MKI_ARROWMODE_* (Dimension Line Extension Mode)

Determines whether the dimension ends at the dimension's start-point or whether it is extended (which would result in rotated dimension arrows). Possible values are:

MKI_ARROWMODE_INSIDE (0)

The dimension line ends at the dimension's start-point, the dimension arrows will not be rotated.

MKI_ARROWMODE_OUTSIDE (1)

The dimension line is extended, the dimension arrows will be rotated.

MKI_ARROWMODE_AUTO (2)

Automatic length detection. If the dimension is less than 30.0 times the dimension line's width, the dimension lines will be extended and the dimension arrows will be rotated.

The extension of the dimension depends on the dimension arrow type (see MKI_ARROWFORM_*):

For types MKI_ARROWFORM_TRIANGLE_FILL, MKI_ARROWFORM_TRIANGLE and MKI_ARROWFORM_TRIANGLE_OPEN, it is 30.0 times the dimension line's width. For types MKI_ARROWFORM_DIAGONAL, MKI_ARROWFORM_CIRCLE_FILL and MKI_ARROWFORM_CIRCLE, it is 5.0 times the dimension line's width. For type MKI_ARROWFORM_CIRCLE_LARGE, it is 4.0 times the dimension line's width. Type MKI_ARROWFORM_NONE has no extension.

The following image shows all types of dimension arrows, once in normal presentation (upper row), once in rotated presentation with extended dimension line (lower row):

Please note that ellipse arc dimension lines do not automatically extend!