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GUM The Gimp User Manual version 1.0.0 Karin Kylander & Olof S Kylander legalities Legalities The Gimp user manual may be reproduced and distributed, subject to the fol- lowing conditions: Copyright © 1997 1998 by Karin Kylander Copyright © 1998 by Olof S Kylander E-mail: [email protected] (summer 98 [email protected]) The Gimp User Manual is an open document; you may reproduce it under the terms of the Graphic Documentation Project Copying Licence (aka GDPL) as published by Frozenriver. This document is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANT- ABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Graphic Documentation Project Copying License for more details. GRAPHIC DOCUMENTATION PROJECT COPYING LICENSE The following copyright license applies to all works by the Graphic Docu- mentation Project. Please read the license carefully---it is similar to the GNU General Public License, but there are several conditions in it that differ from what you may be used to. The Graphic Documentation Project manuals may be reproduced and distrib- uted in whole, subject to the following conditions: The Gimp User Manual Page i Legalities All Graphic Documentation Project manuals are copyrighted by their respective authors. THEY ARE NOT IN THE PUBLIC DOMAIN. • The copyright notice above and this permission notice must be preserved complete. • All work done under the Graphic Documentation Project Copying License must be available in source code for anyone who wants to obtain it. The source code for a work means the preferred form of the work for making modifications to it. For a manual this means the the preferred format for the program that the author has used to create the work in. • Any translation or derivative work of Graphic Documentation Project manuals that is published in any form must be approved by the author before distribution. All alterations of the original manu- script like editing to prepare for printing, making modifications to images, adding or removing text etc. is considered derivative work. • Small portions may be reproduced as illustrations for reviews or quotes in other works without this permission notice if proper citation is given. • If you have permission to make a translation or derivative work of a manual, then the preferred source code of the work must be made public under the terms of the Graphic Documentation Project Copy- ing License. This license is based on the Linux Documentation Project Copying License Printing guidelines Whoever wishes to print this manual for commercial purposes it is free to do so, as long as it is made in accordance with the GDPL licence. However, if you would like to distribute a translation or derivative work based on a GDP manual, you must obtain permission from the author before doing so. As the authors of this manual we naturally want such a publication to be a high quality product. We therefore encourage interested parties to contact us before printing. If you do publish the Gimp User Manual, we would appreciate if you would send us a copy, so we can review it at our website www.fro- zenriver.com. If you don’t, we can’t encourage anyone to buy it. If someone wants to cooperate with Frozenriver to make a printed version, then this version will be given Official status as the certified GUM publication which is supported and approved by the authors. This will be mentioned at our website and also stated on the cover. The official version will also include a color calibration kit. You may ask yourself why this issue is so important? The reason for our concern is that GUM is not an ordinary user manual for some shell utility, mail reader etc. but for an advanced image manipulation pro- gram. The manual contains more than 400 informative images which are necessary for grasping the con- text. There are for example certain chapters, where crucial images would be rendered meaningless in b/w or in a low resolution printing. These facts alone make it very important that a printed edition should raise, not lower the standard of the on-line version. Another reason is that we at Frozenriver wrote this manual to provide all Gimp users with free information, but also to show that our work stands for high quality, and we do not wish to be associated with a product that might damage that impression. Pageii The Gimp User Manual Graphic Documentation Project Copying License You may also bear in mind that we do not consider the PS, PDP, FM or HTML versions to be ready for commercial printing. The Gimp User Manual will need further editing and proofing before it’s ready for commercial printing. We hope that you can respect our wishes. The Gimp User Manual Page iii Legalities Pageiv The Gimp User Manual overview O Legalities i Preface xxxvii Frozenriver and the authors of GUM xxxix Contributions xli Changelog and TODO xliii How to read GUM xlv Part I About Gimp 1 1 What is Gimp? 3 2 Default short cuts and dynamic keybinding 9 Gallery 17 3 Gimp around in 80 minutes 19 Part II Gimp installation 41 4 Obtaining and Installing Gimp 43 Part III Basic functions 51 5 Files and Preferences 53 29Edge detect filters 283 6 Selection tools 75 30Enhance filters 287 7 Paint Tools 89 31Generic filters 293 8 Edit & View 101 32Glass effect filters 301 9 Transform Tools 107 33Light effect filters 305 10Text and fonts 115 34Map filters 321 12Brushes, Gradients and Patterns 119 35Misc. Filters 337 36Noise filters 341 Part IV Color knowlage 127 37Render filters 345 13Color Models 129 14Pre-press and color in Gimp 135 Part VII Animations 379 38Advanced animation 381 Part V Extend Gimp 155 15Image Menu 157 Part VIII Script-Fu 393 16Selection menu 181 39Script-Fu; description and function 395 17Modes 187 40Writing a Script Fu 405 18Layers 199 41Mike Terry’s school of Script-Fu 419 20Channels, Floating Selections and Duotones 211 Part IX Adv installations 439 Part VI Filters 221 42How to get fonts to Gimp 441 43Compiling plug-ins 451 21 An introduction to filters 223 22Animation filters 227 Appendix 461 23Artistic filters 231 A Gimp start flags and rc-files 463 24Blur filters 241 B Gimp man pages 477 25 Color filters 245 C Commercial Gimp support 483 26Combine filters 257 D SIOD: Scheme reference appendix 485 27Cryptographic filters 263 E Links and References 517 28Distort filters 267 Pagevi The Gimp User Manual Index 523 The Gimp User Manual Page vii Pageviii The Gimp User Manual contents C Legalities i Graphic Documentation Project Copying License i Printing guidelines ii Preface xxxvii Frozenriver and the authors of GUM xxxix Authors xxxix Karin Kylander xxxix Olof S Kylander xxxix Frozenriver xl Contributions xli Contributions xli Gimp contributions xli GUM contributions xlii Changelog and TODO xliii Changelog xliii 1.0.0 xliii 0.9 xliii 0.8 xliv 0.7 xliv 0.6 xliv 0.5 xliv TODO xliv How to read GUM xlv an introduction xlv Preface xlv Part one xlv Gallery xlvi Part two xlvi Part three xlvi Part four xlvi Part five xlvi Part six xlvi Part seven xlvii Part eight xlvii Part nine xlvii Appendixes xlvii Conventions xlvii Part I About Gimp I Chapter 1 What is Gimp? 3 ”About The Gimp 4 Features and Capabilities 4 Authors 4 What we can say about Gimp 5 Gimp History 5 0.54 5 0.60 6 0.99 7 1.0 8 The future of Gimp 8 Pagex The Gimp User Manual Chapter 2 Default short cuts and dynamic keybinding 9 Dynamic Key bindings 10 Conventions 10 Default short cuts in Gimp. 11 Gallery 17 Chapter 3 Gimp around in 80 minutes 19 Creating Image Objects 20 A Twisted personality 21 Variations - gold and water spirits 21 Creating a simple pen and an ink stain 22 The technicolor ink spot 22 Making grooved text 23 Organic patterns 23 Handling Glass, Water and Reflections 24 The Wet look 25 Adding water 25 Making rain 25 Displacing along a curve 25 How to empty a bottle of wine 26 Cloning away unwanted parts 26 Making a dark and bright layer 26 Recreating missing parts 26 Glass Distortion 27 Rectifying banding 27 Reflections 27 Transforming a Photograph to a Drawing 28 Manage without artistic plugins 29 Instant cartoon pictures 29 Making a pencil drawing 30 From pencil to ink 30 Digital crayons 31 Light, Motion and Texture transformation 32 An Electric Horseman 33 Using a Cow to make a Leopard of a Horse... 33 Making things glow 34 The Gimp User Manual Page xi Adding motion 35 Adding scenery 35 Making a Montage 36 The Background 37 The Vignette 37 Adding Noise 38 Making an element stand out in a composition 38 Adding depth to text layers 39 Part II Gimp installation 41 Chapter 4 Obtaining and Installing Gimp 43 How to Install Gimp Personal files 44 What are all these files good for? 45 Obtaining Gimp 46 Installing a Source Distribution 46 Installing a Binary Distribution. 48 Installing Extra Packages to Extend Gimp 49 Part III Basic functions 51 Chapter 5 Files and Preferences 53 The File Menu 54 Creating Images 55 Guash 55 Opening Files 57 Opening Postscript and PDF Files 58 Saving Images 58 Supported File Formats 59 Save dialogs 62 GBR 62 GIcon 62 GIF 63 jPEG 64 PAT 64 Pagexii The Gimp User Manual PNG 65 PNM 65 PostScript & EPS 65 SunRas 66 TGA 66 TIFF 67 Xpm 67 Mailing Images 67 Printing Images 68 Supported printers 68 Settings 68 Gimp Preferences 69 Display 69 Interface 70 Environment 70 Directories 71 Suggestions 71 Misc.