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