The RenderMan RIB exporter writes out what I hope is a fully compliant RIB Entity file, described in the RenderMac spec as a "3D clip-art" file. It doesn't contain any frame or world information, just the terrain Entity. The terrain is centred around the origin.

The Interface

Mac version	Windows version

The RIB exporter is easy to use. Here's a guide to it's settings :

• Units radio buttons
  These two radio buttons let you choose between using Metres or TG Units for dimensions. As an example, say you are exporting a 257 x 257 terrain with a point spacing of 30m. If you choose TG Units the exported terrain will be 256 x 256 units square, and each quad in the terrain will be 1 unit square. If you choose metres, the terrain will be 7680 metres ( or units ) square and each quad will be 30 metres ( units ) square.
  

• Primitive Type settings
  The RIB exporter allows to export the terrain as two different primitive types.
  • PointsPolygons
    This option exports the terrain using the PointsPolygons primitive, so it's basically a faceted mesh. This is the most efficient option, it generates the smallest file, and is the quickest to write out.
    

  • Individual polygons
    This option exports the terrain as individual Polygon primitives. This option generates much bigger files, and takes longer to write out.
    

• Orientation settings
  The RIB exporter allows you to choose the coordinate system the file will be written out with, as well as whether the Y or Z axis is up.
  • Left handed
    This option writes the file out using a left handed coordinate system, and polygons/faces use a clockwise winding.
    

  • Right handed
    This option writes the file out using a right handed coordinate system, and polygons/faces use a counterclockwise winding.
    

  • Swap Y and Z axes
    This setting allows you to choose whether the Y or Z axis is up. When the this setting is checked, the Y and Z axes are swapped so that the Y axis is up.
    

• Use object name
  This setting allows you to choose whether or not the terrain object has a name. When this is checked, the edit field underneath becomes active so that you can enter an object name, which will be included when the file is written out.
  

• Cancel button
  This button closes the plugin window without recording the changes you've made to the settings.
  

• OK button
  This button closes the plugin window, records the changes you've made to the settings and brings up an Save File dialog box.
  

Requirements

For Export Only needs the TGPGuiLib to run. This file provides cross platform interface functionality. To find out more about the TGPGuiLib and download the latest version, visit it's website.

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© Jo Meder 2001, all rights reserved