1101     double px1,py1,px2,py2;  in icvGetCrossPiecePiece()  local
1112     py1 = p2_start.y;  in icvGetCrossPiecePiece()
1116     del = (py1-py2)*(ex1-ex2)-(px1-px2)*(ey1-ey2);  in icvGetCrossPiecePiece()
1123     delA =  (ey1-ey2)*(ex1-px1) + (ex1-ex2)*(py1-ey1);  in icvGetCrossPiecePiece()
1124     delB =  (py1-py2)*(ex1-px1) + (px1-px2)*(py1-ey1);  in icvGetCrossPiecePiece()
1136             (ex1-ex2)*(px1*(py1-py2)-py1*(px1-px2));  in icvGetCrossPiecePiece()
1138     delY =  (py1-py2)*(ey1*(ex1-ex2)-ex1*(ey1-ey2))+  in icvGetCrossPiecePiece()
1139             (ey1-ey2)*(px1*(py1-py2)-py1*(px1-px2));  in icvGetCrossPiecePiece()
3419     double px1,py1,px2,py2;  in GetCrossLines()  local
3430     py1 = p2_start.y;  in GetCrossLines()
3434     del = (ex1-ex2)*(py2-py1)+(ey2-ey1)*(px2-px1);  in GetCrossLines()
3440     delA =  (px1-ex1)*(py1-py2) + (ey1-py1)*(px1-px2);  in GetCrossLines()
3441     delB =  (ex1-px1)*(ey1-ey2) + (py1-ey1)*(ex1-ex2);  in GetCrossLines()
3451     delX =  (ex1-ex2)*(py1*(px1-px2)-px1*(py1-py2))+  in GetCrossLines()
3454     delY =  (ey1-ey2)*(px1*(py1-py2)-py1*(px1-px2))+  in GetCrossLines()
3455             (py1-py2)*(ey1*(ex1-ex2)-ex1*(ey1-ey2));  in GetCrossLines()
3466     double px1,py1,px2,py2;  in icvGetCrossPieceVector()  local
3477     py1 = v2_start.y;  in icvGetCrossPieceVector()
3481     del = (ex1-ex2)*(py2-py1)+(ey2-ey1)*(px2-px1);  in icvGetCrossPieceVector()
3487     delA =  (px1-ex1)*(py1-py2) + (ey1-py1)*(px1-px2);  in icvGetCrossPieceVector()
3488     delB =  (ex1-px1)*(ey1-ey2) + (py1-ey1)*(ex1-ex2);  in icvGetCrossPieceVector()
3498     delX =  (ex1-ex2)*(py1*(px1-px2)-px1*(py1-py2))+  in icvGetCrossPieceVector()
3501     delY =  (ey1-ey2)*(px1*(py1-py2)-py1*(px1-px2))+  in icvGetCrossPieceVector()
3502             (py1-py2)*(ey1*(ex1-ex2)-ex1*(ey1-ey2));  in icvGetCrossPieceVector()
3515     double px1,px2,py1,py2;  in icvGetCrossLineDirect()  local
3519     py1 = p1.y;  in icvGetCrossLineDirect()
3524     del = a * (px2 - px1) + b * (py2-py1);  in icvGetCrossLineDirect()
3530     delA = - c - a*px1 - b*py1;  in icvGetCrossLineDirect()
3538     delX = b * (py1*(px1-px2) - px1*(py1-py2)) + c * (px1-px2);  in icvGetCrossLineDirect()
3539     delY = a * (px1*(py1-py2) - py1*(px1-px2)) + c * (py1-py2);  in icvGetCrossLineDirect()