A movie that embeds the shadow animation of 'Bad Apple!!' into the font has appeared



A derivative movie '

[Touhou] Bad Apple!! PV ' based on the song ' Bad Apple!! ' included in the 4th Touhou Project 'Touhou Gensokyo ~ Lotus Land Story.' by Shanghai Alice Genrakudan. 'Shadow Picture ' has been viewed more than 35 million times at the time of writing. A video has been released in which engineer Valdemar Elk attempts to incorporate the animation of '[Touhou] Bad Apple!! PV [Shadow Picture]' into a font.

BadAppleFont :: Oxidizing corner
https://blog.erk.dev/posts/anifont/




Bad Apple embedded into a font - YouTube


Mr. Elk said, ``A friend of mine told me on the online bulletin board site Reddit that he was trying to recreate the Bad Apple!! animation, and he said, ``Maybe it's possible to embed Bad Apple!! into a font.'' ”, he said.

In order to embed the Bad Apple!! animation into the font, Mr. Elk used a feature added in July 2023 to a text layout engine tool called HarfBuzz that allows you to use WebAssembly for text shaping rules. did.

As a first step in embedding the animation into the font, Elk captured every frame in the animation in Scalable Vector Graphics (SVG) format. By converting the frame to an SVG file, it will be possible to place it in the font.

Next, Mr. Elk created a script that changed the name of each frame to the Unicode character of his choice in order to incorporate the frames into the font. I imported the SVG file into the font while referring to various sites .



Mr. Elk also created code to move the embedded SVG file and shaped it. Also, since the original '[Touhou] Bad Apple!! PV [Shadow Picture]' is a 30fps video, Mr. Elk used

the xset command to set the character repetition frequency to 30Hz.

As a result of recording using the image editing software GIMP and the recording software OBS, the Bad Apple!! video embedded in the font was created. According to Mr. Elk, it is based on a font called ' Pfennig '.

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