| 摘要 |
A method and apparatus for computing routes and distances on displayable, computerized maps are disclosed. The apparatus includes a user interface (106) configured to detect a first user touch on a touchscreen (104) indicating a starting point (304) on a map displayed on the touchscreen (104). The user interface (106) also detects a second user touch on the touchscreen (104) tracing an approximate route (306) on the map between the starting point (304) and an end-point (308), and detects a third user touch on the screen indicating the end-point (308). A processor, in cooperation with the user interface, determines and displays on the touchscreen a roadway route (310) between the starting and end-points. The roadway route (310) is based on the approximate route (306) traced on the touchscreen (104). The distance of the roadway route (310) may also be displayed.
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