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<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="gimp-tool-iscissors"></a>2.7. Scissors Tool</h3>
</div>
</div>
</div>
<a id="id3321540" class="indexterm"></a>
<div class="informalfigure">
<div class="mediaobject">
<img src="../images/toolbox/toolbox-scissor.png" />
<div class="caption">
<p>
Intelligent Scissors tool icon in the Toolbox.
</p>
</div>
</div>
</div>
<p>
The Intelligent Scissors tool is an interesting piece of
equipment: it has some features in common with the Lasso,
some features in common with the Path tool, and some features all
its own. It is useful when you are trying to select a region
defined by strong color-changes at the edges. To use the
Scissors, you click to create a set of "control nodes"
at the edges of the region you are trying to select. The tool
produces a continuous curve passing through these control nodes,
following any high-contrast edges it can find. If you are lucky,
the path that the tool finds will correspond to the contour you
are trying to select.
</p>
<p>
Each time you left-click with the mouse, you create a new control
point, which is connected to the last control point by a curve
that tries to follow edges in the image. To finish, click on the
first point (the cursor changes to indicate when you are in the
right spot). You can adjust the curve by dragging the control
nodes, or by clicking to create new control nodes. When you are
satisfied, click anywhere inside the curve to convert it into a
selection.
</p>
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<img alt="[Warning]" src="../images/warning.png" />
</td>
<th align="left">Warning</th>
</tr>
<tr>
<td colspan="2" align="left" valign="top">
<p>
Be sure not to click inside the curve until you are completely
done adjusting it. Once you have converted it into a selection,
undoing takes you back to zero, and you will have to to start
constructing the curve again from scratch if you need to change
it. Also be sure not to switch to a different tool, or again all
of your carefully created control nodes will be lost.
</p>
</td>
</tr>
</table>
</div>
<p>
Unfortunately, there seem to be some problems with the
edge-following logic for this tool, with the result that the
selections it creates tend to be pretty crude in a lot of cases. A
good way to clean them up is to switch to <a href="ch04s03s05.html" title="3.5. Quick Mask">QuickMask</a> mode, and use paint tools to
paint in the problematic parts. On the whole, most people find
the Path tool to be more useful than the Scissors, because, even
though it does not have the intelligent edge-finding capability,
the paths it produces persist until you delete them, and can be
altered at any time.
</p>
<div class="simplesect" lang="en" xml:lang="en">
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<h4 class="title"><a id="id3321498"></a>How to Activate</h4>
</div>
</div>
</div>
<p>
The Intelligent Scissors can be activated from an image
menu as
<span class="guimenu">Tools</span>-><span class="guisubmenu">Selection Tools</span>-><span class="guimenuitem">Intelligent Scissors</span>;
from the Toolbox by clicking on the tool icon
<span class="guiicon">
<span class="inlinemediaobject"><img src="../images/toolbox/scissor.png" /></span>
</span>;
or from the keyboard using the shortcut <span><b class="keycap">i</b></span>.
</p>
</div>
<div class="simplesect" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="id3321577"></a>Key modifiers (Defaults)</h4>
</div>
</div>
</div>
<p>
The Fuzzy Select tool does not have any special key modifiers,
only the ones that affect all selection tools in the same way.
See <a href="ch03s02.html#gimp-tool-select" title="2.1. Common Features">Selection Tools</a> for
help with these.
</p>
</div>
<div class="simplesect" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="id3321785"></a>Options</h4>
</div>
</div>
</div>
<div class="informalfigure">
<div class="mediaobject">
<img src="../images/toolbox/tool-options-scissor.png" />
<div class="caption">
<p>
Tool Options for the Intelligent Scissors
</p>
</div>
</div>
</div>
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<table border="0" summary="Note">
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<img alt="[Note]" src="../images/note.png" />
</td>
<th align="left">Note</th>
</tr>
<tr>
<td colspan="2" align="left" valign="top">
<p>
See <a href="ch03s02.html#gimp-tool-select" title="2.1. Common Features">Selection Tools</a> for
help with options that are common to all these tools. Only
options that are specific to the Intelligent Scissors
tool are explained here.
</p>
</td>
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</table>
</div>
<div class="variablelist">
<dl>
<dt>
<span class="term">Show Interactive Boundary</span>
</dt>
<dd>
<p>
If this option is enabled, dragging a control node during
placement will indicate the path that will be taken by the
selection boundary. If it is not enabled, the node will be
shown connected to the previous node by a straight line
while you are dragging it around, and you won't see the
resulting path until you release the pointer button. On
slow systems, if your control nodes are far apart, this may
give a bit of a speed-up.
</p>
</dd>
</dl>
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