);

      MatrixEffect[] effects1 = new MatrixEffect[2];

      effects1[0] = new MatrixEffectScale( new Static3D(0.5f, 1.0f, 0.5f) );

      effects1[1] = new MatrixEffectMove( new Static3D(-0.25f,0,0));

      meshes[1].apply(effects1);

      return new MeshJoined(meshes);

      }

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

    private MeshBase createJoinedCube()

      {

      final int MESHES=6;

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

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

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

      Static1D angle  = new Static1D(0);

      MatrixEffect[] effectsY = new MatrixEffect[2];

      effectsY[0] = new MatrixEffectMove(new Static3D(0,0,+0.5f));

      effectsY[1] = new MatrixEffectRotate( angle, axisY, center );

      MeshBase[] meshes = new MeshRectangles[MESHES];

      for(int i=0; i<MESHES; i++) meshes[i] = new MeshRectangles(5,5);

      angle.set(0);

      meshes[0].apply(effectsY);

      angle.set(90);

      meshes[1].apply(effectsY);

      angle.set(180);

      meshes[2].apply(effectsY);

      angle.set(270);

      meshes[3].apply(effectsY);

      MatrixEffect[] effectsX = new MatrixEffect[2];

      effectsX[0] = new MatrixEffectMove(new Static3D(0,0,+0.5f));

      effectsX[1] = new MatrixEffectRotate( angle, axisX, center );

      angle.set( 90);

      meshes[4].apply(effectsX);

      angle.set(-90);

      meshes[5].apply(effectsX);

      MeshJoined result = new MeshJoined(meshes);

      Static4D[] maps = new Static4D[MESHES];

      maps[0] = new Static4D(3.0f/8, 3.0f/8, 2.0f/8, 2.0f/8);

      maps[1] = new Static4D(5.0f/8, 1.0f/8, 2.0f/8, 2.0f/8);

      maps[2] = new Static4D(1.0f/8, 5.0f/8, 2.0f/8, 2.0f/8);

      maps[3] = new Static4D(1.0f/8, 3.0f/8, 2.0f/8, 2.0f/8);

      maps[4] = new Static4D(3.0f/8, 1.0f/8, 2.0f/8, 2.0f/8);

      maps[5] = new Static4D(1.0f/8, 1.0f/8, 2.0f/8, 2.0f/8);

      result.setTextureMap(maps);

      return result;

      }

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

    private MeshBase createJoinedTetrahedron()

      {

      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;

      MeshBase[] meshes = new MeshTriangles[MESHES];

      for(int i=0; i<MESHES; i++) meshes[i] = new MeshTriangles(5);

      MatrixEffect[] effects0 = new MatrixEffect[3];

      effects0[0] = new MatrixEffectScale( new Static3D(1,SQ3/2,1) );

      effects0[1] = new MatrixEffectRotate( new Static1D(90), new Static3D(1,0,0), new Static3D(0,0,0) );

      effects0[2] = new MatrixEffectMove( new Static3D(0,-SQ3/6,SQ3/12) );

      meshes[0].apply(effects0);

      Static1D angle = new Static1D(angleFaces);

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

      Static3D center= new Static3D(0,-SQ3/6,-SQ3/6);

      MatrixEffect[] effects1 = new MatrixEffect[5];

      effects1[0] = effects0[0];

      effects1[1] = effects0[1];

      effects1[2] = effects0[2];

      effects1[3] = new MatrixEffectRotate( new Static1D(180), new Static3D(0,0,1), center );

      effects1[4] = new MatrixEffectRotate( angle, axis, center );

      meshes[1].apply(effects1);

      axis.set(0.5f,0,-SQ3/2);

      center.set2(SQ3/3);

      meshes[2].apply(effects1);

      axis.set2(SQ3/2);

      meshes[3].apply(effects1);

      return new MeshJoined(meshes);

      }

}