Straight edges

[klaxxon]

Hello!
Is there a way to get some straight edges
if an image rotated a few degrees?

[pdnnoob]

Raster images are made up of a pixel grid, so things work rectangularly. You can't technically make a straight diagonal line here. HOWEVER, you can make an illusion of a straight edge through anti alias. There are several ways to do this, but here's what I recommend:

1. Install the http://forums.getpaint.net/index.php?showtopic=7644'>Basic Antialias plugin

2. Put the second image (the one on top) on its own layer

3. Run Basic Antialias (Effects>Object>Basic Antialias)

[klaxxon]

Thank you @pdnnoob but does not work.
I did as you said but the result is below.
Could you processed image shows an example of you?

[barbieq25]

Hmm, I have never used that plugin but your image now has like a drop shadow of black with white jagged lines showing.

 

I usually deal with jaggies this way;

 

1. Increase the image by 4 times the size I want the finished image to be.

2. Run a Gaussian Blur at default

or

Use BoltBait's Feather plugin (sorry you will have to search for it as I don't have time right now)

then use AA Assistant

 

You need to make sure that both your images are on their own layer & run the plugins on both. 

 

I hope this makes sense in such a short time but I have to run...

[pdnnoob]

Hmmm...try using the AA's Assistant plugin, instead of basic antialias, then...

[OddLlama]

The outline object plugin with antialiasing?

[yellowman]

I am not sure what method you have used to rotate the image, but:

 

 

1- Make the selection few pixels bigger than the photo from all sides (beyond the edges) then rotate using Move Selected Pixels

2- Make sure the Quality of Move Selected Pixels    is set to Smooth not Pixelated

3- Try also the layer Rotate/Zoom in some cased it works well.

[klaxxon]

I used resize image and canvas size middle and I increase width and height for 2 pixels.
Than I rotated using Move Selected Pixels. I used smooth not pixelated.
I use this method to present covers of books.
Until now I have used vertical display, but I thought to do this little trick.
Unfortunately it did not work. Edges appear jagged.
I think it was too low resolution.
Thank you all, for your help.

[Noswad]

Here's what I did..

 

1. Put picture that needs to rotate on it's own layer.

2. Rotate.

3. Run AA's_Assistant , Soften edges checked, Sharpness at 3.00, Gamma at 2.00, Offset at 1.00

4. Repeat using AA's_Assistant at those levels until edges are smooth.

 

This worked for me.

[klaxxon]

When I rotate cover without resize is out of layer.
It is posible in Paint.NET to enlarge layer automaticaly to fit the image rotated?
 

Edited December 12, 2012 by klaxxon

[Noswad]

Not without cutting the corners of the book off **as far as I know**.

[pdnnoob]

Increase the canvas size manually (ctrl+shift+r) before you rotate the image. Paint.net won't automatically change the canvas size for you.

[klaxxon]

Ok, I understood, thank you all.

Edited December 12, 2012 by klaxxon