37 lines
1.2 KiB
C#
37 lines
1.2 KiB
C#
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using UnityEngine;
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public class CameraAdjuster : MonoBehaviour
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{
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public Camera modelCamera; // 3D模型的摄像机
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public Transform modelTransform; // 3D模型的 Transform
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public float padding = 1.2f; // 额外边距，防止模型太贴近边界
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void Start()
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{
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AdjustCameraToFitModel();
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}
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public void AdjustCameraToFitModel()
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{
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if (modelTransform == null || modelCamera == null) return;
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Renderer modelRenderer = modelTransform.GetComponentInChildren<Renderer>();
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if (modelRenderer == null) return;
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Bounds bounds = modelRenderer.bounds; // 获取模型的包围盒
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float modelSize = Mathf.Max(bounds.size.x, bounds.size.y, bounds.size.z); // 取最大的尺寸
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if (modelCamera.orthographic) // 正交投影
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{
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modelCamera.orthographicSize = (modelSize / 2) * padding;
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}
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else // 透视投影
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{
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float distance = modelSize / (2 * Mathf.Tan(modelCamera.fieldOfView * 0.5f * Mathf.Deg2Rad));
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modelCamera.transform.position = bounds.center - modelCamera.transform.forward * distance * padding;
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}
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modelCamera.transform.LookAt(bounds.center); // 让摄像机对准模型中心
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}
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}
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