53 lines
1.7 KiB
C#
53 lines
1.7 KiB
C#
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using System;
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using UnityEngine;
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namespace CharacterPreview
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{
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public class ModelMove:MonoBehaviour
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{
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private Camera _camera;
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public Camera currentCamera
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{
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get
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{
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if (!_camera)
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{
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_camera = Camera.main;
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if (!_camera)
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{
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_camera = FindObjectOfType<Camera>();
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}
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}
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return _camera;
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}
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}
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private void Start()
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{
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if (currentCamera)
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{
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var worldPos = CameraLocalToWorld(currentCamera, new Vector3(1, -1, 1));
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transform.position = worldPos;
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}
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else
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{
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transform.position = new Vector3(8, 8, -16);
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}
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}
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/// <summary>
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/// 将摄像机局部坐标系中的点转换为世界坐标系中的点。
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/// 假设摄像机局部坐标系：前向为 +Z，右为 +X，上为 +Y。
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/// </summary>
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/// <param name="camera">目标摄像机</param>
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/// <param name="localPoint">在摄像机局部坐标系中的点</param>
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/// <returns>对应的世界坐标</returns>
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public static Vector3 CameraLocalToWorld(Camera camera, Vector3 localPoint)
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{
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if (camera == null)
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throw new System.ArgumentNullException(nameof(camera));
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Transform camTransform = camera.transform;
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// 旋转局部点到世界方向，然后加上摄像机位置
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return camTransform.position + camTransform.rotation * localPoint;
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}
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}
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}
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