弧

该函数有两种形式：circularArc()

virtual Adesk::Boolean
AcGiWorldGeometry::circularArc(
    const AcGePoint3d& center,
    const double radius,
    const AcGeVector3d& normal,
    const AcGeVector3d& startVector,
    const double sweepAngle,
    const AcGiArcType arcType = kAcGiArcSimple) const = 0;
 
virtual Adesk::Boolean
AcGiWorldGeometry::circularArc(
    const AcGePoint3d& start,
    const AcGePoint3d& point,
    const AcGePoint3d& end,
    const AcGiArcType arcType = kAcGiArcSimple) const = 0;

弧型变量 （） 可以具有以下值之一：AcGiArcType

• kAcGiArcSimple弧本身，不可填充
• kAcGiArcSector以弧及其曲率中心为界的区域
• kAcGiArcChord由圆弧及其端点限定的区域