From 44c94d1da19193b9c06c8e4fd8ce4dd946484337 Mon Sep 17 00:00:00 2001
From: ramox81 <184937705+ramox81@users.noreply.github.com>
Date: Fri, 4 Sep 2026 09:39:23 +0300
Subject: [PATCH] Avoid surface meshes in live sweep previews

---
 Cargo.lock                         | 2 +-
 Cargo.toml                         | 2 +-
 src/modules/insert/solid3d_cmds.rs | 8 +++++---
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 671ff7c53..30020efbb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -878,7 +878,7 @@ checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04"
 [[package]]
 name = "cadkernel"
 version = "0.1.0"
-source = "git+https://github.com/HakanSeven12/cadkernel.git?rev=5fc881c0f6fbc7fb96d483cd3a4efe145ba6133f#5fc881c0f6fbc7fb96d483cd3a4efe145ba6133f"
+source = "git+https://github.com/HakanSeven12/cadkernel.git?rev=1a1505c7bb8e26770f14b49859587660c7519a25#1a1505c7bb8e26770f14b49859587660c7519a25"
 dependencies = [
  "acadrust",
  "cavalier_contours",
diff --git a/Cargo.toml b/Cargo.toml
index 1e2ce7451..5fc7e2fa3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,7 +28,7 @@ rfd = "0.17"
 clap = { version = "4", features = ["derive"] }
 env_logger = "0.11"
 acadrust = { git = "https://github.com/HakanSeven12/cadcodec.git", rev = "393d6c0857447f9ca678bed97a612707f0a842c6", features = ["serde"] }
-cadkernel = { git = "https://github.com/HakanSeven12/cadkernel.git", rev = "5fc881c0f6fbc7fb96d483cd3a4efe145ba6133f", features = ["acis", "offset"] }
+cadkernel = { git = "https://github.com/HakanSeven12/cadkernel.git", rev = "1a1505c7bb8e26770f14b49859587660c7519a25", features = ["acis", "offset"] }
 dwg-thumbnailer = { path = "crates/dwg-thumbnailer" }
 flate2 = "1"
 image = { version = "0.25", default-features = false, features = ["png", "jpeg", "bmp", "tiff"] }
diff --git a/src/modules/insert/solid3d_cmds.rs b/src/modules/insert/solid3d_cmds.rs
index 21b8c8fdf..4a1ddb76f 100644
--- a/src/modules/insert/solid3d_cmds.rs
+++ b/src/modules/insert/solid3d_cmds.rs
@@ -168,7 +168,9 @@ fn preview_body_wires(
     color: [f32; 4],
     isolines: usize,
 ) -> Vec<WireModel> {
-    let mesh = cadkernel::brep::mesh::tessellate(
+    // This overlay only consumes curves. Do not triangulate the body's faces
+    // on every cursor event just to discard the resulting surface mesh.
+    let wireframe = cadkernel::brep::mesh::tessellate_wireframe(
         body,
         cadkernel::brep::mesh::TessellationTolerance::new(
             cadkernel::tessellation::DEFAULT_ANGLE,
@@ -176,7 +178,7 @@ fn preview_body_wires(
         )
         .with_isolines(isolines),
     );
-    let mut wires = mesh
+    let mut wires = wireframe
         .edges
         .into_iter()
         .filter(|edge| edge.positions.len() >= 2)
@@ -190,7 +192,7 @@ fn preview_body_wires(
         })
         .collect::<Vec<_>>();
     wires.extend(
-        mesh.isolines
+        wireframe.isolines
             .into_iter()
             .filter(|line| line.positions.len() >= 2)
             .map(|line| {