VDH
90 lines
4.1 KiB
C#
90 lines
4.1 KiB
C#
using UnityEngine;
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using BrewMonster.Scripts;
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namespace BrewMonster
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{
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/// <summary>
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/// Utility functions for hook position/rotation calculation
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/// 挂点位置/旋转计算的工具函数
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/// </summary>
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public static class HookUtils
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{
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/// <summary>
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/// Get world position from hook Transform with offset
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/// 从挂点变换获取世界位置（带偏移）
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/// </summary>
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/// <param name="hookTransform">Hook Transform / 挂点变换</param>
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/// <param name="offset">Offset vector / 偏移向量</param>
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/// <param name="bRelative">If true, offset is relative to hook's local space; if false, absolute / 如果为true，偏移相对于挂点局部空间；如果为false，绝对偏移</param>
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/// <param name="modelTransform">Model transform for absolute offset calculation (optional) / 用于绝对偏移计算的模型变换（可选）</param>
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/// <returns>World position / 世界位置</returns>
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public static Vector3 GetHookWorldPosition(Transform hookTransform, Vector3 offset, bool bRelative, Transform modelTransform = null)
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{
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if (hookTransform == null)
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return Vector3.zero;
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if (bRelative)
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{
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// Relative offset: transform offset from hook's local space to world space
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// 相对偏移：将偏移从挂点的局部空间变换到世界空间
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// C++ equivalent: pHook->GetAbsoluteTM() * pOffset
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return hookTransform.TransformPoint(offset);
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}
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else
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{
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// Absolute offset: transform offset in model space, then translate to hook position
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// 绝对偏移：在模型空间中变换偏移，然后平移到挂点位置
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// C++ equivalent:
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// vPos = pSkin->GetAbsoluteTM() * pOffset;
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// vPos = vPos - pSkin->GetAbsoluteTM().GetRow(3) + pHook->GetAbsoluteTM().GetRow(3);
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// Get model transform (skeleton root or provided)
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// 获取模型变换（骨架根或提供的）
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if (modelTransform == null)
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{
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// Fallback: find SkeletonBuilder in hierarchy and use root bone
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// 回退：在层次结构中查找SkeletonBuilder并使用根骨骼
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SkeletonBuilder skeleton = hookTransform.GetComponentInParent<SkeletonBuilder>();
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modelTransform = skeleton != null ? skeleton.rootBone : hookTransform.root;
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}
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// Transform offset in model's world space
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// 在模型的世界空间中变换偏移
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Vector3 offsetWorld = modelTransform.TransformPoint(offset);
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// Translate to hook position
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// 平移到挂点位置
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return offsetWorld - modelTransform.position + hookTransform.position;
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}
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}
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/// <summary>
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/// Get world rotation from hook Transform
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/// 从挂点变换获取世界旋转
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/// </summary>
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/// <param name="hookTransform">Hook Transform / 挂点变换</param>
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/// <returns>World rotation / 世界旋转</returns>
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public static Quaternion GetHookWorldRotation(Transform hookTransform)
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{
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if (hookTransform == null)
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return Quaternion.identity;
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return hookTransform.rotation;
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}
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/// <summary>
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/// Get world direction from hook Transform
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/// 从挂点变换获取世界方向
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/// </summary>
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/// <param name="hookTransform">Hook Transform / 挂点变换</param>
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/// <returns>Forward direction in world space / 世界空间的前方向</returns>
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public static Vector3 GetHookWorldForward(Transform hookTransform)
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{
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if (hookTransform == null)
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return Vector3.forward;
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return hookTransform.forward;
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}
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}
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}
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