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dorkmodorkmo
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Merge pull request #67 from OpenSourceEcology/copilot/update-github-actions-render
Fix cnclayout.scad path and separate rendering workflows
2 parents 9843d07 + d778c02 commit 6f4124a

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‎.github/workflows/generate-animation-gif.yml‎

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name: Generate Animation GIF
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on:
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push:
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branches: [ main, master ]
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paths:
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- 'LifeTrac-v25/mechanical_design/openscad/lifetrac_v25.scad'
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- 'LifeTrac-v25/mechanical_design/openscad/**/*.scad'
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pull_request:
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branches: [ main, master ]
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paths:
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- 'LifeTrac-v25/mechanical_design/openscad/lifetrac_v25.scad'
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- 'LifeTrac-v25/mechanical_design/openscad/**/*.scad'
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workflow_dispatch:
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jobs:
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generate-animation-gif:
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runs-on: ubuntu-latest
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permissions:
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contents: write
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steps:
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- uses: actions/checkout@v4
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with:
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token: ${{ secrets.GITHUB_TOKEN }}
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ref: ${{ github.head_ref || github.ref_name }}
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fetch-depth: 0
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- name: Install OpenSCAD and ImageMagick
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run: |
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sudo apt-get update
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sudo apt-get install -y openscad xvfb x11-utils imagemagick
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openscad --version
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- name: Start Xvfb
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run: |
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Xvfb :99 -screen 0 1024x768x16 &
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XVFB_PID=$!
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echo "XVFB_PID=$XVFB_PID" >> $GITHUB_ENV
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# Wait for Xvfb to be ready (max 10 seconds)
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for i in {1..10}; do
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if xdpyinfo -display :99 >/dev/null 2>&1; then
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echo "Xvfb is ready on display :99"
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break
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fi
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if [ $i -eq 10 ]; then
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echo "Timeout waiting for Xvfb to start"
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exit 1
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fi
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sleep 1
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done
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echo "DISPLAY=:99" >> $GITHUB_ENV
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- name: Calculate camera position
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run: |
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cd LifeTrac-v25/mechanical_design
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# Calculate camera position dynamically based on machine dimensions
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# Extract parameters from OpenSCAD file
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MACHINE_HEIGHT=$(grep -E "^MACHINE_HEIGHT = " openscad/lifetrac_v25.scad | grep -oE "[0-9]+\.?[0-9]*" || echo "1000")
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WHEEL_BASE=$(grep -E "^WHEEL_BASE = " openscad/lifetrac_v25.scad | grep -oE "[0-9]+\.?[0-9]*" || echo "1400")
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GROUND_CLEARANCE=$(grep -E "^GROUND_CLEARANCE = " openscad/lifetrac_v25.scad | grep -oE "[0-9]+\.?[0-9]*" || echo "150")
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ARM_MAX_ANGLE=$(grep -E "^ARM_MAX_ANGLE = " openscad/lifetrac_v25.scad | grep -oE "[0-9]+\.?[0-9]*" || echo "60")
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BUCKET_HEIGHT=$(grep -E "^BUCKET_HEIGHT = " openscad/lifetrac_v25.scad | grep -oE "[0-9]+\.?[0-9]*" || echo "450")
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# Validate all extracted parameters
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if [ -z "$MACHINE_HEIGHT" ] || [ -z "$WHEEL_BASE" ] || [ -z "$GROUND_CLEARANCE" ] || [ -z "$ARM_MAX_ANGLE" ] || [ -z "$BUCKET_HEIGHT" ]; then
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echo "ERROR: Failed to extract required parameters from OpenSCAD file"
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echo " MACHINE_HEIGHT: $MACHINE_HEIGHT"
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echo " WHEEL_BASE: $WHEEL_BASE"
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echo " GROUND_CLEARANCE: $GROUND_CLEARANCE"
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echo " ARM_MAX_ANGLE: $ARM_MAX_ANGLE"
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echo " BUCKET_HEIGHT: $BUCKET_HEIGHT"
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exit 1
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fi
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# Calculate key dimensions
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FRAME_Z_OFFSET=$GROUND_CLEARANCE
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ARM_PIVOT_Z=$((FRAME_Z_OFFSET + MACHINE_HEIGHT - 50))
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WHEEL_MIDPOINT_Y=$((WHEEL_BASE / 2))
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# Calculate maximum height when arms are raised to ARM_MAX_ANGLE
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ARM_LENGTH_APPROX=1600
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# Max height = ARM_PIVOT_Z + ARM_LENGTH * sin(ARM_MAX_ANGLE) + BUCKET_HEIGHT
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MAX_ARM_TIP_HEIGHT=$(awk "BEGIN {pi=3.14159; print int($ARM_PIVOT_Z + $ARM_LENGTH_APPROX * sin($ARM_MAX_ANGLE * pi / 180) + $BUCKET_HEIGHT)}")
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# Calculate camera position to frame the scene properly
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SCENE_HEIGHT=$MAX_ARM_TIP_HEIGHT
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MARGIN_FACTOR="1.75"
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# Center point: halfway between ground and max height, at wheel midpoint Y
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CENTER_Y=$WHEEL_MIDPOINT_Y
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CENTER_Z=$(awk "BEGIN {print int($SCENE_HEIGHT / 2)}")
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# Camera distance
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CAMERA_DISTANCE=$(awk "BEGIN {print int($SCENE_HEIGHT * $MARGIN_FACTOR * 1.414)}")
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echo "=== Camera Calculation ==="
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echo "Camera position: --camera=$CAMERA_DISTANCE,$CAMERA_DISTANCE,$CAMERA_DISTANCE,0,$CENTER_Y,$CENTER_Z"
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echo "=========================="
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# Export calculated values as environment variables for subsequent steps
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echo "CAMERA_DISTANCE=$CAMERA_DISTANCE" >> $GITHUB_ENV
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echo "CENTER_Y=$CENTER_Y" >> $GITHUB_ENV
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echo "CENTER_Z=$CENTER_Z" >> $GITHUB_ENV
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- name: Create output directories
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run: |
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cd LifeTrac-v25/mechanical_design
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mkdir -p output/animations/frames
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- name: Generate animation frames
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run: |
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cd LifeTrac-v25/mechanical_design
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# Use camera parameters calculated in previous step (from environment variables)
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echo "Generating animation frames with calculated camera position..."
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echo "Camera: $CAMERA_DISTANCE,$CAMERA_DISTANCE,$CAMERA_DISTANCE,0,$CENTER_Y,$CENTER_Z"
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# Generate 36 frames for animation (every 10 degrees)
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# Using dynamically calculated camera position that adapts to machine dimensions
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total_frames=36
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for i in $(seq 0 $((total_frames-1))); do
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# Use total_frames-1 so last frame lands exactly at t=1.0
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t=$(awk "BEGIN {print $i/($total_frames-1)}")
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printf "Frame %d (t=%.4f)\n" "$i" "$t"
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openscad -o "output/animations/frames/frame_$(printf %03d $i).png" \
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--camera=$CAMERA_DISTANCE,$CAMERA_DISTANCE,$CAMERA_DISTANCE,0,$CENTER_Y,$CENTER_Z \
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--imgsize=720,720 \
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--projection=p \
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--colorscheme=Nature \
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-D "animation_time=$t" \
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-D "\$t=$t" \
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openscad/lifetrac_v25.scad
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done
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echo "Animation frames generated"
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- name: Create animation GIF
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run: |
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cd LifeTrac-v25/mechanical_design/output/animations
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echo "Creating animation GIF of arm movement..."
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convert -delay 10 -loop 0 frames/frame_*.png lifetrac_v25_animation.gif
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# Copy to parent directory for easy access
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cp lifetrac_v25_animation.gif ../../lifetrac_v25_animation.gif
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echo "✓ Animation GIF created successfully"
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ls -lh ../../lifetrac_v25_animation.gif
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- name: Upload animation artifacts
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uses: actions/upload-artifact@v4
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with:
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name: openscad-animation
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path: |
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LifeTrac-v25/mechanical_design/output/animations/
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LifeTrac-v25/mechanical_design/lifetrac_v25_animation.gif
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retention-days: 90
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- name: Commit and push animation GIF
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run: |
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cd LifeTrac-v25/mechanical_design
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git config --global user.email "github-actions[bot]@users.noreply.github.com"
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git config --global user.name "github-actions[bot]"
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git add lifetrac_v25_animation.gif || true
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if git diff --staged --quiet; then
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echo "ℹ️ No changes to commit"
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else
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echo "📝 Committing changes..."
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git commit -m "Update animation GIF [skip ci]"
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# Fetch and rebase to incorporate any remote changes
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BRANCH_NAME="${{ github.head_ref || github.ref_name }}"
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echo "🔄 Fetching latest changes from branch: ${BRANCH_NAME}..."
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if git fetch origin "${BRANCH_NAME}"; then
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echo "🔄 Rebasing on latest changes..."
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if ! git rebase "origin/${BRANCH_NAME}"; then
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echo "❌ Failed to rebase. There may be conflicts."
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echo "Aborting rebase and exiting..."
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git rebase --abort
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exit 1
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fi
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else
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echo "⚠️ Could not fetch branch ${BRANCH_NAME} from origin. This may be a PR from a fork. Skipping fetch/rebase."
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fi
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echo "📤 Pushing changes with --force-with-lease..."
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if git push --force-with-lease; then
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echo "✅ Changes pushed successfully"
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else
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echo "⚠️ Push failed. This is expected for PRs from forks or if you do not have write permissions."
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echo "The files are available as workflow artifacts."
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fi
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fi
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- name: Cleanup Xvfb
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if: always()
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run: |
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if [ -n "$XVFB_PID" ]; then
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echo "Stopping Xvfb process (PID: $XVFB_PID)"
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# Try graceful shutdown first
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kill -TERM $XVFB_PID 2>/dev/null || true
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# Wait up to 5 seconds for process to terminate
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for i in {1..5}; do
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if ! kill -0 $XVFB_PID 2>/dev/null; then
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echo "Xvfb stopped gracefully"
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break
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fi
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sleep 1
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done
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# Force kill if still running
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kill -KILL $XVFB_PID 2>/dev/null || true
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echo "Xvfb force stopped"
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fi

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