Initial Commit

2025-07-04 20:33:06 +03:00
commit 8f09347ae0
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+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * Licensed under the Oculus SDK License Agreement (the "License");
+ * you may not use the Oculus SDK except in compliance with the License,
+ * which is provided at the time of installation or download, or which
+ * otherwise accompanies this software in either electronic or hard copy form.
+ *
+ * You may obtain a copy of the License at
+ *
+ * https://developer.oculus.com/licenses/oculussdk/
+ *
+ * Unless required by applicable law or agreed to in writing, the Oculus SDK
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+using UnityEngine;
+
+namespace Oculus.Interaction
+{
+    public static class TransformExtensions
+    {
+        /// <summary>
+        /// Transforms position from world space to local space
+        /// </summary>
+        public static Vector3 InverseTransformPointUnscaled(this Transform transform, Vector3 position)
+        {
+            Matrix4x4 worldToLocal = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one).inverse;
+            return worldToLocal.MultiplyPoint3x4(position);
+        }
+
+        /// <summary>
+        /// Transforms position from local space to world space
+        /// </summary>
+        public static Vector3 TransformPointUnscaled(this Transform transform, Vector3 position)
+        {
+            Matrix4x4 localToWorld = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one);
+            return localToWorld.MultiplyPoint3x4(position);
+        }
+
+        /// <summary>
+        /// Transform a bounding box from local to world space.
+        /// </summary>
+        /// <param name="transform">Transfrom that
+        /// <paramref name="bounds"/> is local to</param>
+        /// <param name="bounds">The bounds to transform, in local space</param>
+        /// <returns>The bounding box in world space</returns>
+        public static Bounds TransformBounds(this Transform transform, in Bounds bounds)
+        {
+            Bounds worldBounds = new Bounds();
+
+            Vector3 boundsMin = bounds.min;
+            Vector3 boundsMax = bounds.max;
+            Vector3 min = transform.position;
+            Vector3 max = transform.position;
+            Matrix4x4 m = transform.localToWorldMatrix;
+
+            for (int i = 0; i < 3; ++i)
+            {
+                for (int j = 0; j < 3; ++j)
+                {
+                    float e = m[i, j] * boundsMin[j];
+                    float f = m[i, j] * boundsMax[j];
+                    min[i] += (e < f) ? e : f;
+                    max[i] += (e < f) ? f : e;
+                }
+            }
+
+            worldBounds.SetMinMax(min, max);
+            return worldBounds;
+        }
+
+        public static Transform FindChildRecursive(this Transform parent, string name)
+        {
+            foreach (Transform child in parent)
+            {
+                if (child.name.Contains(name))
+                    return child;
+
+                var result = child.FindChildRecursive(name);
+                if (result != null)
+                    return result;
+            }
+            return null;
+        }
+    }
+}