Addam Dominec addam

C++, Python, and respect for mathematics.

addam / barrier.js

Last active March 2, 2021 07:56

make sure that outdated web responses are ignored

addam / cesiumWorldPosition.glsl

Created September 8, 2020 13:25

get world coordinates in Cesium

	vec4 world() {
	vec4 ndc = vec4(
	2.0 * (gl_FragCoord.xy - czm_viewport.xy) / czm_viewport.zw - 1.0,
	(czm_readDepth(depthTexture, v_textureCoordinates) - czm_viewportTransformation[3][2]) / czm_viewportTransformation[2][2],
	1.0);
	vec4 eye = czm_inverseProjection * ndc;
	return czm_inverseView * eye;
	}

addam / printer.py

Last active December 11, 2019 08:48

simplify repeated calls to `print(..., file=f)` in Python

	from functools import partial

	class printer:
	def __init__(self, *args):
	self.args = args
	def __enter__(self):
	self.f = open(*self.args)
	return partial(print, file=self.f)
	def __exit__(self, *args):
	self.f.__exit__(*args)

addam / board.py

Created September 14, 2019 09:32

Interactive board using a laser pointer

	#!/usr/bin/python3
	import cv2
	import numpy
	import pyautogui

	# usage:
	# after launch, a shot from the camera appears.
	# mark four corners of the projector by clicking in order: top left, bottom left, bottom right, top right
	# the program moves mouse when it sees the laser pointer on-screen
	# the program never exits (you have to kill it)

addam / dlib_face_tracker.py

Created June 27, 2019 09:30

Quick face tracker using dlib + opencv. Face detector is slow, shape predictor is quick -- therefore they execute in separate threads.

	#!/usr/bin/python3
	import cv2 as cv
	import dlib
	from threading import Thread
	import time

	pose_model = dlib.shape_predictor("/usr/share/dlib/shape_predictor_68_face_landmarks.dat")
	detector = dlib.get_frontal_face_detector()

	def camera(source):

addam / x3d_viewer.html

Created December 4, 2018 14:42

A minimalist x3d viewer (useful for debugging postgis queries)

	<html>
	<head>
	<title>X3D Viewer</title>
	<script type='text/javascript' src='http://www.x3dom.org/download/x3dom.js'> </script>
	<style>
	canvas {
	border: 1px solid gray;
	}
	</style>
	</head>

addam / indent.js

Created November 4, 2018 19:29

Code indent function for <textarea onkeydown="tryIndent(event)">

	function tryIndent(event) {
	if (event.code != "Tab") {
	return;
	}
	event.preventDefault();
	var text = event.target;
	var start = Math.max(text.value.lastIndexOf("\n", text.selectionStart - 1), 0);
	var end = text.selectionEnd;
	var str = text.value.slice(start, end);
	var origLength = str.length;

addam / streambuf.cpp

Created May 31, 2018 20:00

Minimalist std::streambuf subclass for custom reading

	#include <sstream>
	#include <fstream>
	#include <iostream>
	#include <array>

	class Buffer : public std::streambuf {
	// we use ifstream here only for the sake of example
	std::ifstream file;
	std::array<char, 1024> data;

addam / postgres_copy.py

Last active November 7, 2017 20:13

Copy data from a posgre SQL server to another using asyncpg

	#!/usr/bin/python3
	import asyncio
	import asyncpg
	from time import time
	try:
	import uvloop
	asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
	except:
	pass # it will just be slower, no harm done

addam / move_if.hpp

Created September 20, 2017 05:28

C++ move_if: remove elements from a sequence and move them over elsewhere

	template<typename It, typename OutIt, typename UnaryPredicate>
	It move_if(It begin, It end, OutIt dst, UnaryPredicate pred)
	{
	It last = end;
	while (begin != last) {
	if (pred(*begin)) {
	dst++ = std::move(begin);
	std::swap(begin, (--last));
	} else {
	++begin;