-<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">\r
-\r
-<html>\r
-\r
-<head>\r
-<title>About meshes</title>\r
-<meta http-equiv="content-type" content="text/html; charset=windows-1252">\r
-<meta name="generator" content="RoboHelp by eHelp Corporation www.ehelp.com">\r
-<link rel="stylesheet" href="../default_ns.css"><script type="text/javascript" language="JavaScript" title="WebHelpSplitCss">\r
-<!--\r
-if (navigator.appName !="Netscape")\r
-{ document.write("<link rel='stylesheet' href='../default.css'>");}\r
-//-->\r
-</script>\r
-<style type="text/css">\r
-<!--\r
-img_whs1 { border:none; width:30px; height:30px; float:none; border-style:none; }\r
-ul.whs2 { list-style:disc; }\r
-p.whs3 { text-indent:8px; }\r
-p.whs4 { text-indent:48px; }\r
-h4.whs5 { text-indent:1px; }\r
-p.whs6 { text-indent:1px; }\r
-img_whs7 { border:none; width:36px; height:38px; float:none; border-style:none; }\r
-p.whs8 { font-weight:bold; text-indent:1px; }\r
--->\r
-</style><script type="text/javascript" language="JavaScript" title="WebHelpInlineScript">\r
-<!--\r
-function reDo() {\r
- if (innerWidth != origWidth || innerHeight != origHeight)\r
- location.reload();\r
-}\r
-if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == "Netscape")) {\r
- origWidth = innerWidth;\r
- origHeight = innerHeight;\r
- onresize = reDo;\r
-}\r
-onerror = null; \r
-//-->\r
-</script>\r
-<style type="text/css">\r
-<!--\r
-div.WebHelpPopupMenu { position:absolute; left:0px; top:0px; z-index:4; visibility:hidden; }\r
-p.WebHelpNavBar { text-align:right; }\r
--->\r
-</style><script type="text/javascript" language="javascript1.2" src="../whmsg.js"></script>\r
-<script type="text/javascript" language="javascript" src="../whver.js"></script>\r
-<script type="text/javascript" language="javascript1.2" src="../whproxy.js"></script>\r
-<script type="text/javascript" language="javascript1.2" src="../whutils.js"></script>\r
-<script type="text/javascript" language="javascript1.2" src="../whtopic.js"></script>\r
-<script type="text/javascript" language="javascript1.2">\r
-<!--\r
-if (window.gbWhTopic)\r
-{\r
- if (window.setRelStartPage)\r
- {\r
- addTocInfo("MESH module\nCreating meshes\nAbout meshes");\r
-addButton("show",BTN_IMG,"Show","","","","",0,0,"../whd_show0.gif","../whd_show2.gif","../whd_show1.gif");\r
-addButton("hide",BTN_IMG,"Hide","","","","",0,0,"../whd_hide0.gif","../whd_hide2.gif","../whd_hide1.gif");\r
-\r
- }\r
-\r
-\r
- if (window.setRelStartPage)\r
- {\r
- setRelStartPage("../index.htm");\r
-\r
- autoSync(1);\r
- sendSyncInfo();\r
- sendAveInfoOut();\r
- }\r
-\r
-}\r
-else\r
- if (window.gbIE4)\r
- document.location.reload();\r
-//-->\r
-</script>\r
-</head>\r
-<body><script type="text/javascript" language="javascript1.2">\r
-<!--\r
-if (window.writeIntopicBar)\r
- writeIntopicBar(4);\r
-//-->\r
-</script>\r
-<h1>About meshes</h1>\r
-\r
-<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> <span style="font-weight: bold;"><B>MESH</B></span> represents \r
- a discretization of a geometrical CAD model into a set of entities with \r
- a simple topology. In MESH there are two options of creation of meshes, \r
- you can:</p>\r
-\r
-<p> </p>\r
-\r
-<ul type="disc" class="whs2">\r
- \r
- <li class=kadov-p><p>generate meshes on the basis of geometrical shapes \r
- produced in the GEOM module, </p></li>\r
- \r
- <li class=kadov-p><p>create your own meshes using the MESH functions \r
- destined for modification of generated meshes. </p></li>\r
-</ul>\r
-\r
-<p> </p>\r
-\r
-<p>The topology of a mesh is described by the relationships between its \r
- entities including:</p>\r
-\r
-<p class="whs3"> </p>\r
-\r
-<ul type="disc" class="whs2">\r
- \r
- <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Node</B></span> \r
- \96 0D element of a mesh presented by a point with coordinates (x, y, z).</p></li>\r
- \r
- <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Edge</B></span> \r
- \96 1D element of a mesh defined by two nodes.</p></li>\r
- \r
- <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Face</B></span> \r
- \96 2D element of a mesh defined by three or four edges (closed contour).</p></li>\r
- \r
- <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Volume</B></span> \r
- \96 3D element of a mesh defined by several faces.</p></li>\r
-</ul>\r
-\r
-<p class="whs3"> </p>\r
-\r
-<p class="whs4">These entities are considered as topological \r
- entities and they don't imply any geometric representation. Only <span \r
- style="font-weight: bold;"><B>Nodes</B></span> reference geometric \r
- representations of points with definite coordinates. <span style="text-indent: 8px;">The \r
- node entity will contain additional \r
- information about its position in the space and its relations with the \r
- meshed CAD model. Its position could be described in the following way:</span></p>\r
-\r
-<p class="whs4"> </p>\r
-\r
-<ul type="disc" class="whs2">\r
- \r
- <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>2D \r
- position</B></span>. It is a free position defined by only two coordinates \r
- x,y.</p></li>\r
- \r
- <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>3D \r
- position</B></span>. It is a free position defined by three coordinates x,y \r
- and z.</p></li>\r
- \r
- <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Surface \r
- position</B></span>. It characterizes the position of a node on a geometric \r
- surface and is defined by the u,v position in the parametric space of \r
- the corresponding surface.</p></li>\r
- \r
- <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Line \r
- position</B></span>. It characterizes the position of a node on a geometric \r
- curve and is defined by the u parameter and the corresponding curve.</p></li>\r
- \r
- <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Vertex \r
- position</B></span>. It characterizes the position of a node on a geometric \r
- point of the meshed CAD model and is defined by the x,y,z coordinates \r
- of the corresponding vertex.</p></li>\r
-</ul>\r
-\r
-<p class="whs3"> </p>\r
-\r
-<p class="whs3"> </p>\r
-\r
-<h4 class="whs5">Connections</h4>\r
-\r
-<p class="whs6">Each mesh entity bounds 0 or more mesh entities \r
- of higher dimension. In the same way each mesh entity is bounded by 0 \r
- or more mesh entities of lower dimension:</p>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<ul type="disc" class="whs2">\r
- \r
- <li class=kadov-p><p class="whs6">A node bounds edges, \r
- faces and volumes</p></li>\r
- \r
- <li class=kadov-p><p class="whs6">An edge bounds faces, \r
- and volumes</p></li>\r
- \r
- <li class=kadov-p><p class="whs6">A face bounds volumes</p></li>\r
- \r
- <li class=kadov-p><p class="whs6">A volume is bounded \r
- by faces, edges and nodes</p></li>\r
- \r
- <li class=kadov-p><p class="whs6">A face is bounded by \r
- edges, and nodes</p></li>\r
- \r
- <li class=kadov-p><p class="whs6">An edge is bounded by \r
- nodes</p></li>\r
-</ul>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<p class="whs6">You can notice that there are two types of \r
- connections: <span style="font-weight: bold;"><B>inverse</B></span> and <span \r
- style="font-weight: bold;"><B>direct</B></span> connections.</p>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<h4 class="whs5">Inverse connections</h4>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<p class="whs6">This relationship has a particularity that \r
- the order of bounded entities has not a direct meaning. Also the number \r
- of bounded entities is not fixed.</p>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<p class="whs6"><img src="../pics/exemple.gif" x-maintain-ratio="TRUE" width="36px" height="38px" border="0" class="img_whs7"> The edges surrounding a node. \r
- The 3rd edge has no more sense that the 5th one.</p>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<p class="whs8">Direct connections</p>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<p class="whs6">This relationship has a particularity that \r
- the order of bounding entities is meaningful. The number of bounding entities \r
- is fixed and depends on the type of the entity (hexahedron, tetrahedron,\85).</p>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<p class="whs6"><img src="../pics/exemple.gif" x-maintain-ratio="TRUE" width="36px" height="38px" border="0" class="img_whs7"> An edge is composed of two \r
- nodes. A face is composed of 3 or 4 edges depending if we are dealing \r
- with triangles or quadrangles.</p>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<p class="whs6">The connections are not only restricted to \r
- entities of one dimension higher or lower. For example some algorithms \r
- may be interested to retrieve all the faces surrounding a node.</p>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<p class="whs6"> </p>\r
-\r
-<script type="text/javascript" language="javascript1.2">\r
-<!--\r
-if (window.writeIntopicBar)\r
- writeIntopicBar(0);\r
-//-->\r
-</script>\r
-</body>\r
-</html>\r
+<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
+
+<html>
+
+<head>
+<title>About meshes</title>
+<meta http-equiv="content-type" content="text/html; charset=windows-1252">
+<meta name="generator" content="RoboHelp by eHelp Corporation www.ehelp.com">
+<link rel="stylesheet" href="../default_ns.css"><script type="text/javascript" language="JavaScript" title="WebHelpSplitCss">
+<!--
+if (navigator.appName !="Netscape")
+{ document.write("<link rel='stylesheet' href='../default.css'>");}
+//-->
+</script>
+<style type="text/css">
+<!--
+img_whs1 { border:none; width:30px; height:30px; float:none; border-style:none; }
+ul.whs2 { list-style:disc; }
+p.whs3 { text-indent:8px; }
+p.whs4 { text-indent:48px; }
+h4.whs5 { text-indent:1px; }
+p.whs6 { text-indent:1px; }
+img_whs7 { border:none; width:36px; height:38px; float:none; border-style:none; }
+p.whs8 { font-weight:bold; text-indent:1px; }
+-->
+</style><script type="text/javascript" language="JavaScript" title="WebHelpInlineScript">
+<!--
+function reDo() {
+ if (innerWidth != origWidth || innerHeight != origHeight)
+ location.reload();
+}
+if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == "Netscape")) {
+ origWidth = innerWidth;
+ origHeight = innerHeight;
+ onresize = reDo;
+}
+onerror = null;
+//-->
+</script>
+<style type="text/css">
+<!--
+div.WebHelpPopupMenu { position:absolute; left:0px; top:0px; z-index:4; visibility:hidden; }
+p.WebHelpNavBar { text-align:right; }
+-->
+</style><script type="text/javascript" language="javascript1.2" src="../whmsg.js"></script>
+<script type="text/javascript" language="javascript" src="../whver.js"></script>
+<script type="text/javascript" language="javascript1.2" src="../whproxy.js"></script>
+<script type="text/javascript" language="javascript1.2" src="../whutils.js"></script>
+<script type="text/javascript" language="javascript1.2" src="../whtopic.js"></script>
+<script type="text/javascript" language="javascript1.2">
+<!--
+if (window.gbWhTopic)
+{
+ if (window.setRelStartPage)
+ {
+ addTocInfo("MESH module\nCreating meshes\nAbout meshes");
+addButton("show",BTN_IMG,"Show","","","","",0,0,"../whd_show0.gif","../whd_show2.gif","../whd_show1.gif");
+addButton("hide",BTN_IMG,"Hide","","","","",0,0,"../whd_hide0.gif","../whd_hide2.gif","../whd_hide1.gif");
+
+ }
+
+
+ if (window.setRelStartPage)
+ {
+ setRelStartPage("../index.htm");
+
+ autoSync(1);
+ sendSyncInfo();
+ sendAveInfoOut();
+ }
+
+}
+else
+ if (window.gbIE4)
+ document.location.reload();
+//-->
+</script>
+</head>
+<body><script type="text/javascript" language="javascript1.2">
+<!--
+if (window.writeIntopicBar)
+ writeIntopicBar(4);
+//-->
+</script>
+<h1>About meshes</h1>
+
+<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> <span style="font-weight: bold;"><B>MESH</B></span> represents
+ a discretization of a geometrical CAD model into a set of entities with
+ a simple topology. In MESH there are two options of creation of meshes,
+ you can:</p>
+
+<p> </p>
+
+<ul type="disc" class="whs2">
+
+ <li class=kadov-p><p>generate meshes on the basis of geometrical shapes
+ produced in the GEOM module, </p></li>
+
+ <li class=kadov-p><p>create your own meshes using the MESH functions
+ destined for modification of generated meshes. </p></li>
+</ul>
+
+<p> </p>
+
+<p>The topology of a mesh is described by the relationships between its
+ entities including:</p>
+
+<p class="whs3"> </p>
+
+<ul type="disc" class="whs2">
+
+ <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Node</B></span>
+ \96 0D element of a mesh presented by a point with coordinates (x, y, z).</p></li>
+
+ <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Edge</B></span>
+ \96 1D element of a mesh defined by two nodes.</p></li>
+
+ <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Face</B></span>
+ \96 2D element of a mesh defined by three or four edges (closed contour).</p></li>
+
+ <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Volume</B></span>
+ \96 3D element of a mesh defined by several faces.</p></li>
+</ul>
+
+<p class="whs3"> </p>
+
+<p class="whs4">These entities are considered as topological
+ entities and they don't imply any geometric representation. Only <span
+ style="font-weight: bold;"><B>Nodes</B></span> reference geometric
+ representations of points with definite coordinates. <span style="text-indent: 8px;">The
+ node entity will contain additional
+ information about its position in the space and its relations with the
+ meshed CAD model. Its position could be described in the following way:</span></p>
+
+<p class="whs4"> </p>
+
+<ul type="disc" class="whs2">
+
+ <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>2D
+ position</B></span>. It is a free position defined by only two coordinates
+ x,y.</p></li>
+
+ <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>3D
+ position</B></span>. It is a free position defined by three coordinates x,y
+ and z.</p></li>
+
+ <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Surface
+ position</B></span>. It characterizes the position of a node on a geometric
+ surface and is defined by the u,v position in the parametric space of
+ the corresponding surface.</p></li>
+
+ <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Line
+ position</B></span>. It characterizes the position of a node on a geometric
+ curve and is defined by the u parameter and the corresponding curve.</p></li>
+
+ <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Vertex
+ position</B></span>. It characterizes the position of a node on a geometric
+ point of the meshed CAD model and is defined by the x,y,z coordinates
+ of the corresponding vertex.</p></li>
+</ul>
+
+<p class="whs3"> </p>
+
+<p class="whs3"> </p>
+
+<h4 class="whs5">Connections</h4>
+
+<p class="whs6">Each mesh entity bounds 0 or more mesh entities
+ of higher dimension. In the same way each mesh entity is bounded by 0
+ or more mesh entities of lower dimension:</p>
+
+<p class="whs6"> </p>
+
+<ul type="disc" class="whs2">
+
+ <li class=kadov-p><p class="whs6">A node bounds edges,
+ faces and volumes</p></li>
+
+ <li class=kadov-p><p class="whs6">An edge bounds faces,
+ and volumes</p></li>
+
+ <li class=kadov-p><p class="whs6">A face bounds volumes</p></li>
+
+ <li class=kadov-p><p class="whs6">A volume is bounded
+ by faces, edges and nodes</p></li>
+
+ <li class=kadov-p><p class="whs6">A face is bounded by
+ edges, and nodes</p></li>
+
+ <li class=kadov-p><p class="whs6">An edge is bounded by
+ nodes</p></li>
+</ul>
+
+<p class="whs6"> </p>
+
+<p class="whs6">You can notice that there are two types of
+ connections: <span style="font-weight: bold;"><B>inverse</B></span> and <span
+ style="font-weight: bold;"><B>direct</B></span> connections.</p>
+
+<p class="whs6"> </p>
+
+<h4 class="whs5">Inverse connections</h4>
+
+<p class="whs6"> </p>
+
+<p class="whs6">This relationship has a particularity that
+ the order of bounded entities has not a direct meaning. Also the number
+ of bounded entities is not fixed.</p>
+
+<p class="whs6"> </p>
+
+<p class="whs6"><img src="../pics/exemple.gif" x-maintain-ratio="TRUE" width="36px" height="38px" border="0" class="img_whs7"> The edges surrounding a node.
+ The 3rd edge has no more sense that the 5th one.</p>
+
+<p class="whs6"> </p>
+
+<p class="whs8">Direct connections</p>
+
+<p class="whs6"> </p>
+
+<p class="whs6">This relationship has a particularity that
+ the order of bounding entities is meaningful. The number of bounding entities
+ is fixed and depends on the type of the entity (hexahedron, tetrahedron,\85).</p>
+
+<p class="whs6"> </p>
+
+<p class="whs6"><img src="../pics/exemple.gif" x-maintain-ratio="TRUE" width="36px" height="38px" border="0" class="img_whs7"> An edge is composed of two
+ nodes. A face is composed of 3 or 4 edges depending if we are dealing
+ with triangles or quadrangles.</p>
+
+<p class="whs6"> </p>
+
+<p class="whs6">The connections are not only restricted to
+ entities of one dimension higher or lower. For example some algorithms
+ may be interested to retrieve all the faces surrounding a node.</p>
+
+<p class="whs6"> </p>
+
+<p class="whs6"> </p>
+
+<p class="whs6"> </p>
+
+<script type="text/javascript" language="javascript1.2">
+<!--
+if (window.writeIntopicBar)
+ writeIntopicBar(0);
+//-->
+</script>
+</body>
+</html>
