# Free roaming of 3D stratum models based on internal and external boundary identification

## TL;DR

This paper introduces a new method for 3D stratum roaming that allows efficient switching between internal and external views of geological models.

## Contribution

The novel approach combines internal and external roaming using a stratum virtual surface and lightweight loading.

## Key findings

- A three-dimensional roaming engine was developed to connect internal and external roaming of 3D stratum models.
- The method uses a stratum virtual surface for boundary identification and efficient switching between roaming modes.
- Lightweight loading enhances performance and provides more intuitive geological information for engineering applications.

## Abstract

3D stratum roaming can visualize the complex geomorphology, underground structure and stratum distribution of geotechnical engineering. Conventional 3D stratum roaming technology is generally aimed at roaming outside the 3D stratum model but rarely roams inside the 3D stratum model, and the efficiency of switching between external and internal roaming is low. In practical engineering, especially in geological and geotechnical engineering, the underground structure and stratum situation are critical. Therefore, focusing on this problem, this paper adopts a three-dimensional roaming engine to connect the inside and outside of a three-dimensional model. Based on an internal and external boundary identification method, the combination of external roaming and internal roaming of the three-dimensional stratum model is implemented by using a stratum virtual surface, and lightweight loading is carried out by controlling the stratum virtual surface to establish the internal and external roaming of the 3D stratum model, and to give full play to the advantages of lightweight loading to provide more intuitive and comprehensive geological information for the project.