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diff --git a/sample/trick2022/02-tompng/remarks.markdown b/sample/trick2022/02-tompng/remarks.markdown new file mode 100644 index 0000000000..3b2d3fd84b --- /dev/null +++ b/sample/trick2022/02-tompng/remarks.markdown @@ -0,0 +1,32 @@ +### Remarks + +1. Run it with `ruby entry.rb 8080` + +2. Open "http://localhost:8080" + +3. Click on the screen and interact with it + +I confirmed the following implementations/platforms: + +* Ruby Version + * ruby 3.1.0p0 (2021-12-25 revision fb4df44d16) [x86_64-darwin20] +* Browser + * Chrome(macOS, Android) + * Firefox(macOS) + * Edge(macOS) + +### Description + +This program is an HTTP server that provides a fractal creature playground. +You can see the heartbeat of a mysterious fractal creature. Clicking on the screen will change the shape of the creature. +Surprisingly, this interactive webpage is built without JavaScript. + +### Internals + +Fractal: Iterated function system +Rendering from server: Streaming animated GIF +Sending click event to server: `<input type="image" src="streaming.gif">` with `<form target="invisible_iframe">` + +### Limitations + +Does not work on Safari and iOS. |