darwin/blender-hylang-live-code

Live-coding Blender with Hy(lang)

The future is here

I decided to experiment with embedding V8 into Blender and my current goal is to bring full ClojureScript support to Blender.

Please follow that work in darwin/blender-clojure project.

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Live-coding Blender with Hylang.

Running it

Tested under macOS, should work under Linux as well.

# note: this is probably not needed under macOS if you put Blender to /Applications/Blender.app 
# a pro tip: it is convenient to use direnv for this
export HYLC_BLENDER_PATH="/path/to/your/blender"
export HYLC_BLENDER_PYTHON_PATH="/path/to/your/blender/and/its/python"

• Run ./scripts/install-deps.sh to install the Hy-lang dependencies in a place where Blender's internal Python can find them.
• Run ./scripts/blender.sh examples/one-hundred-cubes.hy to start Blender watching one-hundred-cubes.hy and re-loading it whenever it changes.

Connecting via nREPL

First you have to enable it via env:

export HYLC_NREPL=1

Then running blender.sh should display nREPL server listening on ('127.0.0.1', 1337), see below:

> ./scripts/blender.sh examples/one-hundred-cubes.hy
HYLC_BLENDER_PATH=/Applications/Blender.app/Contents/MacOS/Blender
HYLC_BLENDER_PYTHON_PATH=/Applications/Blender.app/Contents/Resources/2.82/python
HYLC_LIVE_FILE=/Users/darwin/lab/blender-hylang-live-code/examples/one-hundred-cubes.hy
HYLC_NREPL=1
+ exec /Applications/Blender.app/Contents/MacOS/Blender assets/blank.blend --python /Users/darwin/lab/blender-hylang-live-code/src/watcher/main.py
Read prefs: /Users/darwin/Library/Application Support/Blender/2.82/config/userpref.blend
found bundled python: /Applications/Blender.app/Contents/Resources/2.82/python
Read blend: /Users/darwin/lab/blender-hylang-live-code/assets/blank.blend

==== hylc watcher =====
hy 0.18.0 using CPython(default) 3.7.4 on Darwin in Blender 2.82 (sub 7)
nREPL server listening on ('127.0.0.1', 1337)

Watching '/Users/darwin/lab/blender-hylang-live-code/examples/one-hundred-cubes.hy' for changes and re-loading.
Reloading '/Users/darwin/lab/blender-hylang-live-code/examples/one-hundred-cubes.hy'
Info: Deleted 0 object(s)
Done executing '/Users/darwin/lab/blender-hylang-live-code/examples/one-hundred-cubes.hy'
...

Then in another terminal session you can try to connect with lein repl and eval something:

> lein repl :connect 1337
Connecting to nREPL at 127.0.0.1:1337
HyREPL: hy 0.18.0 using CPython(default) 3.7.4 on Darwin in Blender 2.82 (sub 7)

Hy=> (+ 1 2)
3
Hy=>

My goal is to make this work with Cursive's remote nREPL support. Basic stuff works, but it needs more polish.