Research on the Interaction Technique of Three-dimension Under the Desktop Virtual Learning Environment

The interaction technique of 3D(Three-dimension) is the essence of the virtual reality system research and good interaction can promote learners' experience swiftly.The article put forwards "geometry navigation","selection manipulation","collaborative interaction" as three logical levels via the systematic analysis of three-dimensional interaction tasks,based on the practical application of teaching.And on this basis,it constructs the system of interactive 3D graphics construction under the virtual circumstance and presents the developing procedure of the interaction technique of 3D,which primarily can solve the problems with the interaction technique of 3D,aimed to promote the result of the learning under the virtual circumstance.