UKismetSystemLibrary::DrawDebugConeInDegrees

function Engine Blueprint Since 4.9

#include "Kismet/KismetSystemLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintCallable

Description

Draws a wireframe cone with angles specified in degrees, commonly used to visualize a field-of-view or perception cone.

Caveats & Gotchas

• In the Blueprint palette this node's DisplayName is just "Draw Debug Cone" — it replaces the older radians-based DrawDebugCone, which still exists in C++ under its own name.
• AngleWidth and AngleHeight are half-angles, so a 90-degree total field of view means passing 45 for both, not 90.
• Compiled out entirely in Shipping and Test builds since the UFUNCTION is DevelopmentOnly.

Signature

static void DrawDebugConeInDegrees(const UObject* WorldContextObject, const FVector Origin, const FVector Direction, float Length=100.f, float AngleWidth=45.f, float AngleHeight=45.f, int32 NumSides = 12, FLinearColor LineColor = FLinearColor::White, float Duration=0.f, float Thickness = 0.f, EDrawDebugSceneDepthPriorityGroup DepthPriority = EDrawDebugSceneDepthPriorityGroup::World)

Parameters

Name	Type	Description	Default
WorldContextObject	const UObject*	World context used to resolve which world to draw in.	—
Origin	const FVector	World-space apex of the cone.	—
Direction	const FVector	Direction the cone points, from the apex.	—
Length	float	Length of the cone from apex to base.	100.f
AngleWidth	float	Half-angle of the cone in the horizontal plane, in degrees.	45.f
AngleHeight	float	Half-angle of the cone in the vertical plane, in degrees.	45.f
NumSides	int32	Number of sides used to approximate the cone's base.	12
LineColor	FLinearColor	Color of the drawn cone.	FLinearColor::White
Duration	float	How long the cone persists, in seconds. 0 draws for a single frame.	0.f
Thickness	float	Line thickness in screen pixels.	0.f
DepthPriority	EDrawDebugSceneDepthPriorityGroup	Whether the cone is depth-tested against the scene or always drawn in the foreground.	EDrawDebugSceneDepthPriorityGroup::World

Return Type

void

Example

Visualize a perception cone C++

UKismetSystemLibrary::DrawDebugConeInDegrees(
    this,
    GetActorLocation(),
    GetActorForwardVector(),
    800.f,
    60.f,
    45.f,
    24,
    FLinearColor::Green,
    0.f);

Version History

Introduced in: 4.9

Version	Status	Notes
5.6	stable	—

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