geom/doc/salome/gui/GEOM/local_coordinate_system.htm
2006-02-07 15:58:35 +00:00

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<title>Local Coordinate System</title>
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<h1><span style="font-size: 12pt;"><font size=3 style="font-size:12pt;"><img src="image35.gif" width="16px" height="16px" border="0" class="img_whs1"></font></span>Local Coordinate
System</h1>
<p>To create a <span style="font-weight: bold;"><B>Local Coordinate System</B></span>
in the <span style="font-weight: bold;"><B>Main Menu</B></span> select <span
style="font-weight: bold;"><B>New Entity - &gt; Basic - &gt; Local Coordinate
System</B></span></p>
<p class="whs2">There are three algorithms to choose from.</p>
<p class="whs2">&nbsp;</p>
<p class="whs2">Firstly, you can by yourselves the values of
X, Y, and Z coordinates of origin and the directions of X and Y axes<span>.</span></p>
<p class="whs2"><span style="font-weight: bold;"><B>TUI command:</B></span>
<span style="font-style: italic;"><I>geompy.MakeMarker(OX, OY, OZ, XDX, XDY,
XDZ, YDX, YDY, YDZ)</I></span>, where OX, OY, OZ are coordinates of the origin
of LCS, XDX, XDY, XDZ is a vector of OX &nbsp;direction
of the LCS and YDX, YDY, YDZ is a a vector of OY direction of the LCS.</p>
<p class="whs2"><b style="font-weight: bold;">Arguments:</b>
Name + Coordinates of origin, X axis direction, Y axis direction.</p>
<p class="whs2">&nbsp;</p>
<p class="whs3"><img src="pics/neo-localcs1.png" x-maintain-ratio="TRUE" width="312px" height="391px" border="0" class="img_whs4"></p>
<p class="whs3">&nbsp;</p>
<p class="whs5">Secondly, you can simply
select a point in the object browser or 3D viewer, in this case the coordinates
of origin are automatically filled in with the coordinates of the selected
point and X and Y axes direction will be parallel to the X and Y direction
of the Global CS. &nbsp;</p>
<p class="whs5"><b style="font-weight: bold;">Arguments:
</b>Name + reference object.</p>
<p class="whs5">&nbsp;</p>
<p class="whs3"><img src="pics/neo-localcs2.png" x-maintain-ratio="TRUE" width="312px" height="289px" border="0" class="img_whs6"></p>
<p class="whs2">&nbsp;</p>
<p class="whs2">The last algorithm also presumes that you select
a point in the object browser or 3D viewer, but in this case you define
X and Y axes direction yourselves. </p>
<p class="whs7"><b>Arguments:</b> <span
style="font-weight: normal;">Name + 1 point of origin + X axis direction,
Y axis direction.</span></p>
<p class="whs2">&nbsp;</p>
<p class="whs3"><img src="pics/neo-localcs3.png" x-maintain-ratio="TRUE" width="312px" height="359px" border="0" class="img_whs8"></p>
<p class="whs2">&nbsp;</p>
<p class="whs2">Press <20>OK<4F> or <20>Apply<6C> button to create an LCS
at the location with the specified coordinates. The new object is shown
in the Object Browser and in 3D viewer.</p>
<p class="whs9">&nbsp;</p>
<p class="whs10">Example:</p>
<p class="whs11"><img src="image145.jpg" width="200px" height="219px" border="0" class="img_whs12"></p>
<p class="whs11">&nbsp;</p>
<p>&nbsp;</p>
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