How to use Integrated CAD functions in 3Dsurvey
The CAD tools in 3Dsurvey expand its already comprehensive modeling and analysis features. These tools allow users to handle projects using CAD functionalities like creating layers, managing areas, surfaces, and points. You can now complete mapping projects and generate reports without needing third-party CAD software.
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Drawing 3D Lines Using Point Cloud Data
To draw 3D lines, go to the CAD tab, where you’ll find essential tools such as Edit, Select, and Draw. Begin by adding a new layer, renaming it, and adjusting properties like color and line weight. When you start drawing, snap points directly to the point cloud by left-clicking to create vertices and right-clicking to complete the line. The drawing process is dynamic, allowing you to pan and rotate the model as you work for better precision.
Editing and Adjusting Layers and Polygons
To create an additional layer (e.g., for construction areas), activate it, change its color and line weight, and draw a closed polygon. Use the ESC key or Select tool to edit any vertices and adjust positions. You can also modify the color of selected objects or move them to another layer to organize your project visually and functionally. CAD results are visible across the Orthophoto tab, ensuring consistency throughout the project.
Using DSM and Orthophoto Data for 3D Line Drawing
For detailed photogrammetric data, go to the DSM tab, where a classified digital terrain model should be prepared. By draping the orthophoto over the DSM, you’ll get a textured 3D model. Add point cloud data, create a new layer, and draw 3D lines, snapping directly to points or using the point picker to create new ones. Adjust snapper settings or add attributes such as 2D distances while drawing.
Inspecting and Exporting CAD Results
After completing your 3D drawing, review the results in the Point Cloud tab by turning off point cloud and DSM views to see your 3D break lines. The results can also be checked in the Orthophoto tab. Once satisfied, export the 3D lines and areas via Data → Export DXF to use them in 3Dsurvey reports or with any third-party CAD software.
Conclusion
By leveraging the full power of CAD tools in 3Dsurvey, you can efficiently complete mapping projects, ensuring accuracy and compatibility with other software. Whether it’s creating precise 3D lines or handling detailed terrain models, the integrated CAD functions offer a robust solution.