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tri_surface_to_stla.html
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<html>
<head>
<title>
TRI_SURFACE_TO_STLA - Convert data from TRI_SURFACE to ASCII STL
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
TRI_SURFACE_TO_STLA <br> Convert data from TRI_SURFACE to ASCII STL
</h1>
<hr>
<p>
<b>TRI_SURFACE_TO_STLA</b>
is a MATLAB program which
reads data from a <b>TRI_SURFACE</b> file describing a triangular
mesh of a 3D surface, and converts it to an ASCII <b>STL</b> file.
</p>
<p>
A <b>TRI_SURFACE</b> or triangulated mesh surface, is described by a
pair of arrays:
<ul>
<li>
a <b>node coordinate</b> array containing the coordinates of nodes;
</li>
<li>
a <b>triangle node</b> array containing triples of the indices
of the nodes used to form each triangle;
</li>
</ul>
</p>
<p>
An ASCII <b>STL</b> file contains a description of the surface of a solid
that has been decomposed into triangles. The vertices of the triangles should
be listed in counterclockwise order, as viewed from outside the surface.
A normal vector for the triangle may also be listed.
</p>
<h3 align = "center">
Usage:
</h3>
<p>
<blockquote>
<b>tri_surface_to_stla</b> ( <i>'node_filename'</i>, <i>'element_filename'</i>,
<i>'stla_filename'</i> )
</blockquote>
where
<ul>
<li>
<i>'node_filename'</i> is the name of the TRI_SURFACE node file;
</li>
<li>
<i>'element_filename'</i> is the name of the TRI_SURFACE element file;
</li>
<li>
<i>'stla_filename'</i> is the name of the ASCII STL file to be created.
</li>
</ul>
</p>
<h3 align = "center">
Licensing:
</h3>
<p>
The computer code and data files described and made available on this web page
are distributed under
<a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
</p>
<h3 align = "center">
Languages:
</h3>
<p>
<b>TRI_SURFACE_TO_STLA</b> is available in
<a href = "../../m_src/tri_surface_to_stla/tri_surface_to_stla.html">a MATLAB version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../m_src/obj_to_tri_surface/obj_to_tri_surface.html">
OBJ_TO_TRI_SURFACE</a>,
a MATLAB program which
reads an <a href = "../../data/obj/obj.html">OBJ file</a>, and extracts
the surface mesh data as a TRI_SURFACE dataset.
</p>
<p>
<a href = "../../m_src/ply_to_tri_surface/ply_to_tri_surface.html">
PLY_TO_TRI_SURFACE</a>,
a MATLAB program which
reads a <a href = "../../data/ply/ply.html">PLY file</a>, and extracts
the surface mesh data as a
<a href = "../../data/tri_surface/tri_surface.html">TRI_SURFACE</a> dataset.
</p>
<p>
<a href = "../../data/stla/stla.html">
STLA</a>,
a data directory which
contains a description and examples of <b>STLA</b> files.
</p>
<p>
<a href = "../../m_src/stla_display/stla_display.html">
STLA_DISPLAY</a>,
a MATLAB program which
reads an ASCII <b>STL</b> file and displays it.
</p>
<p>
<a href = "../../m_src/stla_io/stla_io.html">
STLA_IO</a>,
a MATLAB library which
reads or writes a <b>PLY</b> file.
</p>
<p>
<a href = "../../m_src/stla_to_tri_surface/stla_to_tri_surface.html">
STLA_TO_TRI_SURFACE</a>,
a MATLAB program which
converts ASCII <b>STL</b> graphics data to <b>TRI_SURFACE</b> data.
</p>
<p>
<a href = "../../data/tri_surface/tri_surface.html">
TRI_SURFACE</a>,
a data directory which
contains examples of <b>TRI_SURFACE</b> files.
</p>
<p>
<a href = "../../m_src/tri_surface_display/tri_surface_display.html">
TRI_SURFACE_DISPLAY</a>,
a MATLAB program which
displays a TRI_SURFACE.
</p>
<p>
<a href = "../../m_src/tri_surface_io/tri_surface_io.html">
TRI_SURFACE_IO</a>,
a MATLAB library which
reads and writes the 3D graphics information
in a <a href = "../../data/tri_surface/tri_surface.html">TRI_SURFACE</a> file;
</p>
<p>
<a href = "../../m_src/tri_surface_to_obj/tri_surface_to_obj.html">
TRI_SURFACE_TO_OBJ</a>,
a MATLAB program which
reads a
<a href = "../data/tri_surface/tri_surface.html">TRI_SURFACE</a> dataset and extracts
the surface mesh data as an
<a href = "../data/obj/obj.html">OBJ file</a>.
</p>
<p>
<a href = "../../m_src/tri_surface_to_ply/tri_surface_to_ply.html">
TRI_SURFACE_TO_PLY</a>,
a MATLAB program which
converts <b>TRI_SURFACE</b> data to
data suitable for storage as a PLY file.
</p>
<h3 align = "center">
Reference:
</h3>
<p>
<ol>
<li>
3D Systems, Inc,<br>
Stereolithography Interface Specification,<br>
October 1989.
</li>
</ol>
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "tri_surface_to_stla.m">tri_surface_to_stla.m</a>
the source code.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<b>CUBE</b> is a cube using 12 triangular faces and 36 nodes.
<ul>
<li>
<a href = "cube_nodes.txt">cube_nodes.txt</a>
the TRI_SURFACE nodes file.
</li>
<li>
<a href = "cube_elements.txt">cube_elements.txt</a>
the TRI_SURFACE element file.
</li>
<li>
<a href = "cube.stla">cube.stla</a>
the STLA file.
</li>
<li>
<a href = "cube.png">cube.png</a>,
a PNG image of the shape;
</li>
</ul>
</p>
<p>
<b>MAGNOLIA</b> is a magnolia blossom, using 1247 triangular faces
and 3741 nodes.
<ul>
<li>
<a href = "magnolia_nodes.txt">magnolia_nodes.txt</a>
the TRI_SURFACE nodes file.
</li>
<li>
<a href = "magnolia_elements.txt">magnolia_elements.txt</a>
the TRI_SURFACE element file.
</li>
<li>
<a href = "magnolia.stla">magnolia.stla</a>,
the ASCII STL file;
</li>
<li>
<a href = "magnolia.png">magnolia.png</a>,
a PNG image of the shape;
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../m_src.html">
the MATLAB source codes</a>.
</p>
<hr>
<i>
Last revised on 16 August 2009.
</i>
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