pre-bemis

rpi-case/.claude/skills/openscad/tools/render-with-params.sh

@@ -0,0 +1,91 @@
+#!/bin/bash
+# Render OpenSCAD with parameters from a JSON file
+# Usage: render-with-params.sh input.scad params.json output.stl|output.png
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+source "$SCRIPT_DIR/common.sh"
+
+check_openscad
+
+if [ $# -lt 3 ]; then
+    echo "Usage: $0 input.scad params.json output.[stl|png]"
+    echo ""
+    echo "params.json format:"
+    echo '  {"width": 60, "height": 40, "include_lid": true}'
+    exit 1
+fi
+
+INPUT="$1"
+PARAMS_FILE="$2"
+OUTPUT="$3"
+
+if [ ! -f "$INPUT" ]; then
+    echo "Error: Input file not found: $INPUT"
+    exit 1
+fi
+
+if [ ! -f "$PARAMS_FILE" ]; then
+    echo "Error: Params file not found: $PARAMS_FILE"
+    exit 1
+fi
+
+# Build -D arguments from JSON
+DEFINES=()
+while IFS= read -r line; do
+    # Parse each key-value pair
+    key=$(echo "$line" | cut -d'=' -f1)
+    value=$(echo "$line" | cut -d'=' -f2-)
+    
+    if [ -n "$key" ]; then
+        DEFINES+=("-D" "$key=$value")
+    fi
+done < <(
+    # Use python or jq to parse JSON to key=value lines
+    if command -v python3 &> /dev/null; then
+        python3 -c "
+import json
+with open('$PARAMS_FILE') as f:
+    params = json.load(f)
+for k, v in params.items():
+    if isinstance(v, bool):
+        print(f'{k}={str(v).lower()}')
+    elif isinstance(v, str):
+        print(f'{k}=\"{v}\"')
+    else:
+        print(f'{k}={v}')
+"
+    elif command -v jq &> /dev/null; then
+        jq -r 'to_entries | .[] | "\(.key)=\(.value)"' "$PARAMS_FILE"
+    else
+        echo "Error: Requires python3 or jq to parse JSON"
+        exit 1
+    fi
+)
+
+echo "Rendering with parameters from: $PARAMS_FILE"
+echo "Parameters: ${DEFINES[*]}"
+
+# Determine output type and set appropriate options
+EXT="${OUTPUT##*.}"
+case "$EXT" in
+    stl|STL)
+        $OPENSCAD "${DEFINES[@]}" -o "$OUTPUT" "$INPUT"
+        ;;
+    png|PNG)
+        $OPENSCAD "${DEFINES[@]}" \
+            --camera="0,0,0,55,0,25,0" \
+            --imgsize="800,600" \
+            --colorscheme="Tomorrow Night" \
+            --autocenter --viewall \
+            -o "$OUTPUT" "$INPUT"
+        ;;
+    *)
+        echo "Unsupported output format: $EXT"
+        echo "Supported: stl, png"
+        exit 1
+        ;;
+esac
+
+echo "Output saved: $OUTPUT"