785 lines
43 KiB
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785 lines
43 KiB
HTML
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<title>gimpitemtransform: GIMP Library Reference Manual</title>
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<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span>
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<a href="#libgimp-gimpitemtransform.description" class="shortcut">Description</a></span>
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<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
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<div class="refentry">
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<a name="libgimp-gimpitemtransform"></a><div class="titlepage"></div>
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<div class="refnamediv"><table width="100%"><tr>
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<td valign="top">
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<h2><span class="refentrytitle"><a name="libgimp-gimpitemtransform.top_of_page"></a>gimpitemtransform</span></h2>
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<p>gimpitemtransform — Functions to perform transformations on items.</p>
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</td>
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<td class="gallery_image" valign="top" align="right"></td>
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</tr></table></div>
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<div class="refsect1">
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<a name="libgimp-gimpitemtransform.functions"></a><h2>Functions</h2>
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<div class="informaltable"><table class="informaltable" width="100%" border="0">
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<colgroup>
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<col width="150px" class="functions_return">
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<col class="functions_name">
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</colgroup>
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<tbody>
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<tr>
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<td class="function_type">
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<a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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</td>
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<td class="function_name">
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<a class="link" href="libgimp-gimpitemtransform.html#gimp-item-transform-flip-simple" title="gimp_item_transform_flip_simple ()">gimp_item_transform_flip_simple</a> <span class="c_punctuation">()</span>
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</td>
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</tr>
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<tr>
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<td class="function_type">
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<a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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</td>
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<td class="function_name">
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<a class="link" href="libgimp-gimpitemtransform.html#gimp-item-transform-flip" title="gimp_item_transform_flip ()">gimp_item_transform_flip</a> <span class="c_punctuation">()</span>
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</td>
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</tr>
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<tr>
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<td class="function_type">
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<a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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</td>
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<td class="function_name">
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<a class="link" href="libgimp-gimpitemtransform.html#gimp-item-transform-perspective" title="gimp_item_transform_perspective ()">gimp_item_transform_perspective</a> <span class="c_punctuation">()</span>
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</td>
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</tr>
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<tr>
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<td class="function_type">
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<a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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</td>
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<td class="function_name">
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<a class="link" href="libgimp-gimpitemtransform.html#gimp-item-transform-rotate-simple" title="gimp_item_transform_rotate_simple ()">gimp_item_transform_rotate_simple</a> <span class="c_punctuation">()</span>
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</td>
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</tr>
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<tr>
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<td class="function_type">
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<a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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</td>
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<td class="function_name">
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<a class="link" href="libgimp-gimpitemtransform.html#gimp-item-transform-rotate" title="gimp_item_transform_rotate ()">gimp_item_transform_rotate</a> <span class="c_punctuation">()</span>
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</td>
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</tr>
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<tr>
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<td class="function_type">
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<a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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</td>
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<td class="function_name">
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<a class="link" href="libgimp-gimpitemtransform.html#gimp-item-transform-scale" title="gimp_item_transform_scale ()">gimp_item_transform_scale</a> <span class="c_punctuation">()</span>
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</td>
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</tr>
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<tr>
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<td class="function_type">
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<a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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</td>
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<td class="function_name">
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<a class="link" href="libgimp-gimpitemtransform.html#gimp-item-transform-shear" title="gimp_item_transform_shear ()">gimp_item_transform_shear</a> <span class="c_punctuation">()</span>
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</td>
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</tr>
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<tr>
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<td class="function_type">
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<a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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</td>
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<td class="function_name">
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<a class="link" href="libgimp-gimpitemtransform.html#gimp-item-transform-2d" title="gimp_item_transform_2d ()">gimp_item_transform_2d</a> <span class="c_punctuation">()</span>
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</td>
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</tr>
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<tr>
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<td class="function_type">
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<a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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</td>
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<td class="function_name">
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<a class="link" href="libgimp-gimpitemtransform.html#gimp-item-transform-matrix" title="gimp_item_transform_matrix ()">gimp_item_transform_matrix</a> <span class="c_punctuation">()</span>
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<div class="refsect1">
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<a name="libgimp-gimpitemtransform.description"></a><h2>Description</h2>
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<p>Functions to perform transformations on items.</p>
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</div>
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<div class="refsect1">
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<a name="libgimp-gimpitemtransform.functions_details"></a><h2>Functions</h2>
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<div class="refsect2">
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<a name="gimp-item-transform-flip-simple"></a><h3>gimp_item_transform_flip_simple ()</h3>
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<pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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gimp_item_transform_flip_simple (<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint32"><span class="type">gint32</span></a> item_ID</code></em>,
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<em class="parameter"><code><a href="../html/libgimpbase-gimpbaseenums.html#GimpOrientationType"><span class="type">GimpOrientationType</span></a> flip_type</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> auto_center</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> axis</code></em>);</pre>
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<p>Flip the specified item either vertically or horizontally.</p>
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<p>This procedure flips the specified item. If a selection exists and
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the item is a drawable, the portion of the drawable which lies under
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the selection is cut from the drawable and made into a floating
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selection which is then flipped. If auto_center is set to TRUE, the
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flip is around the selection's center. Otherwise, the coordinate of
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the axis needs to be specified. The return value is the ID of the
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flipped item. If there was no selection or the item is not a
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drawable, this will be equal to the item ID supplied as input.
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Otherwise, this will be the newly created and flipped drawable.
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This procedure is affected by the following context setters:
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<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-resize" title="gimp_context_set_transform_resize ()"><code class="function">gimp_context_set_transform_resize()</code></a>.</p>
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<div class="refsect3">
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<a name="gimp-item-transform-flip-simple.parameters"></a><h4>Parameters</h4>
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<div class="informaltable"><table class="informaltable" width="100%" border="0">
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<colgroup>
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<col width="150px" class="parameters_name">
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<col class="parameters_description">
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<col width="200px" class="parameters_annotations">
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</colgroup>
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<tbody>
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<tr>
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<td class="parameter_name"><p>item_ID</p></td>
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<td class="parameter_description"><p>The affected item.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>flip_type</p></td>
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<td class="parameter_description"><p>Type of flip.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>auto_center</p></td>
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<td class="parameter_description"><p>Whether to automatically position the axis in the selection center.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>axis</p></td>
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<td class="parameter_description"><p>coord. of flip axis.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<div class="refsect3">
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<a name="gimp-item-transform-flip-simple.returns"></a><h4>Returns</h4>
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<p> The flipped item.</p>
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</div>
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<p class="since">Since: <a class="link" href="api-index-2-2.html#api-index-2.2">2.2</a></p>
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</div>
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<hr>
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<div class="refsect2">
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<a name="gimp-item-transform-flip"></a><h3>gimp_item_transform_flip ()</h3>
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<pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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gimp_item_transform_flip (<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint32"><span class="type">gint32</span></a> item_ID</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> x0</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> y0</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> x1</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> y1</code></em>);</pre>
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<p>Flip the specified item around a given line.</p>
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<p>This procedure flips the specified item. If a selection exists and
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the item is a drawable , the portion of the drawable which lies
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under the selection is cut from the drawable and made into a
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floating selection which is then flipped. The axis to flip around is
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specified by specifying two points from that line. The return value
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is the ID of the flipped item. If there was no selection or the item
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is not a drawable, this will be equal to the item ID supplied as
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input. Otherwise, this will be the newly created and flipped
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drawable.
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This procedure is affected by the following context setters:
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<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-interpolation" title="gimp_context_set_interpolation ()"><code class="function">gimp_context_set_interpolation()</code></a>,
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<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-direction" title="gimp_context_set_transform_direction ()"><code class="function">gimp_context_set_transform_direction()</code></a>,
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<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-resize" title="gimp_context_set_transform_resize ()"><code class="function">gimp_context_set_transform_resize()</code></a>.</p>
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<div class="refsect3">
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<a name="gimp-item-transform-flip.parameters"></a><h4>Parameters</h4>
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<div class="informaltable"><table class="informaltable" width="100%" border="0">
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<colgroup>
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<col width="150px" class="parameters_name">
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<col class="parameters_description">
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<col width="200px" class="parameters_annotations">
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</colgroup>
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<tbody>
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<tr>
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<td class="parameter_name"><p>item_ID</p></td>
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<td class="parameter_description"><p>The affected item.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>x0</p></td>
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<td class="parameter_description"><p>horz. coord. of one end of axis.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>y0</p></td>
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<td class="parameter_description"><p>vert. coord. of one end of axis.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>x1</p></td>
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<td class="parameter_description"><p>horz. coord. of other end of axis.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>y1</p></td>
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<td class="parameter_description"><p>vert. coord. of other end of axis.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<div class="refsect3">
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<a name="gimp-item-transform-flip.returns"></a><h4>Returns</h4>
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<p> The flipped item.</p>
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</div>
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<p class="since">Since: <a class="link" href="api-index-2-8.html#api-index-2.8">2.8</a></p>
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</div>
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<hr>
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<div class="refsect2">
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<a name="gimp-item-transform-perspective"></a><h3>gimp_item_transform_perspective ()</h3>
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<pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
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gimp_item_transform_perspective (<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint32"><span class="type">gint32</span></a> item_ID</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> x0</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> y0</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> x1</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> y1</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> x2</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> y2</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> x3</code></em>,
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<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> y3</code></em>);</pre>
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<p>Perform a possibly non-affine transformation on the specified item.</p>
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<p>This procedure performs a possibly non-affine transformation on the
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specified item by allowing the corners of the original bounding box
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to be arbitrarily remapped to any values. The specified item is
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remapped if no selection exists or it is not a drawable. However, if
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a selection exists and the item is a drawable, the portion of the
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drawable which lies under the selection is cut from the drawable and
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made into a floating selection which is then remapped as specified.
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The return value is the ID of the remapped item. If there was no
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selection or the item is not a drawable, this will be equal to the
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item ID supplied as input. Otherwise, this will be the newly created
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and remapped drawable. The 4 coordinates specify the new locations
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of each corner of the original bounding box. By specifying these
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values, any affine transformation (rotation, scaling, translation)
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can be affected. Additionally, these values can be specified such
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that the resulting transformed item will appear to have been
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projected via a perspective transform.
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This procedure is affected by the following context setters:
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<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-interpolation" title="gimp_context_set_interpolation ()"><code class="function">gimp_context_set_interpolation()</code></a>,
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<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-direction" title="gimp_context_set_transform_direction ()"><code class="function">gimp_context_set_transform_direction()</code></a>,
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<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-resize" title="gimp_context_set_transform_resize ()"><code class="function">gimp_context_set_transform_resize()</code></a>.</p>
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<div class="refsect3">
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<a name="gimp-item-transform-perspective.parameters"></a><h4>Parameters</h4>
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<div class="informaltable"><table class="informaltable" width="100%" border="0">
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<colgroup>
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<col width="150px" class="parameters_name">
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<col class="parameters_description">
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<col width="200px" class="parameters_annotations">
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</colgroup>
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<tbody>
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<tr>
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<td class="parameter_name"><p>item_ID</p></td>
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<td class="parameter_description"><p>The affected item.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>x0</p></td>
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<td class="parameter_description"><p>The new x coordinate of upper-left corner of original bounding box.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>y0</p></td>
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<td class="parameter_description"><p>The new y coordinate of upper-left corner of original bounding box.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>x1</p></td>
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<td class="parameter_description"><p>The new x coordinate of upper-right corner of original bounding box.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>y1</p></td>
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<td class="parameter_description"><p>The new y coordinate of upper-right corner of original bounding box.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>x2</p></td>
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<td class="parameter_description"><p>The new x coordinate of lower-left corner of original bounding box.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
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<td class="parameter_name"><p>y2</p></td>
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<td class="parameter_description"><p>The new y coordinate of lower-left corner of original bounding box.</p></td>
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<td class="parameter_annotations"> </td>
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</tr>
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<tr>
|
||
<td class="parameter_name"><p>x3</p></td>
|
||
<td class="parameter_description"><p>The new x coordinate of lower-right corner of original bounding box.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>y3</p></td>
|
||
<td class="parameter_description"><p>The new y coordinate of lower-right corner of original bounding box.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
</div>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-perspective.returns"></a><h4>Returns</h4>
|
||
<p> The newly mapped item.</p>
|
||
</div>
|
||
<p class="since">Since: <a class="link" href="api-index-2-8.html#api-index-2.8">2.8</a></p>
|
||
</div>
|
||
<hr>
|
||
<div class="refsect2">
|
||
<a name="gimp-item-transform-rotate-simple"></a><h3>gimp_item_transform_rotate_simple ()</h3>
|
||
<pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
|
||
gimp_item_transform_rotate_simple (<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint32"><span class="type">gint32</span></a> item_ID</code></em>,
|
||
<em class="parameter"><code><a href="../html/libgimpbase-gimpbaseenums.html#GimpRotationType"><span class="type">GimpRotationType</span></a> rotate_type</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> auto_center</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> center_x</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> center_y</code></em>);</pre>
|
||
<p>Rotate the specified item about given coordinates through the
|
||
specified angle.</p>
|
||
<p>This function rotates the specified item. If a selection exists and
|
||
the item is a drawable, the portion of the drawable which lies under
|
||
the selection is cut from the drawable and made into a floating
|
||
selection which is then rotated by the specified amount. The return
|
||
value is the ID of the rotated item. If there was no selection or
|
||
the item is not a drawable, this will be equal to the item ID
|
||
supplied as input. Otherwise, this will be the newly created and
|
||
rotated drawable.
|
||
This procedure is affected by the following context setters:
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-resize" title="gimp_context_set_transform_resize ()"><code class="function">gimp_context_set_transform_resize()</code></a>.</p>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-rotate-simple.parameters"></a><h4>Parameters</h4>
|
||
<div class="informaltable"><table class="informaltable" width="100%" border="0">
|
||
<colgroup>
|
||
<col width="150px" class="parameters_name">
|
||
<col class="parameters_description">
|
||
<col width="200px" class="parameters_annotations">
|
||
</colgroup>
|
||
<tbody>
|
||
<tr>
|
||
<td class="parameter_name"><p>item_ID</p></td>
|
||
<td class="parameter_description"><p>The affected item.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>rotate_type</p></td>
|
||
<td class="parameter_description"><p>Type of rotation.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>auto_center</p></td>
|
||
<td class="parameter_description"><p>Whether to automatically rotate around the selection center.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>center_x</p></td>
|
||
<td class="parameter_description"><p>The hor. coordinate of the center of rotation.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>center_y</p></td>
|
||
<td class="parameter_description"><p>The vert. coordinate of the center of rotation.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
</div>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-rotate-simple.returns"></a><h4>Returns</h4>
|
||
<p> The rotated item.</p>
|
||
</div>
|
||
<p class="since">Since: <a class="link" href="api-index-2-8.html#api-index-2.8">2.8</a></p>
|
||
</div>
|
||
<hr>
|
||
<div class="refsect2">
|
||
<a name="gimp-item-transform-rotate"></a><h3>gimp_item_transform_rotate ()</h3>
|
||
<pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
|
||
gimp_item_transform_rotate (<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint32"><span class="type">gint32</span></a> item_ID</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> angle</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> auto_center</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> center_x</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> center_y</code></em>);</pre>
|
||
<p>Rotate the specified item about given coordinates through the
|
||
specified angle.</p>
|
||
<p>This function rotates the specified item. If a selection exists and
|
||
the item is a drawable, the portion of the drawable which lies under
|
||
the selection is cut from the drawable and made into a floating
|
||
selection which is then rotated by the specified amount. The return
|
||
value is the ID of the rotated item. If there was no selection or
|
||
the item is not a drawable, this will be equal to the item ID
|
||
supplied as input. Otherwise, this will be the newly created and
|
||
rotated drawable.
|
||
This procedure is affected by the following context setters:
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-interpolation" title="gimp_context_set_interpolation ()"><code class="function">gimp_context_set_interpolation()</code></a>,
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-direction" title="gimp_context_set_transform_direction ()"><code class="function">gimp_context_set_transform_direction()</code></a>,
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-resize" title="gimp_context_set_transform_resize ()"><code class="function">gimp_context_set_transform_resize()</code></a>.</p>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-rotate.parameters"></a><h4>Parameters</h4>
|
||
<div class="informaltable"><table class="informaltable" width="100%" border="0">
|
||
<colgroup>
|
||
<col width="150px" class="parameters_name">
|
||
<col class="parameters_description">
|
||
<col width="200px" class="parameters_annotations">
|
||
</colgroup>
|
||
<tbody>
|
||
<tr>
|
||
<td class="parameter_name"><p>item_ID</p></td>
|
||
<td class="parameter_description"><p>The affected item.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>angle</p></td>
|
||
<td class="parameter_description"><p>The angle of rotation (radians).</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>auto_center</p></td>
|
||
<td class="parameter_description"><p>Whether to automatically rotate around the selection center.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>center_x</p></td>
|
||
<td class="parameter_description"><p>The hor. coordinate of the center of rotation.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>center_y</p></td>
|
||
<td class="parameter_description"><p>The vert. coordinate of the center of rotation.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
</div>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-rotate.returns"></a><h4>Returns</h4>
|
||
<p> The rotated item.</p>
|
||
</div>
|
||
<p class="since">Since: <a class="link" href="api-index-2-8.html#api-index-2.8">2.8</a></p>
|
||
</div>
|
||
<hr>
|
||
<div class="refsect2">
|
||
<a name="gimp-item-transform-scale"></a><h3>gimp_item_transform_scale ()</h3>
|
||
<pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
|
||
gimp_item_transform_scale (<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint32"><span class="type">gint32</span></a> item_ID</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> x0</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> y0</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> x1</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> y1</code></em>);</pre>
|
||
<p>Scale the specified item.</p>
|
||
<p>This procedure scales the specified item. If a selection exists and
|
||
the item is a drawable, the portion of the drawable which lies under
|
||
the selection is cut from the drawable and made into a floating
|
||
selection which is then scaled by the specified amount. The return
|
||
value is the ID of the scaled item. If there was no selection or the
|
||
item is not a drawable, this will be equal to the item ID supplied
|
||
as input. Otherwise, this will be the newly created and scaled
|
||
drawable.
|
||
This procedure is affected by the following context setters:
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-interpolation" title="gimp_context_set_interpolation ()"><code class="function">gimp_context_set_interpolation()</code></a>,
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-direction" title="gimp_context_set_transform_direction ()"><code class="function">gimp_context_set_transform_direction()</code></a>,
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-resize" title="gimp_context_set_transform_resize ()"><code class="function">gimp_context_set_transform_resize()</code></a>.</p>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-scale.parameters"></a><h4>Parameters</h4>
|
||
<div class="informaltable"><table class="informaltable" width="100%" border="0">
|
||
<colgroup>
|
||
<col width="150px" class="parameters_name">
|
||
<col class="parameters_description">
|
||
<col width="200px" class="parameters_annotations">
|
||
</colgroup>
|
||
<tbody>
|
||
<tr>
|
||
<td class="parameter_name"><p>item_ID</p></td>
|
||
<td class="parameter_description"><p>The affected item.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>x0</p></td>
|
||
<td class="parameter_description"><p>The new x coordinate of the upper-left corner of the scaled region.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>y0</p></td>
|
||
<td class="parameter_description"><p>The new y coordinate of the upper-left corner of the scaled region.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>x1</p></td>
|
||
<td class="parameter_description"><p>The new x coordinate of the lower-right corner of the scaled region.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>y1</p></td>
|
||
<td class="parameter_description"><p>The new y coordinate of the lower-right corner of the scaled region.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
</div>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-scale.returns"></a><h4>Returns</h4>
|
||
<p> The scaled item.</p>
|
||
</div>
|
||
<p class="since">Since: <a class="link" href="api-index-2-8.html#api-index-2.8">2.8</a></p>
|
||
</div>
|
||
<hr>
|
||
<div class="refsect2">
|
||
<a name="gimp-item-transform-shear"></a><h3>gimp_item_transform_shear ()</h3>
|
||
<pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
|
||
gimp_item_transform_shear (<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint32"><span class="type">gint32</span></a> item_ID</code></em>,
|
||
<em class="parameter"><code><a href="../html/libgimpbase-gimpbaseenums.html#GimpOrientationType"><span class="type">GimpOrientationType</span></a> shear_type</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> magnitude</code></em>);</pre>
|
||
<p>Shear the specified item about its center by the specified
|
||
magnitude.</p>
|
||
<p>This procedure shears the specified item. If a selection exists and
|
||
the item is a drawable, the portion of the drawable which lies under
|
||
the selection is cut from the drawable and made into a floating
|
||
selection which is then sheard by the specified amount. The return
|
||
value is the ID of the sheard item. If there was no selection or the
|
||
item is not a drawable, this will be equal to the item ID supplied
|
||
as input. Otherwise, this will be the newly created and sheard
|
||
drawable. The shear type parameter indicates whether the shear will
|
||
be applied horizontally or vertically. The magnitude can be either
|
||
positive or negative and indicates the extent (in pixels) to shear
|
||
by.
|
||
This procedure is affected by the following context setters:
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-interpolation" title="gimp_context_set_interpolation ()"><code class="function">gimp_context_set_interpolation()</code></a>,
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-direction" title="gimp_context_set_transform_direction ()"><code class="function">gimp_context_set_transform_direction()</code></a>,
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-resize" title="gimp_context_set_transform_resize ()"><code class="function">gimp_context_set_transform_resize()</code></a>.</p>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-shear.parameters"></a><h4>Parameters</h4>
|
||
<div class="informaltable"><table class="informaltable" width="100%" border="0">
|
||
<colgroup>
|
||
<col width="150px" class="parameters_name">
|
||
<col class="parameters_description">
|
||
<col width="200px" class="parameters_annotations">
|
||
</colgroup>
|
||
<tbody>
|
||
<tr>
|
||
<td class="parameter_name"><p>item_ID</p></td>
|
||
<td class="parameter_description"><p>The affected item.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>shear_type</p></td>
|
||
<td class="parameter_description"><p>Type of shear.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>magnitude</p></td>
|
||
<td class="parameter_description"><p>The magnitude of the shear.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
</div>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-shear.returns"></a><h4>Returns</h4>
|
||
<p> The sheared item.</p>
|
||
</div>
|
||
<p class="since">Since: <a class="link" href="api-index-2-8.html#api-index-2.8">2.8</a></p>
|
||
</div>
|
||
<hr>
|
||
<div class="refsect2">
|
||
<a name="gimp-item-transform-2d"></a><h3>gimp_item_transform_2d ()</h3>
|
||
<pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
|
||
gimp_item_transform_2d (<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint32"><span class="type">gint32</span></a> item_ID</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> source_x</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> source_y</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> scale_x</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> scale_y</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> angle</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> dest_x</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> dest_y</code></em>);</pre>
|
||
<p>Transform the specified item in 2d.</p>
|
||
<p>This procedure transforms the specified item. If a selection exists
|
||
and the item is a drawable, the portion of the drawable which lies
|
||
under the selection is cut from the drawable and made into a
|
||
floating selection which is then transformed. The transformation is
|
||
done by scaling the image by the x and y scale factors about the
|
||
point (source_x, source_y), then rotating around the same point,
|
||
then translating that point to the new position (dest_x, dest_y).
|
||
The return value is the ID of the rotated drawable. If there was no
|
||
selection or the item is not a drawable, this will be equal to the
|
||
item ID supplied as input. Otherwise, this will be the newly created
|
||
and transformed drawable.
|
||
This procedure is affected by the following context setters:
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-interpolation" title="gimp_context_set_interpolation ()"><code class="function">gimp_context_set_interpolation()</code></a>,
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-direction" title="gimp_context_set_transform_direction ()"><code class="function">gimp_context_set_transform_direction()</code></a>,
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-resize" title="gimp_context_set_transform_resize ()"><code class="function">gimp_context_set_transform_resize()</code></a>.</p>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-2d.parameters"></a><h4>Parameters</h4>
|
||
<div class="informaltable"><table class="informaltable" width="100%" border="0">
|
||
<colgroup>
|
||
<col width="150px" class="parameters_name">
|
||
<col class="parameters_description">
|
||
<col width="200px" class="parameters_annotations">
|
||
</colgroup>
|
||
<tbody>
|
||
<tr>
|
||
<td class="parameter_name"><p>item_ID</p></td>
|
||
<td class="parameter_description"><p>The affected item.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>source_x</p></td>
|
||
<td class="parameter_description"><p>X coordinate of the transformation center.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>source_y</p></td>
|
||
<td class="parameter_description"><p>Y coordinate of the transformation center.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>scale_x</p></td>
|
||
<td class="parameter_description"><p>Amount to scale in x direction.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>scale_y</p></td>
|
||
<td class="parameter_description"><p>Amount to scale in y direction.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>angle</p></td>
|
||
<td class="parameter_description"><p>The angle of rotation (radians).</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>dest_x</p></td>
|
||
<td class="parameter_description"><p>X coordinate of where the center goes.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>dest_y</p></td>
|
||
<td class="parameter_description"><p>Y coordinate of where the center goes.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
</div>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-2d.returns"></a><h4>Returns</h4>
|
||
<p> The transformed item.</p>
|
||
</div>
|
||
<p class="since">Since: <a class="link" href="api-index-2-8.html#api-index-2.8">2.8</a></p>
|
||
</div>
|
||
<hr>
|
||
<div class="refsect2">
|
||
<a name="gimp-item-transform-matrix"></a><h3>gimp_item_transform_matrix ()</h3>
|
||
<pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gint32"><span class="returnvalue">gint32</span></a>
|
||
gimp_item_transform_matrix (<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint32"><span class="type">gint32</span></a> item_ID</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> coeff_0_0</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> coeff_0_1</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> coeff_0_2</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> coeff_1_0</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> coeff_1_1</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> coeff_1_2</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> coeff_2_0</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> coeff_2_1</code></em>,
|
||
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> coeff_2_2</code></em>);</pre>
|
||
<p>Transform the specified item in 2d.</p>
|
||
<p>This procedure transforms the specified item. If a selection exists
|
||
and the item is a drawable, the portion of the drawable which lies
|
||
under the selection is cut from the drawable and made into a
|
||
floating selection which is then transformed. The transformation is
|
||
done by assembling a 3x3 matrix from the coefficients passed. The
|
||
return value is the ID of the transformed item. If there was no
|
||
selection or the item is not a drawable, this will be equal to the
|
||
item ID supplied as input. Otherwise, this will be the newly created
|
||
and transformed drawable.
|
||
This procedure is affected by the following context setters:
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-interpolation" title="gimp_context_set_interpolation ()"><code class="function">gimp_context_set_interpolation()</code></a>,
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-direction" title="gimp_context_set_transform_direction ()"><code class="function">gimp_context_set_transform_direction()</code></a>,
|
||
<a class="link" href="libgimp-gimpcontext.html#gimp-context-set-transform-resize" title="gimp_context_set_transform_resize ()"><code class="function">gimp_context_set_transform_resize()</code></a>.</p>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-matrix.parameters"></a><h4>Parameters</h4>
|
||
<div class="informaltable"><table class="informaltable" width="100%" border="0">
|
||
<colgroup>
|
||
<col width="150px" class="parameters_name">
|
||
<col class="parameters_description">
|
||
<col width="200px" class="parameters_annotations">
|
||
</colgroup>
|
||
<tbody>
|
||
<tr>
|
||
<td class="parameter_name"><p>item_ID</p></td>
|
||
<td class="parameter_description"><p>The affected item.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>coeff_0_0</p></td>
|
||
<td class="parameter_description"><p>coefficient (0,0) of the transformation matrix.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>coeff_0_1</p></td>
|
||
<td class="parameter_description"><p>coefficient (0,1) of the transformation matrix.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>coeff_0_2</p></td>
|
||
<td class="parameter_description"><p>coefficient (0,2) of the transformation matrix.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>coeff_1_0</p></td>
|
||
<td class="parameter_description"><p>coefficient (1,0) of the transformation matrix.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>coeff_1_1</p></td>
|
||
<td class="parameter_description"><p>coefficient (1,1) of the transformation matrix.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>coeff_1_2</p></td>
|
||
<td class="parameter_description"><p>coefficient (1,2) of the transformation matrix.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>coeff_2_0</p></td>
|
||
<td class="parameter_description"><p>coefficient (2,0) of the transformation matrix.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>coeff_2_1</p></td>
|
||
<td class="parameter_description"><p>coefficient (2,1) of the transformation matrix.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="parameter_name"><p>coeff_2_2</p></td>
|
||
<td class="parameter_description"><p>coefficient (2,2) of the transformation matrix.</p></td>
|
||
<td class="parameter_annotations"> </td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
</div>
|
||
<div class="refsect3">
|
||
<a name="gimp-item-transform-matrix.returns"></a><h4>Returns</h4>
|
||
<p> The transformed item.</p>
|
||
</div>
|
||
<p class="since">Since: <a class="link" href="api-index-2-8.html#api-index-2.8">2.8</a></p>
|
||
</div>
|
||
</div>
|
||
<div class="refsect1">
|
||
<a name="libgimp-gimpitemtransform.other_details"></a><h2>Types and Values</h2>
|
||
</div>
|
||
</div>
|
||
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|
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