GPLv2+

Draw arrow

B-Ranger — Wed, 11 Nov 2009 16:47:35 +0100

Update [11/15/2009] : Added fixed brush width and double headed error, removed bug 1) one-point-paths, 2) horizontal paths
Update [11/16/2009] : Fixed image type restriction string
Update [11/19/2009] : Added feature for absolute wing length, fixed handling gray-scale images

This plugin enables GIMP to draw an arbitrary arrow into an image or a new layer. The plugin has reasonable default values for every paramtere but is freely adjustable to ones needs. Parameters are:

wing length and line width freely adjustable (relative & absolute)
angle between arrow tail and wing
optional draw arrow in new layer
optional filled or not filled head
optional notch in arrow head
optional delete used path
optional draw double headed arrow

Usage:
Create a path (usually <B>) with the head of the arrow (first anchor point) and the end of the tail (second anchor point). Then call the script which adds itself to the "Tools" menu (I use <AltGr+P> as the shortcut as "Pfeil" is the german word for arrow).

ToDo:

Write documentation (any one can help me with that and knows how to?)
Open for suggestions
Enable a more angularly arrow

You can also contact me via ICQ #52712314 and Jabber/XMPP Hoffmann.P@jabber.ccc.de

Calendar maker

saulgoode — Mon, 09 Nov 2009 14:10:26 +0100

The script I've written adds two layers to an image which overlay the active layer with dates and a grid of lines producing a calendar for the specified month. It is not so much intended to create a complete calendar, but to be used as a tool in creating calendars. The command appears in the menus as "Filters->Render->Calendar..."

The options presented in the dialog are:
* Month - the month to be used
* Year - the year to be used
* Sunday first - if checked then Sunday is the first day of the week, otherwise Monday
* Font - the font to be used
* Fontsize - The size of the numbers used for the dates. 100% will use the largest possible
* Right justify - If checked then the date will be right-justified in a field two characters wide
* Border width - determines how thick the lines of the grid will be (can be "0" for no grid)
* Border color - color used for grid (note: FG color is used for the text)
* Date position - the alignment of the date number within its box

The month and year are not generated on the image; they should be added to the image manually if desired. For reference, the month and year appear in the layer names of the newly created layers.

EDIT: When called from the PDB, the script will return a list containing the "dates" layerID and the "grid" layerID.

EDIT2: I have updated the script and added a "Layout" option which offers the following treatments of the dates:

* Allow 6 weeks (resizing text for optimal fit)
* Force 6 weeks (use six rows of weeks in all cases, even for a 4-week February)
* Wrap week 6 to week 1 (the approach proposed by wbool)
* Wrap week 6 to week 5 (and if needed compressing two days into a single cell)

Smooth Path (new)

ijontichy — Thu, 05 Nov 2009 23:38:10 +0100

This plugin will take the active path and smooth it, using a Bezier
interpolation algorithm. If you've ever wanted to define a bunch of
points, and then have the GIMP draw a smooth path through them, this
plugin is for you. There is the option to smooth corners between a
range of angles.

Settings include:

Smooth only specified corners: If checked,
only corners whose interior angles lie between the two settings below
will be smoothed.
Minimum angle: Corners blunter (greater) than
this angle will be smoothed.
Maximum angle: Corners sharper (less) than this
angle will be smoothed.

This plugin creates a new entry in the Paths dialog right-click menu.

For details of the algorithm used in this plugin, see here:

http://www.math.ucla.edu/~baker/java/hoefer/Spline.htm

Be sure to read the readme.txt file for installation and user help.

Thanks to Rob Antonishen for his valuable contributions.

Voronoi Path

ijontichy — Thu, 05 Nov 2009 04:43:45 +0100

This plugin will take a set of points (specified with the Path tool) from which it will generate a Voronoi diagram in the form of a new path. There is the option to preserve the original points as a separate path, and a hack is used to ensure these original points can be stroked (assuming a round or square cap style). The algorithm used is described here:

http://en.wikipedia.org/wiki/Fortune%27s_algorithm

This plugin creates a new entry in the Paths dialog right-click menu.

Be sure to read the readme.txt file for installation and user help.

Stroke Path with Taper

ijontichy — Mon, 26 Oct 2009 02:49:19 +0100

This plugin will create a stroke with a taper, or in other words, a stroke with a start width and an end width, rather than just a constant width. There is an existing plugin that does the same, but this one is a bit faster (although still slow), and has a lot more options.

Settings include start width, end width, exponent (how rapidly the line width changes from start to end), tolerance (there is a inverse relation between speed and accuracy), as well as nearly all the line styles available with the regular GIMP stroke function (e.g. cap/join style).

Be sure to read the readme.txt file for installation and user help.

Curve Bend Between Paths

ffaat — Thu, 08 Oct 2009 21:41:33 +0200

This is a simplified front end to the curve bend script to help in straightening a distorted image. Create two paths with a maximum of 17 nodes each (drawn from left to right) tracing the existing image top and bottom curve, and it the script will calculate the curve bend parameters and run it to straighten the image.

After running the script, you can crop as desired, or perform further correction by shearing, or rotating the image by 90 degrees, drawing two new paths and running the script again

Image in sample was provided by lontarm at gimptalk.

EDIT: I have updated the script so it gets the curve a bit better. As some distortions are wonky, I have also added a slider to let you adjust the correction. The default is 0 (none), positive is more correction, -ve is less correction. This should let you dial in more problematic images without having to fudge the curves.

-Rob A>

Smooth Path

ijontichy — Thu, 01 Oct 2009 07:03:33 +0200

UPDATE

Replaced by a new version here http://registry.gimp.org/node/20069
sorry if for a technical issue i can't just update this page

Scanlines2.py by Werner Hartnagel

mahvin — Thu, 24 Sep 2009 23:29:50 +0200

This python plug-in was part of Python archive found at Werner Hartnagel's sourceforge site located at:

http://python-fu.sourceforge.net/

I had to define a second pattern layer (pat_lay2 - "Scanlines2") in order to keep the plugin from throwing an error when the mask option is set to NO. The error indicated that the layer had already been added to the image, so it appears gimp_edit_clear wasn't clearing the pat_lay from memory, just from the image. To offset the error, the newly pat_lay2 substitutes for pat_lay and adds a transparent empty layer named scanlines2 to the top of the layer dialog. Using the mask option works without errors.

I got this plugin working with Vista 64, Vista 32, XP on GIMP 2.6.7

Pyinyang_2.3.py by Werner Hartnagel (Now Working)

mahvin — Thu, 24 Sep 2009 23:15:32 +0200

I made modifications to this Python plugin to get it working. It came with the python plug-in package found at:http://python-fu.sourceforge.net/You can get the modified plugin below.

Usage: Install it in the GIMP plug-ins folder. Top two text input is for new file size - width, height. If you want to use pictures for the eyes, click yes, and type in the image names. While testing this I found that any image used must be in your default image folder for GIMP, leaving one image textbox blank produced errors. You must type out the full filename and extension of those images in both textboxes. You can use the same image for both eyes, just be sure to add the filename to both boxes.

Working on Vista 64 bit, Vista 32 bit, and XP on GIMP 2.6.7. I haven't tested it on Ubuntu, yet.

List Guides

ffaat — Tue, 01 Sep 2009 14:54:11 +0200

Simple script that generates a sorted list of all the guides in an image, grouped by horizontal and vertical.

-Rob A>