Canon wants us to pay for using our own camera as a webcam
931 by romanzipp | 577 comments on Hacker News.
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New best story on Hacker News: Show HN: Tetris in a PDF
Show HN: Tetris in a PDF
976 by ThomasRinsma | 177 comments on Hacker News.
I realized that the PDF engines of modern desktop browsers (PDFium and PDF.js) support JavaScript with enough I/O primitives to make a basic game like Tetris. It was a bit tricky to find a union of features that work in both engines, but in the end it turns out that showing/hiding annotation "fields" works well to make monochrome pixels, and keyboard input can be achieved by typing in a text input box. All in all it's quite janky but a nice reminder of how general purpose PDF scripting can be. The linked PDF is all ASCII so you can just open it in a text editor, or have a look at the source code here: https://ift.tt/wxqidar
976 by ThomasRinsma | 177 comments on Hacker News.
I realized that the PDF engines of modern desktop browsers (PDFium and PDF.js) support JavaScript with enough I/O primitives to make a basic game like Tetris. It was a bit tricky to find a union of features that work in both engines, but in the end it turns out that showing/hiding annotation "fields" works well to make monochrome pixels, and keyboard input can be achieved by typing in a text input box. All in all it's quite janky but a nice reminder of how general purpose PDF scripting can be. The linked PDF is all ASCII so you can just open it in a text editor, or have a look at the source code here: https://ift.tt/wxqidar
New best story on Hacker News: Happy New Year 2025
Happy New Year 2025
695 by martynvandijke | 167 comments on Hacker News.
Hey HN, this site always drags me back to visit it everyday. So for that Happy New year !
695 by martynvandijke | 167 comments on Hacker News.
Hey HN, this site always drags me back to visit it everyday. So for that Happy New year !
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