Arc

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To add arcs into a drawing use following functions:

Function	Meaning
lcBlockAddArc	By center point, radius, start angle, included angle
lcBlockAddArc3P	By start point, middle point, end point
lcBlockAddFillet	As a fillet between two entities

An arc has properties and functions derived from base class and the following specific properties:

Property	Type	Access	Meaning
LC_PROP_ENT_...    Base class properties
LC_PROP_ARC_X	float	RW	Center point X
LC_PROP_ARC_Y	float	RW	Center point Y
LC_PROP_ARC_RAD	float	RW	Radius
LC_PROP_ARC_ANG0	float	RW	Start angle
LC_PROP_ARC_ANGARC	float	RW	Arc included angle. Positive - counter-clockwise, negative - clockwise
LC_PROP_ARC_ANGEND	float	R	End angle
LC_PROP_ARC_X0	float	R	Start point X
LC_PROP_ARC_Y0	float	R	Start point Y
LC_PROP_ARC_XMID	float	R	Middle point X
LC_PROP_ARC_YMID	float	R	Middle point Y
LC_PROP_ARC_XEND	float	R	End point X
LC_PROP_ARC_YEND	float	R	End point Y
LC_PROP_ARC_LEN	float	R	Length
LC_PROP_ARC_CHLEN	float	R	Chord length
LC_PROP_ARC_AREA	float	R	Area
LC_PROP_ARC_CCW	bool	R	"Counter-ClockWise direction" flag
LC_PROP_ARC_SECTOR	bool	RW	"Draw as sector" flag
LC_PROP_ARC_RESOL	int	RW	Resolution

Grips

0 - start point
1 - middle point
2 - end point
3 - center point
4 - rotation
5 - start angle
6 - end angle
7 - radius

If you point cursor on a grip 0,1,2 and click right button - context popup menu will appear:


See also

  Retrieve objects