canvas_ity
codebase-visualizer-action
canvas_ity | codebase-visualizer-action | |
---|---|---|
7 | 11 | |
318 | 61 | |
- | - | |
2.5 | 0.0 | |
2 months ago | over 1 year ago | |
C++ | ||
ISC License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
canvas_ity
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Writing a TrueType font renderer
I have a small TTF implementation that's in the neighborhood of that size and is open source. It's part of my canvas_ity single-header library [0] that's around 2300 LOC / 36 KB object size and implements a C++ version of most of the 2D HTML5 canvas spec [1].
The core implementation of the TTF parsing and drawing is in L1526-L1846 with another small bit at L3205-L3274 of src/canvas_ity.hpp.
It's something of a toy implementation that only supports western left-to-right text, and doesn't do any hinting at all, nor kerning, nor shaping. But it's enough to draw a basic "Hello world!" using any typical TTF file.
The test suite in test/test.cpp L84-304 embeds a few custom Base64-encoded TTF files. They're small and only have a few glyphs but they do exercise a number of interesting edge cases in the OpenType TTF spec [2]. Have a look at the HTML5 port of the test suite at test/test.html in different browsers to see how their canvas implementations render those fonts.
[0] https://github.com/a-e-k/canvas_ity
[1] https://www.w3.org/TR/2015/REC-2dcontext-20151119/
[2] https://standards.iso.org/ittf/PubliclyAvailableStandards/c0...
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The Lone Developer Problem
Agreed, that sort of documentation is pure gold when done well.
It's something I always try to pay forward by doing in my own code. For example, one of my own solo projects was an STB-style single-header -like rasterizer library for C++. I started the implementation half of the library with a short outline of the rendering pipeline's dataflow and the top-level functions responsible for each stage:
https://github.com/a-e-k/canvas_ity/blob/f32fbb37e2fe7c0fcae...
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Ask HN: What have you created that deserves a second chance on HN?
https://github.com/a-e-k/canvas_ity
This is an STB-style single-header C++ library with no dependencies beyond the standard C++ library. In about 2300 lines of 78-column code (not counting blanks or comments), or 1300 semicolons, it implements an API based on the basic W3C specification to draw 2D vector graphics into an image buffer:
- Strokes and fills (with antialiasing and gamma-correct blending)
- Linear and radial gradients
- Patterns (with repeat modes and bi-cubic resampling)
- Line caps and line joins (handling high curvature)
- Dash patterns and dash offsets
- Transforms
- Lines, quadratic and cubic Beziers, arcs, and rectangles
- Text (very basic, but does its own TTF font file parsing!)
- Raster images (i.e., sprites)
- Clipping (via masking)
- Compositing modes (Porter-Duff)
- Drop shadows with Gaussian blurs
I also uncovered a number of interesting browser quirks along the way with the HTML5 port of my testing suite.
- Hello, PNG
- A tiny, single-header -like 2D rasterizer for C++
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canvas_ity - A tiny, single-header <canvas>-like 2D rasterizer
Repository: https://github.com/a-e-k/canvas_ity
- Show HN: Canvas_ity – A tiny, single-header -like 2D rasterizer for C++
codebase-visualizer-action
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Treemaps Are Awesome!
Nice post - treemaps are great!
My friend and I made a codebase visualisation tool (https://www.codeatlas.dev/gallery) that's based on Voronoi treemaps, maybe of interest as an illustration of the aesthetics with a non-rectangular layout!
We've opted for zooming through double-clicks as the main method of navigating the map, because in deep codebases, the individual cells quickly get too small to accurately target with the cursor as shown in the key-path label approach!
If anyone's interested, this is also available as a Github Action to generate the treemap during CI: https://github.com/codeatlasHQ/codebase-visualizer-action
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Gource – Animate your Git history
If you find this type of codebase visualisation useful, you might want to checkout codeatlas.dev and its Github Action (https://github.com/codeatlasHQ/codebase-visualizer-action). It doesn't animate the repo over time like gource (yet), but instead aims to give a beautiful interactive visual snapshot of a repo at a particular point in time. It also lets you zoom in on specific aspects like recent commit activity, programming language and hopefully in the future test coverage.
E.g. see here for a visualisation of the pytorch codebase we did a while ago: https://codeatlas.dev/gallery/pytorch/pytorch
(disclaimer: I'm the author)
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Show HN: Git Heat Map – a tool for visualising Git repo activity for each file
If you think this is useful, you might also like codeatlas.dev and its Github Action (https://github.com/codeatlasHQ/codebase-visualizer-action). It currently does not support per-contributor activity, but we put a lot of effort into making the diagrams beautiful to look at and the basic approach of using treemaps for visualisation seems very similar. In fact, could be cool to collaborate on this, DM me if interested!
https://codeatlas.dev
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Ask HN: Those making $0/month or less on side projects – Show and tell
https://codeatlas.dev - codebase visualisation tool
Takes your git repo and generates a beautiful visual representation of the code. Sort of an alternative navigation tool (in addition to IDEs) for large codebases. Can also run it as part of CI with our Github Action (https://github.com/codeatlasHQ/codebase-visualizer-action).
We made this because grokking complex software projects is really difficult and we've found that a visual overview of what's in a codebase can be quite helpful to get started.
E.g. checkout https://codeatlas.dev/gallery/kubernetes/kubernetes for the generated visualisation of the Kubernetes Github repo!
Currently making -10$/year to pay for the domain :D We slowed down active development after our initial attempts at dissemination didn't really go anywhere (bragging about side projects on the internet, ugh), but I'm still really keen on getting some feedback on whether this is actually useful to anyone else!
Note: The site works somewhat on mobile, but is much better on desktop!
Also, funny there's a post like this again, just like https://news.ycombinator.com/item?id=34531989 yesterday.
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Ask HN: What have you created that deserves a second chance on HN?
https://codeatlas.dev - codebase visualisation tool
It takes your git repo and generates a beautiful visual representation of the actual code that's in it. Sort of an alternative navigation tool (in addition to IDEs) for large codebases. You can run codeatlas as part of your CI with our Github Action (https://github.com/codeatlasHQ/codebase-visualizer-action).
We made this because grokking complex software projects is really difficult and we've found that a visual overview of what's in a codebase can be quite helpful to get started.
E.g. checkout https://codeatlas.dev/gallery/kubernetes/kubernetes for the generated visualisation of the Kubernetes Github repo!
We slowed down active development after our initial attempts at dissemination didn't really go anywhere (bragging about side projects on the internet, ugh), but would still love feedback on whether this is possibly useful to anyone else!
Note: The site works somewhat on mobile, but is much better on desktop!
- Show HN: Codeatlas – Visualize your codebases during CI
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Ask HN: Why aren't code diagram generating tools more common?
I've already mentioned this on the other thread (https://news.ycombinator.com/item?id=31569646), but my friend and I have been working on [https://www.codeatlas.dev](https://www.codeatlas.dev/) as a sideproject - it's a tool for creating pretty (2D!) visualisations of codebases, while providing additional insights via overlays (e.g. commit density, programming language or other results from static analysis like dead code/test coverage/etc.). For example here's the Kubernetes codebase visualised using codeatlas: [https://www.codeatlas.dev/repo/kubernetes/kubernetes](https:....
At the moment, codeatlas is just the static gallery, but we're only a few weekends away from releasing a Github action that deploys this diagram on github pages for your own repos - if you're interested, feel free to watch this repo: https://github.com/codeatlasHQ/codebase-visualizer-action
OP, how close is this to what you had in mind in your question?
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Ask HN: Visualizing software designs, especially of large systems (if at all)?
My friend and I have been working on https://www.codeatlas.dev in our spare time, which is a tool that creates pretty (2D!) visualisations of codebases, while providing additional insights via overlays (e.g. commit density, programming language). For example here's the Kubernetes codebase visualised using codeatlas: https://www.codeatlas.dev/repo/kubernetes/kubernetes.
At the moment, codeatlas is only a static gallery, but we're currently about 1-2 weekends away from releasing a Github action that deploys this diagram on github pages for your own repos - if you're interested, feel free to watch this repo: https://github.com/codeatlasHQ/codebase-visualizer-action
What are some alternatives?
nanovgXC - Lightweight vector graphics library implementing exact-coverage antialiasing in OpenGL
spekt8 - Visualize your Kubernetes cluster in real time
tinf - Tiny inflate library (inflate, gzip, zlib)
TypeScript-Call-Graph - CLI to generate an interactive graph of functions and calls from your TypeScript files
Tephra - A modern, high-performance C++17 graphics and compute library based on Vulkan
jtree - Build your own language using Tree Notation.
art - @Bigfan/art is a React custom renderer for HTML5 Canvas.
scipipe - Robust, flexible and resource-efficient pipelines using Go and the commandline
osxphotos - Python app to work with pictures and associated metadata from Apple Photos on macOS. Also includes a package to provide programmatic access to the Photos library, pictures, and metadata.
dbcview - Quickly visualize senders and receivers in a DBC
fpng - Super fast C++ .PNG writer/reader
atomic - Chat with and teach your calendar to solve your scheduling & time problems