sl_viewer

A simple OpenGL^?-based viewer for streaming lines.

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Example usage:

sl_viewer -i ../data/armadillo40.slb

Reads the streaming lines file and displays it every 5000 lines (after you press 'p') while doing on-the-fly simplification with vertex clustering onto a 1024 x 1024 x 1024 grid.

sl_viewer  -i ../data/armadillo40.slb -every 50

Same as above but displays it every 50 lines.

sl_viewer -i ../data/armadillo40.slb -grid 6 -win 640 480

Same as above, but with a smaller display window, and more agressive on-the-fly simplification of the lines, with vertex clustering on a 63 x 64 x 64 grid.

sl_viewer  -i ../data/armadillo40.slb -ct ../data/armadillo_ct1.slb

Same as above, but also displaying the contour tree that we computed with another streaming technique.

sl_viewer  -i ../data/armadillo40.slb -i ../data/lidar_band10.slb -i ../data/PIE_0015.slb

This allows to display several inputs (usually for comparison). To change files simply press 'x' and hit play 'p' again.

Interactive controls:
p	play/stop
o	stop
space	switch between rotate/translate/zoom
-/=	render vertices smaller/bigger
_/+	render lines thinner/wider
[/]	exaggerate/mellow elevation differences
c	change color mode
b	hide/show bounding box
s/S	step forward/backward
t/T	tiny step forward/backward
r	out-of-core full resolution rendering
k	print kamera parameters to stderr
x	exchange filenamed (if multiple '-i' inputs)
ESC	quit

Also try:

sl_viewer  -i ../data/armadillo40.slb -ct ../data/armadillo_ct1.slb
slclean -i ../data/armadillo40.slb -oslb | sl_viewer.exe -islb
slclean -i ../data/armadillo40.slb -length 3 -oslb | sl_viewer.exe -islb
slclean -i ../data/lidar_band10.slb -length 2 -oslb | sl_viewer.exe -islb
slclean -i ../data/lidar_band10.slb -length 10 -oslb | sl_viewer.exe -islb
slclean -i ../data/lidar_band10.slb -length 10 -oslb | slsimp -islb -area 1 -oslb | sl_viewer.exe -islb

For more info:

sl_viewer -h

Usage:

sl_viewer -i lines.sla
sl_viewer -i lines1.slb -i lines2.slb
sl_viewer -isla < lines.sla
sl_viewer -win 640 480
sl_viewer -grid 9 -every 1000 -isla < lines.sla

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if you find bugs let me (isenburg@cs.unc.edu) know.

(All information copied directly from http://www.cs.unc.edu/~isenburg/googleearth/tools/sl_viewer_README.txt)

-- ChristianStith - 17 Jun 2008
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