93 lines
3.8 KiB
C++
93 lines
3.8 KiB
C++
|
// Copyright Epic Games, Inc. All Rights Reserved.
|
||
|
|
|
||
|
|
#include "SCircumferenceMarkerWidget.h"
|
||
|
|
#include "Engine/UserInterfaceSettings.h"
|
||
|
|
#include "Kismet/GameplayStatics.h"
|
||
|
|
|
||
|
|
SCircumferenceMarkerWidget::SCircumferenceMarkerWidget()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
void SCircumferenceMarkerWidget::Construct(const FArguments& InArgs)
|
||
|
|
{
|
||
|
|
MarkerBrush = InArgs._MarkerBrush;
|
||
|
|
MarkerList = InArgs._MarkerList;
|
||
|
|
Radius = InArgs._Radius;
|
||
|
|
bColorAndOpacitySet = InArgs._ColorAndOpacity.IsSet();
|
||
|
|
ColorAndOpacity = InArgs._ColorAndOpacity;
|
||
|
|
}
|
||
|
|
|
||
|
|
FSlateRenderTransform SCircumferenceMarkerWidget::GetMarkerRenderTransform(const FCircumferenceMarkerEntry& Marker, const float BaseRadius, const float HUDScale) const
|
||
|
|
{
|
||
|
|
// Determine the radius to use for the corners
|
||
|
|
float XRadius = BaseRadius;
|
||
|
|
float YRadius = BaseRadius;
|
||
|
|
if (bReticleCornerOutsideSpreadRadius)
|
||
|
|
{
|
||
|
|
XRadius += MarkerBrush->ImageSize.X * 0.5f;
|
||
|
|
YRadius += MarkerBrush->ImageSize.X * 0.5f;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get the angle and orientation for this reticle corner
|
||
|
|
const float LocalRotationRadians = FMath::DegreesToRadians(Marker.ImageRotationAngle);
|
||
|
|
const float PositionAngleRadians = FMath::DegreesToRadians(Marker.PositionAngle);
|
||
|
|
|
||
|
|
// First rotate the corner image about the origin
|
||
|
|
FSlateRenderTransform RotateAboutOrigin(Concatenate(FVector2D(-MarkerBrush->ImageSize.X * 0.5f, -MarkerBrush->ImageSize.Y * 0.5f), FQuat2D(LocalRotationRadians), FVector2D(MarkerBrush->ImageSize.X * 0.5f, MarkerBrush->ImageSize.Y * 0.5f)));
|
||
|
|
|
||
|
|
// Move the rotated image to the right place on the spread radius
|
||
|
|
return TransformCast<FSlateRenderTransform>(Concatenate(RotateAboutOrigin, FVector2D(XRadius * FMath::Sin(PositionAngleRadians) * HUDScale, -YRadius * FMath::Cos(PositionAngleRadians) * HUDScale)));
|
||
|
|
}
|
||
|
|
|
||
|
|
int32 SCircumferenceMarkerWidget::OnPaint(const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled) const
|
||
|
|
{
|
||
|
|
const bool bIsEnabled = ShouldBeEnabled(bParentEnabled);
|
||
|
|
const ESlateDrawEffect DrawEffects = bIsEnabled ? ESlateDrawEffect::None : ESlateDrawEffect::DisabledEffect;
|
||
|
|
const FVector2D LocalCenter = AllottedGeometry.GetLocalPositionAtCoordinates(FVector2D(0.5f, 0.5f));
|
||
|
|
|
||
|
|
const bool bDrawMarkers = (MarkerList.Num() > 0) && (MarkerBrush != nullptr);
|
||
|
|
|
||
|
|
if (bDrawMarkers == true)
|
||
|
|
{
|
||
|
|
const FLinearColor MarkerColor = bColorAndOpacitySet ?
|
||
|
|
ColorAndOpacity.Get().GetColor(InWidgetStyle) :
|
||
|
|
(InWidgetStyle.GetColorAndOpacityTint() * MarkerBrush->GetTint(InWidgetStyle));
|
||
|
|
|
||
|
|
if (MarkerColor.A > KINDA_SMALL_NUMBER)
|
||
|
|
{
|
||
|
|
const float BaseRadius = Radius.Get();
|
||
|
|
const float ApplicationScale = GetDefault<UUserInterfaceSettings>()->ApplicationScale;
|
||
|
|
for (const FCircumferenceMarkerEntry& Marker : MarkerList)
|
||
|
|
{
|
||
|
|
const FSlateRenderTransform MarkerTransform = GetMarkerRenderTransform(Marker, BaseRadius, ApplicationScale);
|
||
|
|
|
||
|
|
const FPaintGeometry Geometry(AllottedGeometry.ToPaintGeometry(MarkerBrush->ImageSize, FSlateLayoutTransform(LocalCenter - (MarkerBrush->ImageSize * 0.5f)), MarkerTransform, FVector2D(0.0f, 0.0f)));
|
||
|
|
FSlateDrawElement::MakeBox(OutDrawElements, LayerId, Geometry, MarkerBrush, DrawEffects, MarkerColor);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return LayerId;
|
||
|
|
}
|
||
|
|
|
||
|
|
FVector2D SCircumferenceMarkerWidget::ComputeDesiredSize(float) const
|
||
|
|
{
|
||
|
|
check(MarkerBrush);
|
||
|
|
const float SampledRadius = Radius.Get();
|
||
|
|
return FVector2D((MarkerBrush->ImageSize.X + SampledRadius) * 2.0f, (MarkerBrush->ImageSize.Y + SampledRadius) * 2.0f);
|
||
|
|
}
|
||
|
|
|
||
|
|
void SCircumferenceMarkerWidget::SetRadius(float NewRadius)
|
||
|
|
{
|
||
|
|
if (Radius.IsBound() || (Radius.Get() != NewRadius))
|
||
|
|
{
|
||
|
|
Radius = NewRadius;
|
||
|
|
Invalidate(EInvalidateWidgetReason::Layout);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void SCircumferenceMarkerWidget::SetMarkerList(TArray<FCircumferenceMarkerEntry>& NewMarkerList)
|
||
|
|
{
|
||
|
|
MarkerList = NewMarkerList;
|
||
|
|
}
|