added Engine::Object::setTextureScale() for box and plane texture scaling

git-svn-id: svn://anubis/anaglym/trunk@219 99a6e188-d820-4881-8870-2d33a10e2619

doc/index.html

@@ -695,6 +695,17 @@ This function sets the texture of <tt>obj</tt> to <tt>tex</tt>.
 <a href="#ag_loadTexture">ag.loadTexture()</a>.
 </p>
 
+<a name="object_setTextureScale" />
+<h3>setTextureScale</h3>
+<p><tt>obj:setTextureScale(scale)</tt></p>
+<p>
+This function sets the "texture scale" for <tt>obj</tt>.
+Currently, texture scaling is only supported for boxes and planes.
+<tt>scale</tt> actually scales the texture coordinates.
+Hence a scale of 4 would appear to shrink the texture by a factor of
+4 and tile the texture 16 times where it normally would have once.
+</p>
+
 <a name="object_setVisible" />
 <h3>setVisible</h3>
 <p><tt>obj:setVisible(visible_flag)</tt></p>