I'm having this same problem and looking for a solution. When I
render a large image with a vtkTextActor for a title, and a
vtkScalarBarActor for a legend, the title text and ScalarBar wind up
repeated in every tile. Is there any (simple, built-in) solution
for this that is suitable for 2D overlaid elements?<br><br><div><span class="gmail_quote">On Apr 4, 2005 12:44 PM, <b class="gmail_sendername">Kent Eschenberg</b> <<a href="mailto:eschenbe@psc.edu">eschenbe@psc.edu</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> "--On 4/4/05 10:57:27 AM <<a href="mailto:andrew@artwork.com">andrew@artwork.com</a>> wrote:<br>> David,<br>> Thanks for your response. Bear with me, but I do not<br>> understan this part of your response:<br>>>Try using a vtkImageActor to display the output of a<br>>> jpeg reader as an element of a 3D scene.<br><br>If I may jump in ... 3D objects pass through the OpenGL projection matrix<br>which can be used to easily change the scale and offset of the 3D scene.<br>vtkRenderLargeImage uses this to build up the large image.<br><br>2D objects go around this matrix and are displayed more or less directly.<br>This adds a little speed and provides a nice one-to-one relationship<br>between 2D object pixels and display pixels. I supose vtkRenderLargeImage<br>could have been written to also deal with 2D objects -- but it wasn't.<br><br>David's suggestion moves your 2D objects over to the 3D world where they<br>will be scaled and offset along with the other 3D objects. You might see a<br>tiny difference at the pixel level of detail.<br><br>Kent<br><br>_______________________________________________<br>This is the private VTK discussion list.<br>Please keep messages on-topic. Check the FAQ at: <a href="http://www.vtk.org/Wiki/VTK_FAQ">http://www.vtk.org/Wiki/VTK_FAQ</a><br>Follow this link to subscribe/unsubscribe:<br><a href="http://www.vtk.org/mailman/listinfo/vtkusers">http://www.vtk.org/mailman/listinfo/vtkusers</a><br></blockquote></div><br><br><br>-- <br>Randall Hand<br><a href="http://www.yeraze.com">http://www.yeraze.com</a>