Understanding Features. Presented by: Derricke Gray. Understandin g Features.
After this presentation you will be able:
Point Linear Surface
How does the software know which specific DGN Libraries contain features?
Or does it just read from all of them?
When linking to a legacy feature file, how does the software determine what type each feature is?
Link to Survey Link to DDB/XIN/PSS
Best practice is to do this once.
After the initial linking has been done, any structural changes to the feature definition tree (new features, renaming of features, etc.) should be made directly in the DGN Lib.
Note: An exception would be changes to symbology or annotation, which would be made in the legacy style file.
Surfaces Feature Definitions used for Existing Terrain Models
Surfaces Feature Definitions used for Proposed Components
Point Linear Surface
This prefix would be used as the ‘default’ name prefix for any civil element placed using this feature.
Feature inherited from Horizontal
Feature inherited from Surface
Shouldn’t a Surface feature definition contain a cross section property as well?
How will the software know how to display my existing and proposed surfaces on cross sections?
When cross sections are cut, the proposed elements take their symbology directly from the proposed 3D model.
The existing ground symbology is always taken from the 3D Property of the feature definition (which must be an Element Template).
For example, here someone has gone into Element Information and changed the triangles to ‘blue’.
Yet the existing ground line displayed in my cross sections is still ‘green’.
That is because the symbology for the existing ground is being taken from the Element Template called out in the 3D property of the feature definition.
When you place a horizontal geometry element using a feature that has this enabled AND the Create 3D Automatically is enabled on the toggle bar, an existing ground profile and a best fit profile is automatically created for the element being placed.
In addition, the best fit profile is made active, creating a 3D element.
Each point in a template is assigned a feature. This feature either has the Create Template Geometry functionality enabled or disabled.
Feature = Road_EdgeOfPavement
1. Which of the following is not a valid feature type?
Answer – b) Pipe
2. The option to link civil features to a legacy style file is found under which tab in Project Explorer?
Answer – c) Civil Standards
3. True or False: Civil_ContentManagementDGNLiblist is the configuration variable that is used to point to the DGN Library containing features.
Answer – True