stereo3d is a shell script that renders a single Raster3D input file as a side-by-side stereo pair. The resulting image is placed in file stereo.tiff.
stereo3d [-border] render_input_file.r3d
stereo3d uses the Raster3D utilities label3d, normal3d and render, and the utility programs identify, mogrify, and montage from John Cristy's ImageMagick image processing package. Three intermediate files are produced by normal3d: Additional intermediate files may be produced by label3d. The two views are separately rendered to yield images left.tiff and right.tiff (deleted upon completion), optionally given black borders, and merged to form a single side-by-side stereo pair stereo.tiff.


If the following line would render and display a single image:
	render -tiff single.tiff < input.r3d;  display single.tiff
then the following line would render and display the same scene as a stereo pair instead:
	stereo3d input.r3d; display stereo.tiff
NB: The output image is always called stereo.tiff; there is no provision at present to specify some other name.


By default the left and right images are placed next to each other with no intervening space and no frame around them. The -border option requests a 4 pixel wide black border separating and surrounding the component images.


This script requires TIFF support in render, the unix utility sed, and the ImageMagick image processing package. The three intermediate files listed above are created each time the script is run. Any exiting files named left.tiff, right.tiff, or stereo.tiff will be destroyed. The default version of stereo3d invokes the label3d script so that labels are processed in stereo also. If label3d processing is not configured on your machine you may want to replace the stereo3d script with an alternate version named stereo3d_nolabels in the Raster3D distribution package.


Ethan A Merritt.
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