/** Loc is an anchor point in the world to guide which part of the infinite plane to draw. */
void DrawDebugSolidPlane(const UWorld* InWorld, FPlane const& P, FVector const& Loc, float Size, FColor const& Color, bool bPersistent, float LifeTime, uint8 DepthPriority)
{
// no debug line drawing on dedicated server
if (GEngine->GetNetMode(InWorld) != NM_DedicatedServer)
{
FVector const ClosestPtOnPlane = Loc - P.PlaneDot(Loc) * P;
FVector U, V;
P.FindBestAxisVectors(U, V);
U *= Size;
V *= Size;
TArray<FVector> Verts;
Verts.AddUninitialized(4);
Verts[0] = ClosestPtOnPlane + U + V;
Verts[1] = ClosestPtOnPlane - U + V;
Verts[2] = ClosestPtOnPlane + U - V;
Verts[3] = ClosestPtOnPlane - U - V;
TArray<int32> Indices;
Indices.AddUninitialized(6);
Indices[0] = 0; Indices[1] = 2; Indices[2] = 1;
Indices[3] = 1; Indices[4] = 2; Indices[5] = 3;
// plane quad
DrawDebugMesh(InWorld, Verts, Indices, Color, bPersistent, LifeTime, DepthPriority);
// arrow indicating normal
DrawDebugDirectionalArrow(InWorld, ClosestPtOnPlane, ClosestPtOnPlane + P * 16.f, 8.f, FColor::White, bPersistent, LifeTime, DepthPriority);
}
}
void FGameplayDebuggerShape::Draw(UWorld* World, FGameplayDebuggerCanvasContext& Context)
{
FVector DescLocation;
switch (Type)
{
case EGameplayDebuggerShape::Point:
if (ShapeData.Num() == 2 && ShapeData[1].X > 0)
{
DrawDebugSphere(World, ShapeData[0], ShapeData[1].X, 16, Color);
DescLocation = ShapeData[0];
}
break;
case EGameplayDebuggerShape::Segment:
if (ShapeData.Num() == 3 && ShapeData[2].X > 0)
{
DrawDebugLine(World, ShapeData[0], ShapeData[1], Color, false, -1.0f, 0, ShapeData[2].X);
DescLocation = (ShapeData[0] + ShapeData[1]) * 0.5f;
}
break;
case EGameplayDebuggerShape::Box:
if (ShapeData.Num() == 2)
{
DrawDebugBox(World, ShapeData[0], ShapeData[1], Color);
DescLocation = ShapeData[0];
}
break;
case EGameplayDebuggerShape::Cone:
if (ShapeData.Num() == 3 && ShapeData[2].X > 0)
{
DrawDebugCone(World, ShapeData[0], ShapeData[1], ShapeData[2].X, PI * 0.5f, PI * 0.5f, 16, Color);
DescLocation = ShapeData[0];
}
break;
case EGameplayDebuggerShape::Cylinder:
if (ShapeData.Num() == 2)
{
DrawDebugCylinder(World, ShapeData[0] - FVector(0, 0, ShapeData[1].Z), ShapeData[0] + FVector(0, 0, ShapeData[1].Z), ShapeData[1].X, 16, Color);
DescLocation = ShapeData[0];
}
break;
case EGameplayDebuggerShape::Capsule:
if (ShapeData.Num() == 2)
{
DrawDebugCapsule(World, ShapeData[0], ShapeData[1].Z, ShapeData[1].X, FQuat::Identity, Color);
DescLocation = ShapeData[0];
}
break;
case EGameplayDebuggerShape::Polygon:
if (ShapeData.Num() > 0)
{
FVector MidPoint = FVector::ZeroVector;
TArray<int32> Indices;
for (int32 Idx = 0; Idx < ShapeData.Num(); Idx++)
{
Indices.Add(Idx);
MidPoint += ShapeData[Idx];
}
DrawDebugMesh(World, ShapeData, Indices, Color);
DescLocation = MidPoint / ShapeData.Num();
}
break;
default:
break;
}
if (Description.Len() && Context.IsLocationVisible(DescLocation))
{
const FVector2D ScreenLoc = Context.ProjectLocation(DescLocation);
Context.PrintAt(ScreenLoc.X, ScreenLoc.Y, Color, Description);
}
}
