cormullion

# draw pi digits up to Feynman point to give illusion of rounding at 999999

using Luxor

function pidigits(n)
    result = Int[]
    k, a::BigInt, b::BigInt, a1::BigInt, b1::BigInt = 2, 4, 1, 12, 4
    while n > 0
        p, q, k = k * k, 2k + 1, k + 1
        a, b, a1, b1 = a1, b1, p * a + q * a1, p * b + q * b1

cormullion

using Luxor, Colors, Combinatorics, Random

mutable struct Ball
    id::Int
    position::Point
    velocity::Point
    color::Union{NTuple, Colorant, String}
    ballradius::Float64
end

cormullion

using Luxor

function frame(scene, framenumber)
    background("grey5")
    setline(1.2)
    eased = scene.easingfunction(framenumber-scene.framerange.start, 0, 1, scene.framerange.stop-scene.framerange.start)
    eased_n = sin(rescale(eased, (0, 1), (0, 2pi)))
    theta = eased_n/2
    s = rescale(eased, 0, 1, 0.95, .01)
    t = rescale(eased, 0, 1, .01, 0.95)

cormullion

using Luxor

pentagon(pos, radius, ang=0, action=:stroke) = ngon(pos, radius, 5, ang, vertices=true)

function drawmonth(year, month, radius)
    # origin is now in center of pentagon
    @layer begin
        rotate(pi)
        fontsize(18)
        fontface("DINNextLTPro-Black")

cormullion

using Luxor
darker_blue = (0.251, 0.388, 0.847)
darker_purple = (0.584, 0.345, 0.698)
darker_green  = (0.22, 0.596, 0.149)
darker_red  = (0.796, 0.235, 0.2)

@png begin
    w = 256
    background("white")
    origin()

cormullion

using Luxor, DynamicalSystems, Colors

function frame(scene, framenumber, datas)
    background("black")
    # datas contains two datasets
    # each dataset is an array of sarrays of 4 floats
    d1, d2 = datas
    offset = π / 2
    L = 200
    disksize = 15

cormullion

using Luxor

using ODE # I should be using OrdinaryDiff, but that's for another day

function pendulum(t, y)
   Y = [6 * (2 * y[3] - 3 * cos(y[1] - y[2]) * y[4])/(16 - 9 * cos(y[1] - y[2])^2);
        6 * (8 * y[4] - 3 * cos(y[1] - y[2]) * y[3])/(16 - 9 * cos(y[1] - y[2])^2)]
   [Y[1];
    Y[2];
    - (Y[1] * Y[2] * sin(y[1] - y[2]) + 3 * sin(y[1]))/2;

cormullion

using Luxor, Colors, Combinatorics, Random

mutable struct Ball
    id::Int
    position::Point
    velocity::Point
    color::Union{NTuple, Colorant, String}
    ballradius::Float64
end

cormullion

julia> Pkg.status()
37 required packages:
 - AstroLib                      0.1.0
 - Atom                          0.6.1
 - BenchmarkTools                0.0.8
 - Cairo                         0.3.0
 - ColorSchemes                  1.4.0+             master
 - Combinatorics                 0.4.1
 - DataFrames                    0.10.0
 - Documenter                    0.11.1

cormullion

using HTTP, JSON, Query

# get data for the julia channel "UC9IuUwwE2xdjQUT_LMLONoA"
function getrawdata(nextpagetoken, apikey)
    d = HTTP.get("https://www.googleapis.com/youtube/v3/search?key=$(apikey)&channelId=UC9IuUwwE2xdjQUT_LMLONoA&pageToken=$(nextpagetoken)&part=snippet,id&order=date&maxResults=50")
    return d.body
end

jsonpages = [] # store the json pages, 50 records at a time
vidlinks  = []  # to hold the video titles and links