Revision 451c6c36
Added by Leszek Koltunski over 3 years ago
| src/main/java/org/distorted/objects/MovementMinx.java | ||
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| 72 | 72 |
} |
| 73 | 73 |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// TODO; approximation |
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// return angle (in radians) that the line connecting the center C of the pentagonal face and the |
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// first vertex of the pentagon makes with a vertical line coming upwards from the center C. |
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private float returnAngle(int face) |
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{
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switch(face) |
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{
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case 0: |
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case 2: |
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case 6: |
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case 7: return 0.0f; |
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case 1: |
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case 3: |
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case 4: |
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case 5: return (float)(36*Math.PI/180); |
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case 9: |
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case 10: return (float)(54*Math.PI/180); |
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case 8: |
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case 11: return (float)(18*Math.PI/180); |
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} |
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return 0.0f; |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// The pair (distance,angle) defines a point P in R^2 in polar coordinate system. Let V be the vector |
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// from the center of the coordinate system to P. |
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// Let P' be the point defined by polar (distance,angle+PI/2). Let Lh be the half-line starting at |
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// P' and going in the direction of V. |
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// Return true iff point 'point' lies on the left of Lh, i.e. when we rotate (using the center of |
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// the coordinate system as the center of rotation) 'point' and Lh in such a way that Lh points |
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// directly upwards, is 'point' on the left or the right of it? |
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private boolean isOnTheLeft(float[] point, float distance, float angle) |
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{
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float sin = (float)Math.sin(angle); |
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float cos = (float)Math.cos(angle); |
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float vx = point[0] + sin*distance; |
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float vy = point[1] - cos*distance; |
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return vx*sin < vy*cos; |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// Return 1,2,3,4,5 - the vertex of the pentagon to which point 'point' is the closest, if the |
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// 'point' is inside the pentagon - or 0 otherwise. |
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// The 'first' vertex is the one we meet the first when we rotate clockwise starting from 12:00. |
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// This vertex makes angle 'returnAngle()' with the line coming out upwards from the center of the |
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// pentagon. |
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// Distance from the center to a vertex of the pentagon = 1/(6*COS54) |
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private int returnPartOfThePentagon(float[] point, int face) |
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{
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float angle = returnAngle(face); |
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float A = (float)(Math.PI/5); |
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for(int i=0; i<5; i++) |
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{
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if( isOnTheLeft(point, DIST2D, (9-2*i)*A-angle) ) return 0; |
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} |
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if( isOnTheLeft(point, 0, 2.5f*A-angle) ) |
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{
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if( isOnTheLeft(point, 0, 3.5f*A-angle) ) |
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{
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return isOnTheLeft(point, 0, 5.5f*A-angle) ? 4 : 5; |
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} |
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else return 1; |
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} |
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else |
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{
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if( isOnTheLeft(point, 0, 4.5f*A-angle) ) |
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{
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return 3; |
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} |
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else |
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{
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return isOnTheLeft(point, 0, 6.5f*A-angle) ? 2 : 1; |
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} |
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} |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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boolean isInsideFace(int face, float[] p) |
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{
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return ( p[0]*p[0] + p[1]*p[1] <= 1/(4*COS54*COS54) );
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return returnPartOfThePentagon(p,face) > 0;
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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void computeEnabledAxis(int face, float[] touchPoint, int[] enabled) |
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{
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enabled[0] = 5;
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int part = returnPartOfThePentagon(touchPoint,face);
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switch(face)
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if( part>0 )
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{
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case 0: |
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case 3: enabled[1]=1; enabled[2]=2; enabled[3]=3; enabled[4]=4; enabled[5]=5; break; |
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case 1: |
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case 2: enabled[1]=0; enabled[2]=2; enabled[3]=3; enabled[4]=4; enabled[5]=5; break; |
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case 4: |
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case 7: enabled[1]=0; enabled[2]=1; enabled[3]=3; enabled[4]=4; enabled[5]=5; break; |
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case 5: |
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case 6: enabled[1]=0; enabled[2]=1; enabled[3]=2; enabled[4]=4; enabled[5]=5; break; |
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case 8: |
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case 11: enabled[1]=0; enabled[2]=1; enabled[3]=2; enabled[4]=3; enabled[5]=5; break; |
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case 9: |
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case 10: enabled[1]=0; enabled[2]=1; enabled[3]=2; enabled[4]=3; enabled[5]=4; break; |
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enabled[0] = 2; |
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switch(face) |
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{
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case 0: switch(part) |
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{
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case 1: enabled[1]=2; enabled[2]=3; break; |
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case 2: enabled[1]=3; enabled[2]=5; break; |
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case 3: enabled[1]=5; enabled[2]=1; break; |
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case 4: enabled[1]=1; enabled[2]=4; break; |
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case 5: enabled[1]=4; enabled[2]=2; break; |
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} |
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break; |
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case 1: switch(part) |
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{
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case 1: enabled[1]=0; enabled[2]=5; break; |
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case 2: enabled[1]=5; enabled[2]=2; break; |
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case 3: enabled[1]=2; enabled[2]=3; break; |
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case 4: enabled[1]=3; enabled[2]=4; break; |
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case 5: enabled[1]=4; enabled[2]=0; break; |
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} |
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break; |
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case 2: switch(part) |
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{
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case 1: enabled[1]=3; enabled[2]=2; break; |
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case 2: enabled[1]=2; enabled[2]=5; break; |
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case 3: enabled[1]=5; enabled[2]=0; break; |
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case 4: enabled[1]=0; enabled[2]=4; break; |
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case 5: enabled[1]=4; enabled[2]=3; break; |
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} |
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break; |
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case 3: switch(part) |
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{
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case 1: enabled[1]=1; enabled[2]=5; break; |
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case 2: enabled[1]=5; enabled[2]=3; break; |
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case 3: enabled[1]=3; enabled[2]=2; break; |
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case 4: enabled[1]=2; enabled[2]=4; break; |
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case 5: enabled[1]=4; enabled[2]=1; break; |
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} |
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break; |
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case 4: switch(part) |
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{
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case 1: enabled[1]=3; enabled[2]=0; break; |
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case 2: enabled[1]=0; enabled[2]=4; break; |
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case 3: enabled[1]=4; enabled[2]=5; break; |
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case 4: enabled[1]=5; enabled[2]=1; break; |
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case 5: enabled[1]=1; enabled[2]=3; break; |
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} |
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break; |
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case 5: switch(part) |
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{
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case 1: enabled[1]=2; enabled[2]=1; break; |
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case 2: enabled[1]=1; enabled[2]=4; break; |
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case 3: enabled[1]=4; enabled[2]=5; break; |
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case 4: enabled[1]=5; enabled[2]=0; break; |
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case 5: enabled[1]=0; enabled[2]=2; break; |
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} |
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break; |
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case 6: switch(part) |
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{
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case 1: enabled[1]=5; enabled[2]=4; break; |
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case 2: enabled[1]=4; enabled[2]=1; break; |
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case 3: enabled[1]=1; enabled[2]=2; break; |
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case 4: enabled[1]=2; enabled[2]=0; break; |
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case 5: enabled[1]=0; enabled[2]=5; break; |
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} |
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break; |
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case 7: switch(part) |
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{
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case 1: enabled[1]=5; enabled[2]=4; break; |
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case 2: enabled[1]=4; enabled[2]=0; break; |
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case 3: enabled[1]=0; enabled[2]=3; break; |
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case 4: enabled[1]=3; enabled[2]=1; break; |
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case 5: enabled[1]=1; enabled[2]=5; break; |
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} |
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break; |
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case 8: switch(part) |
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{
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case 1: enabled[1]=2; enabled[2]=0; break; |
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case 2: enabled[1]=0; enabled[2]=1; break; |
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case 3: enabled[1]=1; enabled[2]=3; break; |
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case 4: enabled[1]=3; enabled[2]=5; break; |
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case 5: enabled[1]=5; enabled[2]=2; break; |
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} |
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break; |
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case 9: switch(part) |
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{
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case 1: enabled[1]=3; enabled[2]=4; break; |
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case 2: enabled[1]=4; enabled[2]=2; break; |
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case 3: enabled[1]=2; enabled[2]=1; break; |
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case 4: enabled[1]=1; enabled[2]=0; break; |
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case 5: enabled[1]=0; enabled[2]=3; break; |
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} |
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break; |
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|
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case 10: switch(part) |
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{
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case 1: enabled[1]=2; enabled[2]=4; break; |
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case 2: enabled[1]=4; enabled[2]=3; break; |
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case 3: enabled[1]=3; enabled[2]=0; break; |
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case 4: enabled[1]=0; enabled[2]=1; break; |
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case 5: enabled[1]=1; enabled[2]=2; break; |
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} |
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break; |
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|
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case 11: switch(part) |
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{
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case 1: enabled[1]=3; enabled[2]=1; break; |
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case 2: enabled[1]=1; enabled[2]=0; break; |
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case 3: enabled[1]=0; enabled[2]=2; break; |
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case 4: enabled[1]=2; enabled[2]=5; break; |
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case 5: enabled[1]=5; enabled[2]=3; break; |
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} |
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break; |
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} |
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} |
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else |
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{
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enabled[0] = 0; |
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| 102 | 301 |
} |
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} |
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} |
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