Hello! I’m ippuku_time, a GIS implementation support consultant.
This is the 20th installment of the “5-Minute Guide to SuperMap iDesktopX” series. In the previous part, we explored advanced techniques for freely creating and editing 3D models. This time, we’ll dive deeper into specialized areas and introduce the 3D Data Processing capabilities of iDesktopX, which are tailored to the diverse data types commonly handled in 3D GIS—such as models, terrain, geological bodies, and point clouds.
3D GIS projects often involve data collected from a wide variety of sources and in different formats. iDesktopX provides dedicated processing tools designed for the characteristics of each data type, offering powerful support for data preparation and enabling the construction of high-quality 3D scenes.
Integrated processing of multiple 3D data types (terrain, models, point clouds, etc.)
1. 3D Model Data Processing
(1) Attribute Extraction
Geometric attributes—such as volume, surface area, vertex count, and top and bottom elevations—are automatically calculated from 3D model datasets and stored in the attribute table. This enables analyses such as estimating building floor area ratios or calculating approximate wall areas.
(2) Terrain-Based Model Correction
When placing 3D models (e.g., buildings) on uneven terrain, models may appear to sink into or float above the ground. This function automatically adjusts the model’s Z-values to match the terrain elevation, ensuring accurate and realistic placement.
(3) Bulk Cache Generation
Large volumes of model data, including BIM and CAD models, can be batch-converted into the optimized 3D Tile Cache format, enabling fast and smooth visualization in 3D scenes.
2. Geological Body Model Processing
These specialized functions support the visualization and analysis of underground spaces that are not directly visible.
(1) Geological Body Construction
Using point data obtained from drilling surveys and similar sources, iDesktopX can automatically generate complex 3D geological body models representing subsurface strata.
(2) Geological Sections and Drilling Analysis
Users can create geological cross-sections by cutting geological body models along specified lines and generate virtual borehole logs at any location. These capabilities are essential for understanding subsurface conditions in civil engineering and construction projects.
3. TIN Terrain Processing
TIN (Triangulated Irregular Network) is a commonly used format for terrain representation. iDesktopX provides flexible tools for TIN processing:
(1) TIN Cache Merging
Merge multiple TIN terrain datasets into a single unified terrain model.
(2) Ocean Overlay on TIN Terrain
Based on coastline data, realistic ocean surfaces can be overlaid onto TIN terrain, enhancing coastal scene visualization.
4. Photogrammetric Model Processing
These functions simplify the use of realistic 3D city models generated through photogrammetry, such as those provided by Project PLATEAU.
(1) Configuration File Generation
Generate configuration files (*.scp) to efficiently load large volumes of OSGB tile data into iDesktopX.
(2) Large Cache File Generation
Combine numerous small tile files into a single large cache file (*.cf), improving data management efficiency and access performance.
(3) Compression and Individual Objectization
By compressing textures, data size is significantly reduced. Additionally, splitting photogrammetric models into individual building objects makes it easier to attach and manage attribute information.
5. Point Cloud Data Processing
Point cloud data acquired through LiDAR offers extremely high resolution but typically involves massive data volumes. iDesktopX provides efficient tools to manage and visualize this data.
(1) Configuration File Generation
Convert point cloud data in *.las or .txt formats into configuration files (.list) compatible with iDesktopX.
(2) Cache Generation
Using the configuration files, optimized 3D tile caches are generated, enabling fast rendering and smooth display of point cloud data in 3D scenes.
Summary
In this installment, we introduced iDesktopX’s specialized 3D data processing capabilities for a wide range of 3D data types. From model attribute extraction and terrain alignment, to geological body construction, and optimization of large-scale datasets such as photogrammetric models and point clouds, these tools form a solid foundation for integrating multi-source 3D data and building high-value digital twins.
Up next — Part 21:
“Unraveling the Mysteries of 3D Space! Advanced 3D Spatial Analysis”
We’ll explore advanced 3D analytical techniques such as solar radiation analysis and viewshed analysis. Stay tuned!
For source and sample code, please refer to: https://supermap-japan.blogspot.com/2025/09/gisippukutime-5supermap-idesktopx203d3d.html
