The problem addressed by this invention is that of resolving what occurs when a user's viewpoint comes into contact with an object residing in a three-dimensional workspace as the viewer navigates through that workspace. There are several possibilities in such a situation. For example, the viewer's viewpoint may be stopped and prevented from advancing further or it may penetrate the object. The instant invention provides a climbability property for objects in 3-D virtual environments. This property, when stored in the software along with the properties which define that object, can alter the viewer's viewpoint such that it will automatically be adjusted to simulate the behavior of climbing over the object.