Added example script hashing for optimized image generation.

scripts/make_all_docs.sh

@@ -1,7 +1,18 @@
 #!/bin/bash
 
-if [[ $# > 0 ]]; then
-    PREVIEW_LIBS="$@"
+FORCED=""
+IMGGEN=""
+FILES=""
+for opt in "$@" ; do
+  case $opt in
+    -f ) FORCED=$opt ;;
+    -i ) IMGGEN=$opt ;;
+    * ) FILES="$FILES $opt" ;;
+  esac
+done
+
+if [[ "$FILES" != "" ]]; then
+    PREVIEW_LIBS="$FILES"
 else
     PREVIEW_LIBS="common errors attachments math arrays vectors affine coords geometry triangulation quaternions hull constants edges transforms primitives shapes masks shapes2d paths beziers roundcorners walls metric_screws threading involute_gears sliders joiners linear_bearings nema_steppers wiring phillips_drive torx_drive polyhedra debug"
 fi
@@ -18,10 +29,11 @@ rm -f tmpscad*.scad
 for lib in $PREVIEW_LIBS; do
     lib="$(basename $lib .scad)"
     mkdir -p images/$lib
-    rm -f images/$lib/*.png images/$lib/*.gif
-    # echo ../scripts/docs_gen.py ../$lib.scad -o $lib.scad.md -c -i -I images/$lib/
+    if [ "$IMGGEN" = "-i" ]; then
+        rm -f images/$lib/*.png images/$lib/*.gif
+    fi
     echo "$lib.scad"
-    ../scripts/docs_gen.py ../$lib.scad -o $lib.scad.md -c -i -I images/$lib/ || exit 1
+    ../scripts/docs_gen.py ../$lib.scad -o $lib.scad.md -c $IMGGEN $FORCED -I images/$lib/ || exit 1
     open -a Typora $lib.scad.md
 done