Comments:Slider Tool

Tips

Flexible Bounds

A normal slider can just be defined for a constant interval, i.e. the interval can't be influenced by worksheet variables. But sometimes it's necessary to create a slider for the user with flexible bounds, let's say from a to b. That's not possible directly, but one can achieve a similar effect:

1. Create a slider t in the interval [0, 1]
2. Use interpolation to calculate the "real value" c (in the interval [a, b]):

   c = a + (b - a) * t

3. Hide the label of the slider
4. Place a text object with the content "c = " + c at the old label's position

Such a slider works almost exactly like the normal one (exception: the label isn't moving, that needs some additional work), so your users probably won't notice.