| These visualizations are available
free of charge for personal and educational uses only. Unless
otherwise noted, all materials are copyrighted to the Center
for Environmental Kinetics Analysis and The Pennsylvania State
University. All rights reserved. Please contact Chuck
Anderson with any questions or problems with the files. |
| |
| Water and Oxygen Diffusion around
a Pyrite Grain |
Animating script for data from a molecular
dynamics simulation of water and oxygen molecules diffusing
around a sub-microscopic pyrite grain (~ 10 x 10 x 10 atoms
in size). The simulation shows molecular vibration (thermal
vibration) as well as diffusion around the pyrite grain (in
this simulation the pyrite grain atoms are held fixed).
Molecular dynamics simulation run by Jim Kubicki, Center
for Environmental Kinetics Analysis, Penn State University
Model data visualized using VTK, an
open source visualization package available at www.vtk.org.
VTK is a powerful yet easy to learn scripting language compatible
with any GeoWall capable of running clone mode stereo. This
script is authored in Tcl/Tk and can readily be modified to
work with other datasets.
Data files and script (4.3MB) |
| |
Periclase (MgO) Crystallization Movies |
Stereo movie files generated from a molecular
dynamics simulation of periclase (MgO) crystallization by Lee
and Kubicki (1993). Model spans 10 ps (10 x 10-12 seconds!)
of real time and shows the phase transition between a supercooled
liquid and crystal at 2500K. The phase transition is marked
by a change from tetrahedral to octahedral Mg coordination.
In the animation, Mg atoms are red-orange and O atoms are green.
Both are set to a radius of .5 Å and
the bond distances are ~ 2 Å. Two crystals with different
orientations form during the movie which is why only part of
the simulation cell has atomic planes aligned with the eye
of the viewer.
The stereo movies are 1280x480 resolution AVI files and look
reasonable when expanded to full screen in QuickTime Player
Pro. Higher image quality and playback performance is possible
by downloading the left & right 640x480 MPEG movie pairs and
viewing them with the free StereoMovie Maker application available
from http://stereo.jpn.org/eng/stvmkr/.
StereoMovie maker will play the movies in stereo using either
horizontal span or clone mode. |
Movies showing
bonds Movies
without bonds
L/R pair (290MB) L/R
pair (178MB)
Stereo movie (159MB) Stereo
Movie(143MB) |
Lee, W.J. and J.D. Kubicki, Molecular Dynamics
Simulation of Periclase Crystallization, Geophysical Research
Letters, Vol. 20, No. 19 2103-2106, 1993 |
| |
Silicate Mineral Models |
Interactive 3D models of common silicate minerals
and the basic SiO structure of silicate mineral classes. Models
displayed in web browser using MDL's Chime plug-in (http://www.mdl.com/products/framework/chime/index.jsp).
To view in stereo, set browser to full screen on a GeoWall
running in horizontal span mode. The file index.html launches
the stereo version with a list of models. Clicking "Basic
Tetrahedral Structures" on
this page leads into a stepwise tour of basic mineral structures
with an example mineral of each. The file web-index.html launches
a non-stereo version that can be used on desktop computers
and non-stereo displays.
Pdb model files used in this package come from The Virtual
Museum of Minerals and Molecules (http://virtual-museum.soils.wisc.edu/displays.html)
and Mineral Web (http://www.minweb.co.uk/).
Mineral Models (400KB) |
| |
Interactive 3D Structural Block Model |
 Interactive 3D structural block model of an open anticline-syncline pair. Model allows user to change the fold axis trend and plunge, strike and dip of the block's top surface, elevation of the top surface and visibility of each model layer. This model is also very effective in non-stereo when viewed on a convention computer, and a non-stereo version of the script is included in the download archive.
This model requires VTK 5.2 or newer. VTK is an open source visualization
package available at www.vtk.org.
VTK is a powerful yet easy to learn scripting language compatible
with any GeoWall capable of running clone mode stereo. This
script is authored in Tcl/Tk and is highly commented to aid in user customization and adaptation to other data sets. The model layers were created in Maya and exported as OBJ format geometry files. New model layers can be made in any 3D modeling program that supports OBJ export.
Important note: This script uses the vtkFillHoleFilter that currently has a bug which prevents data passing through when the input has no hole to fill. The bug is easy to fix in the source code for those who compile their own version of VTK. Instructions for fixing the bug are included in the model download. Also included are versions of the script that work without the bug fix. The performance of these scripts is not as good as those for a patched version of VTK, but they are still very functional. Additional details are in the Read Me file contained in the model download.
Data files and script (520KB) |
| |
Antarctic Ice Growth |
Antarctic ice growth predicted by a 3-D dynamical
ice model, in an idealized simulation of ice growth starting
from an ice-free continent and spanning 800 thousand years.
The ice-sheet model is driven by surface snowfall and melt
calculated by a Global Climate Model, including relatively
fast Milankovitch orbital variations (20,000 to 40,000 year
periods) and a long-term gradual decline of atmospheric CO2
and ocean temperatures. Modeling by David Pollard, Earth and
Environmental Systems Institute.
Model data visualized using VTK, an open source visualization
package available at www.vtk.org.
VTK is a powerful yet easy to learn scripting language compatible
with any GeoWall capable of running clone mode stereo. This
script is authored in Tcl/Tk and can readily be modified to work
with other x,y, elevation data sets.
Data files and script (19MB) |
| |
Lewistown, PA Geologic Map, Topographic
Map and Orthophotography Draped on DEM |
Interactive 3D model of Lewistown, PA quadrangle
topography (DEM) with either the topographic map, geologic
map or high-resolution color orthophotography draped
on topography. User can also display cutaway view of topography
and a cross section view of underlying geologic units. Lewistown
is in the heart of the Appalachian Valley and Ride province
and provides a good example of the relationship between geology
and topography in an old mountain range.
Model data visualized using VTK, an open source visualization
package available at www.vtk.org.
VTK is a powerful yet easy to learn scripting language compatible
with any GeoWall capable of running clone mode stereo. This script is authored in Tcl/Tk and can readily be modified
to work with other DEM data sets and accompanying imagery.
VTK 5.2.0 and newer version: Data files and script (53MB) |
| Legacy VTK 5.0.x version: Data files and script (53MB) |
| |
| |
| GeoWall Tools |
| Modified version of alignment
image with different colored grid on left
and right side |
ArcGrid2VTK Script
to convert ArcGrid format DEMs to VTK files. Script reoders
values to account for VTK starting rasters in lower left instead
of upper left corner. |
| |
| GeoWall Hardware |
| Cart base for mobile GeoWalls |
Filter holders |
