This directory stores shape files. Out of the many shape files that can be stored in SHAPEFILES, SPC only uses one shape model at a time, SHAPE.TXT. It is the main shape model used throughout SPC.
The first line of SHAPE.TXT is the Q size (between 8 and 512 in a factor of 2 increments: 8, 16, 32, 64, 128, 256, 512). The shape is in the ICQ format, which is basically a 6-sided cube.
Each subsequent line gives the vector of the surface. Bob has made a new routine (equalize) that helps distribute the vectors evenly. The vectors are in Cartesian space (x, y, z).
Do we need to link to equalize or somehow indicate that that is in progress?
SHAPE00.TXT is the "baseline" shape model. This can be used to keep track of how far the new shape gets do you mean "how different it becomes from"??? from the starting shape. Usually, it is turned off partway through the mission by INIT_LITHOS.TXT.
Use a symbolic link to specify SHAPE.TXT. This way, you can keep a useful filename in the directory, but "link" it to SHAPE.TXT so that SPC runs properly.
Here is a sample set of commands to show how to set up a link:
cd SHAPEFILES ln -s <realfile> SHAPE.TXT
Here is a sample of a shape model:
512 -278.04003 278.04003 268.57872 -276.88948 278.59369 269.11354 -275.73912 279.14388 269.64501 -274.58894 279.69061 270.17314 -273.43898 280.23391 270.69794 -272.28923 280.77377 271.21943 -271.13971 281.31022 271.73763 -269.99043 281.84328 272.25255 -268.84141 282.37296 272.76420 -267.69265 282.89927 273.27260 ...
(Compiled by KD)