From de8b523c3d62c09072302934739fa6aacb8703a0 Mon Sep 17 00:00:00 2001 From: zhangqing Date: Mon, 22 Dec 2025 18:45:49 +0800 Subject: [PATCH] =?UTF-8?q?=E9=A1=B6=E7=82=B9=E8=89=B2=E8=AE=BE=E7=BD=AE?= =?UTF-8?q?=E6=88=90=E5=8A=9F=EF=BC=8C=E9=A1=B6=E7=82=B9=E4=BB=8E=E7=83=AD?= =?UTF-8?q?=E5=8A=9B=E4=BD=93=E7=B4=A0=E9=87=87=E6=A0=B7=E9=80=BB=E8=BE=91?= =?UTF-8?q?=E9=9C=80=E8=A6=81=E6=A3=80=E6=9F=A5=EF=BC=8C=E9=83=A8=E5=88=86?= =?UTF-8?q?=E7=83=AD=E5=8A=9B=E5=8C=BA=E5=9F=9F=E6=B2=A1=E6=9C=89=E9=87=87?= =?UTF-8?q?=E6=A0=B7=E5=88=B0=E9=A1=B6=E7=82=B9?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- Content/Maps/Demo.umap | Bin 389500 -> 389500 bytes Content/Res/Materials/M_VertexColor.uasset | Bin 14369 -> 15287 bytes Source/BladeSmith/DynamicIronBlock.cpp | 83 ++++++++++++--------- 3 files changed, 48 insertions(+), 35 deletions(-) diff --git a/Content/Maps/Demo.umap b/Content/Maps/Demo.umap index 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DynMesh->ProcessMesh([&](const FDynamicMesh3& ReadMesh) { - // 确保网格启用了顶点颜色属性 - if (!EditMesh.HasVertexColors()) - { - EditMesh.EnableVertexColors(FVector3f::Zero()); // 初始化为黑色 - } + VertexCount = ReadMesh.MaxVertexID(); - // 遍历所有顶点 - int32 ColoredVertices = 0; - float MinTemp = FLT_MAX; - float MaxTemp = -FLT_MAX; - FVector3f FirstVertexColor = FVector3f::Zero(); - float FirstVertexTemp = 0.0f; - FVector FirstVertexPos = FVector::ZeroVector; + // 预分配颜色数组大小 + VertexColors.Reserve(VertexCount); - for (int32 VertexID : EditMesh.VertexIndicesItr()) + for (int32 VertexID = 0; VertexID < VertexCount; ++VertexID) { + if (!ReadMesh.IsVertex(VertexID)) + { + // 对于无效顶点，使用默认颜色 + VertexColors.Add(FLinearColor::Black); + continue; + } + // 获取顶点位置（局部坐标） - FVector3d VertexPos = EditMesh.GetVertex(VertexID); + FVector3d VertexPos = ReadMesh.GetVertex(VertexID); FVector VertexPosFloat(VertexPos.X, VertexPos.Y, VertexPos.Z); // 采样该位置的温度 - float Temperature = SampleTemperatureAtPosition(VertexPosFloat); - + //float Temperature = SampleTemperatureAtPosition(VertexPosFloat); + float Temperature = 900; // 统计温度范围 MinTemp = FMath::Min(MinTemp, Temperature); MaxTemp = FMath::Max(MaxTemp, Temperature); // 将温度转换为黑体辐射颜色 FLinearColor TempColor = TemperatureToColor(Temperature); + VertexColors.Add(TempColor); - // 设置顶点颜色（FDynamicMesh3使用FVector3f表示颜色，范围0-1） - FVector3f VertexColor = FVector3f(TempColor.R, TempColor.G, TempColor.B); - EditMesh.SetVertexColor(VertexID, VertexColor); - - // 记录第一个顶点的信息用于调试 - if (ColoredVertices == 0) + // 记录第一个有效顶点的信息用于调试 + if (VertexID == 0) { - FirstVertexColor = VertexColor; + FirstVertexColor = TempColor; FirstVertexTemp = Temperature; FirstVertexPos = VertexPosFloat; } - - ++ColoredVertices; } + }); - UE_LOG(LogTemp, Warning, TEXT("=== UpdateVertexColors Debug Info ===")); - UE_LOG(LogTemp, Warning, TEXT(" Total vertices: %d"), ColoredVertices); - UE_LOG(LogTemp, Warning, TEXT(" Temperature range: %.1f°C - %.1f°C"), MinTemp, MaxTemp); - UE_LOG(LogTemp, Warning, TEXT(" First vertex: Pos=(%.1f, %.1f, %.1f), Temp=%.1f°C, Color=(%.3f, %.3f, %.3f)"), - FirstVertexPos.X, FirstVertexPos.Y, FirstVertexPos.Z, - FirstVertexTemp, - FirstVertexColor.X, FirstVertexColor.Y, FirstVertexColor.Z); - }, EDynamicMeshChangeType::GeneralEdit, EDynamicMeshAttributeChangeFlags::Unknown, false); + // 创建 FGeometryScriptColorList 并关联颜色数组 + FGeometryScriptColorList ColorList; + ColorList.List = MakeShared>(MoveTemp(VertexColors)); + + // 使用 GeometryScript 设置顶点颜色 + UGeometryScriptLibrary_MeshVertexColorFunctions::SetMeshPerVertexColors( + DynMesh, + ColorList + ); + + UE_LOG(LogTemp, Warning, TEXT("=== UpdateVertexColors Debug Info ===")); + UE_LOG(LogTemp, Warning, TEXT(" Total vertices: %d"), VertexCount); + UE_LOG(LogTemp, Warning, TEXT(" Temperature range: %.1f°C - %.1f°C"), MinTemp, MaxTemp); + UE_LOG(LogTemp, Warning, TEXT(" First vertex: Pos=(%.1f, %.1f, %.1f), Temp=%.1f°C, Color=(%.3f, %.3f, %.3f)"), + FirstVertexPos.X, FirstVertexPos.Y, FirstVertexPos.Z, + FirstVertexTemp, + FirstVertexColor.R, FirstVertexColor.G, FirstVertexColor.B); // 通知组件网格已更新 DynMeshComp->NotifyMeshUpdated();