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Small format changes, switch all ihighlight macros to ordinary highlighter mechanisms

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Xevion
2023-11-27 19:30:07 -06:00
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commit dec63c64d5
1 changed files with 8 additions and 9 deletions
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17
src/content/blog/painting-images-with-ipv6.md
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@@ -18,13 +18,12 @@ place a single
pixel on a canvas every 5 minutes.
The difference between [/r/place][place-reddit] and [Place: IPv6][place-v6] is that the latter uses a human-accessible
user interface for
selecting colors and placing pixels, while the other uses IPv6 addresses.
user interface for selecting colors and placing pixels (communicating over HTTP websockets, traditionally), while the other uses IPv6 addresses.
Hold on - you might be thinking, _"Don't you mean a REST API? Or at least an HTTP webserver? Or even a TCP/UDP
socket?"_.
None of that, it's not just a normal server accessible by IPv6 exclusively - it's an IPv6 address range booked
None of that; it's **not** just a normal server accessible over IPv6 exclusively - it's an IPv6 address range booked
specifically for the purpose of receiving R, G, B, X and Y arguments.
## How does it work?
@@ -35,7 +34,7 @@ The arguments are encoded into the IPv6 address, and the service will receive an
> **Note**: The service has since been updated to use a different IPv6 address range, but the concept is the same.
Originally, the IPv6 address was {% ihighlight digdag %}2a06:a003:d040:SXXX:YYY:RR:GG:BB{% endihighlight %} where `XXX`
Originally, the IPv6 address was `2a06:a003:d040:SXXX:YYY:RR:GG:BB` where `XXX`
and `YYY` are the X and Y coordinates, and `RR`, `GG` and `BB` are the R, G and B values of the pixel. By substituting
you arguments into these positions, you can paint a pixel on the canvas. Lastly, the `S` represents the size of the
pixel.
@@ -44,12 +43,12 @@ Only `1` or `2` is accepted, representing a 1x1 or 2x2 pixel.
On top of this, the values are encoded in hexadecimal, so you can use the full range of 0-255 for each color without
worry.
As an example, painting the color {% ihighlight dart %}#008080{% endihighlight %} (teal) at the position `45, 445` would
As an example, painting the color `#008080` (teal) at the position `45, 445` would
be encoded as
{% ihighlight digdag %}2a06:a003:a040:102d:01bd:00:80:80{% endihighlight %}. To help you pick out the X and Y
coordinates, {% ihighlight java %}45{% endihighlight %} is {% ihighlight java %}0x2D{% endihighlight %} in hexadecimal,
and {% ihighlight java %}445{% endihighlight %}
is {% ihighlight java %}0x1BD{% endihighlight %}. The color is simply placing in the last 6 bytes of the address, no
`2a06:a003:a040:102d:01bd:00:80:80`. To help you pick out the X and Y
coordinates, `0x2D` in hexadecimal,
and `445`
is `0x1BD`. The color is simply placing in the last 6 bytes of the address, no
hexadecimal conversion needed.
By now, the basic concept should be clear. You can paint a pixel by sending a `ping` to a specific IPv6 address with the