About Orthogonal Dimensioning

There are several types of orthogonal dimensioning. Depending on the dimensioning type, the system uses the LINE_TYPE attribute and the POINT_TYPE attribute to distinguish the points and lines. In the display models, you use these attributes to stylize the dimensioning layers.

For example, if the abscissa has been extended, because an orthogonal point is located behind the end point of the abscissa, the line is of type OAE, and you can style the line as a dashed line.

Data Model: Components of an orthogonal dimension.

An orthogonal dimensioning consists of points and lines, as shown in the following table.

Orthogonal Dimensioning type	Description
OC = Orthogonal Complete	Default orthogonal dimensioning including lines and labels. Consists of: Line of type OA = orthogonal abscissa. Lines of type OAE: Orthogonal Abscissa extension. Only if an ordinate lies behind the abscissa start or end point. Point of type AS = start point of abscissa. Point of type AE = end point of abscissa. Multiple lines of type OO: ordinates. For each ordinate: point of type OS: start point of ordinate. For each ordinate: point of type OE: end point of ordinate.
OE = Orthogonal Extension Baseline	Orthogonal Dimensioning based on the extension of a baseline. For example, you use the edge of a building as abscissa. Consists of: Line of type OAB = orthogonal abscissa. Lines of type OAE: Orthogonal Abscissa extension. Only if an ordinate lies behind the abscissa start or end point. Point of type AS = start point of abscissa. Point of type AE_ = end point of abscissa. Notice the special line type. In the Display Manager, use the line type AE_ to hide the end point in the drawing. Multiple lines of type OO: ordinates. For each ordinate: point of type OS: start point of ordinate. For each ordinate: point of type OE: end point of ordinate.

Both OC and OE dimensioning support embedded feature dimensioning. An embedded feature is a line that intersects the orthogonal abscissa. The intersection point can be embedded as any other orthogonal point.

Components of an orthogonal baseline dimension, and an embedded dimension.