Test viewer ability to pick the graphical primitives of a 'grobject' APS without a 'region' APS attribute.
At the start of the test, the right-hand frame should display a WebCGM instance containing a simple picture with two cylindrical objects (APS of type 'grobject'). and a red triangle, all with thick black borders. Each of the objects contains a hyperlink to a local HTML file instance. The hyperlink is a 'linkuri' APS attribute whose first parameter (URI) points to the HTML file instance. The second (Link Title) and third (Behavior) parameters are null.
The objects do not contain 'region' APS attributes. Therefore according to WebCGM, they are picked and their hyperlinks are activated by a mouse click on the graphical primitives that comprise the object. The two cylinders look identical, except that the right-hand one is a CGM filled-area object, and the left-hand one is a collection of line-drawing primitives in a somewhat random order.
Therefore, according to the rules of WebCGM, the right-hand object should be picked by clicking the mouse anywhere on or within the interior of the drawn object. The left-hand object should be picked only by clicking the mouse somewhere directly on the lines which draw the object.
Viewers are required to give visual feedback to the user that a successful pick has occurred, and an indication of the particular object which has been picked. The exact method of feedback is viewer dependent.
The initial view in the left-hand frame is a PNG reference image of the text content of the HTML file that should appear in the left-hand frame, upon execution of the link. The style and layout of the HTML text may vary from the reference image, and are not part of the pass/fail criteria of this test.