seungwonpark

% Fourier Series of Square Wave - illustrated and computed by TeX.
% Author : Seungwon Park (swpark.me)
% convert -delay 10 -loop 0 -density 400 -alpha remove square-wave.pdf square-wave.gif
\documentclass[tikz]{standalone}
\usepackage{tikz}
\usetikzlibrary{calc}
\usepackage{amsmath,amssymb}
\usepackage{centernot}
\begin{document}
	\foreach \angle in {0,4,...,360}{

seungwonpark

import numpy as np


# grouping = [[0,3],[1,2]]
# filename = 'hfc_20170614_example.csv'
# grouping = [[x for x in range(200*y, 200*(y+1))] for y in range(10)]

with open('random.csv', 'a') as f2:
	while(1):
		grouping_rand = np.random.permutation(2000)

seungwonpark

% !TeX program = lualatex
\RequirePackage{luatex85}
\documentclass{standalone}
\usepackage{tikz}
\usepackage{luacode}
\usepackage{graphicx}
\definecolor{joired}{RGB}{218,11,49}
\definecolor{joigreen}{RGB}{18,136,104}
\definecolor{joiyellow}{RGB}{250,210,49}
\definecolor{joiblue}{RGB}{15,105,180}

seungwonpark

// ==UserScript==
// @name         CF Hint Hider
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Hide algorithm hint at Codeforces
// @author       Seungwon Park (veydpz)
// @match        http://codeforces.com/problemset
// @grant        none
// ==/UserScript==

seungwonpark

% Author : Seungwon Park (swpark.me)
% convert -delay 2 -loop 0 -density 1000 -alpha remove imyeoni.pdf imyeoni.gif
% emoji: convert -delay 2 -loop 0 -density 120 -alpha remove imyeoni.pdf imyeoni.gif
\documentclass[tikz]{standalone}
\usepackage{tikz}
\usepackage{amsmath,amssymb}
\usepackage{kotex}
\begin{document}
	\foreach \ani in {0,3,...,57}{
		\begin{tikzpicture}

seungwonpark

% taegeukgi.tex
% Taeguekgi(태극기)
% Author: Seungwon Park (swpark.me)
% Date: 2017.11.12
% 국기 그리는 법은 아래의 행정안전부 지침을 따랐습니다.
% http://www.mois.go.kr/frt/sub/a06/b08/nationalIcon_2_2/screen.do
\documentclass{standalone}
\usepackage{tikz}
% CIE color space is replaced with RGB, using colorpicker.
\definecolor{taegeuk-red}{RGB}{199, 32, 50}

seungwonpark

\documentclass{standalone}
\usepackage{tikz}
\usepackage{ifthen}
\usepackage{intcalc}
\begin{document}
	\begin{tikzpicture}
		\draw (6,0) arc [radius=6, start angle=0, end angle=180] -- (-6,-0.5) -- (6,-0.5) -- cycle;
		\foreach \i in {0,10,...,180}{
			\draw[red] (\i:5.2) -- (\i:6);
			\node[red, rotate=-90+\i] at (\i:5) {\i};

seungwonpark

# open.pss.go.kr image crawler
# n=150: 2017-12-28, Conversation with future scientists

import requests
import re
import os
baseurl = 'http://open.pss.go.kr'
for n in range(151):
	# n = 150
	req = requests.get(baseurl + '/picture/view/?no=%d' % n)

seungwonpark

\documentclass{standalone}
\usepackage{tikz}
\def\camtheta{60}
\def\camphi{70}
%\def\p{((3+cos(16*\t))*cos(\t))}
%\def\q{((3+cos(16*\t))*sin(\t))}
%\def\r{sin(16*\t)}
%\def\w{\p*sin(\camtheta)*cos(\camphi) + \q*sin(\camtheta)*sin(\camphi) + \r*cos(\camtheta)}
\def\rot{32} % # of toroid revolution.
\def\dist{20} % distance of camera and origin

seungwonpark

% convert -delay 2 -loop 0 -density 1000 -alpha remove cube.pdf cube.gif
\documentclass[tikz]{standalone}
\usepackage{tikz}
\usepackage{pgffor}
\usetikzlibrary{calc}
\def\sintheta{0.8660254037844386}
\def\costheta{0.5}
\def\sinphi{0.9396926207859083}
\def\cosphi{0.3420201433256688}
\def\cube{1}