Mandelbrot
Mandelbrot set viewer made with Svelte/JS and Rust-Wasm for my graduation work
Mandelbrot set
The v1 tag marks a commit with a performance fix I deployed 4 hours before my coursework defense.
Try online
https://istudyatuni.github.io/mandelbrot
Build WASM
You need rust and cargo for installing build tool, see rustup. Install wasm-pack:
cargo install wasm-pack
Build:
./scripts/build-wasm.sh
# or
yarn build:wasm
# version with debug logging enabled
yarn build:wasm:debug
Running locally
yarn dev
Precision problem
At around 45x zoom artifacts start to appear, because double-precision floats, f64, are not sufficiently accurate. This can be fixed by using arbitrary-precision arithmetic library. I tried it, and it has very poor performance - see benchmarks below. You can try it on test/high-precision branch with:
cd wasm
cargo bench
Benchmarks
With f64, 1600x752, 256 steps:
calc fully black time: [719.05 ms 720.09 ms 721.23 ms]
Found 9 outliers among 100 measurements (9.00%)
3 (3.00%) high mild
6 (6.00%) high severe
calc main view time: [4.6180 ms 4.6422 ms 4.6705 ms]
Found 15 outliers among 100 measurements (15.00%)
7 (7.00%) high mild
8 (8.00%) high severe
With arbitrary-precision library, 1x2, 18 steps:
looooong/calc fully black time: [23.873 s 23.885 s 23.899 s]
looooong/calc main view time: [1.2665 µs 1.2677 µs 1.2690 µs]
With arbitrary-precision library, 1x2, 20 steps:
looooong/calc fully black time: [139.85 s 139.86 s 139.87 s]
Found 1 outliers among 10 measurements (10.00%)
1 (10.00%) high mild
With arbitrary-precision library, 10x20, 20 steps:
looooong/calc main view time: [143.26 µs 143.35 µs 143.50 µs]
