| 摘要 |
<p>Information is configured in a tree structure, and an image is prepared for each node. To an image 152 of a root node, links to images of internal nodes are set. When a display area satisfies a predetermined link condition by a viewpoint moving operation to a link area "R1," the display target is switched from the image 152 to an image 154a of an internal node. To each of images 154a, 154b and 154c of internal nodes, a link to one of images 156 of leaf nodes is set. Further, an order is defined for the images of the leaf nodes so that the image can be successively fed between the leaf nodes. When the display is switched from a link area "b1" of the image 154b of the internal node to an image "b1" of a leaf node and the display is to return to the internal node after the images are successively fed to progress to an image of "c1," the area "c1" from within the image 154c is displayed.</p> |
