From a8e20bb5903b2eed5d917aded6cf60843cb21483 Mon Sep 17 00:00:00 2001
From: Caleb Goates <caleb@zoo.dev>
Date: Wed, 9 Sep 2026 08:53:25 -0600
Subject: [PATCH 1/2] Add an optional tangent chain argument to fillet and
 chamfer calls

---
 modeling-cmds/src/def_enum.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/modeling-cmds/src/def_enum.rs b/modeling-cmds/src/def_enum.rs
index 25ae4a6f..e58776e6 100644
--- a/modeling-cmds/src/def_enum.rs
+++ b/modeling-cmds/src/def_enum.rs
@@ -1469,6 +1469,10 @@ define_modeling_cmd_enum! {
             #[serde(default, skip_serializing_if = "EdgeCutVersion::is_default")]
             #[builder(default)]
             pub version: EdgeCutVersion,
+            /// If true, also cut edges that are tangent to the selected edges.
+            #[serde(default, skip_serializing_if = "super::is_false")]
+            #[builder(default)]
+            pub tangent_chain: bool,
         }
 
         /// Cut the list of given edges with the given cut parameters.
@@ -1511,6 +1515,10 @@ define_modeling_cmd_enum! {
             #[serde(default, skip_serializing_if = "EdgeCutVersion::is_default")]
             #[builder(default)]
             pub version: EdgeCutVersion,
+            /// If true, also cut edges that are tangent to the selected edges.
+            #[serde(default, skip_serializing_if = "super::is_false")]
+            #[builder(default)]
+            pub tangent_chain: bool,
         }
 
         /// Determines whether a brep face is planar and returns its surface-local planar axes if so

From 9fddfd63aaad7f98f740c801b0d6b3d6dbe0bba6 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]" <github-actions[bot]@users.noreply.github.com>
Date: Thu, 10 Sep 2026 22:20:54 +0000
Subject: [PATCH 2/2] Update OpenAPI specification

---
 modeling-cmds/openapi/api.json | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/modeling-cmds/openapi/api.json b/modeling-cmds/openapi/api.json
index ac1a173c..5ca5ab75 100644
--- a/modeling-cmds/openapi/api.json
+++ b/modeling-cmds/openapi/api.json
@@ -5636,6 +5636,10 @@
                   }
                 ]
               },
+              "tangent_chain": {
+                "description": "If true, also cut edges that are tangent to the selected edges.",
+                "type": "boolean"
+              },
               "tolerance": {
                 "description": "The maximum acceptable surface gap computed between the cut surfaces. Must be positive (i.e. greater than zero).",
                 "allOf": [
@@ -5714,6 +5718,10 @@
                   }
                 ]
               },
+              "tangent_chain": {
+                "description": "If true, also cut edges that are tangent to the selected edges.",
+                "type": "boolean"
+              },
               "tolerance": {
                 "description": "The maximum acceptable surface gap computed between the cut surfaces. Must be positive (i.e. greater than zero).",
                 "allOf": [