updated README to reflect current development steps

README.md

@@ -1,30 +1,36 @@
-
 # PixSpace
 
-A model viewer using projective Virtual Reality (VR)
+A model viewer for projective Virtual Reality (VR). 
 
-It deals with:
+PixSpace is a successor to the VisionSpace software, based on OpenSceneGraph, 
+maintained at the HITLabNZ and the VisionSpaceNG, based on Unity 
+at the Graphics and Interaction Lab. 
 
-- getting tracking data from a VRPN server
+PixSpace deals with:
-- render a composited view allowing for non-linear distortions
+
-- loading 3D files 
+- getting tracking data (position and orientation) from a VRPN server
+- render composited stereo views allowing for non-linear distortions and overlapping screens
+- loading 3D scene files (whatever bevy supports right now, ideally with asset reload on change) 
 - providing a simple way to extend the system with interactions
-
+- allow for RPC access to control scenes and settings 
-Ideas are derived from a software written several years ago called VisionSpace.
 
 # TODO
 
+* [x] custom projection matrices
 * [ ] build a system that updates a cameras frustum (w/ offaxis)
 * [ ] multiple cameras
-* [ ] custom projection matrices (https://bevy-cheatbook.github.io/cookbook/custom-projection.html)
 * [ ] render to texture
 * [ ] VRPN (https://github.com/seichter/vrpn-rs) - sync_client.rs seems to do what we need - issue it is Rust 2018
 
+# Contributions
 
-# Suggestions
+Though, I am mostly writing this software on my own, I often ask for help and fortunately FOSS 
+people will be happy to help
 
 @bevy@mastodon.social suggested the following three examples
 
 https://github.com/bevyengine/bevy/blob/main/examples/3d/two_passes.rs
 https://github.com/bevyengine/bevy/blob/main/examples/3d/split_screen.rs
 https://github.com/bevyengine/bevy/blob/main/examples/3d/render_to_texture.rs
+
+And ria8651 on bevy #rendering Discord channel explained pointed me towards reversed Z frustum