FENCE3(3NCARG)

✨ FENCE3 ✨ (the NCARG one, bestie)

okay so real talk — this one lives in the NCAR Graphics manual, and it's giving "3D but make it a picket fence." 💅 Let's get into it.

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🌸 NAME 🌸

FENCE3 — draws the projection of a curve, just like CURVE3 does, except it also slaps a "fence" on it: a bunch of straight line segments, all parallel to one of the three axes, stretching from the curve out to a plane you specify (and that plane is perpendicular to the same axis). iconic behavior honestly 🚧✨

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🎀 SYNOPSIS 🎀

CALL FENCE3 (U,V,W,N,IOREN,BOT)

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🦋 C-BINDING SYNOPSIS 🦋

#include <ncarg/ncargC.h>

void c_fence3 (float *u, float *v, float *w, int n,
int ioren, float bot)

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💖 DESCRIPTION 💖

• U,V,W — input arrays, dimensioned at least N, of type REAL. They hold the U, V, and W coordinates (respectively, obviously 💁) of the points that define the curve whose projection we're about to draw. three arrays, three coordinates, one slay.
• N — an input expression of type INTEGER, aka the number of points defining the curve. the headcount fr fr.
• IOREN — an input expression of type INTEGER, and this is the direction the fence lines get drawn in. the options are:
  1. Parallel to the U axis.
  2. Parallel to the V axis.
  3. Parallel to the W axis.

that's it, that's the list, pick one 🌈

• BOT — an input expression of type REAL that says where the bottom of the fence gets drawn. like, for example: if the fence lines are being drawn parallel to the W-axis, and BOT=2., then the bottom of the fence is the plane W=2. easy.

⚠️ okay so tiny reality check: the word "bottom" might be a liiiiittle misleading here. the entire curve could be below the plane of the "bottom," and the fence could actually be horizontal instead of vertical in three-dimensional space. so like. don't come for the naming. 🙈

The curve and the fence are drawn in the colors implied by the values of the variables ITHRMJ and ITHRMN, respectively, over in the Threed COMMON block:

COMMON /THRINT/ ITHRMJ,ITHRMN,ITHRTX

The default value of both ITHRMJ and ITHRMN is 1; user code may change these values. so if the colors are off, that's on you bestie 💅

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🌈 C-BINDING DESCRIPTION 🌈

The C-binding argument descriptions are the same as the FORTRAN argument descriptions. same energy, different language. periodt. 🫶

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⭐ EXAMPLES ⭐

Use the ncargex command to see the following relevant example: fthex04. go look at it, it's cute, it'll teach you things 🎀

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👑 ACCESS 👑

To use FENCE3 or c_fence3, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c — preferably in that order. order matters, don't test fate 🔥

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💜 SEE ALSO 💜

Online: threed, curve3, frst3, line3, perim3, point3, psym3, pwrz, pwrzt, set3, threed, tick3, tick43, vect3, ncarg_cbind.

Hardcopy: NCAR Graphics Fundamentals, UNIX Version

(yes threed is in there twice, no I'm not deleting it, the manual said it twice and I respect the manual 🧚)

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🍓 COPYRIGHT 🍓

Copyright (C) 1987-2009 University Corporation for Atmospheric Research The use of this Software is governed by a License Agreement.

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and that's the whole page, bestie 💖 this one's from the NCAR Graphics crew, dated March 1993, and it's the UNIX flavor of the manual. go forth and fence responsibly. 💅✨🦋