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<title>cone</title>
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<td width="10" height="272" valign="top" bgcolor="#DDDDDD"><p> </p> </td>
<td width="173" valign="top" bgcolor="#DDDDDD"><p class="Normal"><a href="index.html">Home</a></p>
<p class="Normal">If you're new to Python <br />
and VPython: <a href="VisualIntro.html">Introduction</a></p>
<p class="Normal">A VPython <a href="VPython_Intro.pdf" target="_blank">tutorial</a></p>
<p class="Normal"><a href="primitives.html">Pictures</a> of 3D objects</p>
<p class="Normal">Choose a 3D object:</p>
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<option>Choose an object</option>
<option value="cylinder.html">Overview</option>
<option value="arrow.html">arrow</option>
<option value="box.html">box</option>
<option value="cone.html">cone</option>
<option value="convex.html">convex</option>
<option value="curve.html">curve</option>
<option value="cylinder.html">cylinder</option>
<option value="ellipsoid.html">ellipsoid</option>
<option value="faces.html">faces</option>
<option value="frame.html">frame</option>
<option value="helix.html">helix</option>
<option value="label.html">label</option>
<option value="lights.html">lights</option>
<option value="points.html">points</option>
<option value="pyramid.html">pyramid</option>
<option value="ring.html">ring</option>
<option value="sphere.html">sphere</option>
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<td width="77%"><div align="center"><span class="style1 style2"><font color="#0000A0">cone</font></span></div></td>
<td width="23%"><div align="center"><img src="images/cone.jpg" alt="cone" width="131" height="127" /><a href="arrow.html"></a></div></td>
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<div></div>
<div>
<p class="Normal"> <img src="VisualRef-3.gif" alt="cone" align="right" /> The cone object
has a circular cross section and tapers to a point. The following statement
will display a cone with the center of its circular base at (5,2,0), pointing
parallel to the x axis with length 12; the wide end of the cone has radius
1:</p>
<div>
<p class="program"> cone(pos=(5,2,0), axis=(12,0,0),<br />
radius=1)</p>
<p class="Normal"> The cone object has the following attributes and
default values, like those for cylinders: <span class="attribute">pos<font color="#000000"> (0,0,0)</font></span>, <span class="attribute">x</span><span class="attribute"><font color="#000000"> (0)</font></span>, <span class="attribute">y<font color="#000000">(0)</font></span>, <span class="attribute">z<font color="#000000">(0)</font></span>, <span class="attribute">axis<font color="#000000"> (1,0,0)</font></span>, <span class="attribute">length<font color="#000000"> (1)</font></span>, <span class="attribute">color<font color="#000000"> (1,1,1)
which is color.white</font></span>, <span class="attribute">red<font color="#000000"> (1)</font></span>, <span class="attribute">green<font color="#000000"> (1)</font></span>, <span class="attribute">blue<font color="#000000"> (1)</font></span>, <span class="attribute">opacity</span> (1), <a href="materials.html">material</a>,
and <span class="attribute">up<font color="#000000"> (0,1,0)</font></span>.
As with cylinders, <span class="attribute">up</span> has only a
subtle effect on the 3D appearance of a cone unless a non-smooth
material is specified. Additional cone attribute:</p>
<p class="attributes"> <span class="attribute">radius</span> Radius of the
wide end of the cone, default = 1</p>
</div>
</div>
<div>
<p class="Normal">Note that the <span class="attribute">pos</span> attribute
for cylinder, arrow, cone, and pyramid corresponds to one end of the object,
whereas for a box, sphere, or ring it corresponds to the center of the object. </p>
<p class="Normal">See description of <a href="options.html">Additional
Attributes</a> available for all 3D display objects.</p>
</div>
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