Add Makefile

Author: reemo3dp

.github/workflows/build.yaml

@@ -0,0 +1,27 @@
+name: Build and commit 3mfs
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    paths:
+      - '*.scad'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Render in OpenSCAD
+        run: |
+          set -euxo pipefail
+          docker run --rm -v $PWD:/work -w /work openscad/openscad:dev \
+            bash -c 'apt-get install -y make && make all'
+      - name: Commit changes
+        run: |
+          set -euxo pipefail
+          git config --global user.name "GitHub Actions"
+          git config --global user.email "githubactions@github.com"
+          git add -f stls/
+          git commit -m "Render 3mfs"
+          git push origin HEAD:master

.gitignore

@@ -1 +1,2 @@
 .env
+stls

Makefile

@@ -0,0 +1,20 @@
+OPENSCAD ?= openscad
+
+.PHONY: all clean
+
+clean:
+	rm -rf stls/
+
+all: \
+    $(patsubst %,stls/concave_R%.3mf,$(shell seq 1 30)) \
+	$(patsubst %,stls/convex_R%.3mf,$(shell seq 1 30))
+
+stls/concave_R%.3mf: concave.scad
+	@mkdir ./stls/ 2>/dev/null || true
+	# Run openscad and assert that stderr contains "Objects:\s+2"
+	$(OPENSCAD) -o $@ --enable lazy-union -D 'RADIUS=$*' $< 2>&1 | tee /dev/stderr | grep -qP 'Objects:\s+2'
+
+stls/convex_R%.3mf: convex.scad
+	@mkdir ./stls/ 2>/dev/null || true
+	# Run openscad and assert that stderr contains "Objects:\s+2"
+	$(OPENSCAD) -o $@ --enable lazy-union -D 'RADIUS=$*' $< 2>&1 | tee /dev/stderr | grep -qP 'Objects:\s+2'