| 摘要 |
The invention provides a method for constructing a zoom path between a predetermined viewing point Pn+1 in a three-dimensional (3D) virtual space and a target point P0 in the 3D space, and for zooming in or zooming out along the zoom path. The target point is assigned control points in the 3D space, and the zoom path of the invention is nonlinear and passes through at least one of the control points. During zooming, the viewing direction is continuously selected to provide an aesthetically acceptable zooming effect. |
