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  • Committer: Bazaar Package Importer
  • Author(s): Ari Pollak
  • Date: 2009-08-14 09:57:17 UTC
  • mto: (1.1.21 upstream) (0.1.5 squeeze)
  • mto: This revision was merged to the branch mainline in revision 48.
  • Revision ID: james.westby@ubuntu.com-20090814095717-37dh2xqy5t0rurpk
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<th width="100%" align="center">GIMP Math Library Reference Manual</th>
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<td><a accesskey="n" href="libgimpmath-GimpVector.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
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<tr><td colspan="5" class="shortcuts"><nobr><a href="#libgimpmath-GimpMatrix.synopsis" class="shortcut">Top</a>
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                   | 
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                  <a href="#libgimpmath-GimpMatrix.description" class="shortcut">Description</a></nobr></td></tr>
 
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<tr><td colspan="5" class="shortcuts">
 
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<a href="#libgimpmath-GimpMatrix.synopsis" class="shortcut">Top</a>
 
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                 | 
 
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                <a href="#libgimpmath-GimpMatrix.description" class="shortcut">Description</a>
 
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</td></tr>
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</table>
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<div class="refentry" lang="en">
 
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<div class="refentry" title="GimpMatrix">
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<a name="libgimpmath-GimpMatrix"></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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</td>
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<td valign="top" align="right"></td>
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</tr></table></div>
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<div class="refsynopsisdiv">
 
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<div class="refsynopsisdiv" title="Synopsis">
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<a name="libgimpmath-GimpMatrix.synopsis"></a><h2>Synopsis</h2>
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<pre class="synopsis">
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                    <a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix2" title="GimpMatrix2">GimpMatrix2</a>;
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                                                         <a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"
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>gdouble</a> *c);
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#define             <a class="link" href="libgimpmath-GimpMatrix.html#GIMP-TYPE-MATRIX2:CAPS" title="GIMP_TYPE_MATRIX2">GIMP_TYPE_MATRIX2</a>
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#define             <a class="link" href="libgimpmath-GimpMatrix.html#GIMP-TYPE-PARAM-MATRIX2:CAPS" title="GIMP_TYPE_PARAM_MATRIX2">GIMP_TYPE_PARAM_MATRIX2</a>
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#define             <a class="link" href="libgimpmath-GimpMatrix.html#GIMP-IS-PARAM-SPEC-MATRIX2:CAPS" title="GIMP_IS_PARAM_SPEC_MATRIX2()">GIMP_IS_PARAM_SPEC_MATRIX2</a>          (pspec)
 
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#define             <a class="link" href="libgimpmath-GimpMatrix.html#GIMP-TYPE-MATRIX2--CAPS" title="GIMP_TYPE_MATRIX2">GIMP_TYPE_MATRIX2</a>
 
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#define             <a class="link" href="libgimpmath-GimpMatrix.html#GIMP-TYPE-PARAM-MATRIX2--CAPS" title="GIMP_TYPE_PARAM_MATRIX2">GIMP_TYPE_PARAM_MATRIX2</a>
 
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#define             <a class="link" href="libgimpmath-GimpMatrix.html#GIMP-IS-PARAM-SPEC-MATRIX2--CAPS" title="GIMP_IS_PARAM_SPEC_MATRIX2()">GIMP_IS_PARAM_SPEC_MATRIX2</a>          (pspec)
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<a
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href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"
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>GParamSpec</a>*         <a class="link" href="libgimpmath-GimpMatrix.html#gimp-param-spec-matrix2" title="gimp_param_spec_matrix2 ()">gimp_param_spec_matrix2</a>             (const <a
 
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>GParamSpec</a> *        <a class="link" href="libgimpmath-GimpMatrix.html#gimp-param-spec-matrix2" title="gimp_param_spec_matrix2 ()">gimp_param_spec_matrix2</a>             (const <a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a> *name,
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                                                         const <a
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                                                         <a
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href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamFlags"
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>GParamFlags</a> flags);
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#define             <a class="link" href="libgimpmath-GimpMatrix.html#GIMP-VALUE-HOLDS-MATRIX2:CAPS" title="GIMP_VALUE_HOLDS_MATRIX2()">GIMP_VALUE_HOLDS_MATRIX2</a>            (value)
 
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#define             <a class="link" href="libgimpmath-GimpMatrix.html#GIMP-VALUE-HOLDS-MATRIX2--CAPS" title="GIMP_VALUE_HOLDS_MATRIX2()">GIMP_VALUE_HOLDS_MATRIX2</a>            (value)
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</pre>
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</div>
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<div class="refsect1" lang="en">
 
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<div class="refsect1" title="Description">
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<a name="libgimpmath-GimpMatrix.description"></a><h2>Description</h2>
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<p>
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When doing image manipulation you will often need 3x3 transformation
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matrices that define translation, rotation, scaling, shearing and 
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arbitrary perspective transformations using a 3x3 matrix. Here you'll 
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find a set of utility functions to set up those matrices and to perform 
 
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matrices that define translation, rotation, scaling, shearing and
 
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arbitrary perspective transformations using a 3x3 matrix. Here you'll
 
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find a set of utility functions to set up those matrices and to perform
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basic matrix manipulations and tests.
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</p>
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<p>
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element for row r and column c of the matrix is coeff[r][c].
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</p>
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</div>
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<div class="refsect1" lang="en">
 
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<div class="refsect1" title="Details">
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<a name="libgimpmath-GimpMatrix.details"></a><h2>Details</h2>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="GimpMatrix2">
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<a name="GimpMatrix2"></a><h3>GimpMatrix2</h3>
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<pre class="programlisting">typedef struct {
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  gdouble coeff[2][2];
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</p>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="GimpMatrix3">
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<a name="GimpMatrix3"></a><h3>GimpMatrix3</h3>
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<pre class="programlisting">typedef struct {
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  gdouble coeff[3][3];
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</p>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="GimpMatrix4">
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<a name="GimpMatrix4"></a><h3>GimpMatrix4</h3>
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<pre class="programlisting">typedef struct {
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  gdouble coeff[4][4];
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</p>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix2_identity ()">
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<a name="gimp-matrix2-identity"></a><h3>gimp_matrix2_identity ()</h3>
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<pre class="programlisting">void                gimp_matrix2_identity               (<a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix2" title="GimpMatrix2">GimpMatrix2</a> *matrix);</pre>
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<p>
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Sets the matrix to the identity matrix.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix2_mult ()">
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<a name="gimp-matrix2-mult"></a><h3>gimp_matrix2_mult ()</h3>
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<pre class="programlisting">void                gimp_matrix2_mult                   (const <a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix2" title="GimpMatrix2">GimpMatrix2</a> *matrix1,
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                                                         <a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix2" title="GimpMatrix2">GimpMatrix2</a> *matrix2);</pre>
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<p>
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Multiplies two matrices and puts the result into the second one.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_identity ()">
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<a name="gimp-matrix3-identity"></a><h3>gimp_matrix3_identity ()</h3>
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<pre class="programlisting">void                gimp_matrix3_identity               (<a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix3" title="GimpMatrix3">GimpMatrix3</a> *matrix);</pre>
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<p>
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Sets the matrix to the identity matrix.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_mult ()">
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<a name="gimp-matrix3-mult"></a><h3>gimp_matrix3_mult ()</h3>
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<pre class="programlisting">void                gimp_matrix3_mult                   (const <a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix3" title="GimpMatrix3">GimpMatrix3</a> *matrix1,
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                                                         <a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix3" title="GimpMatrix3">GimpMatrix3</a> *matrix2);</pre>
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<p>
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Multiplies two matrices and puts the result into the second one.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_translate ()">
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<a name="gimp-matrix3-translate"></a><h3>gimp_matrix3_translate ()</h3>
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<pre class="programlisting">void                gimp_matrix3_translate              (<a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix3" title="GimpMatrix3">GimpMatrix3</a> *matrix,
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                                                         <a
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<p>
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Translates the matrix by x and y.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_scale ()">
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<a name="gimp-matrix3-scale"></a><h3>gimp_matrix3_scale ()</h3>
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<pre class="programlisting">void                gimp_matrix3_scale                  (<a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix3" title="GimpMatrix3">GimpMatrix3</a> *matrix,
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                                                         <a
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<p>
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Scales the matrix by x and y</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_rotate ()">
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<a name="gimp-matrix3-rotate"></a><h3>gimp_matrix3_rotate ()</h3>
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<pre class="programlisting">void                gimp_matrix3_rotate                 (<a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix3" title="GimpMatrix3">GimpMatrix3</a> *matrix,
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                                                         <a
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<p>
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Rotates the matrix by theta degrees.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_xshear ()">
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<a name="gimp-matrix3-xshear"></a><h3>gimp_matrix3_xshear ()</h3>
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<pre class="programlisting">void                gimp_matrix3_xshear                 (<a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix3" title="GimpMatrix3">GimpMatrix3</a> *matrix,
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                                                         <a
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<p>
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Shears the matrix in the X direction.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_yshear ()">
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<a name="gimp-matrix3-yshear"></a><h3>gimp_matrix3_yshear ()</h3>
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<pre class="programlisting">void                gimp_matrix3_yshear                 (<a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix3" title="GimpMatrix3">GimpMatrix3</a> *matrix,
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                                                         <a
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<p>
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Shears the matrix in the Y direction.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_affine ()">
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<a name="gimp-matrix3-affine"></a><h3>gimp_matrix3_affine ()</h3>
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<pre class="programlisting">void                gimp_matrix3_affine                 (<a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix3" title="GimpMatrix3">GimpMatrix3</a> *matrix,
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                                                         <a
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 ( b d f )
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 ( 0 0 1 )</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_transform_point ()">
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<a name="gimp-matrix3-transform-point"></a><h3>gimp_matrix3_transform_point ()</h3>
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<pre class="programlisting">void                gimp_matrix3_transform_point        (const <a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix3" title="GimpMatrix3">GimpMatrix3</a> *matrix,
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                                                         <a
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<p>
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Transforms a point in 2D as specified by the transformation matrix.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_determinant ()">
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<a name="gimp-matrix3-determinant"></a><h3>gimp_matrix3_determinant ()</h3>
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<pre class="programlisting"><a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"
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<p>
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Calculates the determinant of the given matrix.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_invert ()">
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<a name="gimp-matrix3-invert"></a><h3>gimp_matrix3_invert ()</h3>
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<pre class="programlisting">void                gimp_matrix3_invert                 (<a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix3" title="GimpMatrix3">GimpMatrix3</a> *matrix);</pre>
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<p>
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Inverts the given matrix.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_matrix3_is_identity ()">
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<a name="gimp-matrix3-is-identity"></a><h3>gimp_matrix3_is_identity ()</h3>
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<pre class="programlisting"><a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
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<p>
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Checks if the given matrix is the identity matrix.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td> <a
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href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"
 
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href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE--CAPS"
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><code class="literal">TRUE</code></a> if the matrix is the identity matrix, <a
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href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"
 
635
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE--CAPS"
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><code class="literal">FALSE</code></a> otherwise
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</td>
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</tr>
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</table></div>
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</div>
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<hr>
655
 
<div class="refsect2" lang="en">
 
643
<div class="refsect2" title="gimp_matrix3_is_diagonal ()">
656
644
<a name="gimp-matrix3-is-diagonal"></a><h3>gimp_matrix3_is_diagonal ()</h3>
657
645
<pre class="programlisting"><a
658
646
href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
660
648
<p>
661
649
Checks if the given matrix is diagonal.</p>
662
650
<p>
663
 
 
664
651
</p>
665
652
<div class="variablelist"><table border="0">
666
653
<col align="left" valign="top">
673
660
<tr>
674
661
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
675
662
<td> <a
676
 
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"
 
663
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE--CAPS"
677
664
><code class="literal">TRUE</code></a> if the matrix is diagonal, <a
678
 
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"
 
665
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE--CAPS"
679
666
><code class="literal">FALSE</code></a> otherwise
680
667
</td>
681
668
</tr>
683
670
</table></div>
684
671
</div>
685
672
<hr>
686
 
<div class="refsect2" lang="en">
 
673
<div class="refsect2" title="gimp_matrix3_is_affine ()">
687
674
<a name="gimp-matrix3-is-affine"></a><h3>gimp_matrix3_is_affine ()</h3>
688
675
<pre class="programlisting"><a
689
676
href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
691
678
<p>
692
679
Checks if the given matrix defines an affine transformation.</p>
693
680
<p>
694
 
 
695
681
</p>
696
682
<div class="variablelist"><table border="0">
697
683
<col align="left" valign="top">
704
690
<tr>
705
691
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
706
692
<td> <a
707
 
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"
 
693
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE--CAPS"
708
694
><code class="literal">TRUE</code></a> if the matrix defines an affine transformation,
709
695
         <a
710
 
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"
 
696
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE--CAPS"
711
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><code class="literal">FALSE</code></a> otherwise
712
698
 
713
699
</td>
714
700
</tr>
715
701
</tbody>
716
702
</table></div>
717
 
<p class="since">Since  GIMP 2.4
718
 
</p>
 
703
<p class="since">Since GIMP 2.4</p>
719
704
</div>
720
705
<hr>
721
 
<div class="refsect2" lang="en">
 
706
<div class="refsect2" title="gimp_matrix3_is_simple ()">
722
707
<a name="gimp-matrix3-is-simple"></a><h3>gimp_matrix3_is_simple ()</h3>
723
708
<pre class="programlisting"><a
724
709
href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
727
712
Checks if we'll need to interpolate when applying this matrix as
728
713
a transformation.</p>
729
714
<p>
730
 
 
731
715
</p>
732
716
<div class="variablelist"><table border="0">
733
717
<col align="left" valign="top">
740
724
<tr>
741
725
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
742
726
<td> <a
743
 
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"
 
727
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE--CAPS"
744
728
><code class="literal">TRUE</code></a> if all entries of the upper left 2x2 matrix are
745
729
         either 0 or 1, <a
746
 
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"
 
730
href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE--CAPS"
747
731
><code class="literal">FALSE</code></a> otherwise
748
732
</td>
749
733
</tr>
751
735
</table></div>
752
736
</div>
753
737
<hr>
754
 
<div class="refsect2" lang="en">
 
738
<div class="refsect2" title="gimp_matrix4_to_deg ()">
755
739
<a name="gimp-matrix4-to-deg"></a><h3>gimp_matrix4_to_deg ()</h3>
756
740
<pre class="programlisting">void                gimp_matrix4_to_deg                 (const <a class="link" href="libgimpmath-GimpMatrix.html#GimpMatrix4" title="GimpMatrix4">GimpMatrix4</a> *matrix,
757
741
                                                         <a
766
750
<p>
767
751
</p>
768
752
<p>
769
 
 
770
753
</p>
771
754
<div class="variablelist"><table border="0">
772
755
<col align="left" valign="top">
795
778
</table></div>
796
779
</div>
797
780
<hr>
798
 
<div class="refsect2" lang="en">
799
 
<a name="GIMP-TYPE-MATRIX2:CAPS"></a><h3>GIMP_TYPE_MATRIX2</h3>
 
781
<div class="refsect2" title="GIMP_TYPE_MATRIX2">
 
782
<a name="GIMP-TYPE-MATRIX2--CAPS"></a><h3>GIMP_TYPE_MATRIX2</h3>
800
783
<pre class="programlisting">#define GIMP_TYPE_MATRIX2               (gimp_matrix2_get_type ())
801
784
</pre>
802
785
<p>
803
 
 
804
786
</p>
805
787
</div>
806
788
<hr>
807
 
<div class="refsect2" lang="en">
808
 
<a name="GIMP-TYPE-PARAM-MATRIX2:CAPS"></a><h3>GIMP_TYPE_PARAM_MATRIX2</h3>
 
789
<div class="refsect2" title="GIMP_TYPE_PARAM_MATRIX2">
 
790
<a name="GIMP-TYPE-PARAM-MATRIX2--CAPS"></a><h3>GIMP_TYPE_PARAM_MATRIX2</h3>
809
791
<pre class="programlisting">#define GIMP_TYPE_PARAM_MATRIX2            (gimp_param_matrix2_get_type ())
810
792
</pre>
811
793
<p>
812
 
 
813
794
</p>
814
795
</div>
815
796
<hr>
816
 
<div class="refsect2" lang="en">
817
 
<a name="GIMP-IS-PARAM-SPEC-MATRIX2:CAPS"></a><h3>GIMP_IS_PARAM_SPEC_MATRIX2()</h3>
 
797
<div class="refsect2" title="GIMP_IS_PARAM_SPEC_MATRIX2()">
 
798
<a name="GIMP-IS-PARAM-SPEC-MATRIX2--CAPS"></a><h3>GIMP_IS_PARAM_SPEC_MATRIX2()</h3>
818
799
<pre class="programlisting">#define GIMP_IS_PARAM_SPEC_MATRIX2(pspec)  (G_TYPE_CHECK_INSTANCE_TYPE ((pspec), GIMP_TYPE_PARAM_MATRIX2))
819
800
</pre>
820
801
<p>
821
 
 
822
802
</p>
823
803
<div class="variablelist"><table border="0">
824
804
<col align="left" valign="top">
825
805
<tbody><tr>
826
806
<td><p><span class="term"><em class="parameter"><code>pspec</code></em> :</span></p></td>
827
807
<td>
828
 
 
829
 
 
830
808
</td>
831
809
</tr></tbody>
832
810
</table></div>
833
811
</div>
834
812
<hr>
835
 
<div class="refsect2" lang="en">
 
813
<div class="refsect2" title="gimp_param_spec_matrix2 ()">
836
814
<a name="gimp-param-spec-matrix2"></a><h3>gimp_param_spec_matrix2 ()</h3>
837
815
<pre class="programlisting"><a
838
816
href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#GParamSpec"
839
 
>GParamSpec</a>*         gimp_param_spec_matrix2             (const <a
 
817
>GParamSpec</a> *        gimp_param_spec_matrix2             (const <a
840
818
href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
841
819
>gchar</a> *name,
842
820
                                                         const <a
855
833
href="http://library.gnome.org/devel/gobject/unstable/gobject-GParamSpec.html#g-param-spec-internal"
856
834
><code class="function">g_param_spec_internal()</code></a> for more information.</p>
857
835
<p>
858
 
 
859
836
</p>
860
837
<div class="variablelist"><table border="0">
861
838
<col align="left" valign="top">
897
874
</tr>
898
875
</tbody>
899
876
</table></div>
900
 
<p class="since">Since  GIMP 2.4
901
 
</p>
 
877
<p class="since">Since GIMP 2.4</p>
902
878
</div>
903
879
<hr>
904
 
<div class="refsect2" lang="en">
905
 
<a name="GIMP-VALUE-HOLDS-MATRIX2:CAPS"></a><h3>GIMP_VALUE_HOLDS_MATRIX2()</h3>
 
880
<div class="refsect2" title="GIMP_VALUE_HOLDS_MATRIX2()">
 
881
<a name="GIMP-VALUE-HOLDS-MATRIX2--CAPS"></a><h3>GIMP_VALUE_HOLDS_MATRIX2()</h3>
906
882
<pre class="programlisting">#define GIMP_VALUE_HOLDS_MATRIX2(value) (G_TYPE_CHECK_VALUE_TYPE ((value), GIMP_TYPE_MATRIX2))
907
883
</pre>
908
884
<p>
909
 
 
910
885
</p>
911
886
<div class="variablelist"><table border="0">
912
887
<col align="left" valign="top">
913
888
<tbody><tr>
914
889
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
915
890
<td>
916
 
 
917
 
 
918
891
</td>
919
892
</tr></tbody>
920
893
</table></div>
921
894
</div>
922
895
</div>
923
 
<div class="refsect1" lang="en">
 
896
<div class="refsect1" title="See Also">
924
897
<a name="libgimpmath-GimpMatrix.see-also"></a><h2>See Also</h2>
925
898
<p>
926
899
<a class="link" href="libgimpmath-GimpVector.html#GimpVector2" title="GimpVector2"><span class="type">GimpVector2</span></a>
935
908
</div>
936
909
<div class="footer">
937
910
<hr>
938
 
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911
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