Expand/Contract Selection

[aguba]

Would it be possible to create a plugin that can expand or contract a selection?

[Crazy Man Dan]

1) Firstly, there's an old discussion about this here: http://paintdotnet.12.forumer.com/viewtopic.php?t=3178

2) Plugins cannot affect selection boundaries.

[aguba]

...darn. Well, I guess I can find some kind of work around. Thanks anyway.

[Ash]

Did I misunderstand?

MIght be doable.

http://paintdotnet.12.forumer.com/viewt ... 0623#20623

[Crazy Man Dan]

Did I misunderstand?

I don't know if you misunderstood. All I know is I didn't understand.

[Ash]

So thats why nobody has made a plugin that can affect selection yet LOL

[moc426]

No you can't resize a selection.

http://paintdotnet.12.forumer.com/viewtopic.php?t=4814

So thats why nobody has made a plugin that can affect selection yet LOL

[BoltBait]

There is a fairly easy way to increase a selection by a desired number of pixels.

Once you have your selection just do the following:

1) Create a new layer and select it

2) Press the backspace key to fill your selection with your primary color

3) Press ESC to deselect

4) Gaussian Blur by your desired expansion level

5) Set your tolerance to 0, then Shift-Click a totally transparent pixel using the magic wand

6) Press Ctrl-I to invert your selection

7) Delete your temporary layer

You are now back to your original layer and your selection has expanded by the number of pixels you specified to Gaussian Blur.

[aguba]

Thanks. That'll work.

[BoltBait]

There is a fairly easy way to decrease a selection by a desired number of pixels.

Once you have your selection just do the following:

1) Create a new layer and select it

2) Press Ctrl-I to invert your selection

3) Press the backspace key to fill your selection with your primary color

3) Press ESC to deselect

4) Gaussian Blur by your desired expansion level

5) Set your tolerance to 0, then Shift-Click a totally transparent pixel using the magic wand

7) Delete your temporary layer

You are now back to your original layer and your selection has contracted by the number of pixels you specified to Gaussian Blur.

(No, this is not a double post. )

[aguba]

Your directions are a little off, but I think I understand the gist of what you're saying.

[penguin]

he's basically saying take a big square, and make it bigger or smaller. then select it, and delete it, but keep the selection.

you oculd just use the little pixel counter/coordinate thingy in the corner

[aguba]

No, I'm saying select an object and adjust the size of the selection, not the object. I know you can do this manually, but It doesn't work so well with more complex images.

[barkbark00]

Yeah, in PdN, BoltBait's blur method is the best way to expand a selection. To contract, try messing with Median Blur with a relatively low radius and the percetile set to either 0 or 100(depending on if you filled you original selection with white or black), then continue with BB's other steps...

[aguba]

I don't wan't to expand a selected object, just the selecty thing with the moving broken lines.

[pyrochild]

That's exactly what BoltBait's method does.

[aguba]

BB's method confuses me.

[barkbark00]

I don't wan't to expand a selected object, just the selecty thing with the moving broken lines.

We all realize that! What we are telling you is, what we in the software world like to call, a "workaround"...

[BoltBait]

BB's method confuses me.

If you follow the steps carefully once or twice, you'll be to the point where it is automatic.

I know it shows 7 steps, but it takes less than 10 seconds to do the whole thing.

Maybe I could add screen shots. Would that help?

[aguba]

Yes, please

[XLT]

I hope I'm not too off here, but how could I expand this emoticon?

[Crazy Man Dan]

@XLT:

Resize using Nearest Neighbor resampling. For best results, resize by percent in increments of 100.

[EvilNeko]

I always take the Magic Wand or whatever, and press Control+selection tool(your choice). Both will get selected..

~EnM

[Tim Rayner]

So here's a question: Is paint.net still being developed? Is it being developed by the original developer or by the community? Bearing in mind this is a feature that has been available to me in all or most of the decent graphics packages available to me in recent years why does Paint.net not have it?

You shouldn't have to use a workaround to do something so basic.

[Ego Eram Reputo]

6 hours ago, Tim Rayner said:

Is paint.net still being developed?

 

Yes.

 

6 hours ago, Tim Rayner said:

Is it being developed by the original developer or by the community?

 

The original developer.

 

6 hours ago, Tim Rayner said:

why does Paint.net not have it?

 

There are higher priorities. Simple as that.

 

Now, because this thread is 13 years old I'm locking it as per our Forum Rules. I think this might be a record for the oldest necropost.