1103     double delA,delB,delX,delY;  in icvGetCrossPiecePiece()  local
1123     delA =  (ey1-ey2)*(ex1-px1) + (ex1-ex2)*(py1-ey1);  in icvGetCrossPiecePiece()
1126     alpha = delA / del;  in icvGetCrossPiecePiece()
3421     double delA,delB,delX,delY;  in GetCrossLines()  local
3440     delA =  (px1-ex1)*(py1-py2) + (ey1-py1)*(px1-px2);  in GetCrossLines()
3443     alpha =  delA / del;  in GetCrossLines()
3468     double delA,delB,delX,delY;  in icvGetCrossPieceVector()  local
3487     delA =  (px1-ex1)*(py1-py2) + (ey1-py1)*(px1-px2);  in icvGetCrossPieceVector()
3490     alpha =  delA / del;  in icvGetCrossPieceVector()
3513     double delX,delY,delA;  in icvGetCrossLineDirect()  local
3530     delA = - c - a*px1 - b*py1;  in icvGetCrossLineDirect()
3531     alpha = delA / del;  in icvGetCrossLineDirect()