| 摘要 |
<p>A center of rotation may automatically be selected for graphically displayed data based on what is determined to be of interest to the user, the current display of the data, and other parameters. For example, if a user has selected a portion of data, the center of rotation may be within the center of the selected data. If a user has positioned a cursor within a portion of displayed data, the center of rotation may be the center of the data portion including the cursor. If the data as a whole is approximately centered about the graphical coordinate origin, or within a threshold of the origin, the data may be rotated about the origin. If the data as a whole is approximately centered at least a certain distance away from the graphical coordinate origin, the data may be rotated about the center of the data as a whole.</p> |
