arc3P arcBulge arcTan arcToBezier bezier4P bezierIntersectionWithLine bezierIsStraight bezierPointDistantFromPoint bezierPointLengthFromStart bezierTanget bsplinesToBeziers crossLineCircle crossTwoCircles cubicSplines cubicSplineToBezier ellipse90ToBezier ellipseToBezier fitBezier FitCubicCallback fitCubicSpline fitCurve fitCurve2 fitCurve3 fitCurve4 gaussJordan lengthOfBezier PtCallback quadBezierToCubic roundRectToBeziers SplineFlags splitBezier triEquations

SplineFlags enum mgcurv::SplineFlags 三次参数样条曲线的端点条件 参见 cubicSplines 枚举值 cubicTan1  起始夹持端 cubicArm1  起始悬臂端 cubicTan2  终止夹持端 cubicArm2  终止悬臂端 cubicLoop  闭合, 有该值时忽略其他组合值