91 lines
3.2 KiB
C#
91 lines
3.2 KiB
C#
using Spine;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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namespace SpineViewer.Extensions
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{
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public static class SpineObjectExtension
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{
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/// <summary>
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/// 获取一个对象副本, 继承所有状态
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/// </summary>
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public static SpineObject Copy(this SpineObject self, bool keepTrackTime = false)
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{
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var spineObject = new SpineObject(self, true);
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// 拷贝轨道动画, 但是仅拷贝第一个条目
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foreach (var tr in self.AnimationState.IterTracks().Where(t => t is not null))
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{
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var t = spineObject.AnimationState.SetAnimation(tr!.TrackIndex, tr.Animation, tr.Loop);
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t.TimeScale = tr.TimeScale;
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t.Alpha = tr.Alpha;
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if (keepTrackTime)
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t.TrackTime = tr.TrackTime;
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}
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// XXX(#105): 部分 3.4.02 版本模型在设置动画后出现附件残留, 因此强制进行一次 Setup
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if (spineObject.Version == SpineVersion.V34)
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{
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spineObject.Skeleton.SetSlotsToSetupPose();
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}
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spineObject.Update(0);
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return spineObject;
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}
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/// <summary>
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/// 重置所有轨道的动画为第一个条目动画
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/// </summary>
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/// <param name="self"></param>
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public static void ResetAnimationsTime(this SpineObject self)
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{
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foreach (var e in self.AnimationState.IterTracks())
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{
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if (e is not null)
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e.TrackTime = 0; // 直接重置时间能保留原本的 TrackEntry
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//self.AnimationState.SetAnimation(e.TrackIndex, e.Animation, e.Loop);
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}
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self.Update(0);
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}
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/// <summary>
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/// 获取当前状态包围盒
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/// </summary>
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public static Rect GetCurrentBounds(this SpineObject self)
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{
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self.Skeleton.GetBounds(out var x, out var y, out var w, out var h);
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return new(x, y, Math.Max(w, 1e-6f), Math.Max(h, 1e-6f));
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}
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/// <summary>
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/// 计算所有轨道第一个条目的动画时长最大值
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/// </summary>
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/// <param name="self"></param>
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/// <returns></returns>
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public static float GetAnimationMaxDuration(this SpineObject self)
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{
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return self.AnimationState.IterTracks().Select(t => t?.Animation.Duration ?? 0).DefaultIfEmpty(0).Max();
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}
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/// <summary>
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/// 按给定的帧率获取所有轨道第一个条目动画全时长包围盒大小, 是一个耗时操作, 如果可能的话最好缓存结果
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/// </summary>
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public static Rect GetAnimationBounds(this SpineObject self, float fps = 30)
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{
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using var copy = self.Copy();
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var bounds = copy.GetCurrentBounds();
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var maxDuration = copy.GetAnimationMaxDuration();
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for (float tick = 0, delta = 1 / fps; tick < maxDuration; tick += delta)
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{
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bounds.Union(copy.GetCurrentBounds());
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copy.Update(delta);
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}
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return bounds;
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}
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}
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}
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