Summary

The GT_TRIANGULATE command in BricsCAD, AutoCAD, ZWCAD and ARES Commander allows users to generate TIN (Triangulated Irregular Network) surfaces or Voronoi polygons from a set of points. This is particularly useful in terrain modeling, GIS, and topographic mapping applications.

GeoTool -> Civil Tools -> Surfaces -> Create TIN Surface (Delauney triangles) / Voronoi polygons

Create TIN Surface (Delauney Triangles) / Voronoi Polygons: GT_TRIANGULATE – GeoTools Command

Key Features Include:

1. TIN (Triangulated Irregular Network) Surface Creation

• Generates 3D faces, 3D polylines, or BricsCAD TIN surfaces from a set of points.
• Ensures efficient terrain representation by forming a network of non-overlapping triangles.
• Allows integration of linear objects (like breaklines) to refine the surface model.
• Option to specify a maximum triangle side length, preventing excessively large triangles in sparse areas.
• Stores surface data externally in a GeoDTM file, ensuring reusability and structured data storage.

2. Voronoi Polygon Creation

• Generates Voronoi polygons from input points using either lines or closed polylines.
• Voronoi diagrams are widely used in spatial analysis to determine influence zones or nearest-neighbor relationships.
• Provides an option to trim Voronoi polygons to a custom bounding box, restricting them to a desired study area.
• Option to generate a bounding rectangle around the selection for better visualization.
• Ability to create centroids inside Voronoi polygons for further spatial processing.

3. Customization & Boundary Definition

• Users can specify a layer for storing Voronoi polygons and TIN surfaces, improving data organization.
• Ability to create a polygon boundary that follows the convex hull of the TIN.
• Supports surface boundary clipping, ensuring that the generated surface remains within the dataset limits.

Benefits

• Essential for Digital Terrain Modeling (DTM) and GIS workflows, enabling precise topographic analysis.
• Provides an accurate surface representation using TINs, ensuring better results in elevation modeling.
• Helps in spatial partitioning using Voronoi diagrams, useful in urban planning, geology, and hydrology studies.
• Prevents unnecessary triangulation outside the dataset bounds, improving model accuracy.
• Streamlines surface processing and analysis, making it a vital tool for surveyors, civil engineers, and GIS professionals.

With GT_TRIANGULATE, users can efficiently model surfaces, analyze spatial relationships, and generate precise terrain representations within CAD environments.