freecad-diff

#!/bin/bash

set -e

echo ">>> starting freecad-diff $@"

FREECAD=freecadcmd
[[ -n "$INTERACTIVE" ]] && FREECAD="env XDG_SESSION_TYPE= freecad"

BINARY_DIR="$(dirname $(realpath "$0"))"
MACROS_DIR="$BINARY_DIR"
if [[ "$BINARY_DIR" = "/usr/local/bin" ]]; then
        MACROS_DIR="/usr/share/freecad/Macro"
fi

MODIFIED="$1"
PREVIOUS="$2"

PREVIOUS_DIR="$(dirname "$PREVIOUS")"
MODIFIED_DIR="$(dirname "$MODIFIED")"

export FREECAD_USER_HOME=$(mktemp -d /tmp/freecad.XXXXXXX)

freecadcmd -c 'import FreeCADGui as Gui; Gui.setupWithoutGUI()'

TMP=$(mktemp -d /tmp/meshdiff.XXXXXXXX)

rsync -rt "${MODIFIED_DIR}/" "${TMP}/modified/"
rsync -rt "${MODIFIED_DIR}/" "${TMP}/previous/"
rsync -rt "${PREVIOUS_DIR}/" "${TMP}/previous/"

OLD="${TMP}/previous/$(basename $PREVIOUS)"
NEW="${TMP}/modified/$(basename $MODIFIED)"
OLD_MESH="${TMP}/previous.step"
NEW_MESH="${TMP}/modified.step"
DIFF_MESH="${TMP}/diff-output.step"

$FREECAD ${BINARY_DIR}/freecad-export.py "${OLD}" "${OLD_MESH}"
$FREECAD ${BINARY_DIR}/freecad-export.py "${NEW}" "${NEW_MESH}"
$FREECAD ${BINARY_DIR}/freecad-diff.py "$NEW_MESH" "$OLD_MESH" "$DIFF_MESH"

rm -rf "${FREECAD_USER_HOME}"

if [[ -f "$DIFF_MESH" ]]; then
        XDG_SESSION_TYPE= freecad "$DIFF_MESH" ${MACROS_DIR}/show-diff.FCMacro
else
        echo "!!! failed to generate diff for $NEW in $TMP"
fi

rm -rf "$TMP"