add cpp example

Source/MediaPipeDemo/MediaPipeCppExample.cpp

@@ -0,0 +1,67 @@
+#include "MediaPipeCppExample.h"
+#include "DrawDebugHelpers.h"
+
+AMediaPipeCppExample::AMediaPipeCppExample()
+{
+	PrimaryActorTick.bCanEverTick = true;
+
+	Root = CreateDefaultSubobject<USceneComponent>(TEXT("RootComponent"));
+	Pipeline = CreateDefaultSubobject<UMediaPipePipelineComponent>(TEXT("Pipeline"));
+	Observer = CreateDefaultSubobject<UMediaPipeLandmarkObserverComponent>(TEXT("Observer"));
+
+	Pipeline->PipelineName = TEXT("pipe0");
+	Pipeline->GraphNodes.Add(TEXT("pose_landmarks"));
+
+	Observer->PipelineName = TEXT("pipe0");
+	Observer->StreamName = TEXT("pose_world_landmarks");
+	Observer->LandmarkListType = EMediaPipeLandmarkListType::LandmarkList;
+	Observer->AxisX = EMediaPipeLandmarkAxisMapping::Z;
+	Observer->AxisY = EMediaPipeLandmarkAxisMapping::X;
+	Observer->AxisZ = EMediaPipeLandmarkAxisMapping::NegY;
+	Observer->WorldScale = FVector(100, 100, 100);
+	Observer->MinVisibility = 0.5;
+	Observer->MinPresence = 0.5;
+
+	Pipeline->AddObserver(Observer);
+}
+
+void AMediaPipeCppExample::OnConstruction(const FTransform& Transform)
+{
+	Super::OnConstruction(Transform);
+	RegisterAllComponents();
+}
+
+void AMediaPipeCppExample::BeginPlay()
+{
+	Super::BeginPlay();
+	Pipeline->Start();
+}
+
+void AMediaPipeCppExample::EndPlay(const EEndPlayReason::Type EndPlayReason)
+{
+	Pipeline->Stop();
+	Super::EndPlay(EndPlayReason);
+}
+
+void AMediaPipeCppExample::Tick(float DeltaSeconds)
+{
+	if (Observer && Observer->HaveDetections())
+	{
+		int ObjectId = 0;
+		const auto& Landmarks = Observer->GetLandmarkList(ObjectId);
+		const int Count = Landmarks.Num();
+
+		auto* World = GetWorld();
+		auto Transform = GetActorTransform();
+
+		for (int i = 0; i < Count; i++)
+		{
+			const auto& L = Landmarks[i];
+			if ((L.Visibility > Observer->MinVisibility) && (L.Presence > Observer->MinPresence))
+			{
+				auto Pos = Transform.TransformPosition(L.Pos);
+				DrawDebugPoint(World, Pos, 10.0f, FColor(255, 0, 0));
+			}
+		}
+	}
+}

Source/MediaPipeDemo/MediaPipeCppExample.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include "MediaPipePipelineComponent.h"
+#include "MediaPipeLandmarkObserverComponent.h"
+#include "MediaPipeCppExample.generated.h"
+
+UCLASS(ClassGroup="MediaPipe")
+class AMediaPipeCppExample : public AActor
+{
+	GENERATED_BODY()
+
+public:
+	AMediaPipeCppExample();
+	void OnConstruction(const FTransform& Transform) override;
+	void BeginPlay() override;
+	void EndPlay(const EEndPlayReason::Type EndPlayReason) override;
+	void Tick(float DeltaSeconds) override;
+
+	UPROPERTY()
+	USceneComponent* Root = nullptr;
+
+	UPROPERTY()
+	UMediaPipePipelineComponent* Pipeline = nullptr;
+
+	UPROPERTY()
+	UMediaPipeLandmarkObserverComponent* Observer = nullptr;
+};

Source/MediaPipeDemo/MediaPipeDemo.Build.cs

@@ -1,23 +1,19 @@
-// Fill out your copyright notice in the Description page of Project Settings.
-
 using UnrealBuildTool;
 
 public class MediaPipeDemo : ModuleRules
 {
-	public MediaPipeDemo(ReadOnlyTargetRules Target) : base(Target)
-	{
-		PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;
-
-		PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore" });
-
-		PrivateDependencyModuleNames.AddRange(new string[] {  });
+    public MediaPipeDemo(ReadOnlyTargetRules Target) : base(Target)
+    {
+        PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;
 
-		// Uncomment if you are using Slate UI
-		// PrivateDependencyModuleNames.AddRange(new string[] { "Slate", "SlateCore" });
-
-		// Uncomment if you are using online features
-		// PrivateDependencyModuleNames.Add("OnlineSubsystem");
+        PublicDependencyModuleNames.AddRange(new string[] {
+            "Core",
+            "CoreUObject",
+            "Engine",
+            "InputCore",
+            "MediaPipe"
+        });
 
-		// To include OnlineSubsystemSteam, add it to the plugins section in your uproject file with the Enabled attribute set to true
-	}
+        PrivateDependencyModuleNames.AddRange(new string[] { });
+    }
 }