498     SkPoint unitPts[2];  in arcTo()  local
499     pointTransform.mapPoints(unitPts, srcPts, (int) SK_ARRAY_COUNT(unitPts));  in arcTo()
500     SkVector delta = unitPts[1] - unitPts[0];  in arcTo()
510     SkPoint centerPoint = unitPts[0] + unitPts[1];  in arcTo()
513     unitPts[0] -= centerPoint;  in arcTo()
514     unitPts[1] -= centerPoint;  in arcTo()
515     SkScalar theta1 = SkScalarATan2(unitPts[0].fY, unitPts[0].fX);  in arcTo()
516     SkScalar theta2 = SkScalarATan2(unitPts[1].fY, unitPts[1].fX);  in arcTo()
556         unitPts[1].set(cosEndTheta, sinEndTheta);  in arcTo()
557         unitPts[1] += centerPoint;  in arcTo()
558         unitPts[0] = unitPts[1];  in arcTo()
559         unitPts[0].offset(t * sinEndTheta, -t * cosEndTheta);  in arcTo()
561         pointTransform.mapPoints(mapped, unitPts, (int) SK_ARRAY_COUNT(unitPts));  in arcTo()