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COMB_STD(nged)

NAME

comb_std, c - create or modify a combination using standard Boolean notation

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SYNOPSIS

comb_std comb_name [op1 object1 [op2 object2 ...]]
c comb_name [op1 object1 [op2 object2 ...]]

DESCRIPTION

The comb_std command (also available as c) creates or modifies a combination using standard Boolean operators. The combination comb_name is created if it does not exist; if it does exist, the new members are appended to it.

Each member is specified as an operator-object pair:

  • u or + — union

  • - — subtraction

  • ` — intersection (use ` only in contexts where it is unambiguous)

Members are listed in order: the first operator applies between the combination and the first object; subsequent operators apply between successive objects.

The comb_std command (alias c) is a simplified alternative to comb that uses infix Boolean expression parsing similar to traditional MGED syntax.

EXAMPLES

Example 1. Create a combination with union and subtraction

mged> c vehicle.c u hull.r u engine.r - hole.r

Creates vehicle.c with hull.r and engine.r unioned, then hole.r subtracted.

Example 2. Use the c alias

mged> c plate.c u top.s u bottom.s

Creates plate.c as the union of top.s and bottom.s using the short alias.

SEE ALSO

comb(nged), group(nged), region(nged)

AUTHOR

BRL-CAD Team

BUG REPORTS

Reports of bugs or problems should be submitted via electronic mail to devs@brlcad.org