From 8ea5075385819547bbca7c1f7c11127008240cea Mon Sep 17 00:00:00 2001
From: marbocub <marbocub@gmail.com>
Date: Tue, 2 Dec 2025 01:50:31 +0900
Subject: [PATCH] Sketcher: Fix error when first constraint is
 DistanceX/DistanceY to vertex (#25813)

---
 src/Mod/Sketcher/App/PythonConverter.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Mod/Sketcher/App/PythonConverter.cpp b/src/Mod/Sketcher/App/PythonConverter.cpp
index bfb918c01a..592075bd6e 100644
--- a/src/Mod/Sketcher/App/PythonConverter.cpp
+++ b/src/Mod/Sketcher/App/PythonConverter.cpp
@@ -636,7 +636,8 @@ std::string PythonConverter::process(const Sketcher::Constraint* constraint, Geo
                 std::string& geoId1,
                 std::string& geoId2,
                 [[maybe_unused]] std::string& geoId3) {
-                 if (constr->Second == GeoEnum::GeoUndef) {
+                 if (constr->FirstPos == Sketcher::PointPos::none
+                     && constr->Second == GeoEnum::GeoUndef) {
                      return boost::str(
                          boost::format("Sketcher.Constraint('DistanceX', %s, %f") % geoId1
                          % constr->getValue()
@@ -661,7 +662,8 @@ std::string PythonConverter::process(const Sketcher::Constraint* constraint, Geo
                 std::string& geoId1,
                 std::string& geoId2,
                 [[maybe_unused]] std::string& geoId3) {
-                 if (constr->Second == GeoEnum::GeoUndef) {
+                 if (constr->FirstPos == Sketcher::PointPos::none
+                     && constr->Second == GeoEnum::GeoUndef) {
                      return boost::str(
                          boost::format("Sketcher.Constraint('DistanceY', %s, %f") % geoId1
                          % constr->getValue()