This should be an easy to solve but my brain has been fried the last few days. I have a slider that zooms in and zooms out a image. I want to zoom into the pixel level and zoom out to the pixel level but I have to have the thumbnail button be centered in the slider for a scale of 1.
What I have now is,
In code: // if the scale value is 1 the image is shown at original size var scale:Number = zoomSlider.value/1000; sprite.scaleX = sprite.scaleY = scale;
I set the default value to 5000 so that the button is centered in the middle but that sets the scale to 5. What I want is when I drag left (from the initial value of 5000) it should start to scale down until it gets to the minimum scale of .10. When I drag right it should start to increase the scale to 10.
The key to this question is that I have to have the thumbnail button centered in the middle of the slider and when centered the scale is 1.
If you want the scale for 0 to 10,000 (since you specified center to be 5000) as above, then use
var scale:Number = zoomSlider.value/5000;
sprite.scaleX = sprite.scaleY = scale;
Whatever be the Scale, To keep the Scale Button centered and Image scaled to 1, set the 'scale' variable to 1/2 of the max Scale value.