42 lines
1.3 KiB
Text
42 lines
1.3 KiB
Text
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.TH GALAXY 6
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.SH NAME
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galaxy \- representations of n-body simulations
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.SH DESCRIPTION
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Files of this format are interpreted by
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.IR galaxy (1)
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as describing the inital condition of n-body simulations
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or the saved state of simulation in progress.
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A galaxy file is a UTF stream of instruction lines. The
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instruction is given by the first space delimited word. The
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following instructions are accepted.
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.TP
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.B MKBODY
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The rest of the line must contain 5 white space delimited
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double-precision floating point numbers. They represent a
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body's x coordinate, y coordinate, x velocity component,
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y velocity component, and size respectively.
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.TP
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.B ORIG
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The rest of the line must contain 2 white space delimited
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double-precision floating point numbers. They represent
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the current location of the origin with respect to the
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view window of
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.IR galaxy (1).
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.TP
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.B DT
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The rest of the line must contain a double-precision
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floating point number which determines the time-scale
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of the simulation.
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.TP
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.B SCALE
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The rest of the line must contain a double-precision
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floating point number which determines the scale
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of the view of the simulation.
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.TP
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.B GRAV
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The rest of the line must contain a double-precision
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floating point number which determines the gravitational
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constant of the simulation.
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.SH SEE ALSO
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.IR galaxy (1)
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