Yes, if you used formulas for your curves and things.
Here is a tutorial that I wrote on how to do the armhole curves, the same methods can be used for any curves and they will reshape perfectly every time.
The True Darts tool does work very nicely. What you need to remember is that the real rotation point isn’t at the dart point, but normally quite a distance outside of the dart point.
For instance, the front shoulder dart rotation point is the Bust point but the dart point is normally 1 inch or 2.5cm above the bust point, so when you use the True Dart tool, you must ignore the dart point and use the bust point instead.
All of the darts on the front bodice can be successfully rotated to other areas using the bust point as the centre rotation point.
The shoulder dart on the bodice back is a little different. Normally the shoulder dart will be moved to the neck or the armhole, so if you create a point on the across back line, in a line from the centre line of the dart, the true dart tool works very well:
With the dart rotated closed and opened at the armhole:
If you use the rotation method on the shoulder darts, the shoulder tip point will reposition so that it isn’t in the correct position any more, making the armhole height too low or too high, like this:
To get this difference to be so little, I had to use a rotation point at the centre waist, so this isn’t really a very good example, but it will give you an idea of how the shoulder tip point can move when changing sizes and rotating points for the shoulder dart.
There are various methods of establishing the waist darts, so, depending on the method used to make them will determine the best way to true them and I very seldom use the True Dart tool for them but I’m sure it will work just as well.
Once again, the bust point is the rotation point for the front bodice and a point on the line at the armpit (at the bottom of the armhole) is normally the rotation point for the back waist darts.
I think this is a lot of information for you to get your head around for now. If you have any questions, please don’t hesitate to ask.