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Crossing-based interfaces are graphical user interfaces that use crossing gestures instead of, or in complement to, pointing. ==Goal-crossing tasks== A pointing task involves moving a cursor inside a graphical object and pressing a button, whereas a goal-crossing task involves moving a cursor beyond a boundary of a targeted graphical object. Goal crossing has been little investigated, despite sometimes being used on today's interfaces (e.g., mouse-over effects, hierarchical menus navigation, auto-retractable taskbars and hot corners). Still, several advantages of crossing over pointing have been identified: * Elongated objects such as hyperlinks are faster to cross than to point. * Several objects can be crossed at the same time within the same gesture. * Crossing allows triggering actions when buttons are not available (e.g., while an object is being dragged). * Crossing-based widgets can be designed to be more compact than pointing-based ones. This may be useful for small display devices. * Goal crossing is particularly natural on stylus-based devices. On these devices, crossing an object back and forth is easier than double-clicking. * Crossing can be a good alternative for users who have difficulties with clicking or double-clicking. There are several other ways of triggering actions in user interfaces, either graphic (gestures) and non-graphic (keyboard shortcuts, speech commands). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Crossing-based interface」の詳細全文を読む スポンサード リンク
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