From 33251daa12146a8c76dc976cbf09da2524809945 Mon Sep 17 00:00:00 2001
From: Alfredo Monclus <alfredomonclus@gmail.com>
Date: Sat, 3 Aug 2024 19:18:32 -0300
Subject: [PATCH] feat(PD): tapered threads support, NPT and BSPT are now
 possible

---
 src/Mod/PartDesign/App/FeatureHole.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Mod/PartDesign/App/FeatureHole.cpp b/src/Mod/PartDesign/App/FeatureHole.cpp
index 1e84a16f2e..3cafc412cf 100644
--- a/src/Mod/PartDesign/App/FeatureHole.cpp
+++ b/src/Mod/PartDesign/App/FeatureHole.cpp
@@ -2297,7 +2297,9 @@ TopoDS_Shape Hole::makeThread(const gp_Vec& xDir, const gp_Vec& zDir, double len
                 helixLength = holeDepth + Pitch / 8;
         }
     }
-    TopoDS_Shape helix = TopoShape().makeLongHelix(Pitch, helixLength, Dmaj, 0.0, leftHanded);
+    double helixAngle =
+        Tapered.getValue() ? TaperedAngle.getValue() - 90 : 0.0;
+    TopoDS_Shape helix = TopoShape().makeLongHelix(Pitch, helixLength, Dmaj, helixAngle, leftHanded);
 
     gp_Pnt origo(0.0, 0.0, 0.0);
     gp_Dir dir_axis1(0.0, 0.0, 1.0);  // pointing along the helix axis, as created.