Revision 37a25788
Added by Leszek Koltunski about 4 years ago
| src/main/java/org/distorted/object/RubikObjectMovement.java | ||
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package org.distorted.object; |
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import org.distorted.library.type.Static2D; |
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import org.distorted.library.type.Static3D; |
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import org.distorted.library.type.Static4D; |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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public abstract class RubikObjectMovement |
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{
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float[] mPoint, mCamera, mTouch;
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float[] mTouch; |
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int mRotationVect, mLastTouchedAxis; |
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private float[] mDiff; |
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private float[] mPoint, mCamera, mDiff;
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private int mLastTouchedLR; |
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private int mNumAxis, mNumFacesPerAxis; |
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private int[] mPossible; |
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private float mDistanceCenterFace; |
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private Static3D[] mAxis; |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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abstract boolean faceIsVisible(int axis, int lr); |
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abstract void castTouchPointOntoFace(int axis, int lr, float[] output); |
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abstract boolean isInsideFace(float[] point); |
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abstract void fillPossibleRotations(int axis, int[] output); |
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abstract float fillUpRotationVectAndOffset(float[] vect, int[] possible); |
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abstract float returnAngle(float[] vect, int[] possible); |
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abstract void fillPossibleRotations(int axis, int[] output); |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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RubikObjectMovement(int numAxis, int numFacesPerAxis)
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RubikObjectMovement(Static3D[] axis, int numFacesPerAxis, float distance)
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{
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mPoint = new float[3]; |
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mCamera= new float[3]; |
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mDiff = new float[3]; |
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mTouch = new float[3]; |
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mNumAxis = numAxis; |
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mAxis = axis; |
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mNumAxis = mAxis.length; |
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mNumFacesPerAxis = numFacesPerAxis; |
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mDistanceCenterFace = distance; |
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mPossible = new int[mNumAxis-1]; |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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private boolean faceIsVisible(Static3D axis, int lr) |
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{
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float castCameraOnAxis = mCamera[0]*axis.get0() + mCamera[1]*axis.get1() + mCamera[2]*axis.get2(); |
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return (2*lr-1)*castCameraOnAxis > mDistanceCenterFace; |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// given precomputed mCamera and mPoint, respectively camera and touch point positions in ScreenSpace, |
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// compute point 'output[]' which: |
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// 1) lies on a face of the Object, i.e. surface defined by (axis, distance from (0,0,0)) [and this |
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// distance is +-mDistanceCenterFace, depending if it is the face on the left or the right end of |
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// the axis] (lr=0 or 1, so (2lr-1)*mDistanceCenterFace) |
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// 2) is co-linear with mCamera and mPoint |
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// |
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// output = camera + alpha*(point-camera), where alpha = [dist-axis*camera] / [axis*(point-camera)] |
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private void castTouchPointOntoFace(Static3D axis, int lr, float[] output) |
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{
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float d0 = mPoint[0]-mCamera[0]; |
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float d1 = mPoint[1]-mCamera[1]; |
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float d2 = mPoint[2]-mCamera[2]; |
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float a0 = axis.get0(); |
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float a1 = axis.get1(); |
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float a2 = axis.get2(); |
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float denom = a0*d0 + a1*d1 + a2*d2; |
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if( denom != 0.0f ) |
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{
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float axisCam = a0*mCamera[0] + a1*mCamera[1] + a2*mCamera[2]; |
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float distance = (2*lr-1)*mDistanceCenterFace; |
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float alpha = (distance-axisCam)/denom; |
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output[0] = mCamera[0] + d0*alpha; |
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output[1] = mCamera[1] + d1*alpha; |
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output[2] = mCamera[2] + d2*alpha; |
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} |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// PUBLIC API |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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{
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for( mLastTouchedLR=0; mLastTouchedLR<mNumFacesPerAxis; mLastTouchedLR++) |
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{
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if( faceIsVisible(mLastTouchedAxis, mLastTouchedLR) )
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if( faceIsVisible(mAxis[mLastTouchedAxis], mLastTouchedLR) )
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{
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castTouchPointOntoFace(mLastTouchedAxis, mLastTouchedLR, mTouch);
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castTouchPointOntoFace(mAxis[mLastTouchedAxis], mLastTouchedLR, mTouch);
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if( isInsideFace(mTouch) ) |
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{
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mPoint[1] = rotatedTouchPoint.get1()/RubikObject.OBJECT_SCREEN_RATIO; |
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mPoint[2] = rotatedTouchPoint.get2()/RubikObject.OBJECT_SCREEN_RATIO; |
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castTouchPointOntoFace(mLastTouchedAxis, mLastTouchedLR, mDiff);
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castTouchPointOntoFace(mAxis[mLastTouchedAxis], mLastTouchedLR, mDiff);
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mDiff[0] -= mTouch[0]; |
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mDiff[1] -= mTouch[1]; |
Also available in: Unified diff
Progress with object Movement.