Figure 1. Screen capture from the 40 MB file set at a viewpoint, zoomed in on, and lightened in Adobe Photoshop (trademark, Adobe). Link to VR file: requires Cosmo Player plug in to browser (IE or Netscape 4.x) or Cortona from Parallel Graphics (free download).
Figure 2. Screen capture from the 8 MB file set at a viewpoint, zoomed in on, and lightened in Adobe Photoshop (trademark Adobe). Link to VR file: requires Cosmo Player plug in to browser (IE or Netscape 4.x) or Cortona from Parallel Graphics. This linked file is also shown embedded in the html, below.
Figure 3. Edited file. Try looking at the model from different viewpoints or navigate, on your own, using the control panel.
Still, the application is big and runs slowly (low frame rate) if the
most advanced graphics board is not available. The culprit is the artifacts
file. The artifacts (trees, lamps, benches) are over-defined (too many
polygons). Also, exhaustive field checking is a recommended future
step to remove any error in detail in the scene as compared to reality.
The appendix to this document, made from notes, shows the modifications
made to the files.
Removed option for low-res and high-res textures, using only med-res
This eliminates all jpg files for high and low res.
Changed all file types to lower case (e.g. WRL -> wrl)
Removed all instances of Lamp (43 lamps) from artifacts.wrl
Created Inline file for lamp: LAMPUS.wrl
Created prototype MyLamp using Inline file
This reduced the size of artifacts.wrl
Same for 46 trees
Same for 7 benches
Removed all TimeSensors connected to trees (no need)
Modified many instances of "solid FALSE" to "solid TRUE"
Removed invalid color in Lamp
Removed reference to non-existing texture REKKANIG.BMP
Cleaned up ROUTING and Script
Set "collision FALSE" for all artifact.wrl objects
Improved navigation, added useful viewpoints
Professor Beier, Ph.D., is Director of the 3D Laboratory of The University of Michigan Media Union