[Unreal] 디버깅용 드로워 이용 방법 (Draw Debug)

Debug Draw

Unreal engine 개발 과정에서 화면상에 원하는 도형을 그려서, 디버깅을 수월하게 도와주는 함수들에 대한 예제이다. DrawDebugHelpers.h 헤더파일 내에 구현 되어있다.

Draw Debug

#include "DrawDebugHelpers.h"

...

void Examples::DebugDrawExample(UWorld* World)
{
	FVector StartOffset = FVector(0, 0, 200);
	FVector LocationOne = FVector(0, 0, 600) + StartOffset;
	FVector LocationTwo = FVector(0, -600, 600) + StartOffset;
	FVector LocationThree = FVector(0, 600, 600) + StartOffset;
	FVector LocationFour = FVector(-300, 0, 600) + StartOffset;
	FVector LocationFive = FVector(-400, -600, 600) + StartOffset;

	DrawDebugPoint(World, LocationOne, 200, FColor(52, 220, 239), true);

	DrawDebugSphere(World, LocationTwo, 200, 26, FColor(181, 0, 0), true, -1, 0, 2);

	DrawDebugCircle(World, LocationFour, 200, 50, FColor(0, 0, 0), true, -1, 0, 10);

	DrawDebugBox(World, LocationFive, FVector(100, 100, 100), FColor::Purple, true, -1, 0, 10);

	DrawDebugLine(World, LocationTwo, LocationThree, FColor::Emerald, true, -1, 0, 10);

	DrawDebugDirectionalArrow(World, FVector(-300, 600, 600), FVector(-300, -600, 600), 120.f, FColor::Magenta, true, -1.f, 0, 5.f);

	DrawDebugCrosshairs(World, FVector(0, 0, 1000), FRotator(0, 0, 0), 500.f, FColor::White, true, -1.f, 0);
}

Draw Torque

void Examples::DebugDrawExample(UWorld* World)
{
	FVector StartOffset = FVector(-200, 0, 250);
	FVector LocationFour = FVector(-300, 0, 600) + StartOffset;
	
	const FVector CPos = StartOffset;
	const FVector FPos(CPos + FVector(-80, 50, 125));
	const FVector CF(FPos - CPos);
	const FVector Force = FVector(-50, -50, 50);
	const FVector Torque = FVector::CrossProduct(CF, Force);

	const FVector SideCF = CF.RotateAngleAxis(90, Torque.GetSafeNormal());
	
	DrawDebugSphere(World, CPos, 5, 26, FColor(181, 0, 0), true, -1, 0, 2);
	DrawDebugSphere(World, FPos, 5, 26, FColor(0, 181, 0), true, -1, 0, 2);

	DrawDebugDirectionalArrow(World, FPos, FPos + Force, 120.f, FColor::Magenta, true, -1.f, 0, 2.f);
	DrawDebugDirectionalArrow(World, CPos, CPos + Torque, 120.f, FColor::Black, true, -1.f, 0, 2.f);
	DrawDebugDirectionalArrow(World, CPos, CPos + CF, 120.f, FColor::Red, true, -1.f, 0, 2.f);
	DrawDebugDirectionalArrow(World, CPos, CPos + SideCF, 120.f, FColor::White, true, -1.f, 0, 2.f);

	DrawDebugCircle(World, CPos, CF.Size(), 50, FColor(0, 0, 0), true, -1, 0, 2, CF.GetSafeNormal(), SideCF.GetSafeNormal(), false);
}

출처 : [Unreal] 디버깅용 드로워 이용 방법 (Draw Debug) (tistory.com)