Added existing files

.gitattributes

@@ -0,0 +1,6 @@
+# Always use our version of the below files
+.gitattributes merge=ours
+.github merge=ours
+docker merge=ours
+build.sh merge=ours
+wapm.toml merge=ours

.github/workflows/build.yml

@@ -0,0 +1,80 @@
+# Automated builds for Cura Engine
+
+name: Build
+
+on:
+  # Run when pushed
+  push:
+    branches:
+      - main
+
+env:
+  # SHA256 of Benchy GCODE for an Ultimaker 2
+  BENCHY_HASH: f4654841badfc91a22afd35593ef6024203c0ae3cefa119bd119711eecc3c737
+
+jobs:
+  # Build and test Cura Engine
+  build:
+    name: Build Cura Engine
+    runs-on: ubuntu-latest
+    steps:
+      # Checkout source code
+      - name: Checkout source code
+        uses: actions/checkout@v2
+
+      # Setup Wasmer
+      - name: Setup Wasmer
+        uses: cloud-cnc/setup-wasmer@v1
+
+      # Checkout 3D printer definitions
+      - name: Checkout 3D printer definitions
+        uses: actions/checkout@v2
+        with:
+          path: cura
+          repository: Ultimaker/Cura
+
+      # Download data
+      - name: Download data
+        run: |
+          mkdir data
+          wget https://github.com/CreativeTools/3DBenchy/raw/master/Single-part/3DBenchy.stl -O data/benchy.stl
+
+      # Build the Docker image
+      - name: Build the Docker image
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: docker/build.dockerfile
+          push: false
+          tags: cloud-cnc/cura-engine
+
+      # Run the Docker image
+      - name: Run the Docker image
+        uses: addnab/docker-run-action@v3
+        with:
+          image: cloud-cnc/cura-engine
+          options: -v ${{ github.workspace }}/build:/root/cura-engine/build
+          run: ./build.sh
+
+      # Move the build
+      - name: Move the build
+        run: sudo mv ./build/CuraEngine.wasm ./cura-engine.wasm
+
+      # Slice Benchy
+      - name: Slice Benchy
+        run: wasmer ./cura-engine.wasm --mapdir /definitions:./cura/resources/definitions --mapdir /data:./data -- slice -j /definitions/ultimaker2.def.json -o /data/benchy.gcode -l /data/benchy.stl
+
+      # Verify output
+      - name: Verify output
+        working-directory: data
+        run: |
+          if [ "${{ hashFiles('./benchy.gcode') }}" != "${{ env.BENCHY_HASH }}" ]; then
+            exit 1
+          fi
+
+      # Cache the build
+      - name: Cache the build
+        uses: actions/cache@v2
+        with:
+          key: build-production-${{ hashFiles('./cura-engine.wasm') }}
+          path: ./cura-engine.wasm

.github/workflows/publish.yml

@@ -0,0 +1,48 @@
+# Automated publishing for Cura Engine
+
+name: Publish
+
+on:
+  # Run when a new release is created
+  release:
+    types:
+      - published
+
+jobs:
+  # Publish Cura Engine to WAPM
+  publish:
+    name: Publish Cura Engine to WAPM
+    runs-on: ubuntu-latest
+    steps:
+      # Checkout source code
+      - name: Checkout source code
+        uses: actions/checkout@v2
+        with:
+          path: source
+
+      # Setup Wasmer
+      - name: Setup Wasmer
+        uses: cloud-cnc/setup-wasmer@v1
+
+      # Restore the build from the cache
+      - name: Restore the build
+        uses: actions/cache@v2
+        with:
+          key: build-production-
+          restore-keys: build-production-
+          path: ./cura-engine.wasm
+
+      # Add package assets to a dedicated directory
+      - name: Add package assets
+        run: |
+          mkdir package
+          mv ./cura-engine.wasm package
+          mv ./source/README.md package
+          mv ./source/wapm.toml package
+
+      # Publish to WAPM
+      - name: Publish to WAPM
+        uses: cloud-cnc/wapm-publish@v1
+        with:
+          username: ${{ secrets.WAPM_USERNAME }}
+          password: ${{ secrets.WAPM_PASSWORD }}

.github/workflows/sync.yml

@@ -0,0 +1,43 @@
+# Synchronize this repository with its upstream source (ultimaker/curaengine)
+
+name: Synchronize
+
+on:
+  # Run every Saturday at 00:00 UTC
+  schedule:
+    - cron: '0 0 * * 6'
+
+  # Run when manually triggered
+  workflow_dispatch:
+
+jobs:
+  synchronize:
+    name: Synchronize with upstream
+    runs-on: ubuntu-latest
+    steps:
+      # Checkout downstream (This repository)
+      - name: Checkout downstream
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      # Authenticate to Git
+      - name: Authenticate to Git
+        uses: OleksiyRudenko/gha-git-credentials@v2
+        with:
+          token: ${{ github.token }}
+
+      # Merge upstream
+      - name: Merge upstream
+        run: |
+          git config merge.ours.driver true
+          git config pull.rebase false
+          git remote add upstream https://github.com/ultimaker/curaengine.git
+          git pull upstream master
+          git merge upstream/master
+
+      # Stage and commit changes
+      - name: Add and commit changes
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: Synchronized with upstream

CMakeLists.txt

@@ -51,6 +51,11 @@ endif()
 
 set(CMAKE_CXX_STANDARD 11)
 
+# Disable exceptions (Fix for https://github.com/WebAssembly/wasi-sdk#notable-limitations)
+if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions")
+endif()
+
 if(APPLE AND CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
 endif()
@@ -101,7 +106,7 @@ if (ENABLE_MORE_COMPILER_OPTIMIZATION_FLAGS AND NOT (CMAKE_BUILD_TYPE_UPPER MATC
     if (MSVC)
         set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS} /fp:fast")
     else()
-        set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS} -Ofast -funroll-loops")
+        set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS} -funroll-loops")
     endif()
 endif ()
 
@@ -215,7 +220,6 @@ set(engine_SRCS # Except main.cpp.
     src/utils/polygon.cpp
     src/utils/ProximityPointLink.cpp
     src/utils/SVG.cpp
-    src/utils/socket.cpp
 )
 
 # List of tests. For each test there must be a file tests/${NAME}.cpp.