SItoA includes a graphic sequencer, called SITOA_Viewer, allowing you to preview the content of the procedural (also called standin) nodes. From any window, set the display mode to Realtime Shaders -> SITOA_Viewer.


The viewer loads all the procedurals in the scene (both archive-types and compiled so/dll) and draws them in ogl, in either wireframe, points, or bounding box mode.

The viewer draws all the polymesh, curves, points and sphere nodes and their ginstances generated by the procedural.

Points and sphere nodes (from ICE or simulation software like Naiad) are always drawn as points. There are two ways you can set the parameters of the viewer:

  1. Globally: by the SITOA_Viewer property created at the scene root level when you open select the viewer.
  2. Locally, per-standin: in the SITOA_Viewer property, turn Use Per-Standin Parameters on. This means that each standin object will drive the way its nodes are drawn, depending on the parameters exposed in the standin property.


Note that scenes saved with a previous version of the standin property default to the global mode.


You can select the way the rest of the scene is displayed (Scene View) if to use a static color or a random one for each object, and the Size for lines and points. When in points mode, the Points Display % parameter defines the percentage (in the 0..1 range) of points that are actually drawn.


If Refresh On Frame Change is on, the procedurals are reloaded on a frame change. This is handy to preview sequences, but it can be slow with large amounts of data. Also, the graphic sequencer is not very fast itself, so our advice is to use the box mode if you need to move the camera around.


Note that you can also use the viewer to display a whole ass file generated from a scene. You can simply pick a cube, apply the standin property and select the scene ass file as its Path.

From SItoA 2.3 onward, an additional parameter, Use .asstoc (if available) is provided.


If enabled, and if a standin path is of type .ass or .ass.gz, and if the corresponding .asstoc file is available, then the standin is always drawn as a box, whose boundaries are the ones listed in the .asstoc file.

This option is only available for the viewer, and not for each individual standin property.

Note that if this control is enabled, but a standin does not have an .asstoc buddy, then it is drawn as before, i.e., according to the Mode of the viewer or of the standin property, depending on Use Per-Standin Parameters.