Extended Object 32 "Bézier Curves, Polyline" (Entity Type "Extended Object")

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The extended object "Bézier Curves, Polyline" is defined by CAD6studio and CAD6industrie.

 

Creation of this extended object is not supported in CAD6starter and CAD6engine Eco! If already created, it can be displayed and modified generally, but not modified parametrically.

 

Data Block Sequence

Data Block 1000( Waviness )

Data Block 1001( Endstyle )

Data Block 001( Start )

 

For each segment

Data Block 002( End )

 

Parameters

Waviness

[double] Waviness of the spline. Allowed range: 0 ≤ Waviness ≤ 1.0. A value of 0.0 results in a straight polyline, a value of 1.0 results in a very curvy spline.

Endstyle

[__int32] Determines how the curve shall approach its end points. Possible values are:

0The curve will approach its ends tangentially, i.e. the first and last pivot point will be on the respective connection of end point and adjacent point.
1The curve will approach its ends symmetrically, i.e. the first and the last pivot point will be symmetrical to the respective other pivot point of that segment.
2The curve will approach its ends linear, i.e. the first and the last pivot point will be on the respective end point.

Start

[MKI_POINT] Start point of the first Bézier curve segment.

End

[MKI_POINT] End point of one Bézier curve segment.

 

Interface Command Sequence

MKI_ExtOpen, OwnerID = MKI_DB_OWNER_MK, Type = MKI_OBJ_EXT_BEZIER_POLY, Flag = MKI_EXTFLAG_CURVE

MKI_ExtAddDouble, Type = 1000

MKI_ExtAddInt32, Type = 1001

MKI_ExtAddPoint, Type = MKI_DB_POINT_START

 

For each segment:

MKI_ExtAddPoint, Type = MKI_DB_POINT_END

 

MKI_ExtFastInsert

 

Use code like the following to parse the data blocks of this entity in memory:

 

MKI_BLOCK_ENUM b1000( f_pExt ),

               b1001( f_pExt ),

               b1( f_pExt );

b1001.SetNext( b1000 );

b1.SetNext( b1001 );

 

Followed by a loop running through all data blocks and copying the points into an array.

 

CAD6interface 2026.1 - Copyright 2026 Malz++Kassner® GmbH