1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<title>FreeMat: vtkImplicitVolume</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
$(document).ready(initResizable);
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">FreeMat
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.1.1 -->
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li class="current"><a href="pages.html"><span>Related Pages</span></a></li>
</ul>
</div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
$(document).ready(function(){initNavTree('vtkfiltering_vtkimplicitvolume.html','');});
</script>
<div id="doc-content">
<div class="header">
<div class="headertitle">
<div class="title">vtkImplicitVolume </div> </div>
</div><!--header-->
<div class="contents">
<div class="textblock"><p>Section: <a class="el" href="sec_vtkfiltering.html">Visualization Toolkit Filtering Classes</a> </p>
<h1><a class="anchor" id="Usage"></a>
Usage</h1>
<p>vtkImplicitVolume treats a volume (e.g., structured point dataset) as if it were an implicit function. This means it computes a function value and gradient. vtkImplicitVolume is a concrete implementation of vtkImplicitFunction.</p>
<p>vtkImplicitDataSet computes the function (at the point x) by performing cell interpolation. That is, it finds the cell containing x, and then uses the cell's interpolation functions to compute an interpolated scalar value at x. (A similar approach is used to find the gradient, if requested.) Points outside of the dataset are assigned the value of the ivar OutValue, and the gradient value OutGradient.</p>
<p>To create an instance of class vtkImplicitVolume, simply invoke its constructor as follows </p>
<pre class="fragment"> obj = vtkImplicitVolume
</pre> <h1><a class="anchor" id="Methods"></a>
Methods</h1>
<p>The class vtkImplicitVolume has several methods that can be used. They are listed below. Note that the documentation is translated automatically from the VTK sources, and may not be completely intelligible. When in doubt, consult the VTK website. In the methods listed below, <code>obj</code> is an instance of the vtkImplicitVolume class. </p>
<ul>
<li>
<code>string = obj.GetClassName ()</code> </li>
<li>
<code>int = obj.IsA (string name)</code> </li>
<li>
<code>vtkImplicitVolume = obj.NewInstance ()</code> </li>
<li>
<code>vtkImplicitVolume = obj.SafeDownCast (vtkObject o)</code> </li>
<li>
<code>long = obj.GetMTime ()</code> - Returns the mtime also considering the volume. This also calls Update on the volume, and it therefore must be called before the function is evaluated. </li>
<li>
<code>double = obj.EvaluateFunction (double x[3])</code> </li>
<li>
<code>double = obj.EvaluateFunction (double x, double y, double z)</code> </li>
<li>
<code>obj.EvaluateGradient (double x[3], double n[3])</code> </li>
<li>
<code>obj.SetVolume (vtkImageData )</code> - Specify the volume for the implicit function. </li>
<li>
<code>vtkImageData = obj.GetVolume ()</code> - Specify the volume for the implicit function. </li>
<li>
<code>obj.SetOutValue (double )</code> - Set the function value to use for points outside of the dataset. </li>
<li>
<code>double = obj.GetOutValue ()</code> - Set the function value to use for points outside of the dataset. </li>
<li>
<code>obj.SetOutGradient (double , double , double )</code> - Set the function gradient to use for points outside of the dataset. </li>
<li>
<code>obj.SetOutGradient (double a[3])</code> - Set the function gradient to use for points outside of the dataset. </li>
<li>
<code>double = obj. GetOutGradient ()</code> - Set the function gradient to use for points outside of the dataset. </li>
</ul>
</div></div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="navelem"><a class="el" href="index.html">FreeMat Documentation</a></li><li class="navelem"><a class="el" href="sec_vtkfiltering.html">Visualization Toolkit Filtering Classes</a></li>
<li class="footer">Generated on Thu Jul 25 2013 17:18:30 for FreeMat by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.1.1 </li>
</ul>
</div>
</body>
</html>
|
