| 摘要 |
An activity system is for drawing and/or writing on a fixed medium and includes a drawing device manually operable by a user. The drawing device forms first graphic lines of a first color on the medium and second graphic lines of a second color on the medium such that the second line is spaced apart from and extends generally parallel with the first line. A viewer is preferably wearable on a user's head and includes a first transparent portion of the first color and a second transparent portion of the second color, the first and second lines formed by the drawing device being viewable by through the two transparent portions. The first transparent portion filters light of the first color and the second transparent portion filters light of the second color, such that the user experiences a mental impression that the first and second line are disposed in separate, spaced apart planes.
|
