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70b76549
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2019 Leszek Koltunski //
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// //
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// This file is part of Magic Cube. //
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// //
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// Magic Cube 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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// Magic Cube 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 Magic Cube. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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1f9772f3
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Leszek Koltunski
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package org.distorted.objects;
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import android.content.SharedPreferences;
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import org.distorted.library.effect.MatrixEffectMove;
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import org.distorted.library.effect.MatrixEffectQuaternion;
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import org.distorted.library.effect.MatrixEffectRotate;
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import org.distorted.library.main.DistortedEffects;
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import org.distorted.library.main.DistortedNode;
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b32444ee
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Leszek Koltunski
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import org.distorted.library.mesh.MeshBase;
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70b76549
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import org.distorted.library.message.EffectListener;
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import org.distorted.library.type.Dynamic1D;
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import org.distorted.library.type.Static1D;
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import org.distorted.library.type.Static3D;
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import org.distorted.library.type.Static4D;
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1f9772f3
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Leszek Koltunski
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import org.distorted.main.RubikSurfaceView;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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class Cubit
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{
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private static final Static3D matrCenter = new Static3D(0,0,0);
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private final Static3D mOrigPosition;
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private RubikObject mParent;
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private MeshBase mMesh;
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private Static3D mRotationAxis;
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private MatrixEffectRotate mRotateEffect;
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0e7bcfb1
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private Static3D mCurrentPosition;
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private int mNumAxis;
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Dynamic1D mRotationAngle;
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DistortedNode mNode;
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DistortedEffects mEffect;
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Static4D mQuatScramble;
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66cbdd21
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float[] mRotationRow;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Because of quatMultiplication, errors can accumulate - so to avoid this, we
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// correct the value of the 'scramble' quat to what it should be - one of the legal quats from the
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// list LEGAL_QUATS.
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//
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// We also have to remember that the group of unit quaternions is a double-cover of rotations
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// in 3D ( q represents the same rotation as -q ) - so invert if needed.
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private void normalizeScrambleQuat(Static4D quat)
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{
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final float MAX_ERROR = 0.0001f;
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float x = quat.get0();
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float y = quat.get1();
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float z = quat.get2();
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float w = quat.get3();
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float diff;
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for(float legal: mParent.LEGAL_QUATS)
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{
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diff = x-legal;
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if( diff*diff<MAX_ERROR ) x = legal;
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diff = y-legal;
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if( diff*diff<MAX_ERROR ) y = legal;
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diff = z-legal;
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if( diff*diff<MAX_ERROR ) z = legal;
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diff = w-legal;
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if( diff*diff<MAX_ERROR ) w = legal;
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}
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if( w<0 )
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{
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w = -w;
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z = -z;
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y = -y;
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x = -x;
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}
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else if( w==0 )
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{
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if( z<0 )
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{
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z = -z;
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y = -y;
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x = -x;
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}
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else if( z==0 )
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{
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if( y<0 )
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{
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y = -y;
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x = -x;
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}
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else if( y==0 )
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{
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if( x<0 )
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{
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x = -x;
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}
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}
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}
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}
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quat.set(x,y,z,w);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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94ad5a8f
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private void modifyCurrentPosition(Static4D quat)
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{
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float cubitCenterX = mCurrentPosition.get0();
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float cubitCenterY = mCurrentPosition.get1();
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float cubitCenterZ = mCurrentPosition.get2();
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Static4D cubitCenter = new Static4D(cubitCenterX, cubitCenterY, cubitCenterZ, 0);
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Static4D rotatedCenter = RubikSurfaceView.rotateVectorByQuat( cubitCenter, quat);
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float rotatedX = rotatedCenter.get0();
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float rotatedY = rotatedCenter.get1();
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float rotatedZ = rotatedCenter.get2();
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mCurrentPosition.set(rotatedX, rotatedY, rotatedZ);
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mParent.clampPos(mCurrentPosition);
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10a2e360
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computeRotationRow();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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e844c116
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Leszek Koltunski
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// cast current position on axis; use mStart and mStep to compute the rotation row for each axis.
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10a2e360
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private void computeRotationRow()
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{
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e844c116
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float tmp;
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Static3D axis;
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float x = mCurrentPosition.get0();
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float y = mCurrentPosition.get1();
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float z = mCurrentPosition.get2();
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for(int i=0; i<mNumAxis; i++)
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{
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axis = mParent.ROTATION_AXIS[i];
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tmp = x*axis.get0() + y*axis.get1() + z*axis.get2();
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66cbdd21
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mRotationRow[i] = (tmp-mParent.mStart)/mParent.mStep;
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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b32444ee
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Leszek Koltunski
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Cubit(RubikObject parent, MeshBase mesh, Static3D position)
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70b76549
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{
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float x = position.get0();
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float y = position.get1();
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float z = position.get2();
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Static3D vector = new Static3D(x,y,z);
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mParent = parent;
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mMesh = mesh;
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mOrigPosition = new Static3D(x,y,z);
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mQuatScramble = new Static4D(0,0,0,1);
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mRotationAngle = new Dynamic1D();
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mRotationAxis = new Static3D(1,0,0);
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mCurrentPosition = position;
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mRotateEffect = new MatrixEffectRotate(mRotationAngle, mRotationAxis, matrCenter);
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mNumAxis = mParent.ROTATION_AXIS.length;
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66cbdd21
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mRotationRow = new float[mNumAxis];
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computeRotationRow();
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mEffect = new DistortedEffects();
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mEffect.apply(mParent.mSinkEffect);
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mEffect.apply( new MatrixEffectMove(vector) );
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mEffect.apply( new MatrixEffectQuaternion(mQuatScramble, matrCenter));
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mEffect.apply(mRotateEffect);
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mEffect.apply(mParent.mQuatAEffect);
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mEffect.apply(mParent.mQuatCEffect);
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mEffect.apply(mParent.mScaleEffect);
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b32444ee
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Leszek Koltunski
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mNode = new DistortedNode(mParent.mTexture,mEffect,mMesh);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void savePreferences(SharedPreferences.Editor editor)
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{
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String number = mOrigPosition.get0()+"_"+mOrigPosition.get1()+"_"+mOrigPosition.get2();
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editor.putFloat("qx_"+number, mQuatScramble.get0());
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editor.putFloat("qy_"+number, mQuatScramble.get1());
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editor.putFloat("qz_"+number, mQuatScramble.get2());
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editor.putFloat("qw_"+number, mQuatScramble.get3());
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void restorePreferences(SharedPreferences preferences)
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{
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String number = mOrigPosition.get0()+"_"+mOrigPosition.get1()+"_"+mOrigPosition.get2();
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float qx = preferences.getFloat("qx_"+number, 0.0f);
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float qy = preferences.getFloat("qy_"+number, 0.0f);
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float qz = preferences.getFloat("qz_"+number, 0.0f);
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float qw = preferences.getFloat("qw_"+number, 1.0f);
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mQuatScramble.set(qx,qy,qz,qw);
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94ad5a8f
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Leszek Koltunski
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modifyCurrentPosition(mQuatScramble);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// return if the Cubit, when rotated with its own mQuatScramble, would have looked any different
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// then if it were rotated by quaternion 'quat'.
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// No it is not so simple as the quats need to be the same - imagine a 4x4x4 cube where the two
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// middle squares get interchanged. No visible difference!
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//
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// So: this is true iff the cubit
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// a) is a corner or edge and the quaternions are the same
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// b) is inside one of the faces and after rotations by both quats it ends up on the same face.
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boolean thereIsNoVisibleDifference(Static4D quat)
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{
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if ( mQuatScramble.get0()==quat.get0() &&
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mQuatScramble.get1()==quat.get1() &&
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mQuatScramble.get2()==quat.get2() &&
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mQuatScramble.get3()==quat.get3() ) return true;
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int belongsToHowManyFaces = 0;
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int size = mParent.getSize()-1;
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7437ebb3
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float row;
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final float MAX_ERROR = 0.01f;
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94ad5a8f
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for(int i=0; i<mNumAxis; i++)
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{
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7437ebb3
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row = mRotationRow[i];
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if( (row <MAX_ERROR && row >-MAX_ERROR) ||
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(row-size<MAX_ERROR && row-size>-MAX_ERROR) ) belongsToHowManyFaces++;
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94ad5a8f
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Leszek Koltunski
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}
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switch(belongsToHowManyFaces)
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{
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case 0 : return true ; // 'inside' cubit that does not lie on any face
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case 1 : // cubit that lies inside one of the faces
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float cubitCenterX = mCurrentPosition.get0();
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float cubitCenterY = mCurrentPosition.get1();
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float cubitCenterZ = mCurrentPosition.get2();
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Static4D cubitCenter = new Static4D(cubitCenterX, cubitCenterY, cubitCenterZ, 0);
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Static4D rotated1 = RubikSurfaceView.rotateVectorByQuat( cubitCenter, quat);
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Static4D rotated2 = RubikSurfaceView.rotateVectorByQuat( cubitCenter, mQuatScramble );
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7437ebb3
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float row1, row2, row3, row4;
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94ad5a8f
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float ax,ay,az;
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Static3D axis;
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float x1 = rotated1.get0();
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float y1 = rotated1.get1();
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float z1 = rotated1.get2();
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float x2 = rotated2.get0();
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float y2 = rotated2.get1();
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float z2 = rotated2.get2();
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for(int i=0; i<mNumAxis; i++)
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{
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axis = mParent.ROTATION_AXIS[i];
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ax = axis.get0();
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ay = axis.get1();
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az = axis.get2();
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7437ebb3
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row1 = ((x1*ax + y1*ay + z1*az) - mParent.mStart) / mParent.mStep;
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row2 = ((x2*ax + y2*ay + z2*az) - mParent.mStart) / mParent.mStep;
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row3 = row1 - size;
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row4 = row2 - size;
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if( (row1<MAX_ERROR && row1>-MAX_ERROR && row2<MAX_ERROR && row2>-MAX_ERROR) ||
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(row3<MAX_ERROR && row3>-MAX_ERROR && row4<MAX_ERROR && row4>-MAX_ERROR) )
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{
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return true;
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}
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}
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return false;
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default: return false; // edge or corner
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}
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70b76549
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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300 |
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long finishRotationNow(EffectListener listener)
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{
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int pointNum = mRotationAngle.getNumPoints();
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if( pointNum>=1 )
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{
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float startingAngle = mRotationAngle.getPoint(pointNum-1).get0();
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308 |
0e5ad27c
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int nearestAngleInDegrees = mParent.computeNearestAngle(startingAngle);
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309 |
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mParent.mRotationAngleStatic.set0(startingAngle);
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|
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mParent.mRotationAngleFinal.set0(nearestAngleInDegrees);
|
311 |
|
|
mParent.mRotationAngleMiddle.set0( nearestAngleInDegrees + (nearestAngleInDegrees-startingAngle)*0.2f );
|
312 |
|
|
return setUpCallback(listener);
|
313 |
|
|
}
|
314 |
|
|
|
315 |
|
|
return 0;
|
316 |
|
|
}
|
317 |
|
|
|
318 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
319 |
|
|
|
320 |
efef689c
|
Leszek Koltunski
|
Static4D returnRotationQuat(int axis)
|
321 |
70b76549
|
Leszek Koltunski
|
{
|
322 |
|
|
int pointNum = mRotationAngle.getNumPoints();
|
323 |
|
|
|
324 |
|
|
if( pointNum>=1 )
|
325 |
|
|
{
|
326 |
efef689c
|
Leszek Koltunski
|
float axisX = mParent.ROTATION_AXIS[axis].get0();
|
327 |
|
|
float axisY = mParent.ROTATION_AXIS[axis].get1();
|
328 |
|
|
float axisZ = mParent.ROTATION_AXIS[axis].get2();
|
329 |
|
|
|
330 |
70b76549
|
Leszek Koltunski
|
float startingAngle = mRotationAngle.getPoint(pointNum-1).get0();
|
331 |
0e5ad27c
|
Leszek Koltunski
|
int nearestAngleInDegrees = mParent.computeNearestAngle(startingAngle);
|
332 |
70b76549
|
Leszek Koltunski
|
double nearestAngleInRadians = nearestAngleInDegrees*Math.PI/180;
|
333 |
|
|
float sinA =-(float)Math.sin(nearestAngleInRadians*0.5);
|
334 |
|
|
float cosA = (float)Math.cos(nearestAngleInRadians*0.5);
|
335 |
efef689c
|
Leszek Koltunski
|
return new Static4D( axisX*sinA, axisY*sinA, axisZ*sinA, cosA);
|
336 |
70b76549
|
Leszek Koltunski
|
}
|
337 |
|
|
|
338 |
|
|
return null;
|
339 |
|
|
}
|
340 |
|
|
|
341 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
342 |
|
|
|
343 |
|
|
void removeRotationNow(Static4D quat)
|
344 |
|
|
{
|
345 |
|
|
mRotationAngle.removeAll();
|
346 |
|
|
mQuatScramble.set(RubikSurfaceView.quatMultiply(quat,mQuatScramble));
|
347 |
|
|
normalizeScrambleQuat( mQuatScramble );
|
348 |
94ad5a8f
|
Leszek Koltunski
|
modifyCurrentPosition(quat);
|
349 |
70b76549
|
Leszek Koltunski
|
}
|
350 |
|
|
|
351 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
352 |
|
|
// all DistortedTextures, DistortedNodes, DistortedFramebuffers, DistortedScreens and all types of
|
353 |
|
|
// Meshes HAVE TO be markedForDeletion when they are no longer needed- otherwise we have a major
|
354 |
|
|
// memory leak.
|
355 |
|
|
|
356 |
|
|
void releaseResources()
|
357 |
|
|
{
|
358 |
b32444ee
|
Leszek Koltunski
|
mMesh.markForDeletion();
|
359 |
70b76549
|
Leszek Koltunski
|
mNode.markForDeletion();
|
360 |
|
|
}
|
361 |
|
|
|
362 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
363 |
|
|
|
364 |
|
|
void solve()
|
365 |
|
|
{
|
366 |
|
|
mQuatScramble.set(0,0,0,1);
|
367 |
|
|
mCurrentPosition.set(mOrigPosition);
|
368 |
0e7bcfb1
|
Leszek Koltunski
|
computeRotationRow();
|
369 |
70b76549
|
Leszek Koltunski
|
}
|
370 |
|
|
|
371 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
372 |
|
|
|
373 |
efef689c
|
Leszek Koltunski
|
void beginNewRotation(int axis)
|
374 |
70b76549
|
Leszek Koltunski
|
{
|
375 |
efef689c
|
Leszek Koltunski
|
mRotationAxis.set( mParent.ROTATION_AXIS[axis] );
|
376 |
70b76549
|
Leszek Koltunski
|
mRotationAngle.add(mParent.mRotationAngleStatic);
|
377 |
|
|
}
|
378 |
|
|
|
379 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
380 |
|
|
|
381 |
efef689c
|
Leszek Koltunski
|
void addNewRotation(int axis, long durationMillis, int angle)
|
382 |
70b76549
|
Leszek Koltunski
|
{
|
383 |
efef689c
|
Leszek Koltunski
|
mRotationAxis.set( mParent.ROTATION_AXIS[axis] );
|
384 |
70b76549
|
Leszek Koltunski
|
mRotationAngle.setDuration(durationMillis);
|
385 |
|
|
mRotationAngle.resetToBeginning();
|
386 |
|
|
mRotationAngle.add(new Static1D(0));
|
387 |
|
|
mRotationAngle.add(new Static1D(angle));
|
388 |
|
|
}
|
389 |
|
|
|
390 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
391 |
|
|
|
392 |
|
|
long setUpCallback(EffectListener listener)
|
393 |
|
|
{
|
394 |
|
|
mRotateEffect.notifyWhenFinished(listener);
|
395 |
|
|
return mRotateEffect.getID();
|
396 |
|
|
}
|
397 |
1f9772f3
|
Leszek Koltunski
|
|
398 |
9621255f
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
399 |
|
|
|
400 |
|
|
float getDistSquared(float[] point)
|
401 |
|
|
{
|
402 |
|
|
float dx = mCurrentPosition.get0() - point[0];
|
403 |
|
|
float dy = mCurrentPosition.get1() - point[1];
|
404 |
|
|
float dz = mCurrentPosition.get2() - point[2];
|
405 |
|
|
|
406 |
|
|
return dx*dx + dy*dy + dz*dz;
|
407 |
|
|
}
|
408 |
|
|
|
409 |
a304ee64
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
410 |
|
|
|
411 |
|
|
int getColorIndex(int face)
|
412 |
|
|
{
|
413 |
|
|
Static4D texMap = mMesh.getTextureMap(face);
|
414 |
|
|
return (int)(texMap.get0() / texMap.get2());
|
415 |
|
|
}
|
416 |
|
|
|
417 |
1f9772f3
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
418 |
|
|
|
419 |
|
|
MeshBase getMesh()
|
420 |
|
|
{
|
421 |
|
|
return mMesh;
|
422 |
|
|
}
|
423 |
70b76549
|
Leszek Koltunski
|
}
|