Thursday, March 3, 2022

Show HN: Creodocs, a document creation platform based on LaTeX templates https://ift.tt/8hl4ZfF

Show HN: Creodocs, a document creation platform based on LaTeX templates https://creodocs.com March 3, 2022 at 02:35AM

Show HN: A 1980s-arcade-style invaders game made with HTML5, Canvas, Web Audio https://ift.tt/RknzXuv

Show HN: A 1980s-arcade-style invaders game made with HTML5, Canvas, Web Audio https://ift.tt/blRQKfX March 3, 2022 at 02:22AM

More 20 MPH Streets Coming Soon Near You

More 20 MPH Streets Coming Soon Near You
By Christine Osorio

Last October when California Assembly Bill 43 (Friedman) was signed into law, we posted a blog about which gave cities new flexibility in setting speed limits—specifically reducing them. “Speed Management,” a reference that is still in development, focused on reducing speed limits in key business activity districts where at least 50% are dining or retail. Since the bill went into effect last month, we’ve already started lowering speed limits by 5 MPH (from 25 MPH to 20 MPH) in the first phase of approved corridors, four of which have been implemented: 

  • San Bruno Avenue, from Silver to Paul avenues (Completed January 2022) 

  • Polk Street, from Filbert to Sutter streets (Completed January 2022) 

  • Haight Street, from Stanyan Street to Central Avenue and from Webster to Steiner streets (Completed February 2022) 

  • 24th Street, from Diamond to Chattanooga streets and from Valencia Street to San Bruno Avenue (Completed February 2022) 

The remaining corridors of this phase scheduled to completed through April 2022 are scheduled as follows: 

  • Fillmore Street, from Chestnut to Union streets and from Jackson to McAllister streets (Scheduled March 2022) 

  • Valencia Street, from Cesar Chavez to Market streets (Scheduled March 2022) 

  • Ocean Avenue, from Geneva Avenue to Victoria Street and from Junipero Serra Boulevard to 19th Avenue (Scheduled April 2022) 

An articulated coach approaching a new 20 mph speed limit sign at the intersection of San Bruno and Wayland Ave.

Phase 2 proposes an additional 35 business activity districts and corridors and will go to the MTA Board for legislation this spring with a goal to begin installation in Summer 2022. Additional locations in Phase 3 will be proposed later this year. Check out the updated map below for more information. 

Map of Business Activity District Streets showing the three phases

Speeding Kills – Just 5 miles over the limit is twice as likely to kill. 

Because speeding is the leading cause of traffic deaths and severe injuries in San Francisco, slowing speeds is the single most effective tool for achieving Vision Zero, the citywide commitment to ending traffic deaths. This current speed reduction work builds off other SFMTA programs to create safer streets and encourage slower streets such as the first neighborhood-wide 20 MPH speed limit changes in the Tenderloin or reducing speeds on Market Street to 20 MPH. Through this collective speed management work, 75 miles of streets across the city will have 20 MPH speed limits. Over 50% of these streets are on the High Injury Network – the 13% of streets where more than 75% of severe and fatal crashes occur.   Find more information on the Speed Management project page.  

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Vision Zero (www.visionzerosf.org) – Vision Zero is the City’s commitment to prioritizing street safety and ending traffic deaths. These deaths and injuries are unacceptable and preventable, and San Francisco is committed to stopping further loss of life. The full program is outlined in the Vision Zero SF Action Strategy



Published March 03, 2022 at 02:38AM
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Show HN: Sending Email from Cloudflare Workers for free https://ift.tt/aiRg3V9

Show HN: Sending Email from Cloudflare Workers for free https://ift.tt/TDf4BJc March 3, 2022 at 02:27AM

Show HN: WAPM – WebAssembly Package Manager https://ift.tt/N4LsAyU

Show HN: WAPM – WebAssembly Package Manager Hi HN! I’m Syrus, from the Wasmer team. We just released the new version of WAPM that is an order of magnitude better than the previous one (that we also announced here in HN two years ago! [0]), enabling an incredible experience for using and publishing WebAssembly packages. The tech stack that we are using includes: * Python and Django (for the backend) with Graphene (for the open GraphQL API [1]) and Django Channels with websockets over GraphQL [2] for subscriptions * Next.js [3] with React-Relay [4] and Tailwind.css [5] for the frontend * WebAssembly and Wasmer [6] (for the online shell) Vercel for serving the frontend and GCP for serving the backend. Please let me know if you have any questions, I’d be very happy to answer them! https://wapm.io/ March 3, 2022 at 12:52AM

Show HN: I made a WebGL-based app that traces images using circles https://ift.tt/joJLwN7

Show HN: I made a WebGL-based app that traces images using circles I was fascinated by this [0] and this video [1]. After many struggles, I finally built this app that traces images using circles similar to what these videos had shown. The most challenging part (to me) is to find a way to convert images to vector lines. I had tried Potrace, but its output is not suitable for my use case: too many small elements share the same border. Potrace's goal is to represent the original image faithfully using vector lines. But I want to trace the image edges. After searching and trying some Potrace alternatives in vain, I finally found my keyword. Surprisingly (to me), it lies at the end of the wiki page of the very topic [2]. Then I found a paper [3] that has nice pseudocode and a C implementation. I rewrote the pseudocode in Rust because I wanted to experiment with rustwasm. Honestly, I didn't care much about the math behind it. From then, I could continue to finish the app and show it to the world. This app is also my chance to learn about rustwasm and WebGL. FYI: this app is offline-only; your images never leave your browser [0] https://www.youtube.com/watch?v=r6sGWTCMz2k [1] https://www.youtube.com/watch?v=-qgreAUpPwM [2] https://ift.tt/Pro6wkp [3] https://ift.tt/qeYthsw https://ift.tt/ugedaB4 March 2, 2022 at 11:26PM

Wednesday, March 2, 2022

Show HN: Do You Know RGB? https://ift.tt/t8kUpbO

Show HN: Do You Know RGB? https://ift.tt/OWhvmMT June 24, 2025 at 01:49PM