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<h1>vtkParametricRandomHills Class Reference</h1><!-- doxytag: class="vtkParametricRandomHills" --><!-- doxytag: inherits="vtkParametricFunction" --><code>#include <<a class="el" href="a03896.html">vtkParametricRandomHills.h</a>></code>
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Inheritance diagram for vtkParametricRandomHills:</div>
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Collaboration diagram for vtkParametricRandomHills:</div>
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<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
<p>
<a href="a12779.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
Generate a surface covered with randomly placed hills.
<p>
<a class="el" href="a01171.html" title="Generate a surface covered with randomly placed hills.">vtkParametricRandomHills</a> generates a surface covered with randomly placed hills.<p>
For further information about this surface, please consult the technical description "Parametric surfaces" in <a href="http://www.vtk.org/documents.php">http://www.vtk.org/documents.php</a> in the "VTK Technical Documents" section in the VTk.org web pages.<p>
<dl class="user" compact><dt><b>Thanks:</b></dt><dd>Andrew Maclean <a href="mailto:a.maclean@cas.edu.au">a.maclean@cas.edu.au</a> for creating and contributing the class.</dd></dl>
<dl class="user" compact><dt><b>Tests:</b></dt><dd><a class="el" href="c2_vtk_t_12.html#c2_vtk_t_vtkParametricRandomHills">vtkParametricRandomHills (Tests)</a> </dd></dl>
<p>Definition at line <a class="el" href="a03896.html#l00040">40</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<tr><td colspan="2"><br><h2>Public Types</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef <a class="el" href="a01167.html">vtkParametricFunction</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#292fce3779b48a07be06318ab6b00400">Superclass</a></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#b0be15b76d80a1251bf5a7f7f8a9d83e">GetClassName</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#695bebd7755f727e0eb2f12193484fbf">IsA</a> (const char *type)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#2f4c49561182db250e81b756b832047b">PrintSelf</a> (ostream &os, <a class="el" href="a00869.html">vtkIndent</a> indent)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#40ba2c6d9d0f4bcbb60bdaf50dd2a1e2">GetDimension</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#b642302915974f7723b0d078523e4cde">GenerateTheHills</a> (void)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#e3e68b55709cf910869e48edb5b02f19">Evaluate</a> (double uvw[3], double Pt[3], double Duvw[9])</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#b55e2473865a3761764c4e5536edaf50">EvaluateScalar</a> (double uvw[3], double Pt[3], double Duvw[9])</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#0e3e1d0ce558547c0485bb0b5dfa2eb5">SetNumberOfHills</a> (int)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#698fb41d035ce4110bcafce98efb12de">GetNumberOfHills</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#bbb32b0077f7af36eaab1779e1805390">SetHillXVariance</a> (double)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#aefdb0132e19b0dacaeffe87a3a6b398">GetHillXVariance</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#b9db9da469f6532e121c888be2bd8a3b">SetHillYVariance</a> (double)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#edb3d840cbc4e4e964752e5a2119358b">GetHillYVariance</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#ca97c493dd48e30b07bff5afdaa1a3ee">SetHillAmplitude</a> (double)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#106fe29eaffcb12d699af76b9a1a183b">GetHillAmplitude</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#b7fb59bd467f666f521f6b66feb2a530">SetRandomSeed</a> (int)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#5d136dde4d91c34f9a57cbbc75922822">GetRandomSeed</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#d932721ea228eace4dc059539992aeff">SetAllowRandomGeneration</a> (int)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#c02aea9460f80ccdafd0b8bd51075ae9">GetAllowRandomGeneration</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#1940057280556fb7955dc8e61153376a">AllowRandomGenerationOn</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#15ada69f661af9991020c8f1b2a57599">AllowRandomGenerationOff</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#aa26d9bce582fe0f18fc1d974ea0e460">SetXVarianceScaleFactor</a> (double)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#dc9f05672d93ac2f55dfb5ecad7d0b33">GetXVarianceScaleFactor</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#06b26610cfad941e0533f7e14cf6607d">SetYVarianceScaleFactor</a> (double)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#dc1449fb13c774b72eb76d619678f299">GetYVarianceScaleFactor</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#7bb77c7cec738f5c73f5364168092339">SetAmplitudeScaleFactor</a> (double)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#8112b58873f4f44f8f7140f0ba6c1fcb">GetAmplitudeScaleFactor</a> ()</td></tr>
<tr><td colspan="2"><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#ec3b24a1bf07c2e4e284eeeae29f4c8e">IsTypeOf</a> (const char *type)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static <a class="el" href="a01171.html">vtkParametricRandomHills</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#0efeac69ea193e23913c45a059d9fbd9">SafeDownCast</a> (<a class="el" href="a01084.html">vtkObject</a> *o)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static <a class="el" href="a01171.html">vtkParametricRandomHills</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#1c35b9363e368176762f0e43fa7ca02a">New</a> ()</td></tr>
<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#f38c5ff92e16c68152591be51e82ee70">vtkParametricRandomHills</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#69c8c69c5cc8d5db0d3d2b6ffbfc563f">~vtkParametricRandomHills</a> ()</td></tr>
<tr><td colspan="2"><br><h2>Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#5274c4c1d88053d4d09018179bf81be7">NumberOfHills</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#6fe6b1f7d631e7c0c207406d5ef3bab4">HillXVariance</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#815ae28443e4436a646e2247e9076dce">HillYVariance</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#94bb4ae4898b6de2b9ae3655dd7346ce">HillAmplitude</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#a550b3f9563afeafce6070e5c66776b3">RandomSeed</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#8252a8619960f75c3007ba5e2fed53f3">XVarianceScaleFactor</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#6d0e428f28b8276517e4e618f44b0ceb">YVarianceScaleFactor</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#5ab868664e7128b6807b767d16a50c18">AmplitudeScaleFactor</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="a01171.html#1a1e10e5823d851509ce052a6c85b092">AllowRandomGeneration</a></td></tr>
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<hr><h2>Member Typedef Documentation</h2>
<a class="anchor" name="292fce3779b48a07be06318ab6b00400"></a><!-- doxytag: member="vtkParametricRandomHills::Superclass" ref="292fce3779b48a07be06318ab6b00400" args="" -->
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<td class="memname">typedef <a class="el" href="a01167.html">vtkParametricFunction</a> <a class="el" href="a01167.html">vtkParametricRandomHills::Superclass</a> </td>
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<p>Reimplemented from <a class="el" href="a01167.html#d7fca5ab1b9a89bf42a5250f37723ccc">vtkParametricFunction</a>.</p>
<p>Definition at line <a class="el" href="a03896.html#l00044">44</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="f38c5ff92e16c68152591be51e82ee70"></a><!-- doxytag: member="vtkParametricRandomHills::vtkParametricRandomHills" ref="f38c5ff92e16c68152591be51e82ee70" args="()" -->
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<td class="memname">vtkParametricRandomHills::vtkParametricRandomHills </td>
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<td><code> [protected]</code></td>
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<a class="anchor" name="69c8c69c5cc8d5db0d3d2b6ffbfc563f"></a><!-- doxytag: member="vtkParametricRandomHills::~vtkParametricRandomHills" ref="69c8c69c5cc8d5db0d3d2b6ffbfc563f" args="()" -->
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<td class="memname">vtkParametricRandomHills::~vtkParametricRandomHills </td>
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<td class="paramname"> </td>
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<td><code> [protected]</code></td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="b0be15b76d80a1251bf5a7f7f8a9d83e"></a><!-- doxytag: member="vtkParametricRandomHills::GetClassName" ref="b0be15b76d80a1251bf5a7f7f8a9d83e" args="()" -->
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<td class="memname">virtual const char* vtkParametricRandomHills::GetClassName </td>
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<td><code> [virtual]</code></td>
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<p>Reimplemented from <a class="el" href="a01167.html#2e2ec66b0449ae8aa8fe951b719e0b5d">vtkParametricFunction</a>.</p>
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<a class="anchor" name="ec3b24a1bf07c2e4e284eeeae29f4c8e"></a><!-- doxytag: member="vtkParametricRandomHills::IsTypeOf" ref="ec3b24a1bf07c2e4e284eeeae29f4c8e" args="(const char *type)" -->
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<td class="memname">static int vtkParametricRandomHills::IsTypeOf </td>
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Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
<p>Reimplemented from <a class="el" href="a01167.html#34ffcb5ba42bc0507abaecc4981b999b">vtkParametricFunction</a>.</p>
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<a class="anchor" name="695bebd7755f727e0eb2f12193484fbf"></a><!-- doxytag: member="vtkParametricRandomHills::IsA" ref="695bebd7755f727e0eb2f12193484fbf" args="(const char *type)" -->
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<td class="memname">virtual int vtkParametricRandomHills::IsA </td>
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Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
<p>Reimplemented from <a class="el" href="a01167.html#d36b92de64d02926faad0ed48448f401">vtkParametricFunction</a>.</p>
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<a class="anchor" name="0efeac69ea193e23913c45a059d9fbd9"></a><!-- doxytag: member="vtkParametricRandomHills::SafeDownCast" ref="0efeac69ea193e23913c45a059d9fbd9" args="(vtkObject *o)" -->
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<td class="memname">static <a class="el" href="a01171.html">vtkParametricRandomHills</a>* vtkParametricRandomHills::SafeDownCast </td>
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<td class="paramtype"><a class="el" href="a01084.html">vtkObject</a> * </td>
<td class="paramname"> <em>o</em> </td>
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<td><code> [static]</code></td>
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<p>Reimplemented from <a class="el" href="a01167.html#ee93e763930b887d9cbb325fb5fff997">vtkParametricFunction</a>.</p>
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<a class="anchor" name="2f4c49561182db250e81b756b832047b"></a><!-- doxytag: member="vtkParametricRandomHills::PrintSelf" ref="2f4c49561182db250e81b756b832047b" args="(ostream &os, vtkIndent indent)" -->
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<td class="memname">void vtkParametricRandomHills::PrintSelf </td>
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<td class="paramname"> <em>os</em>, </td>
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<td class="paramtype"><a class="el" href="a00869.html">vtkIndent</a> </td>
<td class="paramname"> <em>indent</em></td><td> </td>
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Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use <a class="el" href="a01085.html#edadf6378465fd81c2592ef64262e2a5">Print()</a> instead) but used in the hierarchical print process to combine the output of several classes.
<p>Reimplemented from <a class="el" href="a01167.html#df5f1a91e154220007690f2a4c1e3969">vtkParametricFunction</a>.</p>
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<a class="anchor" name="40ba2c6d9d0f4bcbb60bdaf50dd2a1e2"></a><!-- doxytag: member="vtkParametricRandomHills::GetDimension" ref="40ba2c6d9d0f4bcbb60bdaf50dd2a1e2" args="()" -->
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<td class="memname">virtual int vtkParametricRandomHills::GetDimension </td>
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Return the parametric dimension of the class.
<p>Implements <a class="el" href="a01167.html#093975fadf60dc8ce3ea0baac1b2ca34">vtkParametricFunction</a>.</p>
<p>Definition at line <a class="el" href="a03896.html#l00048">48</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<a class="anchor" name="1c35b9363e368176762f0e43fa7ca02a"></a><!-- doxytag: member="vtkParametricRandomHills::New" ref="1c35b9363e368176762f0e43fa7ca02a" args="()" -->
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<td class="memname">static <a class="el" href="a01171.html">vtkParametricRandomHills</a>* vtkParametricRandomHills::New </td>
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<td><code> [static]</code></td>
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Construct a surface of random hills with the following parameters: MinimumU = -10, MaximumU = 10, MinimumV = -10, MaximumV = 10, JoinU = 0, JoinV = 0, TwistU = 0, TwistV = 0; ClockwiseOrdering = 1, DerivativesAvailable = 0, Number of hills = 30, Variance of the hills 2.5 in both x- and y- directions, Scaling factor for the variances 1/3 in both x- and y- directions, Amplitude of each hill = 1, Scaling factor for the amplitude = 1/3, RandomSeed = 1, AllowRandomGeneration = 1.
<p>Reimplemented from <a class="el" href="a01084.html#4d5b227267c076d6f9e38483370b6612">vtkObject</a>.</p>
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<a class="anchor" name="0e3e1d0ce558547c0485bb0b5dfa2eb5"></a><!-- doxytag: member="vtkParametricRandomHills::SetNumberOfHills" ref="0e3e1d0ce558547c0485bb0b5dfa2eb5" args="(int)" -->
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<td class="memname">virtual void vtkParametricRandomHills::SetNumberOfHills </td>
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<td class="paramtype">int </td>
<td class="paramname"> </td>
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<td><code> [virtual]</code></td>
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Set/Get the number of hills. Default is 30.
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<a class="anchor" name="698fb41d035ce4110bcafce98efb12de"></a><!-- doxytag: member="vtkParametricRandomHills::GetNumberOfHills" ref="698fb41d035ce4110bcafce98efb12de" args="()" -->
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<td class="memname">virtual int vtkParametricRandomHills::GetNumberOfHills </td>
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<td><code> [virtual]</code></td>
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Set/Get the number of hills. Default is 30.
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<a class="anchor" name="bbb32b0077f7af36eaab1779e1805390"></a><!-- doxytag: member="vtkParametricRandomHills::SetHillXVariance" ref="bbb32b0077f7af36eaab1779e1805390" args="(double)" -->
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<td class="memname">virtual void vtkParametricRandomHills::SetHillXVariance </td>
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Set/Get the hill variance in the x-direction. Default is 2.5.
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<a class="anchor" name="aefdb0132e19b0dacaeffe87a3a6b398"></a><!-- doxytag: member="vtkParametricRandomHills::GetHillXVariance" ref="aefdb0132e19b0dacaeffe87a3a6b398" args="()" -->
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<td class="memname">virtual double vtkParametricRandomHills::GetHillXVariance </td>
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Set/Get the hill variance in the x-direction. Default is 2.5.
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<a class="anchor" name="b9db9da469f6532e121c888be2bd8a3b"></a><!-- doxytag: member="vtkParametricRandomHills::SetHillYVariance" ref="b9db9da469f6532e121c888be2bd8a3b" args="(double)" -->
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<td class="memname">virtual void vtkParametricRandomHills::SetHillYVariance </td>
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<td><code> [virtual]</code></td>
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Set/Get the hill variance in the y-direction. Default is 2.5.
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<a class="anchor" name="edb3d840cbc4e4e964752e5a2119358b"></a><!-- doxytag: member="vtkParametricRandomHills::GetHillYVariance" ref="edb3d840cbc4e4e964752e5a2119358b" args="()" -->
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<td class="memname">virtual double vtkParametricRandomHills::GetHillYVariance </td>
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<td><code> [virtual]</code></td>
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Set/Get the hill variance in the y-direction. Default is 2.5.
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<a class="anchor" name="ca97c493dd48e30b07bff5afdaa1a3ee"></a><!-- doxytag: member="vtkParametricRandomHills::SetHillAmplitude" ref="ca97c493dd48e30b07bff5afdaa1a3ee" args="(double)" -->
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<td class="memname">virtual void vtkParametricRandomHills::SetHillAmplitude </td>
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Set/Get the hill amplitude (height). Default is 2.
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<a class="anchor" name="106fe29eaffcb12d699af76b9a1a183b"></a><!-- doxytag: member="vtkParametricRandomHills::GetHillAmplitude" ref="106fe29eaffcb12d699af76b9a1a183b" args="()" -->
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<td class="memname">virtual double vtkParametricRandomHills::GetHillAmplitude </td>
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Set/Get the hill amplitude (height). Default is 2.
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<a class="anchor" name="b7fb59bd467f666f521f6b66feb2a530"></a><!-- doxytag: member="vtkParametricRandomHills::SetRandomSeed" ref="b7fb59bd467f666f521f6b66feb2a530" args="(int)" -->
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<td class="memname">virtual void vtkParametricRandomHills::SetRandomSeed </td>
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<td><code> [virtual]</code></td>
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Set/Get the Seed for the random number generator, a value of 1 will initialize the random number generator, a negative value will initialize it with the system time. Default is 1.
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<a class="anchor" name="5d136dde4d91c34f9a57cbbc75922822"></a><!-- doxytag: member="vtkParametricRandomHills::GetRandomSeed" ref="5d136dde4d91c34f9a57cbbc75922822" args="()" -->
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<td class="memname">virtual int vtkParametricRandomHills::GetRandomSeed </td>
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<td><code> [virtual]</code></td>
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Set/Get the Seed for the random number generator, a value of 1 will initialize the random number generator, a negative value will initialize it with the system time. Default is 1.
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<a class="anchor" name="d932721ea228eace4dc059539992aeff"></a><!-- doxytag: member="vtkParametricRandomHills::SetAllowRandomGeneration" ref="d932721ea228eace4dc059539992aeff" args="(int)" -->
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<td class="memname">virtual void vtkParametricRandomHills::SetAllowRandomGeneration </td>
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Set/Get the random generation flag. A value of 0 will disable the generation of random hills on the surface. This allows a reproducible shape to be generated. Any other value means that the generation of the hills will be done randomly. Default is 1.
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<a class="anchor" name="c02aea9460f80ccdafd0b8bd51075ae9"></a><!-- doxytag: member="vtkParametricRandomHills::GetAllowRandomGeneration" ref="c02aea9460f80ccdafd0b8bd51075ae9" args="()" -->
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<td class="memname">virtual int vtkParametricRandomHills::GetAllowRandomGeneration </td>
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Set/Get the random generation flag. A value of 0 will disable the generation of random hills on the surface. This allows a reproducible shape to be generated. Any other value means that the generation of the hills will be done randomly. Default is 1.
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<a class="anchor" name="1940057280556fb7955dc8e61153376a"></a><!-- doxytag: member="vtkParametricRandomHills::AllowRandomGenerationOn" ref="1940057280556fb7955dc8e61153376a" args="()" -->
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<td class="memname">virtual void vtkParametricRandomHills::AllowRandomGenerationOn </td>
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Set/Get the random generation flag. A value of 0 will disable the generation of random hills on the surface. This allows a reproducible shape to be generated. Any other value means that the generation of the hills will be done randomly. Default is 1.
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<a class="anchor" name="15ada69f661af9991020c8f1b2a57599"></a><!-- doxytag: member="vtkParametricRandomHills::AllowRandomGenerationOff" ref="15ada69f661af9991020c8f1b2a57599" args="()" -->
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<td class="memname">virtual void vtkParametricRandomHills::AllowRandomGenerationOff </td>
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<td><code> [virtual]</code></td>
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<p>
Set/Get the random generation flag. A value of 0 will disable the generation of random hills on the surface. This allows a reproducible shape to be generated. Any other value means that the generation of the hills will be done randomly. Default is 1.
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<a class="anchor" name="aa26d9bce582fe0f18fc1d974ea0e460"></a><!-- doxytag: member="vtkParametricRandomHills::SetXVarianceScaleFactor" ref="aa26d9bce582fe0f18fc1d974ea0e460" args="(double)" -->
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<td class="memname">virtual void vtkParametricRandomHills::SetXVarianceScaleFactor </td>
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<td class="paramtype">double </td>
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<td><code> [virtual]</code></td>
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Set/Get the scaling factor for the variance in the x-direction. Default is 1/3.
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<a class="anchor" name="dc9f05672d93ac2f55dfb5ecad7d0b33"></a><!-- doxytag: member="vtkParametricRandomHills::GetXVarianceScaleFactor" ref="dc9f05672d93ac2f55dfb5ecad7d0b33" args="()" -->
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<td class="memname">virtual double vtkParametricRandomHills::GetXVarianceScaleFactor </td>
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Set/Get the scaling factor for the variance in the x-direction. Default is 1/3.
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<a class="anchor" name="06b26610cfad941e0533f7e14cf6607d"></a><!-- doxytag: member="vtkParametricRandomHills::SetYVarianceScaleFactor" ref="06b26610cfad941e0533f7e14cf6607d" args="(double)" -->
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<td class="memname">virtual void vtkParametricRandomHills::SetYVarianceScaleFactor </td>
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Set/Get the scaling factor for the variance in the y-direction. Default is 1/3.
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<a class="anchor" name="dc1449fb13c774b72eb76d619678f299"></a><!-- doxytag: member="vtkParametricRandomHills::GetYVarianceScaleFactor" ref="dc1449fb13c774b72eb76d619678f299" args="()" -->
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<td class="memname">virtual double vtkParametricRandomHills::GetYVarianceScaleFactor </td>
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Set/Get the scaling factor for the variance in the y-direction. Default is 1/3.
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<a class="anchor" name="7bb77c7cec738f5c73f5364168092339"></a><!-- doxytag: member="vtkParametricRandomHills::SetAmplitudeScaleFactor" ref="7bb77c7cec738f5c73f5364168092339" args="(double)" -->
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<td class="memname">virtual void vtkParametricRandomHills::SetAmplitudeScaleFactor </td>
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Set/Get the scaling factor for the amplitude. Default is 1/3.
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<a class="anchor" name="8112b58873f4f44f8f7140f0ba6c1fcb"></a><!-- doxytag: member="vtkParametricRandomHills::GetAmplitudeScaleFactor" ref="8112b58873f4f44f8f7140f0ba6c1fcb" args="()" -->
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<td class="memname">virtual double vtkParametricRandomHills::GetAmplitudeScaleFactor </td>
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Set/Get the scaling factor for the amplitude. Default is 1/3.
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<a class="anchor" name="b642302915974f7723b0d078523e4cde"></a><!-- doxytag: member="vtkParametricRandomHills::GenerateTheHills" ref="b642302915974f7723b0d078523e4cde" args="(void)" -->
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<td class="memname">void vtkParametricRandomHills::GenerateTheHills </td>
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Generate the centers of the hills, their standard deviations and their amplitudes. This function creates a series of vectors representing the u, v coordinates of each hill, its variance in the u, v directions and the amplitude. NOTE: This function must be called whenever any of the parameters are changed.
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<a class="anchor" name="e3e68b55709cf910869e48edb5b02f19"></a><!-- doxytag: member="vtkParametricRandomHills::Evaluate" ref="e3e68b55709cf910869e48edb5b02f19" args="(double uvw[3], double Pt[3], double Duvw[9])" -->
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Construct a terrain consisting of randomly placed hills on a surface. It is assumed that the function <a class="el" href="a01171.html#b642302915974f7723b0d078523e4cde">GenerateTheHills()</a> has been executed to build the vectors of coordinates required to generate the point Pt. Pt represents the sum of all the amplitudes over the space. This function performs the mapping <img class="formulaInl" alt="$f(u,v) \rightarrow (x,y,x)$" src="form_2.png">, returning it as Pt. It also returns the partial derivatives Du and Dv. <img class="formulaInl" alt="$Pt = (x, y, z), Du = (dx/du, dy/du, dz/du), Dv = (dx/dv, dy/dv, dz/dv)$" src="form_3.png"> . Then the normal is <img class="formulaInl" alt="$N = Du X Dv$" src="form_4.png"> .
<p>Implements <a class="el" href="a01167.html#5d13e377b1cff56856b60d10bb66be34">vtkParametricFunction</a>.</p>
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<a class="anchor" name="b55e2473865a3761764c4e5536edaf50"></a><!-- doxytag: member="vtkParametricRandomHills::EvaluateScalar" ref="b55e2473865a3761764c4e5536edaf50" args="(double uvw[3], double Pt[3], double Duvw[9])" -->
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<td class="memname">virtual double vtkParametricRandomHills::EvaluateScalar </td>
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Calculate a user defined scalar using one or all of uvw, Pt, Duvw. uvw are the parameters with Pt being the the Cartesian point, Duvw are the derivatives of this point with respect to u, v and w. Pt, Duvw are obtained from <a class="el" href="a01171.html#e3e68b55709cf910869e48edb5b02f19">Evaluate()</a>. This function is only called if the ScalarMode has the value <a class="el" href="a01168.html#61adb5555eafb12c84e744578920dd15a8a26a8f6dceeeb0697e50c0bec0d06e">vtkParametricFunctionSource::SCALAR_FUNCTION_DEFINED</a> If the user does not need to calculate a scalar, then the instantiated function should return zero.
<p>Implements <a class="el" href="a01167.html#bb043638834315b6f18eb049ab8fdb9e">vtkParametricFunction</a>.</p>
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<hr><h2>Member Data Documentation</h2>
<a class="anchor" name="5274c4c1d88053d4d09018179bf81be7"></a><!-- doxytag: member="vtkParametricRandomHills::NumberOfHills" ref="5274c4c1d88053d4d09018179bf81be7" args="" -->
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<td class="memname">int <a class="el" href="a01171.html#5274c4c1d88053d4d09018179bf81be7">vtkParametricRandomHills::NumberOfHills</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a03896.html#l00154">154</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<a class="anchor" name="6fe6b1f7d631e7c0c207406d5ef3bab4"></a><!-- doxytag: member="vtkParametricRandomHills::HillXVariance" ref="6fe6b1f7d631e7c0c207406d5ef3bab4" args="" -->
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<td class="memname">double <a class="el" href="a01171.html#6fe6b1f7d631e7c0c207406d5ef3bab4">vtkParametricRandomHills::HillXVariance</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a03896.html#l00155">155</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<a class="anchor" name="815ae28443e4436a646e2247e9076dce"></a><!-- doxytag: member="vtkParametricRandomHills::HillYVariance" ref="815ae28443e4436a646e2247e9076dce" args="" -->
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<td class="memname">double <a class="el" href="a01171.html#815ae28443e4436a646e2247e9076dce">vtkParametricRandomHills::HillYVariance</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a03896.html#l00156">156</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<a class="anchor" name="94bb4ae4898b6de2b9ae3655dd7346ce"></a><!-- doxytag: member="vtkParametricRandomHills::HillAmplitude" ref="94bb4ae4898b6de2b9ae3655dd7346ce" args="" -->
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<td class="memname">double <a class="el" href="a01171.html#94bb4ae4898b6de2b9ae3655dd7346ce">vtkParametricRandomHills::HillAmplitude</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a03896.html#l00157">157</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<a class="anchor" name="a550b3f9563afeafce6070e5c66776b3"></a><!-- doxytag: member="vtkParametricRandomHills::RandomSeed" ref="a550b3f9563afeafce6070e5c66776b3" args="" -->
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<td class="memname">int <a class="el" href="a01171.html#a550b3f9563afeafce6070e5c66776b3">vtkParametricRandomHills::RandomSeed</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a03896.html#l00158">158</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<a class="anchor" name="8252a8619960f75c3007ba5e2fed53f3"></a><!-- doxytag: member="vtkParametricRandomHills::XVarianceScaleFactor" ref="8252a8619960f75c3007ba5e2fed53f3" args="" -->
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<td class="memname">double <a class="el" href="a01171.html#8252a8619960f75c3007ba5e2fed53f3">vtkParametricRandomHills::XVarianceScaleFactor</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a03896.html#l00159">159</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<a class="anchor" name="6d0e428f28b8276517e4e618f44b0ceb"></a><!-- doxytag: member="vtkParametricRandomHills::YVarianceScaleFactor" ref="6d0e428f28b8276517e4e618f44b0ceb" args="" -->
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<td class="memname">double <a class="el" href="a01171.html#6d0e428f28b8276517e4e618f44b0ceb">vtkParametricRandomHills::YVarianceScaleFactor</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a03896.html#l00160">160</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<a class="anchor" name="5ab868664e7128b6807b767d16a50c18"></a><!-- doxytag: member="vtkParametricRandomHills::AmplitudeScaleFactor" ref="5ab868664e7128b6807b767d16a50c18" args="" -->
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<td class="memname">double <a class="el" href="a01171.html#5ab868664e7128b6807b767d16a50c18">vtkParametricRandomHills::AmplitudeScaleFactor</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a03896.html#l00161">161</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<a class="anchor" name="1a1e10e5823d851509ce052a6c85b092"></a><!-- doxytag: member="vtkParametricRandomHills::AllowRandomGeneration" ref="1a1e10e5823d851509ce052a6c85b092" args="" -->
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<td class="memname">int <a class="el" href="a01171.html#1a1e10e5823d851509ce052a6c85b092">vtkParametricRandomHills::AllowRandomGeneration</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a03896.html#l00162">162</a> of file <a class="el" href="a03896.html">vtkParametricRandomHills.h</a>.</p>
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<hr>The documentation for this class was generated from the following file:<ul>
<li>dox/Common/<a class="el" href="a03896.html">vtkParametricRandomHills.h</a></ul>
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<hr size="1"><address style="text-align: right;"><small>Generated on Wed Jun 3 19:22:40 2009 for VTK by
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