From 570db9cc961445e5de2e33648082d59c0c72feaa Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Wed, 15 Apr 2026 14:48:07 +0200
Subject: [PATCH] Add batch preview handling for brushes, entities, and model
 instances in ViewportHost

---
 src/viewport-three/viewport-host.ts | 40 +++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/src/viewport-three/viewport-host.ts b/src/viewport-three/viewport-host.ts
index ec58c06e..fe7af99d 100644
--- a/src/viewport-three/viewport-host.ts
+++ b/src/viewport-three/viewport-host.ts
@@ -2356,6 +2356,20 @@ export class ViewportHost {
     axisConstraint: TransformAxis | null,
     axisConstraintSpace: TransformAxisSpace
   ) {
+    if (
+      session.target.kind === "brushes" ||
+      session.target.kind === "entities" ||
+      session.target.kind === "modelInstances"
+    ) {
+      return this.buildBatchTranslatedPreview(
+        session,
+        origin,
+        current,
+        axisConstraint,
+        axisConstraintSpace
+      );
+    }
+
     if (
       session.target.kind === "brushFace" ||
       session.target.kind === "brushEdge" ||
@@ -2527,6 +2541,20 @@ export class ViewportHost {
     axisConstraint: TransformAxis | null,
     axisConstraintSpace: TransformAxisSpace
   ) {
+    if (
+      session.target.kind === "brushes" ||
+      session.target.kind === "entities" ||
+      session.target.kind === "modelInstances"
+    ) {
+      return this.buildBatchRotatedPreview(
+        session,
+        origin,
+        current,
+        axisConstraint,
+        axisConstraintSpace
+      );
+    }
+
     if (
       session.target.kind === "brushFace" ||
       session.target.kind === "brushEdge"
@@ -2729,6 +2757,18 @@ export class ViewportHost {
     current: { x: number; y: number },
     axisConstraint: TransformAxis | null
   ) {
+    if (
+      session.target.kind === "brushes" ||
+      session.target.kind === "modelInstances"
+    ) {
+      return this.buildBatchScaledPreview(
+        session,
+        origin,
+        current,
+        axisConstraint
+      );
+    }
+
     if (
       session.target.kind === "brushFace" ||
       session.target.kind === "brushEdge"