Data Block Sequence

Data Block 003( Center )

Data Block 004( Radius )

Data Block 005( Angle1 )

Data Block 005( Angle2 )

Data Block 101( Orientation )

Parameters

Center

[MKI_POINT] Center point of the circle.

Radius

[MKI_POINT] Radius point of the circle.

Angle1

[MKI_POINT] Start angle of the segment.

Angle2

[MKI_POINT] End angle of the segment.

Orientation

[double] Direction of the segment. If Orientation >= 0, the segment is drawn counter-clockwise from the start angle to the end angle. If Orientation < 0, the segment is drawn clockwise.

Parameters

TBD1

[double] Curvature of the logarithmic spiral. Valid range is 0.0 < Curvature < 1.0.

TBD2

[__int32] A bit-wise OR combination of options. It can be any combination of the following values:

0x00000000

No special mode.

0x00000001

The number of rotations will be automatically calculated (must not be combined with 0x00000002).

0x00000002

The rotation distance will be automatically calculated (must not be combined with 0x00000001).

0x00000004

The spiral will be created in reverse orientation, i.e. clockwise starting from the outermost point.

0x00000008

The spiral will be logarithmic (not Archimedean).

Center

[MKI_POINT] Center point of the spiral.

Radius

[MKI_POINT] Radius point of the outermost circle.

Angle

[MKI_POINT] Overall rotation relative to Center.

Attributes New in Version 2021.0

A circle segment may contain attribute data blocks (see MKI_BLOCK_ATTRIBUTE) of types "local", "outline", and "point". Their position in the list of data blocks must be as follows:

-	Outline attributes must be placed anywhere behind the first point. Any outline attribute after the first point data block belongs to the outline.

-	Point attributes must be placed behind the respective point. Any point attribute after point data block P and before the next point data block (or end of object) belongs to that point P.

-	Local attributes should be placed behind all other datablocks and attributes.

The total number of attributes of each type (local, outline, point) per respective element (entity, outline, and point) is limited to MKI_ATTRIBS_PER_OBJECT.

Interface Command Sequence

MKI_ObjectOpen, Type = MKI_OBJ_SEGMENT

MKI_ObjectAddPoint, Type = MKI_DB_POINT_CENTER

MKI_ObjectAddPoint, Type = MKI_DB_POINT_RADIUS

MKI_ObjectAddPoint, Type = MKI_DB_POINT_ANGLE

MKI_ObjectAddOrient

MKI_ObjectFastInsert

Use the MKI_PARSE_OBJ_ARC class to parse the data blocks of such an object in memory.