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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2024 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 proprietary software licensed under an EULA which you should have received //
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// along with the code. If not, check https://distorted.org/magic/License-Magic-Cube.html //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.objectlib.touchcontrol;
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import static org.distorted.objectlib.main.TwistyObject.SQ2;
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import org.distorted.library.helpers.QuatHelper;
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import org.distorted.library.type.Static3D;
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import org.distorted.library.type.Static4D;
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import org.distorted.objectlib.main.TwistyObject;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Barrel-shaped objects: map the 2D swipes of user's fingers to 3D rotations
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public class TouchControlBarrel extends TouchControl
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{
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private static final float MIN_LEN = 0.35f;
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private static final float[] mTmp = new float[4];
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private final Static3D[] mRotAxis;
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private final float[] mPoint, mCamera, mTouch;
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private final int[] mEnabledRotAxis;
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private final int[][][] mEnabled;
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private final float[] mMove2D;
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private final float[][] mCastedRotAxis;
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private float[][] mTouchBorders;
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private float mRadius, mHeight;
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private float mX, mY, mZ;
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private static final float X = (float)Math.sqrt( (2-SQ2)/(6+SQ2) );
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private static final float Y = (float)Math.sqrt( (2+SQ2)/(6+SQ2) );
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public static final Static3D[] FACE_AXIS = new Static3D[]
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{
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new Static3D( X, Y, Y),
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new Static3D( X,-Y, Y),
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new Static3D( Y, Y, X),
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new Static3D( Y,-Y, X),
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new Static3D( Y, Y,-X),
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new Static3D( Y,-Y,-X),
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new Static3D( X, Y,-Y),
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new Static3D( X,-Y,-Y),
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new Static3D(-X, Y,-Y),
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new Static3D(-X,-Y,-Y),
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new Static3D(-Y, Y,-X),
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new Static3D(-Y,-Y,-X),
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new Static3D(-Y, Y, X),
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new Static3D(-Y,-Y, X),
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new Static3D(-X, Y, Y),
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new Static3D(-X,-Y, Y),
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};
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public TouchControlBarrel(TwistyObject object)
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{
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super(object);
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int[] numLayers = object.getNumLayers();
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float[][] cuts = object.getCuts(numLayers);
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boolean[][] rotatable = object.getLayerRotatable(numLayers);
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float size = object.getSize();
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mRotAxis = object.getRotationAxis();
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mEnabled = object.getEnabled();
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mMove2D = new float[2];
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mPoint = new float[3];
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mCamera= new float[3];
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mTouch = new float[3];
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int numRotAxis = mRotAxis.length;
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mEnabledRotAxis= new int[numRotAxis+1];
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mCastedRotAxis = new float[numRotAxis][2];
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mGhostAxisEnabled = -1;
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computeBorders(cuts,rotatable,size);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private float[] computeBorder(float[] cuts, boolean[] rotatable, float size)
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{
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if( cuts==null ) return null;
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int len = cuts.length;
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float[] border = new float[len];
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for(int i=0; i<len; i++)
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{
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if( !rotatable[i] )
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{
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border[i] = i>0 ? border[i-1] : -Float.MAX_VALUE;
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}
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else
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{
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if( rotatable[i+1] ) border[i] = cuts[i]/size;
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else
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{
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int found = -1;
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for(int j=i+2; j<=len; j++)
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{
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if( rotatable[j] )
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{
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found=j;
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break;
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}
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}
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border[i] = found>0 ? (cuts[i]+cuts[found-1])/(2*size) : Float.MAX_VALUE;
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}
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}
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}
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return border;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// size, not numLayers (see Master Skewb where size!=numLayers) - also cuboids.
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void computeBorders(float[][] cuts, boolean[][] rotatable, float size)
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{
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int numCuts = cuts.length;
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mTouchBorders = new float[numCuts][];
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for(int axis=0; axis<numCuts; axis++)
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{
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mTouchBorders[axis] = computeBorder(cuts[axis],rotatable[axis],size);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int computeRowFromOffset(int axisIndex, float offset)
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{
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float[] borders = mTouchBorders[axisIndex];
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if( borders==null ) return 0;
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int len = borders.length;
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for(int i=0; i<len; i++)
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{
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if( offset<borders[i] ) return i;
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}
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return len;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private float computeOffset(int rotIndex)
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{
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Static3D axis = mRotAxis[rotIndex];
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return mX*axis.get0() + mY*axis.get1() + mZ*axis.get2();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private void computeEnabledAxis()
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{
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if( mGhostAxisEnabled<0 )
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{
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int face = 0;//returnTouchedFace();
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int part = 0;//returnTouchedPart();
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int num = mEnabled[face][0].length;
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mEnabledRotAxis[0] = num;
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System.arraycopy(mEnabled[face][part], 0, mEnabledRotAxis, 1, num);
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}
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else
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{
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mEnabledRotAxis[0] = 1; // if in 'ghost' mode, only one axis is enabled.
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mEnabledRotAxis[1] = mGhostAxisEnabled;
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private boolean crossesPipe(float radius, float vx, float vy, float vz)
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{
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return false;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private boolean crossesPlane(float nx, float ny, float nz, float d, float vx, float vy, float vz)
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{
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return false;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public boolean axisAndFaceAgree(int axisIndex)
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{
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return false;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public int getTouchedCubitFace()
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{
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return 0;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public float[] getTouchedPuzzleCenter()
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{
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return null;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public int getTouchedCubit()
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{
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return 0;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// simply cast the appropriate rotational axis of the object to the screen surface.
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public void getCastedRotAxis(float[] output, Static4D quat, int axisIndex)
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{
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Static3D a = mRotAxis[axisIndex];
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getCastedRotAxis(output,quat,a.get0(),a.get1(),a.get2(),0);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public boolean objectTouched(Static4D rotatedTouchPoint, Static4D rotatedCamera)
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{
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mPoint[0] = rotatedTouchPoint.get0()/mObjectRatio;
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mPoint[1] = rotatedTouchPoint.get1()/mObjectRatio;
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mPoint[2] = rotatedTouchPoint.get2()/mObjectRatio;
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mCamera[0] = rotatedCamera.get0()/mObjectRatio;
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mCamera[1] = rotatedCamera.get1()/mObjectRatio;
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mCamera[2] = rotatedCamera.get2()/mObjectRatio;
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float vx = mCamera[0]-mPoint[0];
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float vy = mCamera[1]-mPoint[1];
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float vz = mCamera[2]-mPoint[2];
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float x1=0,y1=0,z1=0;
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float x2=0,y2=0,z2=0;
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float x3=0,y3=0,z3=0;
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float len1=Float.MAX_VALUE;
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float len2=Float.MAX_VALUE;
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float len3=Float.MAX_VALUE;
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if( crossesPipe(mRadius,vx,vy,vz) )
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{
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x1 = mX;
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y1 = mY;
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z1 = mZ;
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float dx = mX-mCamera[0];
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float dy = mY-mCamera[1];
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float dz = mZ-mCamera[2];
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len1 = dx*dx + dy*dy + dz*dz;
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}
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if( crossesPlane(0,1,0,mHeight,vx,vy,vz) )
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{
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x2 = mX;
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y2 = mY;
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z2 = mZ;
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float dx = mX-mCamera[0];
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float dy = mY-mCamera[1];
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float dz = mZ-mCamera[2];
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len2 = dx*dx + dy*dy + dz*dz;
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}
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if( crossesPlane(0,-1,0,mHeight,vx,vy,vz) )
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{
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x3 = mX;
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y3 = mY;
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z3 = mZ;
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float dx = mX-mCamera[0];
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float dy = mY-mCamera[1];
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float dz = mZ-mCamera[2];
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len3 = dx*dx + dy*dy + dz*dz;
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}
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if( len1<len2 && len1<len3 )
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{
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mX = x1;
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mY = y1;
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mZ = z1;
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return true;
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}
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if( len2<len1 && len2<len3 )
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{
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mX = x2;
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mY = y2;
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mZ = z2;
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return true;
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}
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if( len3<len1 && len3<len2 )
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{
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mX = x3;
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mY = y3;
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mZ = z3;
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return true;
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}
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return false;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void newRotation(int[] output, Static4D rotatedTouchPoint, Static4D quat)
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{
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computeEnabledAxis();
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mTouch[0] = rotatedTouchPoint.get0()/mObjectRatio;
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mTouch[1] = rotatedTouchPoint.get1()/mObjectRatio;
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mTouch[2] = rotatedTouchPoint.get2()/mObjectRatio;
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float x = mTouch[0]-mPoint[0];
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float y = mTouch[1]-mPoint[1];
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float z = mTouch[2]-mPoint[2];
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QuatHelper.rotateVectorByQuat(mTmp,x,y,z,0,quat);
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mMove2D[0] = mTmp[0];
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mMove2D[1] = mTmp[1];
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for(int i=1; i<=mEnabledRotAxis[0]; i++)
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{
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int enabled = mEnabledRotAxis[i];
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Static3D axis = mRotAxis[enabled];
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float[] vector = mCastedRotAxis[enabled];
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float bx = axis.get0();
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float by = axis.get1();
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float bz = axis.get2();
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QuatHelper.rotateVectorByQuat(mTmp,bx,by,bz,0,quat);
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float len = (float)Math.sqrt(mTmp[0]*mTmp[0] + mTmp[1]*mTmp[1]);
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if( len<MIN_LEN )
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{
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vector[0] = 1000f; // switch off the axis because when casted
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vector[1] = 1000f; // onto the screen it is too short
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}
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else
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{
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vector[0] = mTmp[0]/len;
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vector[1] = mTmp[1]/len;
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}
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}
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int rotIndex = computeRotationIndex( mCastedRotAxis, mMove2D, mEnabledRotAxis);
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float offset = computeOffset(rotIndex);
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int row = computeRowFromOffset(rotIndex,offset);
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output[0] = rotIndex;
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output[1] = row;
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}
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}
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