ctl
procedural-gl-js
ctl | procedural-gl-js | |
---|---|---|
22 | 11 | |
162 | 1,266 | |
- | - | |
5.9 | 0.0 | |
about 2 months ago | almost 3 years ago | |
C | JavaScript | |
MIT License | Mozilla Public License 2.0 |
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ctl
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A header-only C implementation of C++ <algorithm>
Well, I do like mine better, which is closer to the STL, and for all containers. https://github.com/rurban/ctl/
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A simple hash table in C
search for htable or hashtable in thousands of open source projects. only a minority has worse hashtables than this one (clisp, perl5 e.g.).
For better ones I would point to my linked list implementation: https://github.com/rurban/ctl/blob/master/ctl/unordered_set.... (because it has various security policies, nobody else has)
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Popular Data Structure Libraries in C ?
C Container Template Library, Rurban Variant (CTL) - The page for unordered_map reads "Implementation in work still".
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C Template Library
There is also the rurban variant variant of CTL which is more complete.
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Better C Generics: The Extendible _Generic
The prototype of CC used this mechanism to provide a generic API for types instantiated via templates (so basically like other container libraries, but with an extendible-_Generic-based API laid over the top of the generated types). This approach has some significant advantages over the approach CC now uses, but I got a bit obsessed with eliminating the need to manually instantiate templates.
- C_dictionary: A simple dynamically typed and sized hashmap in C - feedback welcome
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How different is C++ from C? Contrasting simple Unix SORT programs
But the most common that I know of is this one: https://github.com/tylov/STC. There's also this one mentioned above https://rurban.github.io/ctl/
- C++ containers but in C
- STL in C
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On HASH-TABLEs performance
I'm also working on a proper one, but got sidetracked. https://github.com/rurban/ctl/blob/hmap/ctl/swisstable.h
procedural-gl-js
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Recreating Real-World Terrain with React, Three.js and WebGL Shaders
Nice writeup, I always like it when the shaders are highlighted like this. I got started in a similar way 7 years ago and have been making 3D terrains with THREE.js & WebGL since.
The real fun begins when you need to implement some sort of Level-of-Detail system and streaming in data to give the illusion of high detail everywhere without sacrificing performance.
Last year I released an open-source framework (https://github.com/felixpalmer/procedural-gl-js) for creating 3D terrains for web applications, you can see Uluru here: https://www.procedural.eu/map/?longitude=131.036&latitude=-2... (unfortunately the aerial imagery from our default provider isn't as high resolution as other places in Europe)
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Visualization of 40M Cell Towers
Great visualization and approach with compressing the tile data. Do you have a comparison of how much smaller the payload ends up being compared to simply sending PNG files?
I use PNGs to encode elevation data in my 3D mapping library (https://github.com/felixpalmer/procedural-gl-js/) and this does a pretty good job of compressing the data, for example in the ocean the PNG files are also very small as the image is mostly black. Different use case I now as your data is much more sparse, but I wonder how close the PNG compression would be compared to your approach.
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React Component for 3D Maps
Yeah, the React parts of this are very minimal. I'm not really sure what using it gets you, since it just manages a single div.
The _actual_ library that does all the work is here: https://github.com/felixpalmer/procedural-gl-js
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Ask HN: What Are You Working On?
- Tiny filesize means library is parsed fast. Package size is less than THREE.js thanks to code stripping
Check it out on Github: https://github.com/felixpalmer/procedural-gl-js/
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Mountain Peaks in WebGL
The imagery comes from the Orthofoto dataset on https://www.basemap.at/ - the actual texturing is done by the Procedural GL JS library https://github.com/felixpalmer/procedural-gl-js
What are some alternatives?
rnnoise - Recurrent neural network for audio noise reduction
maplibre-gl-js - MapLibre GL JS - Interactive vector tile maps in WebGL2
Klib - A standalone and lightweight C library
suncalc - A tiny JavaScript library for calculating sun/moon positions and phases.
STC - A modern, user friendly, generic, type-safe and fast C99 container library: String, Vector, Sorted and Unordered Map and Set, Deque, Forward List, Smart Pointers, Bitset and Random numbers.
roost - Proof of Concept for Eventsourced backend
ffprobe-wasm - A Web-based FFProbe. Powered by FFmpeg, Vue and Web Assembly!
LIPS - Scheme based powerful lisp interpreter in JavaScript
atbswp - A minimalist macro recorder
covid_status
auto-editor - Auto-Editor: Effort free video editing!