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3D Selection
A right click (without any modifier keys) in the 3D window shows the 3D context menu. If the click is on a cell, that cell blinks and the cell and material submenus show items pertinent to that cell and its material. If the click is on a body, the body blinks and the cell submenu is replaced by a body submenu with similar items as the cell submenu. If the right click is on a grid tally data cell, the data popup is shown instead of the context menu.
When selecting a cell or body drawn as wireframe, the cursor must be over one of the lines constituting the wireframe, not just anywhere on the surface represented by the lines. If wireframe cells are difficult to select, the size of the Selection Mask can be changed in the 3D Control property page. The mask is the size, in pixels, of a rectangle centered at the cursor location. An object must fall within the rectangle to be selected. The object closest to the viewpoint is selected if multiple objects lie within the mask.
The blinking of the selected cell is accomplished by alternately displaying the scene with and without the cell being visible. The blink rate is set by the HighLight Blink Rate on the 3D Control property page. The page also contains a Blink Duration time; the blinking ceases after the duration time has passed. The blinking is cancelled when some actions occur, such as dismissing the Cell property sheet, or by selecting Kill Selection in the 3D context menu.
The entire model must be processed to figure out over which cell the click occurred and processed again to draw the scene with the selected cell left out. For complicated models, there may be a momentary lag before the menu appears. To prevent the delay caused by the processing, the user can choose to bypass the selection mechanism if the 3D drawing time is greater than the value in the Time Limit for Context Menu field on the 3D Control property page. When the 3D drawing requires more time than the limit, the context menu is still shown, but it lacks cell and material information.
 White Rock Science http://www.whiterockscience.com/wrs.html 505 672 1105 |
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