Mesh utils

Center at target

src/utils/MeshUtils.ts

@@ -15,7 +15,19 @@ export function centerMesh<T extends Mesh>(mesh: T): void {
 }
 
 /**
- * Centers the geometry of the given mesh at the local origin (0, 0, 0) by modifying the geometry vertices.
+ * Centers a Mesh at the specified target position.
+ */
+export function centerMeshAtTarget<T extends Mesh>(mesh: T, target = new Vector3(0, 0, 0)) {
+  const box = new Box3().setFromObject(mesh);
+  const currentCenter = new Vector3();
+  box.getCenter(currentCenter);
+
+  const offset = new Vector3().subVectors(target, currentCenter);
+  mesh.position.add(offset);
+}
+
+/**
+ * Centers the geometry of the Mesh at the local origin (0, 0, 0) by modifying the geometry vertices.
  * This method moves the geometry itself so that its center is at the local origin,
  * without affecting the position, rotation, or scale of the mesh.
  */
@@ -28,3 +40,17 @@ export function centerMeshGeometry<T extends Mesh>(mesh: T): void {
     mesh.geometry.translate(-center.x, -center.y, -center.z);
   }
 }
+
+/**
+ * Centers the geometry of a Mesh at the specified target position.
+ */
+export function centerMeshGeometryAtTarget<T extends Mesh>(mesh: T, target = new Vector3(0, 0, 0)) {
+  mesh.geometry.computeBoundingBox();
+  const box = mesh.geometry.boundingBox;
+
+  if (box) {
+    const center = box.getCenter(new Vector3());
+    const offset = new Vector3().subVectors(target, center);
+    mesh.geometry.translate(offset.x, offset.y, offset.z);
+  }
+}