paulyc

/* GET /tiles/:z/:x/:y.mvt */
/* Retreive a vector tile by tileid */
router.get('/tiles/:z/:x/:y.mvt', async (req, res) => {
  const { z, x, y } = req.params;

  // calculate the bounding polygon for this tile 
  const bbox = mercator.bbox(x, y, z, false);

  // Query the database, using ST_AsMVTGeom() to clip the geometries
  // Wrap the whole query with ST_AsMVT(), which will create a protocol buffer

paulyc

/* GET /tiles/:z/:x/:y.mvt */
/* Retreive a vector tile by tileid */
router.get('/tiles/:z/:x/:y.mvt', async (req, res) => {
  const { z, x, y } = req.params;

  // calculate the bounding polygon for this tile 
  const bbox = mercator.bbox(x, y, z, false);

  // Query the database, using ST_AsMVTGeom() to clip the geometries
  // Wrap the whole query with ST_AsMVT(), which will create a protocol buffer

paulyc

Get the synth wave glow working for VS Code on Mac

These notes are pretty much the same steps as the two extensions list, it's just that I had to collate them together because neither seems to list it fully in the proper order.

1. Install Synthwave ’84/Synthwave + Fluoromachine theme on VS Code (I used the Fluoromachine one)

2. Install Custom CSS and JS Loader

3. Command + Shift + P to open command palette > "Preferences: Open settings (JSON)"

paulyc

Using VAAPI's hardware accelerated video encoding on Linux with Intel's hardware on FFmpeg and libav

Hello, brethren :-)

As it turns out, the current version of FFmpeg (version 3.1 released earlier today) and libav (master branch) supports full H.264 and HEVC encode in VAAPI on supported hardware that works reliably well to be termed "production-ready".

paulyc

This bug was also called moonshine in the beginning
Basically the following bug is present in all bootroms I have looked at:
1. When usb is started to get an image over dfu, dfu registers an interface to handle all the commands and allocates a buffer for input and output
2. if you send data to dfu the setup packet is handled by the main code which then calls out to the interface code
3. the interface code verifies that wLength is shorter than the input output buffer length and if that's the case it updates a pointer passed as an argument with a pointer to the input output buffer
4. it then returns wLength which is the length it wants to recieve into the buffer
5. the usb main code then updates a global var with the length and gets ready to recieve the data packages
6. if a data package is recieved it gets written to the input output buffer via the pointer which was passed as an argument and another global variable is used to keep track of how many bytes were recieved already
7. if all the data was recieved th

paulyc

/*
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 */

#include <arpa/inet.h>
#include <linux/if_packet.h>
#include <stdio.h>

paulyc

Receive GOES-16 and GOES-17 Images with a Raspberry Pi and RTL-SDR dongle

Also see the original Pieter Noordhuis's guide

Hardware

You need:

1. Raspberry Pi Model B (or B+) with a MicroSD Card $35-40
2. An RTL-SDR dongle:

paulyc

#!/bin/sh
#
#  Read-only Root-FS for Raspian
#
#  Modified 2016 by Stefan Bonfert to make it compatible with Raspbian
#  Jessie (vanilla).
#
#  Modified 2015 by Pascal Rosin to work on raspian-ua-netinst with
#  overlayfs integrated in Linux Kernel >= 3.18.
#

paulyc

#!/bin/sh
#
#  Read-only Root-FS for Raspian
#
#  Modified 2016 by Stefan Bonfert to make it compatible with Raspbian
#  Jessie (vanilla).
#
#  Modified 2015 by Pascal Rosin to work on raspian-ua-netinst with
#  overlayfs integrated in Linux Kernel >= 3.18.
#

paulyc

var MoonInfo = function(day, month, year) {

    var n0 = parseInt( "0" );
    var f0 = parseFloat( "0.0" );
    var AG = f0;   // Moon's age
    var DI = f0;   // Moon's distance in earth radii
    var LA = f0;   // Moon's ecliptic latitude
    var LO = f0;   // Moon's ecliptic longitude
    var Phase = " ";
    var Zodiac = " ";