DGN Linear Dimension Drawer

This custom transformer contains the framework to draw linear DGN dimensions when fed linear features(lines, polygons). This transformer will break the features into its constituent lines, and draw dimensions for each line.

It has user parameters with presets to help make drawing the dimensions more visually appealing, these include: text alignment, text justification, arrow style, and offsetting the witness lines.

Limitations:

A major limitation of this custom transformer is that the user does not have control over where the dimension line gets drawn. It will be along the line that its measuring but which side the dimension line itself will be drawn on seems to be random.

As the name suggests, this transformer cannot handle arc dimensions at all, a workflow to draw arc dimensions would be too different to incorporate into this one.

Only 3 fonts are available, I recommend using the true type font, which is Arial. Perferrably only use the AutoCAD compatible one if you need to assure absolute compatibility with AutoCAD. There are many more fonts available in Microstation, but these three offer a good starting point, one in each font type supported by the software.

Many of the format attributes that are set with words in the custom transformer are set with numbers within the transformer, for ease of use. More information on format attributes, their value ranges, and what they do can be found here for dimensions and here for features.