s="keywordtype">float</span> z1)</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;    {</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;        glBegin(GL_LINES);</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;        glColor4f(1.0f,1.0f,1.0f,0.1f);</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;        glVertex3f(x0, y0, z0); <span class="comment">// from</span></