python-visual 1:5.12-1.6build1 / usr / share / doc / python-visual / html / sphere.html

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<!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"><!-- InstanceBegin template="/visual/Templates/template.dwt" codeOutsideHTMLIsLocked="false" -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- InstanceBeginEditable name="doctitle" -->
<title>sphere</title>
<!-- InstanceEndEditable -->
<!-- InstanceBeginEditable name="head" -->
<link href="VisualRef.css" rel="stylesheet" type="text/css" />
<style type="text/css">
<!--
.style1 {font-size: x-large}
.style2 {font-size: xx-large}
-->
</style>
<!-- InstanceEndEditable -->
<script type="text/javascript">
<!--
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
//-->
</script>
<link href="VisualRef.css" rel="stylesheet" type="text/css" />
</head>

<body>
<table width="800" border="0" cellpadding="0" cellspacing="0">
  <!--DWLayoutDefaultTable-->
  <tr>
    <td width="10" valign="top" bgcolor="#FFFFFF"><!--DWLayoutEmptyCell-->&nbsp;</td>
    <td width="10" height="272" valign="top" bgcolor="#DDDDDD"><p>&nbsp;</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>
        <select name="jumpMenu4" id="jumpMenu4" onchange="MM_jumpMenu('parent',this,0)">
          <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>
        </select>
        
      <p class="Normal">Work with 3D objects:</p>
        <select name="jumpMenu4" id="jumpMenu5" onchange="MM_jumpMenu('parent',this,0)">
          <option>Choose an option</option>
          <option value="color.html">Color &amp; Opacity</option>
          <option value="lights.html">Lighting</option>
          <option value="materials.html">Materials &amp; Textures</option>
          <option value="defaults.html">Defaults</option>
          <option value="rate.html">Animation Speed</option>
          <option value="rotation.html">Rotations</option>
          <option value="options.html">Additional Options</option>
          <option value="delete.html">Delete an Object</option>
          <option value="float.html">3/4 = 0?</option>
        </select>
        
      <p class="Normal">Windows, Events, &amp; Files:</p>
        <select name="jumpMenu4" id="jumpMenu6" onchange="MM_jumpMenu('parent',this,0)">
          <option>Choose a topic</option>
          <option value="display.html">Windows</option>
          <option value="lights.html">Lighting</option>
          <option value="mouse.html">Mouse Events</option>
          <option value="mouse_click.html">&nbsp;&nbsp;&nbsp;Mouse Click</option>
          <option value="mouse_drag.html">&nbsp;&nbsp;&nbsp;Mouse Drag</option>
          <option value="keyboard.html">Keyboard Events</option>
          <option value="controls.html">Buttons and Sliders</option>
          <option value="files.html">Reading/Writing Files</option>
        </select>
        
      <p class="Normal"><a href="vector.html">Vector operations </a></p>
      <p class="Normal"><a href="graph.html">Graphs</a></p>
    <p class="Normal"><a href="factorial.html">factorial/combin</a></p>
    <p class="Normal">What's new in <a href="new_features.html">Visual 5</a></p>
    <p class="Normal"><a href="http://vpython.org" target="_blank">VPython web site</a><br />
      <a href="license.txt" target="_blank">Visual license</a><br />
      <a href="http://www.python.org" target="_blank">Python web site</a> <br />
      <a href="http://www.python.org/doc/2.5.2/lib/module-math.html" target="_blank">Math module</a> (sqrt etc.)<br />
    <a href="http://www.scipy.org/Documentation" target="_blank">Numpy module</a> (arrays)    </p></td>
    <td width="21" valign="top" bgcolor="#FFFFFF"><!--DWLayoutEmptyCell-->&nbsp;</td>
    <td width="586" rowspan="2" valign="top"><!-- InstanceBeginEditable name="content" -->

        <table width="100%" border="1">
          <tr>
            <td width="77%"><div align="center"><span class="style1 style2"><font color="#0000A0">sphere</font></span></div></td>
            <td width="23%"><div align="center"><img src="images/sphere.jpg" alt="sphere" width="131" height="127" /><a href="arrow.html"></a></div></td>
          </tr>
        </table>
        <p class="Normal"> <img src="VisualRef-4.gif" alt="sphere" align="right" /> Here is an example of how to make a sphere:</p>

          <p class="program"> ball = sphere(pos=(1,2,1), radius=0.5)</p>
          <p class="Normal"> This produces a sphere centered at location (1,2,1) with radius = 0.5, with the current foreground color.</p>
          <p class="Normal"> The sphere object has the following attributes and
            default  values, like those for cylinders except that there is no
            length attribute: <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">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> and <span class="attribute">axis</span> attributes
             affect the orientation of the sphere but have only a  subtle effect
             on appearance unless a non-smooth material is specified. The magnitude
             of the axis attribute is irrelevant. Additional sphere attributes:</p>
          <p class="attributes"> <span class="attribute">radius</span> Radius of the 
            sphere, default = 1</p>
          <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 sphere 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>
    <!-- InstanceEndEditable --></td>
  </tr>
  <tr>
    <td height="16" colspan="4"></td>
  </tr>
</table>
</body>
<!-- InstanceEnd --></html>

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