Objects and groups can be linked to variable tags in such a way that rotational sliding of the object/group changes the value of the tag. As the slider rotates clockwise, the variable tag increases in value. As the slider rotates anti-clockwise, the variable tag decreases in value. The slider also moves automatically to reflect the changing values of the tag.
Note: The rotational slider cannot be used if either of the other sliders is enabled, or if rotational movement is enabled.
Objects and groups have the following rotational slider properties.
Tag
The value of the tag entered in this field (79 characters maximum) will change as the slider is rotated. You can define two slider limits on your graphics page. The object/group will not rotate beyond these two points. During runtime, when the slider reaches its anti-clockwise limit (Offset At minimum), the tag value changes to its minimum limit. When the slider reaches its clockwise limit (Offset At maximum), the tag value changes to its maximum limit.
To insert a tag, click the Wizard button to the right of this field.
[Tag] Continuous update of tag
Select this box if you want the variable tag to be updated continuously while the slider is being moved. If you do not select this box, the tag will only be updated when the slider has been released (i.e. it has been moved, and the operator has released the mouse button).
[Angle] At minimum
Enter an anti-clockwise angle (in degrees relative to 0 degrees). The slider cannot rotate anti-clockwise beyond this limit. When it reaches this limit, the Tag value changes to its minimum limit.
You can change the angle value by pressing the up and down arrows to the right of the field, or by entering another value in this field.
[Angle] At maximum
Enter an clockwise angle (in degrees relative to 0 degrees). The slider cannot rotate clockwise beyond this limit. When it reaches this limit, the Tag value changes to its maximum limit.
You can change the angle value by pressing the up and down arrows to the right of the field, or by entering another value in this field.
Note:You can increase the value of the tag with an anti-clockwise slide, and decrease it with a clockwise-slide, by entering negative distances in the Angle fields.
[Center axis offset] Express
Click this radio button for the quick and easy way of selecting the point about which the object/group will rotate. The express option gives you the choice of 9 points (Top Left, Bottom Right and so on), which are displayed in the picture field on the dialog. To select one, just click it with your mouse.
[Center axis offset] Custom
Click this radio button to define your own center axis. When you select this radio button, two fields will display to the right, allowing you to plot the position of your center axis. Specify the distance to the right in the first field, and the distance down in the second. The Center axis is plotted based on these two values.
For example, if you enter 8 as the horizontal offset and 13 as the vertical, the center axis will be 8 pixels to the right and 13 pixels below the center of the object/group.
Enter negative values in the offset distance fields to move the center axis left instead of right, and up instead of down.
Note:If a group and one of its objects are both defined as sliders, the object will take precedence (i.e., only the object will operate as a slider).
See Also