ZakBlystone

-- Circles and Arcs (CC0 Public Domain, free to use in whatever you want)
-- Created by: Zachary Blystone ( [email protected] )

-- Vertex cache to prevent table allocations during draw operations
local vertCache = {}
for i=1, 256 do vertCache[i] = { x = 0, y = 0, u = 0, v = 0, } end

-- Localized functions
local math_rad = math.rad
local math_pi = math.pi

ZakBlystone

-- Sphere drawing using mesh library (CC0 Public Domain, free to use in whatever you want)
-- Created by: Zachary Blystone ( [email protected] )

-- Localized functions
local mesh_position = mesh.Position
local mesh_normal = mesh.Normal
local mesh_color = mesh.Color
local mesh_userdata = mesh.UserData
local mesh_texcoord = mesh.TexCoord
local mesh_advance = mesh.AdvanceVertex

ZakBlystone

-- SSTV experiment (CC0 Public Domain, free to use in whatever you want)
-- Created by: Zachary Blystone ( [email protected] )

local rate = 44100
local image = {}

local function co()

	local dt = 1 / rate
	local p = 0

ZakBlystone

-- QRCode Library (CC0 Public Domain, free to use in whatever you want)
-- Created by: Zachary Blystone ( [email protected] )
-- Based on https://github.com/nayuki/QR-Code-generator

--[[
    USAGE:

    -- To create a QR code object:
    -- (text)
    -- (ecl, can be LOW, MEDIUM, QUARTILE, or HIGH)

ZakBlystone

-- Color conversion (CC0 Public Domain, free to use in whatever you want)
-- Created by: Zachary Blystone ( [email protected] )

local _min, _max, _abs, _floor = math.min, math.max, math.abs, math.floor
local _permut = {
	function(a,b,c) return a,b,c end,
	function(a,b,c) return b,a,c end,
	function(a,b,c) return c,a,b end,
	function(a,b,c) return c,b,a end,
	function(a,b,c) return b,c,a end,

ZakBlystone

-- "Supertrace" mesh tracing library 
-- (CC0 Public Domain, free to use in whatever you want)

-- Created by: Zachary Blystone ( [email protected] )

--[[
    This library performs a trace against an entity's visual meshes.
    While it is not as optimized as it could be, you won't see
    much of a framedrop on meshes with less than 5,000 triangles.

ZakBlystone

-- FastToScreen (CC0 Public Domain, free to use in whatever you want)
-- Created by: Zachary Blystone ( [email protected] )

-- Localized functions
local __vunpack = FindMetaTable("Vector").Unpack
local __cos = math.cos
local __sin = math.sin
local __min = math.min
local __tan = math.tan
local __abs = math.abs