Based on fully analyzing the current 3D data structures, the paper compares the advantages with disadvantages among the traditional models Then In the light of the feature of spatial object modeling, a 3D data model based-OO is designed Considering the practicality and expansibility of the software, 3D interactive design and data management are emphatically discusse

In this paper, the authors studied the theory, technique and method of the 3D interactive techniques in the volu.

Study on 3D-interaction and analytical techniques for solid models of geological entities;

This paper introduces the general operations for 3D-interaction of the solid models of geological structures.

It also supports the powerful 3D interaction such as drag- dropping,rotating and picking.

The paper begins from current status of animation in multimedia courseware,and discusses the technology of 3D modeling,3D interaction,browse through 3D scene in internet-based courseware;publishing on internet.

For planning assembly path for its complicated part, it needs better 3D interaction environment and user interface to make interactive operation.

This paper aims at 3D interaction task analysis and construction, summarizes interaction tasks in 3D interaction field, presents the integration process from basic interaction tasks to universal interaction tasks in 3D/VR application, and finally constructs a core toolkit which can be widely used in 3D interaction field.

A hierarchical model is presented based on current human computer interaction and 3D interaction especially.