Gimp - 2.4 Guía Del Usuario
GNU Image Manipulation Program
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a closed path by clicking at multiple points in the image, and then clicking inside the path to create a selection. You cannot
undo the individual clicks: undoing after you are finished takes you all the way back to the starting point. For another
example, when you are working with the Text tool, you cannot undo individual letters, font changes, etc.: undoing after
you are finished removes the newly created text layer.
undo the individual clicks: undoing after you are finished takes you all the way back to the starting point. For another
example, when you are working with the Text tool, you cannot undo individual letters, font changes, etc.: undoing after
you are finished removes the newly created text layer.
Filters, and other actions performed by plugins or scripts, can be undone just like actions implemented by the GIMP core, but
this requires them to make correct use of GIMP’s Undo functions. If the code is not correct, a plugin can potentially corrupt the
Undo History, so that not only the plugin but also previous actions can no longer properly be undone. The plugins and scripts
distributed with GIMP are all believed to be set up correctly, but obviously no guarantees can be given for plugins you obtain
from other sources. Also, even if the code is correct, canceling a plugin while it is running can sometimes leave the Undo History
corrupted, so it is best to avoid this unless you have accidentally done something whose consequences are going to be very
harmful.
this requires them to make correct use of GIMP’s Undo functions. If the code is not correct, a plugin can potentially corrupt the
Undo History, so that not only the plugin but also previous actions can no longer properly be undone. The plugins and scripts
distributed with GIMP are all believed to be set up correctly, but obviously no guarantees can be given for plugins you obtain
from other sources. Also, even if the code is correct, canceling a plugin while it is running can sometimes leave the Undo History
corrupted, so it is best to avoid this unless you have accidentally done something whose consequences are going to be very
harmful.
3.4
GIMPLite Quickies
This tutorial is based on text and images Copyright © 2004 Carol Spears. The original tutorial can be found in the internet
[
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3.4.1
Intention
So, you have The GIMP installed on your computer, you need to make a quick change to an image for some project, but don’t
want to learn about computer graphics right now in order to get the image changed. Totally understandable. The GIMP is a
powerful image manipulator with many options and tools. However, it is quick and somewhat intuitive (after a time) for the small
jobs as well. Hopefully, these quickies will help you with your quick problem and help you to stay friends with The GIMP and
ready for its more complex tools and methods later, when you have the time and inspiration.
want to learn about computer graphics right now in order to get the image changed. Totally understandable. The GIMP is a
powerful image manipulator with many options and tools. However, it is quick and somewhat intuitive (after a time) for the small
jobs as well. Hopefully, these quickies will help you with your quick problem and help you to stay friends with The GIMP and
ready for its more complex tools and methods later, when you have the time and inspiration.
A couple of words about the images used here. The came from APOD [
], Astronomy Picture of the Day. The screenshots
were taken on my desktop which is sporting this APOD [
] image.
All you should need to know to start here is how to find your image and open it. (File → Open from the toolbox menu).
3.4.2
Change the Size of an Image (Scale)
Problem: you have a huge image and you want to put it nicely for viewing on a web page. The GIMP is a quick solution. Our
example image is this beauty m51_hallas_big.jpg from APOD [
example image is this beauty m51_hallas_big.jpg from APOD [
Figure 3.12: Example Image for Scaling
The first thing that you might notice is that The GIMP opens the image at a logical size for viewing. So, if your image is really big
(like the sample image) it will display it zoomed out until it fits nicely. You can tell if The GIMP has done this by the percentage
number in the title bar. Just because it looks right in this ‘View’ doesn’t mean anything.
(like the sample image) it will display it zoomed out until it fits nicely. You can tell if The GIMP has done this by the percentage
number in the title bar. Just because it looks right in this ‘View’ doesn’t mean anything.
The other thing to look at in the titlebar is the mode. If it says RGB in the title bar, you are fine. If it says Indexed or grayscale
there, you should read the Section
there, you should read the Section