258     double acb = -ab.dotProd(c);  in simpleCrossing()
259     double cbd = -cd.dotProd(b);  in simpleCrossing()
260     double bda = ab.dotProd(d);  in simpleCrossing()
261     double dac = cd.dotProd(a);  in simpleCrossing()
471     return new S2Point(0.5 * S2Point.crossProd(y, z).dotProd(r),  in trueCentroid()
472         0.5 * S2Point.crossProd(z, x).dotProd(r), 0.5 * S2Point.crossProd(x, y).dotProd(r));  in trueCentroid()
498     return S2Point.crossProd(c, a).dotProd(b) > 0;  in simpleCCW()
552     double det = aCrossB.dotProd(c);  in robustCCW()
607     double sab = (a.dotProd(b) > 0) ? -1 : 1;  in expensiveCCW()
608     double sbc = (b.dotProd(c) > 0) ? -1 : 1;  in expensiveCCW()
609     double sca = (c.dotProd(a) > 0) ? -1 : 1;  in expensiveCCW()
625         sign = S2Point.crossProd(vab, vca).dotProd(a) * sab; // BC is longest  in expensiveCCW()
628         sign = S2Point.crossProd(vca, vbc).dotProd(c) * sca; // AB is longest  in expensiveCCW()
633         sign = S2Point.crossProd(vbc, vab).dotProd(b) * sbc; // CA is longest  in expensiveCCW()
636         sign = S2Point.crossProd(vca, vbc).dotProd(c) * sca; // AB is longest  in expensiveCCW()
674     double sab = (a.dotProd(b) > 0) ? -1 : 1;  in planarCCW()