99 lines
3.6 KiB
C#
99 lines
3.6 KiB
C#
using UnityEngine;
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namespace NBF
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{
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public class ModelViewerUtils
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{
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public static ModelViewerSettings InitSetting(GameObject go, ModelViewerSettings settings)
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{
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if (settings.objectPosition.magnitude < 0.0001f)
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settings.objectPosition = Vector3.zero;
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//---Zero the GameObject euler angles if they're very small in magnitude---//
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settings.objectRotation = go.transform.eulerAngles;
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if (settings.objectRotation.magnitude < 0.0001f)
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settings.objectRotation = Vector3.zero;
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//---Set the object scale variable---//
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settings.objectScale = go.transform.localScale;
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//将默认对象位置设为使其位于图标中心的位置
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Bounds bounds = GetObjectBounds(go);
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settings.objectPosition = GetObjectAutoOffset(bounds);
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// 将默认的相机设置调整为适合图标渲染中对象的呈现效果
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float camAuto = GetCameraAuto(bounds);
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settings.cameraSize = camAuto;
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settings.cameraPosition = Vector3.one * camAuto;
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return settings;
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}
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public static Bounds GetObjectBounds(GameObject go)
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{
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// 在将其位置归零之前先保存其位置信息
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Vector3 prefabPos = go.transform.position;
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go.transform.position = Vector3.zero;
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// 创建一个边界对象，并将对象网格的边界进行封装。
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MeshRenderer mr = go.GetComponent<MeshRenderer>();
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Bounds bounds = new Bounds(Vector3.zero, 0.000001f * Vector3.one);
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if (mr != null)
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bounds.Encapsulate(mr.bounds);
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else
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{
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SkinnedMeshRenderer smr = go.GetComponent<SkinnedMeshRenderer>();
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if (smr != null)
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bounds.Encapsulate(smr.bounds);
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}
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//同时将对象的子对象的范围也进行封装起来
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EncapsulateChildBounds(go.transform, ref bounds);
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//将预制物的位置重置为存储的值
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go.transform.position = prefabPos;
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return bounds;
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}
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public static Vector3 GetObjectAutoOffset(Bounds bounds)
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{
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//将偏移量应用到图标对象的位置上
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return -bounds.center;
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}
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public static float GetCameraAuto(Bounds bounds)
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{
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//---Scale camera size and position so that the object fits in the render---//
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Matrix4x4 trs = Matrix4x4.TRS(Vector3.zero, Quaternion.Euler(0, 45, 0), 1.05f * Vector3.one);
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Vector3 corner = new Vector3(bounds.extents.x, bounds.extents.y, bounds.extents.z);
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corner = trs * corner;
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Vector2 refB2 = new Vector2(0.74f, 0.53f);
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Vector2 b2 = refB2 * corner.magnitude;
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return b2.magnitude;
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}
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public static void EncapsulateChildBounds(Transform t, ref Bounds bounds)
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{
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// 遍历所有子对象，封装边界
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MeshRenderer mr;
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for (int i = 0; i < t.childCount; i++)
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{
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mr = t.GetChild(i).GetComponent<MeshRenderer>();
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if (mr != null)
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bounds.Encapsulate(mr.bounds);
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else
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{
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SkinnedMeshRenderer smr = t.GetChild(i).GetComponent<SkinnedMeshRenderer>();
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if (smr != null)
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bounds.Encapsulate(smr.bounds);
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}
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EncapsulateChildBounds(t.GetChild(i), ref bounds);
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}
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}
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}
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} |