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EM_Task/UnrealEd/Private/EditorExporters.cpp
Boshuang Zhao 5144a49c9b add
2026-02-13 16:18:33 +08:00

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// Copyright Epic Games, Inc. All Rights Reserved.
/*=============================================================================
EditorExporters.cpp: Editor exporters.
=============================================================================*/
#include "CoreMinimal.h"
#include "Misc/MessageDialog.h"
#include "HAL/FileManager.h"
#include "Misc/FileHelper.h"
#include "Misc/Paths.h"
#include "Misc/OutputDeviceFile.h"
#include "UObject/Object.h"
#include "UObject/UObjectIterator.h"
#include "Misc/TextBuffer.h"
#include "UObject/Package.h"
#include "Engine/EngineTypes.h"
#include "Engine/MaterialMerging.h"
#include "GameFramework/Actor.h"
#include "SceneTypes.h"
#include "RawIndexBuffer.h"
#include "RenderingThread.h"
#include "AI/NavigationSystemBase.h"
#include "Model.h"
#include "Exporters/Exporter.h"
#include "Exporters/AnimSequenceExporterFBX.h"
#include "Engine/SkeletalMesh.h"
#include "Animation/AnimSequence.h"
#include "Editor/EditorEngine.h"
#include "Exporters/ExportTextContainer.h"
#include "Editor/GroupActor.h"
#include "Exporters/LevelExporterFBX.h"
#include "Exporters/LevelExporterLOD.h"
#include "Exporters/LevelExporterOBJ.h"
#include "Exporters/LevelExporterSTL.h"
#include "Exporters/LevelExporterT3D.h"
#include "Exporters/ModelExporterT3D.h"
#include "Exporters/ObjectExporterT3D.h"
#include "Exporters/PolysExporterOBJ.h"
#include "Exporters/PolysExporterT3D.h"
#include "Exporters/SequenceExporterT3D.h"
#include "Exporters/SkeletalMeshExporterFBX.h"
#include "Exporters/SoundExporterOGG.h"
#include "Exporters/SoundExporterWAV.h"
#include "Exporters/SoundSurroundExporterWAV.h"
#include "Exporters/StaticMeshExporterFBX.h"
#include "Exporters/StaticMeshExporterOBJ.h"
#include "Exporters/TextBufferExporterTXT.h"
#include "Exporters/FbxExportOption.h"
#include "Engine/StaticMesh.h"
#include "Sound/SoundWave.h"
#include "Engine/StaticMeshActor.h"
#include "Engine/BlueprintGeneratedClass.h"
#include "Engine/Polys.h"
#include "Misc/FeedbackContext.h"
#include "UObject/PropertyPortFlags.h"
#include "GameFramework/PhysicsVolume.h"
#include "EngineUtils.h"
#include "Editor.h"
#include "MatineeExporter.h"
#include "FbxExporter.h"
#include "StaticMeshAttributes.h"
#include "StaticMeshOperations.h"
#include "MaterialUtilities.h"
#include "InstancedFoliageActor.h"
#include "LandscapeProxy.h"
#include "Landscape.h"
#include "LandscapeInfo.h"
#include "LandscapeComponent.h"
#include "LandscapeDataAccess.h"
#include "UnrealExporter.h"
#include "InstancedFoliage.h"
#include "Engine/Selection.h"
#include "AssetExportTask.h"
#include "Components/SkeletalMeshComponent.h"
#include "Camera/CameraComponent.h"
#include "Components/LightComponent.h"
#include "Particles/Emitter.h"
#include "Engine/Brush.h"
#include "Components/BrushComponent.h"
#include "Misc/App.h"
#include "Widgets/Notifications/SNotificationList.h"
#include "Framework/Notifications/NotificationManager.h"
DEFINE_LOG_CATEGORY_STATIC(LogEditorExporters, Log, All);
/*------------------------------------------------------------------------------
UTextBufferExporterTXT implementation.
------------------------------------------------------------------------------*/
UTextBufferExporterTXT::UTextBufferExporterTXT(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UTextBuffer::StaticClass();
FormatExtension.Add(TEXT("TXT"));
PreferredFormatIndex = 0;
FormatDescription.Add(TEXT("Text file"));
bText = true;
}
bool UTextBufferExporterTXT::ExportText(const FExportObjectInnerContext* Context, UObject* Object, const TCHAR* Type, FOutputDevice& Ar, FFeedbackContext* Warn, uint32 PortFlags)
{
UTextBuffer* TextBuffer = CastChecked<UTextBuffer>(Object);
FString Str(TextBuffer->GetText());
TCHAR* Start = const_cast<TCHAR*>(*Str);
TCHAR* End = Start + Str.Len();
while (Start < End && (Start[0] == '\r' || Start[0] == '\n' || Start[0] == ' '))
Start++;
while (End > Start && (End[-1] == '\r' || End[-1] == '\n' || End[-1] == ' '))
End--;
*End = 0;
Ar.Log(Start);
return 1;
}
/*------------------------------------------------------------------------------
USoundExporterWAV implementation.
------------------------------------------------------------------------------*/
USoundExporterWAV::USoundExporterWAV(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = USoundWave::StaticClass();
bText = false;
FormatDescription.Add(TEXT("Sound"));
FormatExtension.Add(TEXT("WAV"));
}
bool USoundExporterWAV::SupportsObject(UObject* Object) const
{
bool bSupportsObject = false;
if (Super::SupportsObject(Object))
{
USoundWave* SoundWave = CastChecked<USoundWave>(Object);
bSupportsObject = (SoundWave->NumChannels <= 2);
}
return bSupportsObject;
}
bool USoundExporterWAV::ExportBinary(UObject* Object, const TCHAR* Type, FArchive& Ar, FFeedbackContext* Warn, int32 FileIndex, uint32 PortFlags)
{
USoundWave* Sound = CastChecked<USoundWave>(Object);
void* RawWaveData = Sound->RawData.Lock(LOCK_READ_ONLY);
Ar.Serialize(RawWaveData, Sound->RawData.GetBulkDataSize());
Sound->RawData.Unlock();
return true;
}
/*------------------------------------------------------------------------------
USoundExporterOGG implementation.
------------------------------------------------------------------------------*/
USoundExporterOGG::USoundExporterOGG(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = USoundWave::StaticClass();
bText = false;
FormatDescription.Add(TEXT("Sound"));
FormatExtension.Add(TEXT("OGG"));
}
bool USoundExporterOGG::SupportsObject(UObject* Object) const
{
bool bSupportsObject = false;
if (Super::SupportsObject(Object))
{
USoundWave* SoundWave = CastChecked<USoundWave>(Object);
bSupportsObject = (SoundWave->GetCompressedData("OGG") != NULL);
}
return bSupportsObject;
}
bool USoundExporterOGG::ExportBinary(UObject* Object, const TCHAR* Type, FArchive& Ar, FFeedbackContext* Warn, int32 FileIndex, uint32 PortFlags)
{
USoundWave* Sound = CastChecked<USoundWave>(Object);
FByteBulkData* Bulk = Sound->GetCompressedData("OGG");
if (Bulk)
{
Ar.Serialize(Bulk->Lock(LOCK_READ_ONLY), Bulk->GetBulkDataSize());
Bulk->Unlock();
return true;
}
return false;
}
/*------------------------------------------------------------------------------
USoundSurroundExporterWAV implementation.
------------------------------------------------------------------------------*/
USoundSurroundExporterWAV::USoundSurroundExporterWAV(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = USoundWave::StaticClass();
bText = false;
FormatExtension.Add(TEXT("WAV"));
FormatDescription.Add(TEXT("Multichannel Sound"));
}
bool USoundSurroundExporterWAV::SupportsObject(UObject* Object) const
{
bool bSupportsObject = false;
if (Super::SupportsObject(Object))
{
USoundWave* SoundWave = CastChecked<USoundWave>(Object);
bSupportsObject = (SoundWave->NumChannels > 2);
}
return bSupportsObject;
}
int32 USoundSurroundExporterWAV::GetFileCount(UObject* Object) const
{
return (SPEAKER_Count);
}
FString USoundSurroundExporterWAV::GetUniqueFilename(const TCHAR* Filename, int32 FileIndex, int32 FileCount)
{
static FString SpeakerLocations[SPEAKER_Count] =
{
TEXT("_fl"), // SPEAKER_FrontLeft
TEXT("_fr"), // SPEAKER_FrontRight
TEXT("_fc"), // SPEAKER_FrontCenter
TEXT("_lf"), // SPEAKER_LowFrequency
TEXT("_sl"), // SPEAKER_SideLeft
TEXT("_sr"), // SPEAKER_SideRight
TEXT("_bl"), // SPEAKER_BackLeft
TEXT("_br") // SPEAKER_BackRight
};
FString ReturnName = FPaths::GetBaseFilename(Filename, false) + SpeakerLocations[FileIndex] + FString(".WAV");
return (ReturnName);
}
bool USoundSurroundExporterWAV::ExportBinary(UObject* Object, const TCHAR* Type, FArchive& Ar, FFeedbackContext* Warn, int32 FileIndex, uint32 PortFlags)
{
bool bResult = false;
USoundWave* Sound = CastChecked<USoundWave>(Object);
if (Sound->ChannelSizes.Num() > 0)
{
uint8* RawWaveData = (uint8*)Sound->RawData.Lock(LOCK_READ_ONLY);
if (Sound->ChannelSizes[FileIndex])
{
Ar.Serialize(RawWaveData + Sound->ChannelOffsets[FileIndex], Sound->ChannelSizes[FileIndex]);
}
Sound->RawData.Unlock();
bResult = Sound->ChannelSizes[FileIndex] != 0;
}
return bResult;
}
/*------------------------------------------------------------------------------
UObjectExporterT3D implementation.
------------------------------------------------------------------------------*/
UObjectExporterT3D::UObjectExporterT3D(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UObject::StaticClass();
bText = true;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("T3D"));
FormatExtension.Add(TEXT("COPY"));
FormatDescription.Add(TEXT("Unreal object text"));
FormatDescription.Add(TEXT("Unreal object text"));
}
bool UObjectExporterT3D::ExportText(const FExportObjectInnerContext* Context, UObject* Object, const TCHAR* Type, FOutputDevice& Ar, FFeedbackContext* Warn, uint32 PortFlags)
{
EmitBeginObject(Ar, Object, PortFlags);
ExportObjectInner(Context, Object, Ar, PortFlags);
EmitEndObject(Ar);
return true;
}
/*------------------------------------------------------------------------------
UPolysExporterT3D implementation.
------------------------------------------------------------------------------*/
UPolysExporterT3D::UPolysExporterT3D(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UPolys::StaticClass();
bText = true;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("T3D"));
FormatDescription.Add(TEXT("Unreal poly text"));
}
bool UPolysExporterT3D::ExportText(const FExportObjectInnerContext* Context, UObject* Object, const TCHAR* Type, FOutputDevice& Ar, FFeedbackContext* Warn, uint32 PortFlags)
{
UPolys* Polys = CastChecked<UPolys>(Object);
Ar.Logf(TEXT("%sBegin PolyList\r\n"), FCString::Spc(TextIndent));
for (int32 i = 0; i < Polys->Element.Num(); i++)
{
FPoly* Poly = &Polys->Element[i];
TCHAR TempStr[MAX_SPRINTF] = TEXT("");
// Start of polygon plus group/item name if applicable.
// The default values need to jive FPoly::Init().
Ar.Logf(TEXT("%s Begin Polygon"), FCString::Spc(TextIndent));
if (Poly->ItemName != NAME_None)
{
Ar.Logf(TEXT(" Item=%s"), *Poly->ItemName.ToString());
}
if (Poly->Material)
{
Ar.Logf(TEXT(" Texture=%s"), *Poly->Material->GetPathName());
}
if (Poly->PolyFlags != 0)
{
Ar.Logf(TEXT(" Flags=%i"), Poly->PolyFlags);
}
if (Poly->iLink != INDEX_NONE)
{
Ar.Logf(TEXT(" Link=%i"), Poly->iLink);
}
if (Poly->LightMapScale != 32.0f)
{
Ar.Logf(TEXT(" LightMapScale=%f"), Poly->LightMapScale);
}
Ar.Logf(TEXT("\r\n"));
// All coordinates.
Ar.Logf(TEXT("%s Origin %s\r\n"), FCString::Spc(TextIndent), SetFVECTOR(TempStr, &Poly->Base));
Ar.Logf(TEXT("%s Normal %s\r\n"), FCString::Spc(TextIndent), SetFVECTOR(TempStr, &Poly->Normal));
Ar.Logf(TEXT("%s TextureU %s\r\n"), FCString::Spc(TextIndent), SetFVECTOR(TempStr, &Poly->TextureU));
Ar.Logf(TEXT("%s TextureV %s\r\n"), FCString::Spc(TextIndent), SetFVECTOR(TempStr, &Poly->TextureV));
for (int32 j = 0; j < Poly->Vertices.Num(); j++)
{
Ar.Logf(TEXT("%s Vertex %s\r\n"), FCString::Spc(TextIndent), SetFVECTOR(TempStr, &Poly->Vertices[j]));
}
Ar.Logf(TEXT("%s End Polygon\r\n"), FCString::Spc(TextIndent));
}
Ar.Logf(TEXT("%sEnd PolyList\r\n"), FCString::Spc(TextIndent));
return 1;
}
/*------------------------------------------------------------------------------
UModelExporterT3D implementation.
------------------------------------------------------------------------------*/
UModelExporterT3D::UModelExporterT3D(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UModel::StaticClass();
bText = true;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("T3D"));
FormatExtension.Add(TEXT("COPY"));
FormatDescription.Add(TEXT("Unreal model text"));
FormatDescription.Add(TEXT("Unreal model text"));
}
bool UModelExporterT3D::ExportText(const FExportObjectInnerContext* Context, UObject* Object, const TCHAR* Type, FOutputDevice& Ar, FFeedbackContext* Warn, uint32 PortFlags)
{
UModel* Model = CastChecked<UModel>(Object);
Ar.Logf(TEXT("%sBegin Brush Name=%s\r\n"), FCString::Spc(TextIndent), *Model->GetName());
if (!(PortFlags & PPF_SeparateDeclare))
{
UExporter::ExportToOutputDevice(Context, Model->Polys, NULL, Ar, Type, TextIndent + 3, PortFlags);
}
Ar.Logf(TEXT("%sEnd Brush\r\n"), FCString::Spc(TextIndent));
return 1;
}
/*------------------------------------------------------------------------------
ULevelExporterT3D implementation.
------------------------------------------------------------------------------*/
void ExporterHelper_DumpPackageInners(const FExportObjectInnerContext* Context, UPackage* InPackage, int32 TabCount)
{
const TArray<UObject*>* Inners = Context->GetObjectInners(InPackage);
if (Inners)
{
for (int32 InnerIndex = 0; InnerIndex < Inners->Num(); InnerIndex++)
{
UObject* InnerObj = (*Inners)[InnerIndex];
FString TabString;
for (int32 TabOutIndex = 0; TabOutIndex < TabCount; TabOutIndex++)
{
TabString += TEXT("\t");
}
UE_LOG(LogEditorExporters, Log, TEXT("%s%s : %s (%s)"), *TabString,
InnerObj ? *InnerObj->GetClass()->GetName() : TEXT("*NULL*"),
InnerObj ? *InnerObj->GetName() : TEXT("*NULL*"),
InnerObj ? *InnerObj->GetPathName() : TEXT("*NULL*"));
UPackage* InnerPackage = Cast<UPackage>(InnerObj);
if (InnerPackage)
{
TabCount++;
ExporterHelper_DumpPackageInners(Context, InnerPackage, TabCount);
TabCount--;
}
}
}
}
ULevelExporterT3D::ULevelExporterT3D(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UWorld::StaticClass();
bText = true;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("T3D"));
FormatExtension.Add(TEXT("COPY"));
FormatDescription.Add(TEXT("Unreal world text"));
FormatDescription.Add(TEXT("Unreal world text"));
}
bool ULevelExporterT3D::ExportText(const FExportObjectInnerContext* Context, UObject* Object, const TCHAR* Type, FOutputDevice& Ar, FFeedbackContext* Warn, uint32 PortFlags)
{
UWorld* World = CastChecked<UWorld>(Object);
APhysicsVolume* DefaultPhysicsVolume = World->GetDefaultPhysicsVolume();
UnMarkAllObjects(EObjectMark(OBJECTMARK_TagExp | OBJECTMARK_TagImp));
UPackage* MapPackage = NULL;
if ((PortFlags & PPF_Copy) == 0)
{
// If we are not copying to clipboard, then export objects contained in the map package itself...
MapPackage = Object->GetOutermost();
}
// this is the top level in the .t3d file
if (MapPackage)
{
Ar.Logf(TEXT("%sBegin Map Name=%s\r\n"), FCString::Spc(TextIndent), *(MapPackage->GetName()));
}
else
{
Ar.Logf(TEXT("%sBegin Map\r\n"), FCString::Spc(TextIndent));
}
// are we exporting all actors or just selected actors?
bool bAllActors = FCString::Stricmp(Type, TEXT("COPY")) != 0 && !bSelectedOnly;
TextIndent += 3;
ULevel* Level;
// start a new level section
if (FCString::Stricmp(Type, TEXT("COPY")) == 0)
{
// for copy and paste, we want to select actors in the current level
Level = World->GetCurrentLevel();
// if we are copy/pasting, then we don't name the level - we paste into the current level
Ar.Logf(TEXT("%sBegin Level\r\n"), FCString::Spc(TextIndent));
// mark that we are doing a clipboard copy
PortFlags |= PPF_Copy;
}
else
{
// for export, we only want the persistent level
Level = World->PersistentLevel;
//@todo seamless if we are exporting only selected, should we export from all levels? or maybe from the current level?
// if we aren't copy/pasting, then we name the level so that when we import, we get the same level structure
Ar.Logf(TEXT("%sBegin Level NAME=%s\r\n"), FCString::Spc(TextIndent), *Level->GetName());
}
TextIndent += 3;
auto LevelActors = Level->Actors;
// if (PortFlags & PPF_ForceSortedObject)
//{
// LevelActors.Sort([](const AActor& A, const AActor& B)
// {
// return A.GetActorLabel() < B.GetActorLabel();
// });
// }
// loop through all of the actors just in this level
for (AActor* Actor: LevelActors)
{
// Don't export the default physics volume, as it doesn't have a UModel associated with it
// and thus will not import properly.
if (Actor == DefaultPhysicsVolume)
{
continue;
}
// Ensure actor is not a group if grouping is disabled and that the actor is currently selected
if (Actor && !Actor->IsA(AGroupActor::StaticClass()) &&
(bAllActors || Actor->IsSelected()))
{
if (Actor->ShouldExport())
{
// Temporarily unbind dynamic delegates so we don't export the bindings.
UBlueprintGeneratedClass::UnbindDynamicDelegates(Actor->GetClass(), Actor);
AActor* ParentActor = Actor->GetAttachParentActor();
FName SocketName = Actor->GetAttachParentSocketName();
FVector RelativeLocation = Actor->GetRootComponent()->GetRelativeLocation();
FRotator RelativeRotation = Actor->GetRootComponent()->GetRelativeRotation();
// UE_LOG(LogTemp, Log, TEXT("TTTTTTT %s %s"),*RelativeLocation.ToString(), *RelativeRotation.ToString());
Actor->DetachFromActor(FDetachmentTransformRules::KeepWorldTransform);
FString ParentActorString = (ParentActor ? FString::Printf(TEXT(" ParentActor=%s"), *ParentActor->GetName()) : TEXT(""));
FString SocketNameString = ((ParentActor && SocketName != NAME_None) ? FString::Printf(TEXT(" SocketName=%s"), *SocketName.ToString()) : TEXT(""));
FString GroupActor = (Actor->GroupActor ? FString::Printf(TEXT(" GroupActor=%s"), *Actor->GroupActor->GetName()) : TEXT(""));
Ar.Logf(TEXT("%sBegin Actor Class=%s Name=%s Archetype=%s'%s'%s%s%s") LINE_TERMINATOR,
FCString::Spc(TextIndent), *Actor->GetClass()->GetPathName(), *Actor->GetName(),
*Actor->GetArchetype()->GetClass()->GetPathName(), *Actor->GetArchetype()->GetPathName(), *ParentActorString, *SocketNameString, *GroupActor);
if (PortFlags & PPF_ForceSortedObject)
{
Actor->GetRootComponent()->SetRelativeLocation_Direct(RelativeLocation);
Actor->GetRootComponent()->SetRelativeRotation_Direct(RelativeRotation);
}
ExportRootScope = Actor;
ExportObjectInner(Context, Actor, Ar, PortFlags | PPF_ExportsNotFullyQualified);
ExportRootScope = nullptr;
Ar.Logf(TEXT("%sEnd Actor\r\n"), FCString::Spc(TextIndent));
Actor->AttachToActor(ParentActor, FAttachmentTransformRules::KeepWorldTransform, SocketName);
Actor->GetRootComponent()->SetRelativeLocation_Direct(RelativeLocation);
Actor->GetRootComponent()->SetRelativeRotation_Direct(RelativeRotation);
// Restore dynamic delegate bindings.
UBlueprintGeneratedClass::BindDynamicDelegates(Actor->GetClass(), Actor);
}
else if (GEditor)
{
GEditor->GetSelectedActors()->Deselect(Actor);
}
}
}
TextIndent -= 3;
Ar.Logf(TEXT("%sEnd Level\r\n"), FCString::Spc(TextIndent));
TextIndent -= 3;
// Export information about the first selected surface in the map. Used for copying/pasting
// information from poly to poly.
Ar.Logf(TEXT("%sBegin Surface\r\n"), FCString::Spc(TextIndent));
TCHAR TempStr[256];
const UModel* Model = World->GetModel();
for (const FBspSurf& Poly: Model->Surfs)
{
if (Poly.PolyFlags & PF_Selected)
{
Ar.Logf(TEXT("%sTEXTURE=%s\r\n"), FCString::Spc(TextIndent + 3), *Poly.Material->GetPathName());
Ar.Logf(TEXT("%sBASE %s\r\n"), FCString::Spc(TextIndent + 3), SetFVECTOR(TempStr, &(Model->Points[Poly.pBase])));
Ar.Logf(TEXT("%sTEXTUREU %s\r\n"), FCString::Spc(TextIndent + 3), SetFVECTOR(TempStr, &(Model->Vectors[Poly.vTextureU])));
Ar.Logf(TEXT("%sTEXTUREV %s\r\n"), FCString::Spc(TextIndent + 3), SetFVECTOR(TempStr, &(Model->Vectors[Poly.vTextureV])));
Ar.Logf(TEXT("%sNORMAL %s\r\n"), FCString::Spc(TextIndent + 3), SetFVECTOR(TempStr, &(Model->Vectors[Poly.vNormal])));
Ar.Logf(TEXT("%sPOLYFLAGS=%d\r\n"), FCString::Spc(TextIndent + 3), Poly.PolyFlags);
break;
}
}
Ar.Logf(TEXT("%sEnd Surface\r\n"), FCString::Spc(TextIndent));
Ar.Logf(TEXT("%sEnd Map\r\n"), FCString::Spc(TextIndent));
return 1;
}
void ULevelExporterT3D::ExportComponentExtra(const FExportObjectInnerContext* Context, const TArray<UActorComponent*>& Components, FOutputDevice& Ar, uint32 PortFlags)
{
for (UActorComponent* ActorComponent: Components)
{
if (ActorComponent != nullptr && ActorComponent->GetWorld() != nullptr)
{
// Go through all FoliageActors in the world, since we support cross-level bases
for (TActorIterator<AInstancedFoliageActor> It(ActorComponent->GetWorld()); It; ++It)
{
AInstancedFoliageActor* IFA = *It;
if (!IFA->IsPendingKill())
{
auto FoliageInstanceMap = IFA->GetInstancesForComponent(ActorComponent);
for (const auto& MapEntry: FoliageInstanceMap)
{
Ar.Logf(TEXT("%sBegin Foliage FoliageType=%s Component=%s%s"), FCString::Spc(TextIndent), *MapEntry.Key->GetPathName(), *ActorComponent->GetName(), LINE_TERMINATOR);
for (const FFoliageInstancePlacementInfo* Inst: MapEntry.Value)
{
Ar.Logf(TEXT("%sLocation=%f,%f,%f Rotation=%f,%f,%f PreAlignRotation=%f,%f,%f DrawScale3D=%f,%f,%f Flags=%u%s"), FCString::Spc(TextIndent + 3),
Inst->Location.X, Inst->Location.Y, Inst->Location.Z,
Inst->Rotation.Pitch, Inst->Rotation.Yaw, Inst->Rotation.Roll,
Inst->PreAlignRotation.Pitch, Inst->PreAlignRotation.Yaw, Inst->PreAlignRotation.Roll,
Inst->DrawScale3D.X, Inst->DrawScale3D.Y, Inst->DrawScale3D.Z,
Inst->Flags,
LINE_TERMINATOR);
}
Ar.Logf(TEXT("%sEnd Foliage%s"), FCString::Spc(TextIndent), LINE_TERMINATOR);
}
}
}
}
}
}
void ULevelExporterT3D::ExportPackageObject(FExportPackageParams& ExpPackageParams) {}
void ULevelExporterT3D::ExportPackageInners(FExportPackageParams& ExpPackageParams) {}
/*------------------------------------------------------------------------------
ULevelExporterSTL implementation.
------------------------------------------------------------------------------*/
ULevelExporterSTL::ULevelExporterSTL(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UWorld::StaticClass();
bText = true;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("STL"));
FormatDescription.Add(TEXT("Stereolithography"));
}
bool ULevelExporterSTL::ExportText(const FExportObjectInnerContext* Context, UObject* Object, const TCHAR* Type, FOutputDevice& Ar, FFeedbackContext* Warn, uint32 PortFlags)
{
//@todo seamless - this needs to be world, like the t3d version above
UWorld* World = CastChecked<UWorld>(Object);
ULevel* Level = World->PersistentLevel;
for (FThreadSafeObjectIterator It; It; ++It)
{
It->UnMark(EObjectMark(OBJECTMARK_TagImp | OBJECTMARK_TagExp));
}
//
// GATHER TRIANGLES
//
TArray<FVector> Triangles;
for (int32 iActor = 0; iActor < Level->Actors.Num(); iActor++)
{
// Landscape
ALandscape* Landscape = Cast<ALandscape>(Level->Actors[iActor]);
if (Landscape && (!bSelectedOnly || Landscape->IsSelected()))
{
ULandscapeInfo* LandscapeInfo = Landscape ? Landscape->GetLandscapeInfo() : NULL;
if (Landscape && LandscapeInfo)
{
auto SelectedComponents = LandscapeInfo->GetSelectedComponents();
// Export data for each component
for (auto It = LandscapeInfo->XYtoComponentMap.CreateIterator(); It; ++It)
{
if (bSelectedOnly && SelectedComponents.Num() && !SelectedComponents.Contains(It.Value()))
{
continue;
}
ULandscapeComponent* Component = It.Value();
FLandscapeComponentDataInterface CDI(Component);
for (int32 y = 0; y < Component->ComponentSizeQuads; y++)
{
for (int32 x = 0; x < Component->ComponentSizeQuads; x++)
{
FVector P00 = CDI.GetWorldVertex(x, y);
FVector P01 = CDI.GetWorldVertex(x, y + 1);
FVector P11 = CDI.GetWorldVertex(x + 1, y + 1);
FVector P10 = CDI.GetWorldVertex(x + 1, y);
// triangulation matches FLandscapeIndexBuffer constructor
Triangles.Add(P00);
Triangles.Add(P11);
Triangles.Add(P10);
Triangles.Add(P00);
Triangles.Add(P01);
Triangles.Add(P11);
}
}
}
}
}
// Static meshes
AStaticMeshActor* Actor = Cast<AStaticMeshActor>(Level->Actors[iActor]);
if (Actor && (!bSelectedOnly || Actor->IsSelected()) && Actor->GetStaticMeshComponent()->GetStaticMesh() && Actor->GetStaticMeshComponent()->GetStaticMesh()->HasValidRenderData())
{
FStaticMeshLODResources& LODModel = Actor->GetStaticMeshComponent()->GetStaticMesh()->GetRenderData()->LODResources[0];
FIndexArrayView Indices = LODModel.IndexBuffer.GetArrayView();
int32 NumSections = LODModel.Sections.Num();
for (int32 SectionIndex = 0; SectionIndex < NumSections; ++SectionIndex)
{
const FStaticMeshSection& Section = LODModel.Sections[SectionIndex];
for (int32 TriIndex = 0; TriIndex < (int32)Section.NumTriangles; ++TriIndex)
{
int32 BaseIndex = Section.FirstIndex + TriIndex * 3;
for (int32 v = 2; v > -1; v--)
{
int32 i = Indices[BaseIndex + v];
FVector vtx = Actor->ActorToWorld().TransformPosition(LODModel.VertexBuffers.PositionVertexBuffer.VertexPosition(i));
Triangles.Add(vtx);
}
}
}
}
}
// BSP Surfaces
for (int32 i = 0; i < World->GetModel()->Nodes.Num(); i++)
{
FBspNode* Node = &World->GetModel()->Nodes[i];
if (!bSelectedOnly || World->GetModel()->Surfs[Node->iSurf].PolyFlags & PF_Selected)
{
if (Node->NumVertices > 2)
{
FVector vtx1(World->GetModel()->Points[World->GetModel()->Verts[Node->iVertPool + 0].pVertex]),
vtx2(World->GetModel()->Points[World->GetModel()->Verts[Node->iVertPool + 1].pVertex]),
vtx3;
for (int32 v = 2; v < Node->NumVertices; v++)
{
vtx3 = World->GetModel()->Points[World->GetModel()->Verts[Node->iVertPool + v].pVertex];
Triangles.Add(vtx1);
Triangles.Add(vtx2);
Triangles.Add(vtx3);
vtx2 = vtx3;
}
}
}
}
//
// WRITE THE FILE
//
Ar.Logf(TEXT("%ssolid LevelBSP\r\n"), FCString::Spc(TextIndent));
for (int32 tri = 0; tri < Triangles.Num(); tri += 3)
{
FVector vtx[3];
vtx[0] = Triangles[tri] * FVector(1, -1, 1);
vtx[1] = Triangles[tri + 1] * FVector(1, -1, 1);
vtx[2] = Triangles[tri + 2] * FVector(1, -1, 1);
FPlane Normal(vtx[0], vtx[1], vtx[2]);
Ar.Logf(TEXT("%sfacet normal %1.6f %1.6f %1.6f\r\n"), FCString::Spc(TextIndent + 2), Normal.X, Normal.Y, Normal.Z);
Ar.Logf(TEXT("%souter loop\r\n"), FCString::Spc(TextIndent + 4));
Ar.Logf(TEXT("%svertex %1.6f %1.6f %1.6f\r\n"), FCString::Spc(TextIndent + 6), vtx[0].X, vtx[0].Y, vtx[0].Z);
Ar.Logf(TEXT("%svertex %1.6f %1.6f %1.6f\r\n"), FCString::Spc(TextIndent + 6), vtx[1].X, vtx[1].Y, vtx[1].Z);
Ar.Logf(TEXT("%svertex %1.6f %1.6f %1.6f\r\n"), FCString::Spc(TextIndent + 6), vtx[2].X, vtx[2].Y, vtx[2].Z);
Ar.Logf(TEXT("%sendloop\r\n"), FCString::Spc(TextIndent + 4));
Ar.Logf(TEXT("%sendfacet\r\n"), FCString::Spc(TextIndent + 2));
}
Ar.Logf(TEXT("%sendsolid LevelBSP\r\n"), FCString::Spc(TextIndent));
Triangles.Empty();
return 1;
}
/*------------------------------------------------------------------------------
Helper classes for the OBJ exporters.
------------------------------------------------------------------------------*/
// An individual face.
class FOBJFace
{
public:
// index into FOBJGeom::VertexData (local within FOBJGeom)
uint32 VertexIndex[3];
/** List of vertices that make up this face. */
/** The material that was applied to this face. */
UMaterialInterface* Material;
};
class FOBJVertex
{
public:
// position
FVector Vert;
// texture coordiante
FVector2D UV;
// normal
FVector Normal;
// FLinearColor Colors[3];
};
// A geometric object. This will show up as a separate object when imported into a modeling program.
class FOBJGeom
{
public:
/** List of faces that make up this object. */
TArray<FOBJFace> Faces;
/** Vertex positions that make up this object. */
TArray<FOBJVertex> VertexData;
/** Name used when writing this object to the OBJ file. */
FString Name;
// Constructors.
FORCEINLINE FOBJGeom(const FString& InName)
: Name(InName)
{}
};
inline FString FixupMaterialName(UMaterialInterface* Material)
{
return Material->GetPathName().Replace(TEXT("."), TEXT("_")).Replace(TEXT(":"), TEXT("_"));
}
/**
* Adds the given actor's mesh to the GOBJObjects array if possible
*
* @param Actor The actor to export
* @param Objects The array that contains cached exportable object data
* @param Materials Optional set of materials to gather all used materials by the objects (currently only StaticMesh materials are supported)
*/
static void AddActorToOBJs(AActor* Actor, TArray<FOBJGeom*>& Objects, TSet<UMaterialInterface*>* Materials, bool bSelectedOnly)
{
FMatrix LocalToWorld = Actor->ActorToWorld().ToMatrixWithScale();
// Landscape
ALandscape* Landscape = Cast<ALandscape>(Actor);
ULandscapeInfo* LandscapeInfo = Landscape ? Landscape->GetLandscapeInfo() : NULL;
if (Landscape && LandscapeInfo)
{
auto SelectedComponents = LandscapeInfo->GetSelectedComponents();
// Export data for each component
for (auto It = Landscape->GetLandscapeInfo()->XYtoComponentMap.CreateIterator(); It; ++It)
{
if (bSelectedOnly && SelectedComponents.Num() && !SelectedComponents.Contains(It.Value()))
{
continue;
}
ULandscapeComponent* Component = It.Value();
FLandscapeComponentDataInterface CDI(Component, Landscape->ExportLOD);
const int32 ComponentSizeQuads = ((Component->ComponentSizeQuads + 1) >> Landscape->ExportLOD) - 1;
const int32 SubsectionSizeQuads = ((Component->SubsectionSizeQuads + 1) >> Landscape->ExportLOD) - 1;
const float ScaleFactor = (float)Component->ComponentSizeQuads / (float)ComponentSizeQuads;
FOBJGeom* OBJGeom = new FOBJGeom(Component->GetName());
OBJGeom->VertexData.AddZeroed(FMath::Square(ComponentSizeQuads + 1));
OBJGeom->Faces.AddZeroed(FMath::Square(ComponentSizeQuads) * 2);
// Check if there are any holes
TArray64<uint8> RawVisData;
uint8* VisDataMap = NULL;
int32 TexIndex = INDEX_NONE;
int32 WeightMapSize = (SubsectionSizeQuads + 1) * Component->NumSubsections;
int32 ChannelOffsets[4] = {(int32)STRUCT_OFFSET(FColor, R), (int32)STRUCT_OFFSET(FColor, G), (int32)STRUCT_OFFSET(FColor, B), (int32)STRUCT_OFFSET(FColor, A)};
TArray<FWeightmapLayerAllocationInfo>& ComponentWeightmapLayerAllocations = Component->GetWeightmapLayerAllocations();
TArray<UTexture2D*>& ComponentWeightmapTextures = Component->GetWeightmapTextures();
for (int32 AllocIdx = 0; AllocIdx < ComponentWeightmapLayerAllocations.Num(); AllocIdx++)
{
FWeightmapLayerAllocationInfo& AllocInfo = ComponentWeightmapLayerAllocations[AllocIdx];
if (AllocInfo.LayerInfo == ALandscapeProxy::VisibilityLayer)
{
TexIndex = AllocInfo.WeightmapTextureIndex;
ComponentWeightmapTextures[TexIndex]->Source.GetMipData(RawVisData, 0);
VisDataMap = RawVisData.GetData() + ChannelOffsets[AllocInfo.WeightmapTextureChannel];
}
}
// Export verts
FOBJVertex* Vert = OBJGeom->VertexData.GetData();
for (int32 y = 0; y < ComponentSizeQuads + 1; y++)
{
for (int32 x = 0; x < ComponentSizeQuads + 1; x++)
{
FVector WorldPos, WorldTangentX, WorldTangentY, WorldTangentZ;
CDI.GetWorldPositionTangents(x, y, WorldPos, WorldTangentX, WorldTangentY, WorldTangentZ);
Vert->Vert = WorldPos;
Vert->UV = FVector2D(Component->GetSectionBase().X + x * ScaleFactor, Component->GetSectionBase().Y + y * ScaleFactor);
Vert->Normal = WorldTangentZ;
Vert++;
}
}
int32 VisThreshold = 170;
int32 SubNumX, SubNumY, SubX, SubY;
FOBJFace* Face = OBJGeom->Faces.GetData();
for (int32 y = 0; y < ComponentSizeQuads; y++)
{
for (int32 x = 0; x < ComponentSizeQuads; x++)
{
CDI.ComponentXYToSubsectionXY(x, y, SubNumX, SubNumY, SubX, SubY);
int32 WeightIndex = SubX + SubNumX * (SubsectionSizeQuads + 1) + (SubY + SubNumY * (SubsectionSizeQuads + 1)) * WeightMapSize;
bool bInvisible = VisDataMap && VisDataMap[WeightIndex * sizeof(FColor)] >= VisThreshold;
// triangulation matches FLandscapeIndexBuffer constructor
Face->VertexIndex[0] = (x + 0) + (y + 0) * (ComponentSizeQuads + 1);
Face->VertexIndex[1] = bInvisible ? Face->VertexIndex[0] : (x + 1) + (y + 1) * (ComponentSizeQuads + 1);
Face->VertexIndex[2] = bInvisible ? Face->VertexIndex[0] : (x + 1) + (y + 0) * (ComponentSizeQuads + 1);
Face++;
Face->VertexIndex[0] = (x + 0) + (y + 0) * (ComponentSizeQuads + 1);
Face->VertexIndex[1] = bInvisible ? Face->VertexIndex[0] : (x + 0) + (y + 1) * (ComponentSizeQuads + 1);
Face->VertexIndex[2] = bInvisible ? Face->VertexIndex[0] : (x + 1) + (y + 1) * (ComponentSizeQuads + 1);
Face++;
}
}
Objects.Add(OBJGeom);
}
}
// Static mesh components
UStaticMeshComponent* StaticMeshComponent = NULL;
UStaticMesh* StaticMesh = NULL;
TInlineComponentArray<UStaticMeshComponent*> StaticMeshComponents;
Actor->GetComponents(StaticMeshComponents);
for (int32 j = 0; j < StaticMeshComponents.Num(); j++)
{
// If its a static mesh component, with a static mesh
StaticMeshComponent = StaticMeshComponents[j];
if (StaticMeshComponent->IsRegistered() && StaticMeshComponent->GetStaticMesh() && StaticMeshComponent->GetStaticMesh()->HasValidRenderData())
{
LocalToWorld = StaticMeshComponent->GetComponentTransform().ToMatrixWithScale();
StaticMesh = StaticMeshComponent->GetStaticMesh();
if (StaticMesh)
{
// make room for the faces
FOBJGeom* OBJGeom = new FOBJGeom(StaticMeshComponents.Num() > 1 ? StaticMesh->GetName() : Actor->GetName());
FStaticMeshLODResources* RenderData = &StaticMesh->GetRenderData()->LODResources[0];
FIndexArrayView Indices = RenderData->IndexBuffer.GetArrayView();
uint32 NumIndices = Indices.Num();
// 3 indices for each triangle
check(NumIndices % 3 == 0);
uint32 TriangleCount = NumIndices / 3;
OBJGeom->Faces.AddUninitialized(TriangleCount);
uint32 VertexCount = RenderData->VertexBuffers.PositionVertexBuffer.GetNumVertices();
OBJGeom->VertexData.AddUninitialized(VertexCount);
FOBJVertex* VerticesOut = OBJGeom->VertexData.GetData();
check(VertexCount == RenderData->VertexBuffers.StaticMeshVertexBuffer.GetNumVertices());
FMatrix LocalToWorldInverseTranspose = LocalToWorld.InverseFast().GetTransposed();
for (uint32 i = 0; i < VertexCount; i++)
{
// Vertices
VerticesOut[i].Vert = LocalToWorld.TransformPosition(RenderData->VertexBuffers.PositionVertexBuffer.VertexPosition(i));
// UVs from channel 0
VerticesOut[i].UV = RenderData->VertexBuffers.StaticMeshVertexBuffer.GetVertexUV(i, 0);
// Normal
VerticesOut[i].Normal = LocalToWorldInverseTranspose.TransformVector(RenderData->VertexBuffers.StaticMeshVertexBuffer.VertexTangentZ(i));
}
bool bFlipCullMode = LocalToWorld.RotDeterminant() < 0.0f;
uint32 CurrentTriangleId = 0;
for (int32 SectionIndex = 0; SectionIndex < RenderData->Sections.Num(); ++SectionIndex)
{
FStaticMeshSection& Section = RenderData->Sections[SectionIndex];
UMaterialInterface* Material = 0;
// Get the material for this triangle by first looking at the material overrides array and if that is NULL by looking at the material array in the original static mesh
Material = StaticMeshComponent->GetMaterial(Section.MaterialIndex);
// cache the set of needed materials if desired
if (Materials && Material)
{
Materials->Add(Material);
}
for (uint32 i = 0; i < Section.NumTriangles; i++)
{
FOBJFace& OBJFace = OBJGeom->Faces[CurrentTriangleId++];
uint32 a = Indices[Section.FirstIndex + i * 3 + 0];
uint32 b = Indices[Section.FirstIndex + i * 3 + 1];
uint32 c = Indices[Section.FirstIndex + i * 3 + 2];
if (bFlipCullMode)
{
Swap(a, c);
}
OBJFace.VertexIndex[0] = a;
OBJFace.VertexIndex[1] = b;
OBJFace.VertexIndex[2] = c;
// Material
OBJFace.Material = Material;
}
}
Objects.Add(OBJGeom);
}
}
}
}
// @param Material must not be 0
// @param MatProp e.g. MP_DiffuseColor
static void ExportMaterialPropertyTexture(const FString& BMPFilename, UMaterialInterface* Material, const EMaterialProperty MatProp)
{
check(Material);
// make the BMP for the diffuse channel
TArray<FColor> OutputBMP;
FIntPoint OutSize;
TEnumAsByte<EBlendMode> BlendMode = Material->GetBlendMode();
bool bIsValidMaterial = FMaterialUtilities::SupportsExport((EBlendMode)(BlendMode), MatProp);
if (bIsValidMaterial)
{
PRAGMA_DISABLE_DEPRECATION_WARNINGS
// render the material to a texture to export as a bmp
if (!FMaterialUtilities::ExportMaterialProperty(Material, MatProp, OutputBMP, OutSize))
{
bIsValidMaterial = false;
}
PRAGMA_ENABLE_DEPRECATION_WARNINGS
}
// make invalid textures a solid red
if (!bIsValidMaterial)
{
OutSize = FIntPoint(1, 1);
OutputBMP.Empty();
OutputBMP.Add(FColor(255, 0, 0, 255));
}
// export the diffuse channel bmp
FFileHelper::CreateBitmap(*BMPFilename, OutSize.X, OutSize.Y, OutputBMP.GetData());
}
/**
* Exports the GOBJObjects array to the given Archive
*
* @param FileAr The main archive to output device. However, if MemAr exists, it will write to that until and flush it out for each object
* @param MemAr Optional string output device for caching writes to
* @param Warn Feedback context for updating status
* @param OBJFilename Name of the main OBJ file to export to, used for tagalong files (.mtl, etc)
* @param Objects The list of objects to export
* @param Materials Optional list of materials to export
*/
void ExportOBJs(FOutputDevice& FileAr, FStringOutputDevice* MemAr, FFeedbackContext* Warn, const FString& OBJFilename, TArray<FOBJGeom*>& Objects, const TSet<UMaterialInterface*>* Materials, uint32& IndexOffset)
{
// write to the memory archive if it exists, otherwise use the FileAr
FOutputDevice& Ar = MemAr ? *MemAr : FileAr;
// Make sure we don't corrupt the obj file with terminator line
FileAr.SetAutoEmitLineTerminator(false);
// export extra material info if we added any
if (Materials)
{
// stop the rendering thread so we can easily render to texture
SCOPED_SUSPEND_RENDERING_THREAD(true);
// make a .MTL file next to the .obj file that contains the materials
FString MaterialLibFilename = FPaths::GetBaseFilename(OBJFilename, false) + TEXT(".mtl");
// use the output device file, just like the Exporter makes for the .obj, no backup
FOutputDeviceFile* MaterialLib = new FOutputDeviceFile(*MaterialLibFilename, true);
MaterialLib->SetSuppressEventTag(true);
MaterialLib->SetAutoEmitLineTerminator(false);
// export the material set to a mtllib
int32 MaterialIndex = 0;
for (TSet<UMaterialInterface*>::TConstIterator It(*Materials); It; ++It, ++MaterialIndex)
{
UMaterialInterface* Material = *It;
FString MaterialName = FixupMaterialName(Material);
// export the material info
MaterialLib->Logf(TEXT("newmtl %s\r\n"), *MaterialName);
{
FString BMPFilename = FPaths::GetPath(MaterialLibFilename) / MaterialName + TEXT("_D.bmp");
ExportMaterialPropertyTexture(BMPFilename, Material, MP_BaseColor);
MaterialLib->Logf(TEXT("\tmap_Kd %s\r\n"), *FPaths::GetCleanFilename(BMPFilename));
}
{
FString BMPFilename = FPaths::GetPath(MaterialLibFilename) / MaterialName + TEXT("_S.bmp");
ExportMaterialPropertyTexture(BMPFilename, Material, MP_Specular);
MaterialLib->Logf(TEXT("\tmap_Ks %s\r\n"), *FPaths::GetCleanFilename(BMPFilename));
}
{
FString BMPFilename = FPaths::GetPath(MaterialLibFilename) / MaterialName + TEXT("_N.bmp");
ExportMaterialPropertyTexture(BMPFilename, Material, MP_Normal);
MaterialLib->Logf(TEXT("\tbump %s\r\n"), *FPaths::GetCleanFilename(BMPFilename));
}
MaterialLib->Logf(TEXT("\r\n"));
}
MaterialLib->TearDown();
delete MaterialLib;
Ar.Logf(TEXT("mtllib %s\n"), *FPaths::GetCleanFilename(MaterialLibFilename));
}
for (int32 o = 0; o < Objects.Num(); ++o)
{
FOBJGeom* object = Objects[o];
UMaterialInterface* CurrentMaterial = NULL;
// Object header
Ar.Logf(TEXT("g %s\n"), *object->Name);
Ar.Logf(TEXT("\n"));
// Verts
for (int32 f = 0; f < object->VertexData.Num(); ++f)
{
const FOBJVertex& vertex = object->VertexData[f];
const FVector& vtx = vertex.Vert;
Ar.Logf(TEXT("v %.4f %.4f %.4f\n"), vtx.X, vtx.Z, vtx.Y);
}
Ar.Logf(TEXT("\n"));
// Texture coordinates
for (int32 f = 0; f < object->VertexData.Num(); ++f)
{
const FOBJVertex& face = object->VertexData[f];
const FVector2D& uv = face.UV;
Ar.Logf(TEXT("vt %.4f %.4f\n"), uv.X, 1.0f - uv.Y);
}
Ar.Logf(TEXT("\n"));
// Normals
for (int32 f = 0; f < object->VertexData.Num(); ++f)
{
const FOBJVertex& face = object->VertexData[f];
const FVector& Normal = face.Normal;
Ar.Logf(TEXT("vn %.3f %.3f %.3f\n"), Normal.X, Normal.Z, Normal.Y);
}
Ar.Logf(TEXT("\n"));
// Faces
for (int32 f = 0; f < object->Faces.Num(); ++f)
{
const FOBJFace& face = object->Faces[f];
if (face.Material != CurrentMaterial)
{
CurrentMaterial = face.Material;
Ar.Logf(TEXT("usemtl %s\n"), *FixupMaterialName(face.Material));
}
Ar.Logf(TEXT("f "));
for (int32 v = 0; v < 3; ++v)
{
// +1 as Wavefront files are 1 index based
uint32 VertexIndex = IndexOffset + face.VertexIndex[v] + 1;
Ar.Logf(TEXT("%d/%d/%d "), VertexIndex, VertexIndex, VertexIndex);
}
Ar.Logf(TEXT("\n"));
}
IndexOffset += object->VertexData.Num();
Ar.Logf(TEXT("\n"));
// dump to disk so we don't run out of memory ganging up all objects
if (MemAr)
{
FileAr.Log(*MemAr);
FileAr.Flush();
MemAr->Empty();
}
// we are now done with the object, free it
delete object;
Objects[o] = NULL;
}
}
/**
* Compiles the selection order array by putting every geometry object
* with a valid selection index into the array, and then sorting it.
*/
struct FCompareMaterial
{
FORCEINLINE bool operator()(const FOBJFace& InA, const FOBJFace& InB) const
{
PTRINT A = (PTRINT)(InA.Material);
PTRINT B = (PTRINT)(InB.Material);
return (A < B) ? true : false;
}
};
/*------------------------------------------------------------------------------
ULevelExporterLOD implementation.
------------------------------------------------------------------------------*/
ULevelExporterLOD::ULevelExporterLOD(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UWorld::StaticClass();
bText = true;
bForceFileOperations = true;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("LOD.OBJ"));
FormatDescription.Add(TEXT("Object File for LOD"));
}
bool ULevelExporterLOD::ExportText(const FExportObjectInnerContext* Context, UObject* Object, const TCHAR* Type, FOutputDevice& FileAr, FFeedbackContext* Warn, uint32 PortFlags)
{
GWarn->BeginSlowTask(NSLOCTEXT("UnrealEd", "ExportingLevelToLOD OBJ", "Exporting Level To LOD OBJ"), true);
// containers to hold exportable objects and their materials
TArray<FOBJGeom*> Objects;
TSet<UMaterialInterface*> Materials;
UWorld* World = CastChecked<UWorld>(Object);
// write to memory to buffer file writes
FStringOutputDevice Ar;
// OBJ file header
Ar.Logf(TEXT("# LOD OBJ File Generated by UnrealEd\n"));
Ar.Logf(TEXT("\n"));
TArray<AActor*> ActorsToExport;
for (FActorIterator It(World); It; ++It)
{
AActor* Actor = *It;
// only export selected actors if the flag is set
if (!Actor || (bSelectedOnly && !Actor->IsSelected()))
{
continue;
}
ActorsToExport.Add(Actor);
}
// Export actors
uint32 IndexOffset = 0;
for (int32 Index = 0; Index < ActorsToExport.Num(); ++Index)
{
AActor* Actor = ActorsToExport[Index];
Warn->StatusUpdate(Index, ActorsToExport.Num(), NSLOCTEXT("UnrealEd", "ExportingLevelToOBJ", "Exporting Level To OBJ"));
// for now, only export static mesh actors
if (Cast<AStaticMeshActor>(Actor) == NULL)
{
continue;
}
// export any actor that passes the tests
AddActorToOBJs(Actor, Objects, &Materials, bSelectedOnly);
for (int32 o = 0; o < Objects.Num(); ++o)
{
FOBJGeom* object = Objects[o];
object->Faces.Sort(FCompareMaterial());
}
// Export to the OBJ file
ExportOBJs(FileAr, &Ar, Warn, CurrentFilename, Objects, &Materials, IndexOffset);
Objects.Reset();
}
// OBJ file footer
Ar.Logf(TEXT("# dElaernU yb detareneG eliF JBO DOL\n"));
GWarn->EndSlowTask();
// dump the rest to the file
FileAr.Log(*Ar);
return true;
}
/*------------------------------------------------------------------------------
ULevelExporterOBJ implementation.
------------------------------------------------------------------------------*/
static void ExportPolys(UPolys* Polys, int32& PolyNum, int32 TotalPolys, FFeedbackContext* Warn, bool bSelectedOnly, UModel* Model, TArray<FOBJGeom*>& Objects)
{
FOBJGeom* OBJGeom = new FOBJGeom(TEXT("BSP"));
for (int32 i = 0; i < Model->Nodes.Num(); i++)
{
FBspNode* Node = &Model->Nodes[i];
FBspSurf& Surf = Model->Surfs[Node->iSurf];
if ((Surf.PolyFlags & PF_Selected) || !bSelectedOnly)
{
const FVector& TextureBase = Model->Points[Surf.pBase];
const FVector& TextureX = Model->Vectors[Surf.vTextureU];
const FVector& TextureY = Model->Vectors[Surf.vTextureV];
const FVector& Normal = Model->Vectors[Surf.vNormal];
FPoly Poly;
GEditor->polyFindMaster(Model, Node->iSurf, Poly);
// Triangulate this node and generate an OBJ face from the vertices.
for (int32 StartVertexIndex = 1; StartVertexIndex < Node->NumVertices - 1; StartVertexIndex++)
{
int32 TriangleIndex = OBJGeom->Faces.AddZeroed();
FOBJFace& OBJFace = OBJGeom->Faces[TriangleIndex];
int32 VertexIndex = OBJGeom->VertexData.AddZeroed(3);
FOBJVertex* Vertices = &OBJGeom->VertexData[VertexIndex];
OBJFace.VertexIndex[0] = VertexIndex;
OBJFace.VertexIndex[1] = VertexIndex + 1;
OBJFace.VertexIndex[2] = VertexIndex + 2;
// These map the node's vertices to the 3 triangle indices to triangulate the convex polygon.
int32 TriVertIndices[3] = {Node->iVertPool,
Node->iVertPool + StartVertexIndex,
Node->iVertPool + StartVertexIndex + 1};
for (uint32 TriVertexIndex = 0; TriVertexIndex < 3; TriVertexIndex++)
{
const FVert& Vert = Model->Verts[TriVertIndices[TriVertexIndex]];
const FVector& Vertex = Model->Points[Vert.pVertex];
float U = ((Vertex - TextureBase) | TextureX) / UModel::GetGlobalBSPTexelScale();
float V = ((Vertex - TextureBase) | TextureY) / UModel::GetGlobalBSPTexelScale();
Vertices[TriVertexIndex].Vert = Vertex;
Vertices[TriVertexIndex].UV = FVector2D(U, V);
Vertices[TriVertexIndex].Normal = Normal;
}
}
}
}
// Save the object representing the BSP into the OBJ pool
if (OBJGeom->Faces.Num() > 0)
{
Objects.Add(OBJGeom);
}
else
{
delete OBJGeom;
}
}
ULevelExporterOBJ::ULevelExporterOBJ(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UWorld::StaticClass();
bText = true;
bForceFileOperations = true;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("OBJ"));
FormatDescription.Add(TEXT("Object File"));
}
bool ULevelExporterOBJ::ExportText(const FExportObjectInnerContext* Context, UObject* Object, const TCHAR* Type, FOutputDevice& FileAr, FFeedbackContext* Warn, uint32 PortFlags)
{
TSet<UMaterialInterface*> GlobalMaterials;
TSet<UMaterialInterface*>* Materials = 0;
int32 YesNoCancelReply = EAppReturnType::Yes;
if (!(GIsAutomationTesting || FApp::IsUnattended() || ExportTask->bAutomated))
{
YesNoCancelReply = FMessageDialog::Open(EAppMsgType::YesNoCancel, NSLOCTEXT("UnrealEd", "Prompt_OBJExportWithBMP", "Would you like to export the materials as images (slower)?"));
}
else
{
UE_LOG(LogEditorExporters, Display, TEXT("Executing OBJ automated export, materials will be exported as images by default."));
}
switch (YesNoCancelReply)
{
case EAppReturnType::Yes:
Materials = &GlobalMaterials;
break;
case EAppReturnType::No:
break;
case EAppReturnType::Cancel:
return 1;
}
GWarn->BeginSlowTask(NSLOCTEXT("UnrealEd", "ExportingLevelToOBJ", "Exporting Level To OBJ"), true);
// container to hold all exportable objects
TArray<FOBJGeom*> Objects;
UWorld* World = CastChecked<UWorld>(Object);
GEditor->bspBuildFPolys(World->GetModel(), 0, 0);
UPolys* Polys = World->GetModel()->Polys;
// write to memory to buffer file writes
FStringOutputDevice Ar;
// OBJ file header
Ar.Logf(TEXT("# OBJ File Generated by UnrealEd\n"));
Ar.Logf(TEXT("\n"));
uint32 IndexOffset = 0;
// Export the BSP
int32 Dummy;
ExportPolys(Polys, Dummy, 0, Warn, bSelectedOnly, World->GetModel(), Objects);
// Export polys to the OBJ file
ExportOBJs(FileAr, &Ar, Warn, CurrentFilename, Objects, NULL, IndexOffset);
Objects.Reset();
// Export actors
TArray<AActor*> ActorsToExport;
for (FActorIterator It(World); It; ++It)
{
AActor* Actor = *It;
// only export selected actors if the flag is set
if (!Actor || (bSelectedOnly && !Actor->IsSelected()))
{
continue;
}
ActorsToExport.Add(Actor);
}
for (int32 Index = 0; Index < ActorsToExport.Num(); ++Index)
{
AActor* Actor = ActorsToExport[Index];
Warn->StatusUpdate(Index, ActorsToExport.Num(), NSLOCTEXT("UnrealEd", "ExportingLevelToOBJ", "Exporting Level To OBJ"));
// try to export every object
AddActorToOBJs(Actor, Objects, Materials, bSelectedOnly);
for (int32 o = 0; o < Objects.Num(); ++o)
{
FOBJGeom* object = Objects[o];
object->Faces.Sort(FCompareMaterial());
}
}
// Export to the OBJ file
ExportOBJs(FileAr, &Ar, Warn, CurrentFilename, Objects, Materials, IndexOffset);
Objects.Reset();
// OBJ file footer
Ar.Logf(TEXT("# dElaernU yb detareneG eliF JBO\n"));
GWarn->EndSlowTask();
// write anything left in the memory Ar to disk
FileAr.Log(*Ar);
return 1;
}
/*------------------------------------------------------------------------------
ULevelExporterFBX implementation.
------------------------------------------------------------------------------*/
ULevelExporterFBX::ULevelExporterFBX(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UWorld::StaticClass();
bText = false;
bForceFileOperations = false;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("FBX"));
FormatDescription.Add(TEXT("FBX File"));
}
bool IsSomethingToExport(AActor* Actor)
{
check(Actor);
TInlineComponentArray<USceneComponent*> ComponentsToExport;
for (UActorComponent* ActorComp: Actor->GetComponents())
{
USceneComponent* Component = Cast<USceneComponent>(ActorComp);
if (Component == nullptr || Component->bHiddenInGame)
{
// Skip hidden component like camera mesh or other editor helper
continue;
}
UStaticMeshComponent* StaticMeshComp = Cast<UStaticMeshComponent>(Component);
USkeletalMeshComponent* SkelMeshComp = Cast<USkeletalMeshComponent>(Component);
UChildActorComponent* ChildActorComp = Cast<UChildActorComponent>(Component);
if ((StaticMeshComp && StaticMeshComp->GetStaticMesh()) ||
(SkelMeshComp && SkelMeshComp->SkeletalMesh) ||
Component->IsA(UCameraComponent::StaticClass()) ||
Component->IsA(ULightComponent::StaticClass()) ||
(ChildActorComp && ChildActorComp->GetChildActor() && IsSomethingToExport(ChildActorComp->GetChildActor())))
{
return true;
}
}
return false;
}
bool IsSomethingToExport(ULevel* InLevel, bool bSelectedOnly)
{
TArray<AActor*> ActorToExport;
int32 ActorCount = InLevel->Actors.Num();
for (int32 ActorIndex = 0; ActorIndex < ActorCount; ++ActorIndex)
{
AActor* Actor = InLevel->Actors[ActorIndex];
if (Actor != nullptr && (!bSelectedOnly || (bSelectedOnly && Actor->IsSelected())))
{
if (IsSomethingToExport(Actor))
{
return true;
}
else if (Actor->IsA(ALandscapeProxy::StaticClass()) || Actor->IsA(AEmitter::StaticClass()))
{
return true;
}
else if (Actor->IsA(ABrush::StaticClass()))
{
ABrush* BrushActor = Cast<ABrush>(Actor);
UModel* Model = BrushActor->GetBrushComponent()->Brush;
if (Model != NULL && Model->VertexBuffer.Vertices.Num() >= 3 && Model->MaterialIndexBuffers.Num() != 0)
{
return true;
}
}
}
}
return false;
}
bool IsSomethingToExport(UWorld* World, bool bSelectedOnly)
{
if (bSelectedOnly && World->GetModel()->Nodes.Num())
{
return true;
}
ULevel* Level = World->PersistentLevel;
if (IsSomethingToExport(Level, bSelectedOnly))
{
return true;
}
// Export streaming levels and actors
for (int32 CurLevelIndex = 0; CurLevelIndex < World->GetNumLevels(); ++CurLevelIndex)
{
ULevel* CurLevel = World->GetLevel(CurLevelIndex);
if (CurLevel != NULL && CurLevel != Level)
{
if (IsSomethingToExport(CurLevel, bSelectedOnly))
{
return true;
}
}
}
return false;
}
bool ULevelExporterFBX::ExportBinary(UObject* Object, const TCHAR* Type, FArchive& Ar, FFeedbackContext* Warn, int32 FileIndex, uint32 PortFlags)
{
UWorld* World = CastChecked<UWorld>(Object);
// Check if there is something to export
if (!IsSomethingToExport(World, bSelectedOnly))
{
UE_LOG(LogEditorExporters, Warning, TEXT("There is nothing to export to a fbx file."));
if (!GIsAutomationTesting && !FApp::IsUnattended())
{
FNotificationInfo NotificationInfo(FText::GetEmpty());
NotificationInfo.Text = bSelectedOnly ? FText(NSLOCTEXT("UnrealEd", "ExportingLevelToFBX_Selection", "The selection has nothing that can be exported to fbx!")) : FText(NSLOCTEXT("UnrealEd", "ExportingLevelToFBX_World", "The world has nothing that can be exported to fbx!"));
NotificationInfo.ExpireDuration = 5.0f;
FSlateNotificationManager::Get().AddNotification(NotificationInfo);
}
return false;
}
GWarn->BeginSlowTask(NSLOCTEXT("UnrealEd", "ExportingLevelToFBX", "Exporting Level To FBX"), true);
UnFbx::FFbxExporter* Exporter = UnFbx::FFbxExporter::GetInstance();
bool ExportCancel = false;
if (UFbxExportOption* AutomatedExportOptions = GetAutomatedExportOptionsFbx())
{
Exporter->SetExportOptionsOverride(AutomatedExportOptions);
}
else
{
// Show the fbx export dialog options
bool ExportAll = false;
Exporter->FillExportOptions(false, true, UExporter::CurrentFilename, ExportCancel, ExportAll);
}
if (!ExportCancel)
{
Exporter->CreateDocument();
GWarn->StatusUpdate(0, 1, NSLOCTEXT("UnrealEd", "ExportingLevelToFBX", "Exporting Level To FBX"));
{
ULevel* Level = World->PersistentLevel;
if (bSelectedOnly)
{
Exporter->ExportBSP(World->GetModel(), true);
}
INodeNameAdapter NodeNameAdapter;
Exporter->ExportLevelMesh(Level, bSelectedOnly, NodeNameAdapter);
// Export streaming levels and actors
for (int32 CurLevelIndex = 0; CurLevelIndex < World->GetNumLevels(); ++CurLevelIndex)
{
ULevel* CurLevel = World->GetLevel(CurLevelIndex);
if (CurLevel != NULL && CurLevel != Level)
{
Exporter->ExportLevelMesh(CurLevel, bSelectedOnly, NodeNameAdapter);
}
}
}
Exporter->WriteToFile(*UExporter::CurrentFilename);
}
Exporter->SetExportOptionsOverride(nullptr);
GWarn->EndSlowTask();
return true;
}
/*------------------------------------------------------------------------------
UPolysExporterOBJ implementation.
------------------------------------------------------------------------------*/
UPolysExporterOBJ::UPolysExporterOBJ(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UPolys::StaticClass();
bText = true;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("OBJ"));
FormatDescription.Add(TEXT("Object File"));
}
bool UPolysExporterOBJ::ExportText(const FExportObjectInnerContext* Context, UObject* Object, const TCHAR* Type, FOutputDevice& Ar, FFeedbackContext* Warn, uint32 PortFlags)
{
TArray<FOBJGeom*> Objects;
UPolys* Polys = CastChecked<UPolys>(Object);
int32 PolyNum = 0;
int32 TotalPolys = Polys->Element.Num();
Ar.Logf(TEXT("# OBJ File Generated by UnrealEd\n"));
UWorld* World = CastChecked<UWorld>(Object);
ExportPolys(Polys, PolyNum, TotalPolys, Warn, false, World->GetModel(), Objects);
for (int32 o = 0; o < Objects.Num(); ++o)
{
FOBJGeom* object = Objects[o];
object->Faces.Sort(FCompareMaterial());
}
uint32 IndexOffset = 0;
// Export to the OBJ file
ExportOBJs(Ar, NULL, Warn, CurrentFilename, Objects, NULL, IndexOffset);
Ar.Logf(TEXT("# dElaernU yb detareneG eliF JBO\n"));
return 1;
}
/*------------------------------------------------------------------------------
USequenceExporterT3D implementation.
------------------------------------------------------------------------------*/
USequenceExporterT3D::USequenceExporterT3D(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
}
bool USequenceExporterT3D::ExportText(const FExportObjectInnerContext* Context, UObject* Object, const TCHAR* Type, FOutputDevice& Ar, FFeedbackContext* Warn, uint32 PortFlags)
{
return true;
}
/*------------------------------------------------------------------------------
UStaticMeshExporterOBJ implementation.
------------------------------------------------------------------------------*/
UStaticMeshExporterOBJ::UStaticMeshExporterOBJ(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UStaticMesh::StaticClass();
bText = true;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("OBJ"));
FormatDescription.Add(TEXT("Object File"));
}
bool UStaticMeshExporterOBJ::ExportText(const FExportObjectInnerContext* Context, UObject* Object, const TCHAR* Type, FOutputDevice& Ar, FFeedbackContext* Warn, uint32 PortFlags)
{
UStaticMesh* StaticMesh = CastChecked<UStaticMesh>(Object);
{
// Currently, we only export LOD 0 of the static mesh. In the future, we could potentially export all available LODs
const FStaticMeshLODResources& RenderData = StaticMesh->GetLODForExport(0);
uint32 Count = RenderData.GetNumTriangles();
bool bHasUVLightMap = RenderData.VertexBuffers.StaticMeshVertexBuffer.GetNumTexCoords() > 1;
// Create a new filename for the lightmap coordinate OBJ file (by adding "_UV1" to the end of the filename)
FString Filename = UExporter::CurrentFilename.Left(UExporter::CurrentFilename.Len() - 4) + "_UV1." + UExporter::CurrentFilename.Right(3);
// Open a second archive here so we can export lightmap coordinates at the same time we export the regular mesh
FArchive* UV1File = bHasUVLightMap ? IFileManager::Get().CreateFileWriter(*Filename) : nullptr;
TArray<FVector> Verts; // The verts in the mesh
TArray<FVector2D> UVs; // UV coords from channel 0
TArray<FVector2D> UVLMs; // Lightmap UVs from channel 1
TArray<FVector> Normals; // Normals
TArray<uint32> SmoothingMasks; // Complete collection of the smoothing groups from all triangles
TArray<uint32> UniqueSmoothingMasks; // Collection of the unique smoothing groups (used when writing out the face info into the OBJ file so we can group by smoothing group)
if (bHasUVLightMap)
{
UV1File->Logf(TEXT("# UnrealEd OBJ exporter\r\n"));
}
Ar.Log(TEXT("# UnrealEd OBJ exporter\r\n"));
FMeshDescription* MeshDescription = StaticMesh->GetMeshDescription(0);
if (MeshDescription != nullptr)
{
uint32 TriangleCount = MeshDescription->Triangles().Num();
if (Count == TriangleCount)
{
SmoothingMasks.AddZeroed(TriangleCount);
FStaticMeshOperations::ConvertHardEdgesToSmoothGroup(*MeshDescription, SmoothingMasks);
for (uint32 SmoothValue: SmoothingMasks)
{
UniqueSmoothingMasks.AddUnique(SmoothValue);
}
}
}
// This can happen in case the base LOD is reduce or the recompute normals has generate a different number of cases
// the count will be lower and in such a case the smooth group of the original mesh description cannot be used since it is out of sync with the render data.
if (SmoothingMasks.Num() != Count)
{
// Create one SmoothGroup with 0 values
SmoothingMasks.Empty(Count);
SmoothingMasks.AddZeroed(Count);
UniqueSmoothingMasks.Empty(1);
UniqueSmoothingMasks.Add(0);
}
// Collect all the data about the mesh
Verts.Reserve(3 * Count);
UVs.Reserve(3 * Count);
UVLMs.Reserve(3 * Count);
Normals.Reserve(3 * Count);
FIndexArrayView Indices = RenderData.IndexBuffer.GetArrayView();
for (uint32 tri = 0; tri < Count; tri++)
{
uint32 Index1 = Indices[(tri * 3) + 0];
uint32 Index2 = Indices[(tri * 3) + 1];
uint32 Index3 = Indices[(tri * 3) + 2];
FVector Vertex1 = RenderData.VertexBuffers.PositionVertexBuffer.VertexPosition(Index1); //(FStaticMeshFullVertex*)(RawVertexData + Index1 * VertexStride);
FVector Vertex2 = RenderData.VertexBuffers.PositionVertexBuffer.VertexPosition(Index2);
FVector Vertex3 = RenderData.VertexBuffers.PositionVertexBuffer.VertexPosition(Index3);
// Vertices
Verts.Add(Vertex1);
Verts.Add(Vertex2);
Verts.Add(Vertex3);
// UVs from channel 0
UVs.Add(RenderData.VertexBuffers.StaticMeshVertexBuffer.GetVertexUV(Index1, 0));
UVs.Add(RenderData.VertexBuffers.StaticMeshVertexBuffer.GetVertexUV(Index2, 0));
UVs.Add(RenderData.VertexBuffers.StaticMeshVertexBuffer.GetVertexUV(Index3, 0));
// UVs from channel 1 (lightmap coords)
if (bHasUVLightMap)
{
UVLMs.Add(RenderData.VertexBuffers.StaticMeshVertexBuffer.GetVertexUV(Index1, 1));
UVLMs.Add(RenderData.VertexBuffers.StaticMeshVertexBuffer.GetVertexUV(Index2, 1));
UVLMs.Add(RenderData.VertexBuffers.StaticMeshVertexBuffer.GetVertexUV(Index3, 1));
}
// Normals
Normals.Add(RenderData.VertexBuffers.StaticMeshVertexBuffer.VertexTangentZ(Index1));
Normals.Add(RenderData.VertexBuffers.StaticMeshVertexBuffer.VertexTangentZ(Index2));
Normals.Add(RenderData.VertexBuffers.StaticMeshVertexBuffer.VertexTangentZ(Index3));
}
// Write out the vertex data
if (bHasUVLightMap)
{
UV1File->Logf(TEXT("\r\n"));
}
Ar.Log(TEXT("\r\n"));
for (int32 v = 0; v < Verts.Num(); ++v)
{
// Transform to Lightwave's coordinate system
if (bHasUVLightMap)
{
UV1File->Logf(TEXT("v %f %f %f\r\n"), Verts[v].X, Verts[v].Z, Verts[v].Y);
}
Ar.Logf(TEXT("v %f %f %f\r\n"), Verts[v].X, Verts[v].Z, Verts[v].Y);
}
// Write out the UV data (the lightmap file differs here in that it writes from the UVLMs array instead of UVs)
if (bHasUVLightMap)
{
UV1File->Logf(TEXT("\r\n"));
}
Ar.Log(TEXT("\r\n"));
for (int32 uv = 0; uv < UVs.Num(); ++uv)
{
// Invert the y-coordinate (Lightwave has their bitmaps upside-down from us).
if (bHasUVLightMap)
{
UV1File->Logf(TEXT("vt %f %f\r\n"), UVLMs[uv].X, 1.0f - UVLMs[uv].Y);
}
Ar.Logf(TEXT("vt %f %f\r\n"), UVs[uv].X, 1.0f - UVs[uv].Y);
}
// Write object header
if (bHasUVLightMap)
{
UV1File->Logf(TEXT("\r\n"));
UV1File->Logf(TEXT("g UnrealEdObject\r\n"));
UV1File->Logf(TEXT("\r\n"));
}
Ar.Log(TEXT("\r\n"));
Ar.Log(TEXT("g UnrealEdObject\r\n"));
Ar.Log(TEXT("\r\n"));
// Write out the face windings, sectioned by unique smoothing groups
int32 SmoothingGroup = 0;
for (int32 sm = 0; sm < UniqueSmoothingMasks.Num(); ++sm)
{
if (bHasUVLightMap)
{
UV1File->Logf(TEXT("s %i\r\n"), SmoothingGroup);
}
Ar.Logf(TEXT("s %i\r\n"), SmoothingGroup);
SmoothingGroup++;
for (int32 tri = 0; tri < RenderData.GetNumTriangles(); tri++)
{
if (SmoothingMasks[tri] == UniqueSmoothingMasks[sm])
{
int idx = 1 + (tri * 3);
if (bHasUVLightMap)
{
UV1File->Logf(TEXT("f %d/%d %d/%d %d/%d\r\n"), idx, idx, idx + 1, idx + 1, idx + 2, idx + 2);
}
Ar.Logf(TEXT("f %d/%d %d/%d %d/%d\r\n"), idx, idx, idx + 1, idx + 1, idx + 2, idx + 2);
}
}
}
// Write out footer
if (bHasUVLightMap)
{
UV1File->Logf(TEXT("\r\n"));
UV1File->Logf(TEXT("g\r\n"));
}
Ar.Log(TEXT("\r\n"));
Ar.Log(TEXT("g\r\n"));
if (bHasUVLightMap)
{
// Clean up and finish
delete UV1File;
}
}
// ------------------------------------------------------
//
{
// Create a new filename for the internal OBJ file (by adding "_Internal" to the end of the filename)
FString Filename = UExporter::CurrentFilename.Left(UExporter::CurrentFilename.Len() - 4) + "_Internal." + UExporter::CurrentFilename.Right(3);
// Open another archive
FArchive* File = IFileManager::Get().CreateFileWriter(*Filename);
File->Logf(TEXT("# UnrealEd OBJ exporter (_Internal)\r\n"));
// Currently, we only export LOD 0 of the static mesh. In the future, we could potentially export all available LODs
const FStaticMeshLODResources& RenderData = StaticMesh->GetLODForExport(0);
uint32 VertexCount = RenderData.GetNumVertices();
check(VertexCount == RenderData.VertexBuffers.StaticMeshVertexBuffer.GetNumVertices());
File->Logf(TEXT("\r\n"));
for (uint32 i = 0; i < VertexCount; i++)
{
const FVector& OSPos = RenderData.VertexBuffers.PositionVertexBuffer.VertexPosition(i);
// const FVector WSPos = StaticMeshComponent->LocalToWorld.TransformPosition( OSPos );
const FVector WSPos = OSPos;
// Transform to Lightwave's coordinate system
File->Logf(TEXT("v %f %f %f\r\n"), WSPos.X, WSPos.Z, WSPos.Y);
}
File->Logf(TEXT("\r\n"));
for (uint32 i = 0; i < VertexCount; ++i)
{
// takes the first UV
const FVector2D UV = RenderData.VertexBuffers.StaticMeshVertexBuffer.GetVertexUV(i, 0);
// Invert the y-coordinate (Lightwave has their bitmaps upside-down from us).
File->Logf(TEXT("vt %f %f\r\n"), UV.X, 1.0f - UV.Y);
}
File->Logf(TEXT("\r\n"));
for (uint32 i = 0; i < VertexCount; ++i)
{
const FVector& OSNormal = RenderData.VertexBuffers.StaticMeshVertexBuffer.VertexTangentZ(i);
const FVector WSNormal = OSNormal;
// Transform to Lightwave's coordinate system
File->Logf(TEXT("vn %f %f %f\r\n"), WSNormal.X, WSNormal.Z, WSNormal.Y);
}
{
FIndexArrayView Indices = RenderData.IndexBuffer.GetArrayView();
uint32 NumIndices = Indices.Num();
check(NumIndices % 3 == 0);
for (uint32 i = 0; i < NumIndices / 3; i++)
{
// Wavefront indices are 1 based
uint32 a = Indices[3 * i + 0] + 1;
uint32 b = Indices[3 * i + 1] + 1;
uint32 c = Indices[3 * i + 2] + 1;
File->Logf(TEXT("f %d/%d/%d %d/%d/%d %d/%d/%d\r\n"),
a, a, a,
b, b, b,
c, c, c);
}
}
delete File;
}
return true;
}
/*------------------------------------------------------------------------------
UExporterFBX implementation.
------------------------------------------------------------------------------*/
UFbxExportOption* UExporterFBX::GetAutomatedExportOptionsFbx()
{
if (ExportTask && ExportTask->bAutomated)
{
return Cast<UFbxExportOption>(ExportTask->Options);
}
return nullptr;
}
/*------------------------------------------------------------------------------
UStaticMeshExporterFBX implementation.
------------------------------------------------------------------------------*/
UStaticMeshExporterFBX::UStaticMeshExporterFBX(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UStaticMesh::StaticClass();
bText = false;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("FBX"));
FormatDescription.Add(TEXT("FBX File"));
}
bool UStaticMeshExporterFBX::ExportBinary(UObject* Object, const TCHAR* Type, FArchive& Ar, FFeedbackContext* Warn, int32 FileIndex, uint32 PortFlags)
{
UStaticMesh* StaticMesh = CastChecked<UStaticMesh>(Object);
UnFbx::FFbxExporter* Exporter = UnFbx::FFbxExporter::GetInstance();
if (UFbxExportOption* AutomatedExportOptions = GetAutomatedExportOptionsFbx())
{
Exporter->SetExportOptionsOverride(AutomatedExportOptions);
SetShowExportOption(false);
}
else
{
// Show the fbx export dialog options
bool ExportAll = GetBatchMode() && !GetShowExportOption();
bool ExportCancel = false;
Exporter->FillExportOptions(GetBatchMode(), GetShowExportOption(), UExporter::CurrentFilename, ExportCancel, ExportAll);
if (ExportCancel)
{
SetCancelBatch(GetBatchMode());
// User cancel the FBX export
return false;
}
SetShowExportOption(!ExportAll);
}
Exporter->CreateDocument();
Exporter->ExportStaticMesh(StaticMesh);
Exporter->WriteToFile(*UExporter::CurrentFilename);
Exporter->SetExportOptionsOverride(nullptr);
return true;
}
/*------------------------------------------------------------------------------
USkeletalMeshExporterFBX implementation.
------------------------------------------------------------------------------*/
USkeletalMeshExporterFBX::USkeletalMeshExporterFBX(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = USkeletalMesh::StaticClass();
bText = false;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("FBX"));
FormatDescription.Add(TEXT("FBX File"));
}
bool USkeletalMeshExporterFBX::ExportBinary(UObject* Object, const TCHAR* Type, FArchive& Ar, FFeedbackContext* Warn, int32 FileIndex, uint32 PortFlags)
{
USkeletalMesh* SkeletalMesh = CastChecked<USkeletalMesh>(Object);
UnFbx::FFbxExporter* Exporter = UnFbx::FFbxExporter::GetInstance();
if (UFbxExportOption* AutomatedExportOptions = GetAutomatedExportOptionsFbx())
{
Exporter->SetExportOptionsOverride(AutomatedExportOptions);
SetShowExportOption(false);
}
else
{
// Show the fbx export dialog options
bool ExportAll = GetBatchMode() && !GetShowExportOption();
bool ExportCancel = false;
Exporter->FillExportOptions(GetBatchMode(), GetShowExportOption(), UExporter::CurrentFilename, ExportCancel, ExportAll);
if (ExportCancel)
{
SetCancelBatch(GetBatchMode());
// User cancel the FBX export
return false;
}
SetShowExportOption(!ExportAll);
}
Exporter->CreateDocument();
Exporter->ExportSkeletalMesh(SkeletalMesh);
Exporter->WriteToFile(*UExporter::CurrentFilename);
Exporter->SetExportOptionsOverride(nullptr);
return true;
}
/*------------------------------------------------------------------------------
UAnimSequenceExporterFBX implementation.
------------------------------------------------------------------------------*/
UAnimSequenceExporterFBX::UAnimSequenceExporterFBX(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
SupportedClass = UAnimSequence::StaticClass();
bText = false;
PreferredFormatIndex = 0;
FormatExtension.Add(TEXT("FBX"));
FormatDescription.Add(TEXT("FBX File"));
}
bool UAnimSequenceExporterFBX::ExportBinary(UObject* Object, const TCHAR* Type, FArchive& Ar, FFeedbackContext* Warn, int32 FileIndex, uint32 PortFlags)
{
UAnimSequence* AnimSequence = CastChecked<UAnimSequence>(Object);
USkeleton* AnimSkeleton = AnimSequence->GetSkeleton();
USkeletalMesh* PreviewMesh = AnimSkeleton ? AnimSkeleton->GetAssetPreviewMesh(AnimSequence) : NULL;
if (AnimSkeleton && PreviewMesh)
{
UnFbx::FFbxExporter* Exporter = UnFbx::FFbxExporter::GetInstance();
if (UFbxExportOption* AutomatedExportOptions = GetAutomatedExportOptionsFbx())
{
Exporter->SetExportOptionsOverride(AutomatedExportOptions);
SetShowExportOption(false);
}
else
{
// Show the fbx export dialog options
bool ExportAll = GetBatchMode() && !GetShowExportOption();
bool ExportCancel = false;
Exporter->FillExportOptions(GetBatchMode(), GetShowExportOption(), UExporter::CurrentFilename, ExportCancel, ExportAll);
if (ExportCancel)
{
SetCancelBatch(GetBatchMode());
// User cancel the FBX export
return false;
}
SetShowExportOption(!ExportAll);
}
Exporter->CreateDocument();
Exporter->ExportAnimSequence(AnimSequence, PreviewMesh, Exporter->GetExportOptions()->bExportPreviewMesh);
Exporter->WriteToFile(*UExporter::CurrentFilename);
Exporter->SetExportOptionsOverride(nullptr);
return true;
}
if (!AnimSkeleton)
{
UE_LOG(LogEditorExporters, Warning, TEXT("Cannot export animation sequence [%s] because the skeleton is not set."), *AnimSequence->GetName());
}
else
{
UE_LOG(LogEditorExporters, Warning, TEXT("Cannot export animation sequence [%s] because the preview mesh is not set."), *AnimSequence->GetName());
}
return false;
}
void UEditorEngine::RebuildStaticNavigableGeometry(ULevel* Level)
{
// iterate through all BSPs and gather it's geometry, without any filtering - filtering will be done while building
// NOTE: any other game-time static geometry can (and should) be added here
if (Level != NULL)
{
Level->StaticNavigableGeometry.Reset();
if (Level->Model != NULL)
{
UModel* Model = Level->Model;
int32 TotalPolys = 0;
TArray<FPoly> TempPolys;
bspBuildFPolys(Model, 0, 0, &TempPolys);
UPolys* Polys = Model->Polys;
int32 PolyNum = TempPolys.Num();
TotalPolys = TotalPolys + PolyNum;
for (int32 i = 0; i < Model->Nodes.Num(); ++i)
{
FBspNode* Node = &Model->Nodes[i];
FBspSurf& Surf = Model->Surfs[Node->iSurf];
const FVector& TextureBase = Model->Points[Surf.pBase];
const FVector& TextureX = Model->Vectors[Surf.vTextureU];
const FVector& TextureY = Model->Vectors[Surf.vTextureV];
const FVector& Normal = Model->Vectors[Surf.vNormal];
FPoly Poly;
polyFindMaster(Model, Node->iSurf, Poly);
// Triangulate this node and generate an OBJ face from the vertices.
for (int32 StartVertexIndex = 1; StartVertexIndex < Node->NumVertices - 1; StartVertexIndex++)
{
// These map the node's vertices to the 3 triangle indices to triangulate the convex polygon.
int32 TriVertIndices[3] = {Node->iVertPool,
Node->iVertPool + StartVertexIndex,
Node->iVertPool + StartVertexIndex + 1};
for (uint32 TriVertexIndex = 0; TriVertexIndex < 3; TriVertexIndex++)
{
const FVert& Vert = Model->Verts[TriVertIndices[TriVertexIndex]];
Level->StaticNavigableGeometry.Add(Model->Points[Vert.pVertex]);
}
}
}
}
FNavigationSystem::UpdateLevelCollision(*Level);
}
}
/*-----------------------------------------------------------------------------
UExportTextContainer
-----------------------------------------------------------------------------*/
UExportTextContainer::UExportTextContainer(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
}
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