void UGTCaptureComponent::TickComponent(float DeltaTime, enum ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
// void UGTCaptureComponent::Tick(float DeltaTime) // This tick function should be called by the scene instead of been
{
// Render pixels out in the next tick. To allow time to render images out.
// Update rotation of each frame
// from ab237f46dc0eee40263acbacbe938312eb0dffbb:CameraComponent.cpp:232
check(this->Pawn); // this GTCapturer should be released, if the Pawn is deleted.
const APawn* OwningPawn = this->Pawn;
const AController* OwningController = OwningPawn ? OwningPawn->GetController() : nullptr;
if (OwningController && OwningController->IsLocalPlayerController())
{
const FRotator PawnViewRotation = OwningPawn->GetViewRotation();
for (auto Elem : CaptureComponents)
{
USceneCaptureComponent2D* CaptureComponent = Elem.Value;
if (!PawnViewRotation.Equals(CaptureComponent->GetComponentRotation()))
{
CaptureComponent->SetWorldRotation(PawnViewRotation);
}
}
}
while (!PendingTasks.IsEmpty())
{
FGTCaptureTask Task;
PendingTasks.Peek(Task);
uint64 CurrentFrame = GFrameCounter;
int32 SkipFrame = 1;
if (!(CurrentFrame > Task.CurrentFrame + SkipFrame)) // TODO: This is not an elegant solution, fix it later.
{ // Wait for the rendering thread to catch up game thread.
break;
}
PendingTasks.Dequeue(Task);
USceneCaptureComponent2D* CaptureComponent = this->CaptureComponents.FindRef(Task.Mode);
if (CaptureComponent == nullptr)
{
UE_LOG(LogUnrealCV, Warning, TEXT("Unrecognized capture mode %s"), *Task.Mode);
}
else
{
FString LowerCaseFilename = Task.Filename.ToLower();
if (LowerCaseFilename.EndsWith("png"))
{
SavePng(CaptureComponent->TextureTarget, Task.Filename);
}
else if (LowerCaseFilename.EndsWith("exr"))
{
SaveExr(CaptureComponent->TextureTarget, Task.Filename);
}
else
{
UE_LOG(LogUnrealCV, Warning, TEXT("Unrecognized image file extension %s"), *LowerCaseFilename);
}
}
Task.AsyncRecord->bIsCompleted = true;
}
}
void SaveImage(const Image<unsigned char>& image, const pangolin::VideoPixelFormat& fmt, const std::string& filename, ImageFileType file_type, bool top_line_first)
{
switch (file_type) {
case ImageFileTypePng:
return SavePng(image, fmt, filename, top_line_first);
case ImageFileTypeExr:
return SaveExr(image, fmt, filename, top_line_first);
default:
throw std::runtime_error("Unsupported image file type, '" + filename + "'");
}
}