Hello,<br><br>I am trying to determine how lighting works in colour scalar mode.<br><br>I have an actor of colour (255,0,0) with ambient lighting set to 0.1 and diffuse lighting set to 0.7<br><br>Without scalars, this actor looks fine, but if I enable scalars giving every cell the same colour (255,0,0) the<br>
diffuse lighting coefficient does not seem to have any affect.<br><br>It is as though VTK locks the diffuse lighting coefficient to 1.0 when scalars are enabled, giving me a brighter<br>looking actor than my original non-scalar coloured one.<br>
<br>This appears to be similar to these unanswered questions:<br><a href="http://www.vtk.org/pipermail/vtkusers/1999-July/050896.html">http://www.vtk.org/pipermail/vtkusers/1999-July/050896.html</a><br><a href="http://www.vtk.org/pipermail/vtkusers/2002-October/063444.html">http://www.vtk.org/pipermail/vtkusers/2002-October/063444.html</a><br>
<br>Any help/explanation greatly appreciated.<br><br>Regards,<br><br>Andrew<br>