CC(nged)

💅 CC(nged) — create a new constraint object, bestie ✨

okay so this is the cc command from BRL-CAD User Commands (the nged family 🎀), and honestly? she's a tiny little queen with a very specific job. let's get into it 🦋

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🌸 NAME 🌸

cc — creates a brand-new constraint object in the database. that's it, that's the whole vibe 💖

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✨ SYNOPSIS ✨

cc name constraint_expression

like, both args. both. no skipping 🙈

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💜 DESCRIPTION 💜

so the cc command (short for create constraint, iykyk) creates a new constraint object named name in the database, and it stores constraint_expression as that object's parametric expression. constraint objects are non-geometry database objects of type ID_CONSTRAINT. not geometry, just vibes and math 🧚

Exactly two arguments are required, fr fr: the name for the new constraint object, and the constraint expression string. that's a hard two, not a "two-ish."

the command fails if either name or constraint_expression already exists as an object name in the database — both get checked against existing object names before creation even proceeds. so like, no duplicates, the database said no 💀

on success, the message Constraint saved is printed. slay ✨

the constraint expression is stored within the new object, and you can later retrieve or evaluate it using the constraint command 👑

🫶 Note: cc requires a writable (non-read-only) database, and it requires the database to be open. no open database, no constraint, sorry bestie 😭

🫶 Note: cc is a low-level object creator. if you want the full constraint management interface — including setting attributes on existing constraint objects, querying, displaying, and evaluating — use the constraint command instead. she's the main character, cc is just the intern 💅

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🎀 EXAMPLES 🎀

Example 1. Create a constraint object with a formula expression

mged> cc p0 "formula ell.R[0]=10.0"

this creates a new constraint object named p0 storing the expression formula ell.R[0]=10.0. it fails if either p0 or formula ell.R[0]=10.0 already exists as an object name. both checks, every time, no cap 🔥

Example 2. Create a geometric constraint

mged> cc c1 "coincident ell.V arb8.P[4]"

this creates a new constraint object c1 with a coincident point constraint expression. geometry constraint era 🌈

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🦋 SEE ALSO 🦋

• constraint(nged) — the full-featured one, go hang out with her too 💖

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👑 AUTHOR 👑

BRL-CAD Team — icons only, literally ⭐

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💀 BUG REPORTS 💀

reports of bugs or problems should be submitted via electronic mail to devs@brlcad.org. tell them everything, they wanna know 🫶

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and that's the whole page, bestie!! 🌸 this was CC(nged) from the BRL-CAD User Commands manual, BRL-CAD version vibes, dated the BRL-CAD way — mwah, go make some constraints, ily 💜✨🎀