On Tuesday, 9 Nov 1999, Sven Neumann wrote:
> Intelligent Scissors:
> [ cursors are broken here? ]
Depends what you think cursors should be doing. I do nothing special
to the cursor for iscissors. You're welcome to do something better.
> [ no modifiers used ]
Not true: the intent is that it should behave as a selection tool, so
on click: <Shift> add
<Ctrl> subtract
<Shift>+<Ctrl> intersect
This is on the final click inside the closed boundary which converts
it to an actual selection. I haven't checked the code, but that was
the intent.
> Blend:
> <Shift> 15 degrees steps
> <Ctrl> horizontal
> <Alt> vertical
> <Ctrl>+<Alt> diagonal (45 degress)
Opinion: these could all be merged in to a single "constrain to 15 degree"
modifier, since horiz and vert are special cases of this. I think
this is what MacPaint did, and it seemed to work well.
Again, I'd recommend someone finding out what PhotoShop's modifiers
do, and just blatantly copy them. I have two reasons for this:
a) people used to PS will like this.
b) some team at Adobe has already done usability testing -
we can reuse their work.
Good luck in getting a consistent set of modifiers out!
Austin
