WxNviz

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Accepted Google Summer of Code 2008 project

• http://lists.osgeo.org/pipermail/grass-dev/2008-February/035792.html

Roadmap / Progress

Done

• Initial cleaning underlying GRASS OpenGL gsurf OGSF Library
  • Doxygenization, code documentation
  • Eliminate fprintf(), changed to G_*_message(), G_warning(), G_fatal_error(), and G_debug()

wxGUI Nviz extension

• Integration with Layer Manager, (un)loading data when map layer is (un)/checked
• Integration with Map Display, auto-rendering functional
• View settings (position, height, perspective, twist, z-exag), perspective can be changed by mouse wheel
• Surface settings (attributes, draw mode)
• Vector 2D/3D points and lines (including boundaries, areas, faces, volumes)
• Saving layer properties in workspace file

What should work:

• Start GRASS with NC dataset
• Add raster map "elevation" and vector map "roadsmajor"
• Start Nviz from Map display toolbar
• Change view, surface attributes, draw mode (try also auto-rendering)
• Enable/disable data layer from Layer Manager

In progress

• Update OGSF Library documentation
• Experimental prototype of CLI version of NVIZ (just very simple functionality)

http://trac.osgeo.org/grass/browser/grass/trunk/visualization/nviz2/cmd

• Design experimental nvizlib used by CLI and wxPython NVIZ prototype

http://trac.osgeo.org/grass/browser/grass/trunk/lib/nviz

• Experimental prototype of NVIZ toolbox for wxGUI (based on NVIZ CLI functionality)

http://trac.osgeo.org/grass/browser/grass/trunk/gui/wxpython/nviz

http://trac.osgeo.org/grass/browser/grass/trunk/gui/wxpython/gui_modules/nviz.py

wxGUI Nviz extension

• Support for volumes

Nviz CLI

• To be updated (based on wxGUI Nviz functionality)

Screenshots

Alpha prototype

2008-06-27: Display raster map from layer tree in 2.5D (surface)	2008-07-05: Support for vector data (2D lines) added
2008-07-26: Support for vector point data	2008-08-02: 3D vector data support
2008-08-09: Initial support for volumetric data

Ideas

• Fog support (see [1], [2], [3])

Google SoC Reports

1. 2008-06-06
2. 2008-06-13
3. 2008-06-20
4. 2008-06-27
5. 2008-07-04
6. 2008-07-11
7. 2008-07-18
8. 2008-07-25
9. 2008-08-01
10. 2008-08-08
11. 2008-08-15

Final reports

• Changes in OGSF library, relevant diffs:
  • [4]
  • [5]
  • [6]
  • [7]