pre-bemis

rpi-case/.claude/skills/openscad/tools/preview.sh

@@ -0,0 +1,74 @@
+#!/bin/bash
+# Generate a preview PNG from an OpenSCAD file
+# Usage: preview.sh input.scad output.png [options]
+#
+# Options:
+#   --camera=x,y,z,rx,ry,rz,dist  Camera position
+#   --size=WxH                     Image size (default: 800x600)
+#   -D 'var=value'                 Set parameter value
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+source "$SCRIPT_DIR/common.sh"
+
+check_openscad
+
+if [ $# -lt 2 ]; then
+    echo "Usage: $0 input.scad output.png [--camera=...] [--size=WxH] [-D 'var=val']"
+    echo ""
+    echo "Camera format: x,y,z,rotx,roty,rotz,distance"
+    echo "Common cameras:"
+    echo "  Isometric: --camera=0,0,0,55,0,25,200"
+    echo "  Front:     --camera=0,0,0,90,0,0,200"
+    echo "  Top:       --camera=0,0,0,0,0,0,200"
+    exit 1
+fi
+
+INPUT="$1"
+OUTPUT="$2"
+shift 2
+
+# Defaults
+CAMERA="0,0,0,55,0,25,0"
+SIZE="800,600"
+DEFINES=()
+
+# Parse options
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --camera=*)
+            CAMERA="${1#--camera=}"
+            ;;
+        --size=*)
+            SIZE="${1#--size=}"
+            SIZE="${SIZE/x/,}"
+            ;;
+        -D)
+            shift
+            DEFINES+=("-D" "$1")
+            ;;
+        *)
+            echo "Unknown option: $1"
+            exit 1
+            ;;
+    esac
+    shift
+done
+
+# Ensure output directory exists
+mkdir -p "$(dirname "$OUTPUT")"
+
+# Run OpenSCAD
+echo "Rendering preview: $INPUT -> $OUTPUT"
+$OPENSCAD \
+    --camera="$CAMERA" \
+    --imgsize="${SIZE}" \
+    --colorscheme="Tomorrow Night" \
+    --autocenter \
+    --viewall \
+    "${DEFINES[@]}" \
+    -o "$OUTPUT" \
+    "$INPUT"
+
+echo "Preview saved to: $OUTPUT"