import cad
General Module Function
The import cad module will read the following versions of CAD files:
- AutoCAD DWG and DXF files through AutoCAD 2021 (version 24.0)
- Bentley Microstation DGN files through Version 8.
This module provides the user with the capability to integrate site plans, buildings, and other 2D or 3D features into the EVS visualization, to provide a frame of reference for understanding the three dimensional relationships between the site features, and characteristics of geologic, hydrologic, and chemical features. The drawing entities are treated as three dimensional objects, which provides the user with a lot of flexibility in the placement of CAD objects in relation to EVS objects in the visualization. The project onto surface and geologic_surfmap modules allow the user to drape CAD line-type entities (not 3D-Faces) onto three dimensional surfaces.
Virtually all AutoCAD object types are supported including points, lines (of all types), 3D surface objects and 3D volumetric objects.
AutoCAD drawings can be drawn in model space (MSPACE) or paper space (PSPACE). Drawings in paper space have a defined viewport which has coordinates near the origin. When read into EVS this creates objects which are far from your true model coordinates. For this reason, all drawings for use in our software should be in model space.
Module Side Port
- Z Scale Use the Global Z Scale and avoid using this port in general: [Number] Accepts Z Scale (vertical exaggeration) from other modules.
Module Output Ports
- Output [Field] Outputs the CAD layers.
- Output Object [Renderable]: Outputs to the viewer