to fellow script coders.

trandoductin · **Posted:** Sun Sep 20, 2015 12:32 pm **(#1)**

Are you ever in a mood or have the urge to write (I usually do a lot of cutting and pasting) a scheme script?
I am having that mood right now..but have no idea what to write hehehe.
It's a strong urge right now though almost like a hunger.

I just wish i had something to write like not too easy, but not too difficult either.

jontait2 · **Joined:** Dec 27, 2014 **Posts:** 508

Now you come to mention it..
There was a new user on gimpforums.com asking for a camera shutter transition effect to use in between video sequences.
A quick search revealed this old tute on gimptalk:
http://www.gimptalk.com/index.php?/topi ... iris-tute/
But I reckon that could be done better (and with lots more styles and options) in a good script.
Just a thought.

trandoductin · **Posted:** Sun Sep 20, 2015 1:04 pm **(#3)**

maybe i'll save that for a keener day :hehe

I don't feel that keen right now.

ofnuts · **Joined:** Oct 25, 2010 **Posts:** 4756

trandoductin wrote:

Are you ever in a mood or have the urge to write (I usually do a lot of cutting and pasting) a scheme script?

My family has instructions to kill me on the spot if this ever happens.

But a Python script, yes... in fact I thought about a script all weekend. But then I convinced myself that the math was against me, the script was not workable.

trandoductin · **Posted:** Sun Sep 20, 2015 4:53 pm **(#5)**

ofnuts wrote:

My family has instructions to kill me on the spot if this ever happens.

Rod · **Joined:** May 16, 2010 **Posts:** 14709 **Location:** USA

Quote:

My family has instructions to kill me on the spot if this ever happens.

How about a really nice lens flare script?

2-ton · **Posted:** Mon Sep 21, 2015 8:52 pm **(#7)**

Oh yes, lens flares with slider bars for lots of parameters!

PegLeg44 · **Joined:** Feb 14, 2012 **Posts:** 426

There's this thing that I do all the time that I wish could be made into a script.

1. I start with a pen line.
2. Go into Quick Mask and invert it so that the red is gone.
3. Select Default black foreground.
4. go to [Edit] [stroke path] no antialiasing line width of 1
5. Select the red line and use [Select] [Border] on it and change the pixels to any number that suits me and use feather boarder. (this gives me a nice even increase in pixels from red in the middle to opaque around the sides after I paist in the foreground color to it).
6. Then I use a saved curve on the quick mask canvas to make the increase in pixels go rounded from opaque to red (kind of rounded inward to a sharp peak.
7. Then I invert the quick mask and exit.

I use these kinds of selections along with the airbrush tool to put creases into colors etc. Like in this image, I used it on the fingers and elbows etc.

trandoductin · **Posted:** Mon Sep 21, 2015 10:51 pm **(#9)**

PegLeg44 wrote:

There's this thing that I do all the time that I wish could be made into a script.

1. I start with a pen line.
2. Go into Quick Mask and invert it so that the red is gone.
3. Select Default black foreground.
4. go to [Edit] [stroke path] no antialiasing line width of 1
5. Select the red line and use [Select] [Border] on it and change the pixels to any number that suits me and use feather boarder. (this gives me a nice even increase in pixels from red in the middle to opaque around the sides after I paist in the foreground color to it).
6. Then I use a saved curve on the quick mask canvas to make the increase in pixels go rounded from opaque to red (kind of rounded inward to a sharp peak.
7. Then I invert the quick mask and exit.

I use these kinds of selections along with the airbrush tool to put creases into colors etc. Like in this image, I used it on the fingers and elbows etc.

I don't know enough to even perform these steps myself.

PegLeg44 · **Joined:** Feb 14, 2012 **Posts:** 426

It's all done to make a sharp edged selection which I then use as a mask to lighten up or create creases using the air brush. I could try to explain it step by step with images.

trandoductin · **Posted:** Tue Sep 22, 2015 11:34 am **(#11)**

PegLeg44 wrote:

It's all done to make a sharp edged selection which I then use as a mask to lighten up or create creases using the air brush. I could try to explain it step by step with images.

yeah that would help, if you can help me understand step by step and i can do it manually myself,
that would help in writing the script :hehe

trandoductin · **Posted:** Tue Sep 22, 2015 9:28 pm **(#12)**

can't wait to see explaination with images so i can get started.

PegLeg44 · **Joined:** Feb 14, 2012 **Posts:** 426

I'll put something together tomorrow. Kind of late right now.

trandoductin · **Posted:** Tue Sep 22, 2015 10:23 pm **(#14)**

okay

PegLeg44 · **Joined:** Feb 14, 2012 **Posts:** 426

If this script is possible maybe it would be easier to have the script use a layer instead of quick mask like this:

1. Here's the path that I want to turn into a sharp selection:

Attachment:

Sharp1.png [ 22.57 KiB | Viewed 1182 times ]

2. Create a new white layer:

Attachment:

Sharp2.png [ 44.55 KiB | Viewed 1182 times ]

3. Stroke the path with no antialiasing and a line width of 1px:

Attachment:

Sharp3.png [ 64.46 KiB | Viewed 1182 times ]

PegLeg44 · **Joined:** Feb 14, 2012 **Posts:** 426

4. Color Menu [Color to Alpha]:

Attachment:

Sharp4.png [ 56.16 KiB | Viewed 1182 times ]

5. Layer Menu [Transparency] [Alpha to Selection]:

Attachment:

Sharp5.png [ 62.06 KiB | Viewed 1182 times ]

6. [Selection] [Border] This needs to be interactive:

Attachment:

Sharp6.png [ 55.51 KiB | Viewed 1182 times ]

PegLeg44 · **Joined:** Feb 14, 2012 **Posts:** 426

7. Delete the active layer and create a new white layer:

Attachment:

Sharp7.png [ 41.04 KiB | Viewed 1182 times ]

8. Then paste in the default black forground color [Edit] [Fill with FG Color] (maybe the script can do a "D" foreground black background white first):

Attachment:

Sharp8.png [ 78.38 KiB | Viewed 1182 times ]

9. Unselect all [Ctrl+A].

10. Do a Curves function with a saved preset curve like this one to make the color sharp to a point of black:

Attachment:

Sharp9.png [ 101.5 KiB | Viewed 1182 times ]

11. Then do a color to alpha [Colors] [Color to Alpha].

12. Then a [Layer] [Transparency] [Alpha to Selection].

PegLeg44 · **Joined:** Feb 14, 2012 **Posts:** 426

13. Then just delete the layer and your left with a sharp selection mask that can be used to draw creases etc.

Attachment:

Sharp92.png [ 44.81 KiB | Viewed 1182 times ]

PegLeg44 · **Joined:** Feb 14, 2012 **Posts:** 426

I've just found that if you can use the quick mask in the script it would cut down the number of steps signigficantly.

1. Start with a path and go to quick mask mode and turn the forground color to white [ "D" then "X"] and then perform a Stroke Path on it with no antialiasing and 1px:

Attachment:

quick2.png [ 227.23 KiB | Viewed 1179 times ]

2. Go out of Quick Mask and perform the [Select] [Border] function on it which would need to be interactive:

Attachment:

quick3.png [ 221.3 KiB | Viewed 1179 times ]

3. Then go back into quick mask mode and perform the curves function on it to make it sharp:

Attachment:

quick4.png [ 243.18 KiB | Viewed 1179 times ]

4. Then just exit quick mask mode and you have a selection ready to go.

trandoductin · **Posted:** Wed Sep 23, 2015 11:42 am **(#20)**

i am trying to do your 1st method manually and was confused about step 13.
after i do alpha to selection and deleted i am left with this.

is that right or did i miss something.

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