http://wiki.osgrid.org/index.php?action=history&feed=atom&title=LlAxes2Rot 2026-10-25T11:12:04Z Revision history for this page on the wiki MediaWiki 1.43.11 http://wiki.osgrid.org/index.php?title=LlAxes2Rot&diff=66&oldid=prev 2017-12-30T16:04:39Z

<p><span class="autocomment">Function: rotation llAxes2Rot( vector fwd, vector left, vector up );</span></p> <p><b>New page</b></p><div>==Function: rotation llAxes2Rot( vector fwd, vector left, vector up );==<br /> Returns a rotation that is defined by the 3 coordinate axes &lt;br&gt;<br /> • vector fwd &lt;br&gt; <br /> • vector left &lt;br&gt; <br /> • vector up &lt;br&gt;&lt;br&gt; <br /> <br /> All three vectors must be mutually orthogonal unit vectors.&lt;br&gt;<br /> <br /> &#039;&#039;&#039;Examples&#039;&#039;&#039;<br /> {|border=&quot;1&quot; cellpadding=&quot;5&quot; cellspacing=&quot;0&quot;<br /> |&lt;source lang=&quot;lsl&quot;&gt;<br /> default<br /> {<br /> state_entry()<br /> {<br /> vector i = &lt; 1.0, 0.0, 0.0&gt;;<br /> vector j = &lt; 0.0, 1.0, 0.0&gt;;<br /> vector k = &lt; 0.0, 0.0, 1.0&gt;;<br /> <br /> rotation rot = llAxes2Rot( j, -i, k );<br /> <br /> llSay(0, (string) (llRot2Euler(rot) * RAD_TO_DEG) );<br /> }<br /> }<br /> &lt;/source&gt;<br /> |}<br /> <br /> This script displays: <br /> <br /> {|border=&quot;1&quot; cellpadding=&quot;5&quot; cellspacing=&quot;0&quot;<br /> |&lt;source lang=&quot;lsl&quot;&gt;<br /> Object: &lt;-0.00000, 0.00000, 90.00000&gt;<br /> &lt;/source&gt;<br /> |}<br /> <br /> which shows that (j, -i, k) is obtained by rotating (i, j, k) 90 degrees around z direction. <br /> <br /> &#039;&#039;&#039;Notes&#039;&#039;&#039;<br /> <br /> Technically, only the first two vectors are needed to define this rotation, which can be done by calling: <br /> {|border=&quot;1&quot; cellpadding=&quot;5&quot; cellspacing=&quot;0&quot;<br /> |&lt;source lang=&quot;lsl&quot;&gt;<br /> llAxes2Rot(fwd, left, fwd % left);<br /> &lt;/source&gt;<br /> |}</div>

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