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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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0c52af30
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Leszek Koltunski
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// //
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Leszek Koltunski
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// Magic Cube is free software: you can redistribute it and/or modify //
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0c52af30
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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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// 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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Leszek Koltunski
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// along with Magic Cube. If not, see <http://www.gnu.org/licenses/>. //
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.main;
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import android.app.ActivityManager;
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import android.content.Context;
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import android.content.pm.ConfigurationInfo;
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import android.opengl.GLSurfaceView;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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import org.distorted.library.type.Static2D;
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import org.distorted.library.type.Static3D;
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Leszek Koltunski
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import org.distorted.library.type.Static4D;
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import org.distorted.objects.RubikObject;
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import org.distorted.objects.RubikObjectMovement;
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import org.distorted.solvers.SolverMain;
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import org.distorted.states.RubikState;
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import org.distorted.states.RubikStateSolver;
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import org.distorted.states.RubikStateSolving;
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public class RubikSurfaceView extends GLSurfaceView
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{
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public static final int MODE_ROTATE = 0;
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public static final int MODE_DRAG = 1;
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public static final int MODE_REPLACE = 2;
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// Moving the finger from the middle of the vertical screen to the right edge will rotate a
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// given face by SWIPING_SENSITIVITY/2 degrees.
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private final static int SWIPING_SENSITIVITY = 240;
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// Moving the finger by 1/15 the distance of min(scrWidth,scrHeight) will start a Rotation.
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private final static int ROTATION_SENSITIVITY = 15;
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// Every 1/12 the distance of min(scrWidth,scrHeight) the direction of cube rotation will reset.
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private final static int DIRECTION_SENSITIVITY= 12;
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// Where did we get this sqrt(3)/2 ? From the (default, i.e. 60 degrees - see InternalOutputSurface!)
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// FOV of the projection matrix of the Node onto the Screen.
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// Take a look how the CAMERA_POINT is used in onTouchEvent - (x,y) there are expressed in sort of
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// 'half-NDC' coordinates i.e. they range from +0.5 to -0.5; thus CAMERA_POINT also needs to be
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// in 'half-NDC'. Since in this coordinate system the height of the screen is equal to 1, then the
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// Z-distance from the center of the object to the camera is equal to (scrHeight/2)/tan(FOV/2) =
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// 0.5/tan(30) = sqrt(3)/2.
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// Why is the Z-distance between the camera and the object equal to (scrHeight/2)/tan(FOV/2)?
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// Because of the way the View part of the ModelView matrix is constructed in EffectQueueMatrix.send().
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private final Static4D CAMERA_POINT = new Static4D(0, 0, (float)Math.sqrt(3)*0.5f, 0);
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private RubikRenderer mRenderer;
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private RubikPostRender mPostRender;
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private RubikObjectMovement mMovement;
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private boolean mDragging, mBeginningRotation, mContinuingRotation;
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private int mScreenWidth, mScreenHeight, mScreenMin;
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private float mX, mY;
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private float mStartRotX, mStartRotY;
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private float mAxisX, mAxisY;
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private float mRotationFactor;
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private int mLastCubitColor, mLastCubitFace, mLastCubit;
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private static Static4D mQuatCurrent = new Static4D(0,0,0,1);
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private static Static4D mQuatAccumulated= new Static4D(-0.25189602f,0.3546389f,0.009657208f,0.90038127f);
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private static Static4D mTempCurrent = new Static4D(0,0,0,1);
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private static Static4D mTempAccumulated= new Static4D(0,0,0,1);
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void setScreenSize(int width, int height)
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{
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mScreenWidth = width;
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mScreenHeight= height;
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mScreenMin = Math.min(width, height);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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boolean isVertical()
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{
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return mScreenHeight>mScreenWidth;
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}
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RubikRenderer getRenderer()
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{
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return mRenderer;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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RubikPostRender getPostRender()
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{
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return mPostRender;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void setQuatAccumulated()
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{
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mQuatAccumulated.set(mTempAccumulated);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void setQuatCurrent()
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{
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mQuatCurrent.set(mTempCurrent);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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Static4D getQuatAccumulated()
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{
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return mQuatAccumulated;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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Static4D getQuatCurrent()
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{
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return mQuatCurrent;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void setMovement(RubikObjectMovement movement)
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{
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mMovement = movement;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private Static4D quatFromDrag(float dragX, float dragY)
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{
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float axisX = dragY; // inverted X and Y - rotation axis is perpendicular to (dragX,dragY)
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float axisY = dragX; // Why not (-dragY, dragX) ? because Y axis is also inverted!
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float axisZ = 0;
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float axisL = (float)Math.sqrt(axisX*axisX + axisY*axisY + axisZ*axisZ);
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if( axisL>0 )
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{
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axisX /= axisL;
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axisY /= axisL;
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axisZ /= axisL;
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float ratio = axisL;
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ratio = ratio - (int)ratio; // the cos() is only valid in (0,Pi)
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float cosA = (float)Math.cos(Math.PI*ratio);
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float sinA = (float)Math.sqrt(1-cosA*cosA);
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return new Static4D(axisX*sinA, axisY*sinA, axisZ*sinA, cosA);
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}
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return new Static4D(0f, 0f, 0f, 1f);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private void setUpDragOrRotate(boolean down, float x, float y)
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{
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int mode = RubikState.getMode();
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if( mode==MODE_DRAG )
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{
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mDragging = true;
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mBeginningRotation = false;
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mContinuingRotation = false;
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}
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else
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{
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a6d3b158
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Leszek Koltunski
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Static4D touchPoint1 = new Static4D(x, y, 0, 0);
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Static4D rotatedTouchPoint1= rotateVectorByInvertedQuat(touchPoint1, mQuatAccumulated);
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Static4D rotatedCamera= rotateVectorByInvertedQuat(CAMERA_POINT, mQuatAccumulated);
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if( mMovement!=null && mMovement.faceTouched(rotatedTouchPoint1,rotatedCamera) )
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{
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mDragging = false;
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mContinuingRotation = false;
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if( mode==MODE_ROTATE )
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{
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mBeginningRotation= mPostRender.canRotate();
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}
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else if( mode==MODE_REPLACE )
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{
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mBeginningRotation= false;
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if( down )
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{
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RubikStateSolver solver = (RubikStateSolver) RubikState.SVER.getStateClass();
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mLastCubitFace = mMovement.getTouchedFace();
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float[] point = mMovement.getTouchedPoint3D();
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int color = solver.getCurrentColor();
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RubikObject object = mPostRender.getObject();
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Leszek Koltunski
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mLastCubit = object.getCubit(point);
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mPostRender.setTextureMap( mLastCubit, mLastCubitFace, color );
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mLastCubitColor = SolverMain.cubitIsLocked(object.getObjectList(), object.getSize(), mLastCubit);
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}
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}
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a6d3b158
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Leszek Koltunski
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}
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else
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{
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a42e25a6
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Leszek Koltunski
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mDragging = true;
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a6d3b158
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Leszek Koltunski
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mBeginningRotation = false;
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mContinuingRotation = false;
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}
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12ad3fca
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Leszek Koltunski
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// cast the 3D axis we are currently rotating along to the 2D in-screen-surface axis
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private void computeCurrentAxis(Static3D axis)
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{
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Static4D axis4D = new Static4D(axis.get0(), axis.get1(), axis.get2(), 0);
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Static4D result = rotateVectorByQuat(axis4D, mQuatAccumulated);
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mAxisX =result.get0();
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mAxisY =result.get1();
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float len = (float)Math.sqrt(mAxisX*mAxisX + mAxisY*mAxisY);
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mAxisX /= len;
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mAxisY /= len;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private float continueRotation(float dx, float dy)
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{
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249 |
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float alpha = dx*mAxisX + dy*mAxisY;
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float x = dx - alpha*mAxisX;
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float y = dy - alpha*mAxisY;
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float len = (float)Math.sqrt(x*x + y*y);
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167ba2d6
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Leszek Koltunski
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// we have the length of 1D vector 'angle', now the direction:
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256 |
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float tmp = mAxisY==0 ? -mAxisX*y : mAxisY*x;
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Leszek Koltunski
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return (tmp>0 ? 1:-1)*len*mRotationFactor;
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259 |
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}
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0c52af30
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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262 |
47ba5ddc
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Leszek Koltunski
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// return quat1*quat2
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263 |
0c52af30
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Leszek Koltunski
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264 |
beb325a0
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Leszek Koltunski
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public static Static4D quatMultiply( Static4D quat1, Static4D quat2 )
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265 |
45686da2
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{
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266 |
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float qx = quat1.get0();
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float qy = quat1.get1();
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float qz = quat1.get2();
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float qw = quat1.get3();
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float rx = quat2.get0();
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float ry = quat2.get1();
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float rz = quat2.get2();
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float rw = quat2.get3();
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float tx = rw*qx - rz*qy + ry*qz + rx*qw;
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float ty = rw*qy + rz*qx + ry*qw - rx*qz;
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float tz = rw*qz + rz*qw - ry*qx + rx*qy;
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float tw = rw*qw - rz*qz - ry*qy - rx*qx;
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281 |
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return new Static4D(tx,ty,tz,tw);
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282 |
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}
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283 |
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///////////////////////////////////////////////////////////////////////////////////////////////////
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285 |
beb325a0
|
Leszek Koltunski
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// rotate 'vector' by quat ( i.e. return quat*vector*(quat^-1) )
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286 |
45686da2
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287 |
beb325a0
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public static Static4D rotateVectorByQuat(Static4D vector, Static4D quat)
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288 |
45686da2
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Leszek Koltunski
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{
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289 |
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float qx = quat.get0();
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290 |
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float qy = quat.get1();
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291 |
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float qz = quat.get2();
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292 |
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float qw = quat.get3();
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293 |
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294 |
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Static4D quatInverted= new Static4D(-qx,-qy,-qz,qw);
|
295 |
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Leszek Koltunski
|
Static4D tmp = quatMultiply(quat,vector);
|
296 |
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Leszek Koltunski
|
|
297 |
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Leszek Koltunski
|
return quatMultiply(tmp,quatInverted);
|
298 |
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Leszek Koltunski
|
}
|
299 |
|
|
|
300 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
301 |
beb325a0
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Leszek Koltunski
|
// rotate 'vector' by quat^(-1) ( i.e. return (quat^-1)*vector*quat )
|
302 |
0c52af30
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Leszek Koltunski
|
|
303 |
beb325a0
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Leszek Koltunski
|
public static Static4D rotateVectorByInvertedQuat(Static4D vector, Static4D quat)
|
304 |
0c52af30
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Leszek Koltunski
|
{
|
305 |
348dfe69
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Leszek Koltunski
|
float qx = quat.get0();
|
306 |
|
|
float qy = quat.get1();
|
307 |
|
|
float qz = quat.get2();
|
308 |
|
|
float qw = quat.get3();
|
309 |
0c52af30
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Leszek Koltunski
|
|
310 |
47ba5ddc
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Leszek Koltunski
|
Static4D quatInverted= new Static4D(-qx,-qy,-qz,qw);
|
311 |
beb325a0
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Leszek Koltunski
|
Static4D tmp = quatMultiply(quatInverted,vector);
|
312 |
0c52af30
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Leszek Koltunski
|
|
313 |
beb325a0
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Leszek Koltunski
|
return quatMultiply(tmp,quat);
|
314 |
0c52af30
|
Leszek Koltunski
|
}
|
315 |
|
|
|
316 |
47ba5ddc
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
317 |
|
|
// PUBLIC API
|
318 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
319 |
|
|
|
320 |
|
|
public RubikSurfaceView(Context context, AttributeSet attrs)
|
321 |
|
|
{
|
322 |
|
|
super(context,attrs);
|
323 |
|
|
|
324 |
|
|
if(!isInEditMode())
|
325 |
|
|
{
|
326 |
8becce57
|
Leszek Koltunski
|
mRenderer = new RubikRenderer(this);
|
327 |
|
|
mPostRender = new RubikPostRender(this);
|
328 |
47ba5ddc
|
Leszek Koltunski
|
|
329 |
|
|
final ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
|
330 |
|
|
final ConfigurationInfo configurationInfo = activityManager.getDeviceConfigurationInfo();
|
331 |
|
|
setEGLContextClientVersion( (configurationInfo.reqGlEsVersion>>16) >= 3 ? 3:2 );
|
332 |
|
|
setRenderer(mRenderer);
|
333 |
|
|
}
|
334 |
|
|
}
|
335 |
|
|
|
336 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
337 |
|
|
|
338 |
|
|
@Override
|
339 |
|
|
public boolean onTouchEvent(MotionEvent event)
|
340 |
|
|
{
|
341 |
|
|
int action = event.getAction();
|
342 |
775e675d
|
Leszek Koltunski
|
float x = (event.getX() - mScreenWidth*0.5f)/mScreenMin;
|
343 |
|
|
float y = (mScreenHeight*0.5f -event.getY())/mScreenMin;
|
344 |
47ba5ddc
|
Leszek Koltunski
|
|
345 |
|
|
switch(action)
|
346 |
|
|
{
|
347 |
|
|
case MotionEvent.ACTION_DOWN: mX = x;
|
348 |
|
|
mY = y;
|
349 |
9621255f
|
Leszek Koltunski
|
setUpDragOrRotate(true,x,y);
|
350 |
47ba5ddc
|
Leszek Koltunski
|
break;
|
351 |
517f9fb9
|
Leszek Koltunski
|
case MotionEvent.ACTION_MOVE: if( mBeginningRotation )
|
352 |
47ba5ddc
|
Leszek Koltunski
|
{
|
353 |
775e675d
|
Leszek Koltunski
|
if( (mX-x)*(mX-x)+(mY-y)*(mY-y) > 1.0f/(ROTATION_SENSITIVITY*ROTATION_SENSITIVITY) )
|
354 |
47ba5ddc
|
Leszek Koltunski
|
{
|
355 |
12ad3fca
|
Leszek Koltunski
|
mStartRotX = x;
|
356 |
|
|
mStartRotY = y;
|
357 |
|
|
|
358 |
86c73a69
|
Leszek Koltunski
|
Static4D touchPoint2 = new Static4D(x, y, 0, 0);
|
359 |
|
|
Static4D rotatedTouchPoint2= rotateVectorByInvertedQuat(touchPoint2, mQuatAccumulated);
|
360 |
|
|
|
361 |
e46e17fb
|
Leszek Koltunski
|
Static2D res = mMovement.newRotation(rotatedTouchPoint2);
|
362 |
8becce57
|
Leszek Koltunski
|
RubikObject object = mPostRender.getObject();
|
363 |
775e675d
|
Leszek Koltunski
|
|
364 |
e46e17fb
|
Leszek Koltunski
|
int axis = (int)res.get0();
|
365 |
|
|
float offset = res.get1();
|
366 |
12ad3fca
|
Leszek Koltunski
|
computeCurrentAxis( object.getRotationAxis()[axis] );
|
367 |
e46e17fb
|
Leszek Koltunski
|
mRotationFactor = object.returnRotationFactor(offset);
|
368 |
12ad3fca
|
Leszek Koltunski
|
|
369 |
9621255f
|
Leszek Koltunski
|
object.beginNewRotation( axis, (int)(object.returnMultiplier()*offset) );
|
370 |
775e675d
|
Leszek Koltunski
|
|
371 |
0333d81e
|
Leszek Koltunski
|
if( RubikState.getCurrentState()==RubikState.SOLV )
|
372 |
|
|
{
|
373 |
|
|
RubikStateSolving solving = (RubikStateSolving)RubikState.SOLV.getStateClass();
|
374 |
|
|
solving.startCounting( (RubikActivity)getContext() );
|
375 |
|
|
}
|
376 |
|
|
|
377 |
47ba5ddc
|
Leszek Koltunski
|
mBeginningRotation = false;
|
378 |
|
|
mContinuingRotation= true;
|
379 |
|
|
}
|
380 |
|
|
}
|
381 |
|
|
else if( mContinuingRotation )
|
382 |
|
|
{
|
383 |
12ad3fca
|
Leszek Koltunski
|
float angle = continueRotation(x-mStartRotX,y-mStartRotY);
|
384 |
8becce57
|
Leszek Koltunski
|
mPostRender.getObject().continueRotation(SWIPING_SENSITIVITY*angle);
|
385 |
47ba5ddc
|
Leszek Koltunski
|
}
|
386 |
bef47287
|
Leszek Koltunski
|
else if( mDragging )
|
387 |
517f9fb9
|
Leszek Koltunski
|
{
|
388 |
|
|
mTempCurrent.set(quatFromDrag(mX-x,y-mY));
|
389 |
8becce57
|
Leszek Koltunski
|
mPostRender.setQuatCurrentOnNextRender();
|
390 |
517f9fb9
|
Leszek Koltunski
|
|
391 |
|
|
if( (mX-x)*(mX-x) + (mY-y)*(mY-y) > 1.0f/(DIRECTION_SENSITIVITY*DIRECTION_SENSITIVITY) )
|
392 |
|
|
{
|
393 |
|
|
mX = x;
|
394 |
|
|
mY = y;
|
395 |
|
|
mTempAccumulated.set(quatMultiply(mQuatCurrent, mQuatAccumulated));
|
396 |
|
|
mTempCurrent.set(0f, 0f, 0f, 1f);
|
397 |
8becce57
|
Leszek Koltunski
|
mPostRender.setQuatCurrentOnNextRender();
|
398 |
|
|
mPostRender.setQuatAccumulatedOnNextRender();
|
399 |
517f9fb9
|
Leszek Koltunski
|
}
|
400 |
|
|
}
|
401 |
a42e25a6
|
Leszek Koltunski
|
else
|
402 |
bef47287
|
Leszek Koltunski
|
{
|
403 |
9621255f
|
Leszek Koltunski
|
setUpDragOrRotate(false,x,y);
|
404 |
bef47287
|
Leszek Koltunski
|
}
|
405 |
47ba5ddc
|
Leszek Koltunski
|
break;
|
406 |
|
|
case MotionEvent.ACTION_UP : if( mDragging )
|
407 |
|
|
{
|
408 |
|
|
mTempAccumulated.set(quatMultiply(mQuatCurrent, mQuatAccumulated));
|
409 |
|
|
mTempCurrent.set(0f, 0f, 0f, 1f);
|
410 |
8becce57
|
Leszek Koltunski
|
mPostRender.setQuatCurrentOnNextRender();
|
411 |
|
|
mPostRender.setQuatAccumulatedOnNextRender();
|
412 |
47ba5ddc
|
Leszek Koltunski
|
}
|
413 |
|
|
|
414 |
|
|
if( mContinuingRotation )
|
415 |
|
|
{
|
416 |
8becce57
|
Leszek Koltunski
|
mPostRender.finishRotation();
|
417 |
47ba5ddc
|
Leszek Koltunski
|
}
|
418 |
46a961fd
|
Leszek Koltunski
|
if( mLastCubitColor>=0 )
|
419 |
|
|
{
|
420 |
|
|
mPostRender.setTextureMap( mLastCubit, mLastCubitFace, mLastCubitColor );
|
421 |
|
|
}
|
422 |
47ba5ddc
|
Leszek Koltunski
|
break;
|
423 |
|
|
}
|
424 |
|
|
|
425 |
|
|
return true;
|
426 |
|
|
}
|
427 |
0c52af30
|
Leszek Koltunski
|
}
|