561 lines
21 KiB
C#
561 lines
21 KiB
C#
// Magica Cloth 2.
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// Copyright (c) 2023 MagicaSoft.
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// https://magicasoft.jp
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using System;
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using Unity.Burst;
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using Unity.Collections;
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using Unity.Jobs;
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using Unity.Mathematics;
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using UnityEngine;
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#if MAGICACLOTH2_REDUCTION_DEBUG
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using UnityEngine;
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#endif
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namespace MagicaCloth2
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{
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/// <summary>
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/// 距離内のすべての頂点を一度に結合させる
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/// </summary>
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public class SameDistanceReduction : IDisposable
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{
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string name = string.Empty;
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VirtualMesh vmesh;
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ReductionWorkData workData;
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ResultCode result;
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float mergeLength;
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//=========================================================================================
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GridMap<int> gridMap;
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//NativeParallelHashSet<int2> joinPairSet;
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NativeParallelMultiHashMap<ushort, ushort> joinPairMap;
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NativeReference<int> resultRef;
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//=========================================================================================
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public SameDistanceReduction() { }
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public SameDistanceReduction(
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string name,
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VirtualMesh mesh,
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ReductionWorkData workingData,
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float mergeLength
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)
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{
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this.name = name;
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this.vmesh = mesh;
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this.workData = workingData;
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this.result = ResultCode.None;
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this.mergeLength = math.max(mergeLength, 1e-09f);
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}
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public virtual void Dispose()
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{
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//if (joinPairSet.IsCreated)
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// joinPairSet.Dispose();
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if (joinPairMap.IsCreated)
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joinPairMap.Dispose();
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if (resultRef.IsCreated)
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resultRef.Dispose();
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gridMap?.Dispose();
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}
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public ResultCode Result => result;
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//=========================================================================================
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/// <summary>
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/// リダクション実行（スレッド可）
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/// </summary>
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/// <returns></returns>
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public ResultCode Reduction()
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{
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//bool success = false;
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result.Clear();
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try
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{
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// グリッドマップ
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gridMap = new GridMap<int>(vmesh.VertexCount);
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// 最適なグリッドサイズを割り出す(mergeLengthは>0が保証されている)
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float gridSize = mergeLength * 2.0f;
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// 頂点ごとの接続マップ
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// インデックスが若い方が記録する
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//joinPairSet = new NativeParallelHashSet<int2>(vmesh.VertexCount / 4, Allocator.Persistent);
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joinPairMap = new NativeParallelMultiHashMap<ushort, ushort>(vmesh.VertexCount, Allocator.Persistent);
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resultRef = new NativeReference<int>(Allocator.Persistent);
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// ポイントをグリッドに登録
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var initGridJob = new InitGridJob()
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{
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vcnt = vmesh.VertexCount,
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gridSize = gridSize,
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localPositions = vmesh.localPositions.GetNativeArray(),
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joinIndices = workData.vertexJoinIndices,
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gridMap = gridMap.GetMultiHashMap(),
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};
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initGridJob.Run();
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// 近傍頂点を検索、結合マップに登録する
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var searchJoinJob = new SearchJoinJob()
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{
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vcnt = vmesh.VertexCount,
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gridSize = gridSize,
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radius = mergeLength,
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localPositions = vmesh.localPositions.GetNativeArray(),
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joinIndices = workData.vertexJoinIndices,
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gridMap = gridMap.GetMultiHashMap(),
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//joinPairSet = joinPairSet,
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joinPairMap = joinPairMap,
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};
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searchJoinJob.Run();
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// 結合する
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#if false
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var joinJob = new JoinJob()
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{
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vertexCount = vmesh.VertexCount,
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//joinPairSet = joinPairSet,
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joinPairMap = joinPairMap,
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joinIndices = workData.vertexJoinIndices,
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vertexToVertexMap = workData.vertexToVertexMap,
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boneWeights = vmesh.boneWeights.GetNativeArray(),
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attributes = vmesh.attributes.GetNativeArray(),
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result = resultRef,
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};
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joinJob.Run();
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#endif
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#if true
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// 高速化および詳細メッシュがある場合に１つの頂点に大量に結合しオーバーフローが発生する問題を回避したもの
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// 以前はA->B->C結合時にA->C間が接続距離以上でもA->Cが結合されてしまったが、この改良版ではそれがおこならない
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// そのため以前とは結果がことなることに注意！
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using var tempList = new NativeList<ushort>(2048, Allocator.Persistent);
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var joinJob2 = new JoinJob2()
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{
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vertexCount = vmesh.VertexCount,
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joinPairMap = joinPairMap,
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joinIndices = workData.vertexJoinIndices,
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vertexToVertexMap = workData.vertexToVertexMap,
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boneWeights = vmesh.boneWeights.GetNativeArray(),
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attributes = vmesh.attributes.GetNativeArray(),
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result = resultRef,
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tempList = tempList,
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};
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joinJob2.Run();
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#endif
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// 頂点の接続状態を最新に更新する。すべて最新の生存ポイントを指すように変更する
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UpdateJoinAndLink();
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// 頂点情報を整理する
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// 法線単位化
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// ボーンウエイトを１に平均化
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UpdateReductionResultJob();
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// 削除頂点数集計
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int removeVertexCount = resultRef.Value;
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workData.removeVertexCount += removeVertexCount;
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//Debug.Log($"[SameDistanceReduction [{name}]] mergeLength:{mergeLength} RemoveVertex:{removeVertexCount}");
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// 完了
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//success = true;
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result.SetSuccess();
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}
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catch (Exception exception)
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{
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Debug.LogError(exception);
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result.SetError(Define.Result.Reduction_SameDistanceException);
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}
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finally
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{
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// 作業バッファを解放する（重要）
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// ★仮にタスクが例外やキャンセルされたとしてもこれで作成したバッファは正しくDispose()される
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//MagicaManager.Discard.Add();
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// 登録したジョブを解除する（重要）
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// ★仮にタスクが例外やキャンセルされたとしてもこれで発行したJobは正しくComplete()される
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//MagicaManager.Thread.DisposeJob(int);
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}
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return result;
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}
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//=========================================================================================
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[BurstCompile]
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struct InitGridJob : IJob
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{
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public int vcnt;
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public float gridSize;
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[Unity.Collections.ReadOnly]
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public NativeArray<float3> localPositions;
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[Unity.Collections.ReadOnly]
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public NativeArray<int> joinIndices;
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public NativeParallelMultiHashMap<int3, int> gridMap;
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// 頂点ごと
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public void Execute()
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{
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for (int vindex = 0; vindex < vcnt; vindex++)
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{
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if (joinIndices[vindex] >= 0)
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continue; // isDelete
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GridMap<int>.AddGrid(localPositions[vindex], vindex, gridMap, gridSize);
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}
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}
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}
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[BurstCompile]
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struct SearchJoinJob : IJob
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{
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public int vcnt;
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public float gridSize;
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public float radius;
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[Unity.Collections.ReadOnly]
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public NativeArray<float3> localPositions;
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[Unity.Collections.ReadOnly]
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public NativeArray<int> joinIndices;
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[Unity.Collections.ReadOnly]
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public NativeParallelMultiHashMap<int3, int> gridMap;
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//public NativeParallelHashSet<int2> joinPairSet;
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public NativeParallelMultiHashMap<ushort, ushort> joinPairMap;
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public void Execute()
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{
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for (int vindex = 0; vindex < vcnt; vindex++)
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{
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if (joinIndices[vindex] >= 0)
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continue; // isDelete
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float3 pos = localPositions[vindex];
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// 範囲グリッド走査
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foreach (int3 grid in GridMap<int>.GetArea(pos, radius, gridMap, gridSize))
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{
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if (gridMap.ContainsKey(grid) == false)
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continue;
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// このグリッドを検索する
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foreach (int tvindex in gridMap.GetValuesForKey(grid))
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{
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// 自身は弾く
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if (tvindex == vindex)
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continue;
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// 距離判定
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float3 tpos = localPositions[tvindex];
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float dist = math.distance(pos, tpos);
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if (dist > radius)
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continue;
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// 結合登録
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//int2 ehash = DataUtility.PackInt2(vindex, tvindex);
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//joinPairSet.Add(ehash);
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joinPairMap.Add((ushort)vindex, (ushort)tvindex);
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}
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}
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}
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}
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}
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[BurstCompile]
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struct JoinJob2 : IJob
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{
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public int vertexCount;
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[Unity.Collections.ReadOnly]
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public NativeParallelMultiHashMap<ushort, ushort> joinPairMap;
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public NativeArray<int> joinIndices;
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public NativeParallelMultiHashMap<ushort, ushort> vertexToVertexMap;
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public NativeArray<VirtualMeshBoneWeight> boneWeights;
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public NativeArray<VertexAttribute> attributes;
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public NativeReference<int> result;
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public NativeList<ushort> tempList;
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public void Execute()
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{
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int cnt = 0;
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for (ushort vindexLive = 0; vindexLive < vertexCount; vindexLive++)
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{
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// すでに結合済みならスキップ
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if (joinIndices[vindexLive] >= 0)
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continue;
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// 対象ループ
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foreach (ushort vindexDead in joinPairMap.GetValuesForKey(vindexLive))
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{
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// 対象がすでに結合ずみならスキップ
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if (joinIndices[vindexDead] >= 0)
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continue;
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// 結合(vertexDead -> vertexLive)
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joinIndices[vindexDead] = vindexLive;
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cnt++;
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vertexToVertexMap.MC2RemoveValue(vindexLive, vindexDead);
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tempList.Clear();
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foreach (ushort i in vertexToVertexMap.GetValuesForKey(vindexDead))
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{
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tempList.Add(i);
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}
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foreach (ushort i in tempList)
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{
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if (joinIndices[i] >= 0)
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continue;
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if (i == vindexLive || i == vindexDead)
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continue;
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vertexToVertexMap.MC2RemoveValue(i, vindexDead);
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vertexToVertexMap.MC2UniqueAdd(vindexLive, i);
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vertexToVertexMap.MC2UniqueAdd(i, vindexLive);
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// p2にBoneWeightを結合
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var bw = boneWeights[vindexLive];
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bw.AddWeight(boneWeights[vindexDead]);
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boneWeights[vindexLive] = bw;
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// 属性
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var attr1 = attributes[vindexDead];
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var attr2 = attributes[vindexLive];
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attributes[vindexLive] = VertexAttribute.JoinAttribute(attr1, attr2);
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attributes[vindexDead] = VertexAttribute.Invalid; // 削除頂点は無効にする
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}
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}
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}
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// 削除頂点数記録
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result.Value = cnt;
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}
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}
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#if false // old
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[BurstCompile]
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struct JoinJob : IJob
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{
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[Unity.Collections.ReadOnly]
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public NativeParallelHashSet<int2> joinPairSet;
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public NativeArray<int> joinIndices;
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public NativeParallelMultiHashMap<ushort, ushort> vertexToVertexMap;
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public NativeArray<VirtualMeshBoneWeight> boneWeights;
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public NativeArray<VertexAttribute> attributes;
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public NativeReference<int> result;
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public void Execute()
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{
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var workSet = new FixedList512Bytes<ushort>();
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int cnt = 0;
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foreach (var ehash in joinPairSet)
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{
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int vindexLive = ehash[0]; // 生存側
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int vindexDead = ehash[1]; // 削除側
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while (joinIndices[vindexDead] >= 0)
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{
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vindexDead = joinIndices[vindexDead];
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}
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while (joinIndices[vindexLive] >= 0)
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{
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vindexLive = joinIndices[vindexLive];
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}
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if (vindexDead == vindexLive)
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continue;
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// 結合(vertex1 -> vertex2)
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joinIndices[vindexDead] = vindexLive;
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cnt++;
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// 接続数を結合する（重複は弾かれる）
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workSet.Clear();
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foreach (ushort i in vertexToVertexMap.GetValuesForKey((ushort)vindexDead))
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{
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int index = i;
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// 生存インデックス
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while (joinIndices[index] >= 0)
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{
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index = joinIndices[index];
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}
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if (index != vindexDead && index != vindexLive)
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workSet.MC2Set((ushort)index);
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}
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foreach (ushort i in vertexToVertexMap.GetValuesForKey((ushort)vindexLive))
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{
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int index = i;
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// 生存インデックス
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while (joinIndices[index] >= 0)
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{
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index = joinIndices[index];
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}
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if (index != vindexDead && index != vindexLive)
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workSet.MC2Set((ushort)index);
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}
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vertexToVertexMap.Remove((ushort)vindexLive);
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for (int i = 0; i < workSet.Length; i++)
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{
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vertexToVertexMap.Add((ushort)vindexLive, workSet[i]);
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}
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//Debug.Assert(workSet.Length > 0);
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// p2にBoneWeightを結合
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var bw = boneWeights[vindexLive];
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bw.AddWeight(boneWeights[vindexDead]);
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boneWeights[vindexLive] = bw;
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// 属性
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var attr1 = attributes[vindexDead];
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var attr2 = attributes[vindexLive];
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attributes[vindexLive] = VertexAttribute.JoinAttribute(attr1, attr2);
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attributes[vindexDead] = VertexAttribute.Invalid; // 削除頂点は無効にする
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}
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// 削除頂点数記録
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result.Value = cnt;
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}
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}
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#endif
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//=========================================================================================
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/// <summary>
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/// 接続状態を最新に更新するジョブを発行する
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/// </summary>
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/// <param name="jobHandle"></param>
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/// <returns></returns>
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void UpdateJoinAndLink()
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{
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// JoinIndexの状態を更新する。現在の最新の生存ポイントを指すように変更する
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var updateJoinIndexJob = new UpdateJoinIndexJob()
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{
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joinIndices = workData.vertexJoinIndices,
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};
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updateJoinIndexJob.Run(vmesh.VertexCount);
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// 頂点の接続頂点リストを最新に更新する。すべて最新の生存ポイントを指すように変更する
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var updateLinkIndexJob = new UpdateLinkIndexJob()
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{
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joinIndices = workData.vertexJoinIndices,
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vertexToVertexMap = workData.vertexToVertexMap,
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};
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updateLinkIndexJob.Run(vmesh.VertexCount);
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}
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[BurstCompile]
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struct UpdateJoinIndexJob : IJobParallelFor
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{
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[NativeDisableParallelForRestriction]
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public NativeArray<int> joinIndices;
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public void Execute(int vindex)
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{
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int join = joinIndices[vindex];
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if (join >= 0)
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{
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// 削除されている
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// 最終的な生存ポイントに連結させる
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while (joinIndices[join] >= 0)
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{
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join = joinIndices[join];
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}
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joinIndices[vindex] = join;
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}
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}
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}
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[BurstCompile]
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struct UpdateLinkIndexJob : IJobParallelFor
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{
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[NativeDisableParallelForRestriction]
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public NativeArray<int> joinIndices;
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public NativeParallelMultiHashMap<ushort, ushort> vertexToVertexMap;
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public void Execute(int vindex)
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{
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int join = joinIndices[vindex];
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// 自身が削除されている場合は無視
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if (join >= 0)
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return;
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// 自身が生存している
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// 現在の接続インデックスから削除されたものを生存インデックスに入れ替える
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var newLinkSet = new FixedList512Bytes<ushort>();
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foreach (ushort i in vertexToVertexMap.GetValuesForKey((ushort)vindex))
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{
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int tvindex = i;
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int tjoin = joinIndices[tvindex];
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if (tjoin >= 0)
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{
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// 削除されている
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tvindex = tjoin;
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Debug.Assert(joinIndices[tvindex] < 0);
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}
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// 自身は弾く
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if (tvindex == vindex)
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continue;
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newLinkSet.MC2Set((ushort)tvindex);
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}
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// 生存のみの新しいセットに入れ替え
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vertexToVertexMap.Remove((ushort)vindex);
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for (int i = 0; i < newLinkSet.Length; i++)
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{
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vertexToVertexMap.Add((ushort)vindex, newLinkSet[i]);
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}
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//Debug.Assert(newLinkSet.Length > 0);
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}
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}
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//=========================================================================================
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/// <summary>
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/// リダクション後のデータを整える
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/// </summary>
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void UpdateReductionResultJob()
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{
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// 頂点法線の単位化、およびボーンウエイトを１に整える
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var finalVertexJob = new FinalMergeVertexJob()
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{
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joinIndices = workData.vertexJoinIndices,
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localNormals = vmesh.localNormals.GetNativeArray(),
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boneWeights = vmesh.boneWeights.GetNativeArray(),
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};
|
|
finalVertexJob.Run(vmesh.VertexCount);
|
|
}
|
|
|
|
[BurstCompile]
|
|
struct FinalMergeVertexJob : IJobParallelFor
|
|
{
|
|
[Unity.Collections.ReadOnly]
|
|
public NativeArray<int> joinIndices;
|
|
|
|
public NativeArray<float3> localNormals;
|
|
public NativeArray<VirtualMeshBoneWeight> boneWeights;
|
|
|
|
// 頂点ごと
|
|
public void Execute(int vindex)
|
|
{
|
|
int join = joinIndices[vindex];
|
|
if (join >= 0)
|
|
{
|
|
// 削除されている
|
|
return;
|
|
}
|
|
|
|
// 法線単位化
|
|
localNormals[vindex] = math.normalize(localNormals[vindex]);
|
|
|
|
// ボーンウエイトを平均化
|
|
var bw = boneWeights[vindex];
|
|
bw.AdjustWeight();
|
|
boneWeights[vindex] = bw;
|
|
}
|
|
}
|
|
}
|
|
}
|