While there isn't a single button labeled "Repack" inside SketchUp, the concept represents the vital bridge between surveying data and 3D modeling. By understanding how to decimate and optimize (repack) point data, architects can transform raw scan data into functional, accurate building models without crashing their software.
In the context of SketchUp, a "point" refers to a vertex in a mesh or a coordinate in space. A "building point" is any discrete location that defines a structure's geometry. The term "repack" involves three distinct processes:
When professionals search for this term, they are usually troubleshooting a bloated file, attempting to convert a 3D scan into a solid model, or optimizing a city-scale rendering.
Before opening SketchUp, the data must be processed in dedicated software such as CloudCompare (free/open source) or Autodesk ReCap. sketchup building point repack
Even experienced modelers fall into these traps:
| Mistake | Consequence | Solution |
|---------|-------------|----------|
| Repacking before cleaning | Carries noise into final model | Always use a statistical filter first |
| Merging points after grouping | Explodes component hierarchy | Use Edit > Outer Shell instead of Merge |
| Saving as .skp after repack | Loss of point classification data | Save original .las externally; export final as .dae or .ifc |
| Ignoring Z-axis drift | Floors become slanted | Use a horizontal clipping plane to level points |
To repack a building or a complex object, you are essentially stripping away unnecessary data and wrapping the remainder into a clean container. While there isn't a single button labeled "Repack"
Step A: Reduction (The Purge) Before repacking, you must purge unused data.
Step B: Simplifying Geometry (The Repack) If you have a complex building facade or a high-poly imported mesh:
Step C: Componentizing (The Container) This is the final step of the "repack." Once geometry is optimized, select it and make it a Component. When professionals search for this term, they are
For repetitive buildings (apartment complexes, shopping malls), use dynamic components:
This reduces a 50MB building to 500KB by storing the building definition once and the point positions separately.