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| #include "UI/Weapons/SCircumferenceMarkerWidget.h"
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| #include "Engine/UserInterfaceSettings.h"
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| #include "Styling/SlateBrush.h"
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| #include UE_INLINE_GENERATED_CPP_BY_NAME(SCircumferenceMarkerWidget)
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| class FPaintArgs;
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| class FSlateRect;
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| SCircumferenceMarkerWidget::SCircumferenceMarkerWidget()
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| {
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| }
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| void SCircumferenceMarkerWidget::Construct(const FArguments& InArgs)
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| {
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| MarkerBrush = InArgs._MarkerBrush;
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| MarkerList = InArgs._MarkerList;
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| Radius = InArgs._Radius;
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| bColorAndOpacitySet = InArgs._ColorAndOpacity.IsSet();
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| ColorAndOpacity = InArgs._ColorAndOpacity;
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| }
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| FSlateRenderTransform SCircumferenceMarkerWidget::GetMarkerRenderTransform(const FCircumferenceMarkerEntry& Marker, const float BaseRadius, const float HUDScale) const
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| {
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| float XRadius = BaseRadius;
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| float YRadius = BaseRadius;
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| if (bReticleCornerOutsideSpreadRadius)
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| {
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| XRadius += MarkerBrush->ImageSize.X * 0.5f;
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| YRadius += MarkerBrush->ImageSize.X * 0.5f;
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| }
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| const float LocalRotationRadians = FMath::DegreesToRadians(Marker.ImageRotationAngle);
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| const float PositionAngleRadians = FMath::DegreesToRadians(Marker.PositionAngle);
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| 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)));
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| return TransformCast<FSlateRenderTransform>(Concatenate(RotateAboutOrigin, FVector2D(XRadius * FMath::Sin(PositionAngleRadians) * HUDScale, -YRadius * FMath::Cos(PositionAngleRadians) * HUDScale)));
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| }
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| int32 SCircumferenceMarkerWidget::OnPaint(const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled) const
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| {
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| const bool bIsEnabled = ShouldBeEnabled(bParentEnabled);
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| const ESlateDrawEffect DrawEffects = bIsEnabled ? ESlateDrawEffect::None : ESlateDrawEffect::DisabledEffect;
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| const FVector2D LocalCenter = AllottedGeometry.GetLocalPositionAtCoordinates(FVector2D(0.5f, 0.5f));
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| const bool bDrawMarkers = (MarkerList.Num() > 0) && (MarkerBrush != nullptr);
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| if (bDrawMarkers == true)
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| {
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| const FLinearColor MarkerColor = bColorAndOpacitySet ?
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| ColorAndOpacity.Get().GetColor(InWidgetStyle) :
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| (InWidgetStyle.GetColorAndOpacityTint() * MarkerBrush->GetTint(InWidgetStyle));
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| if (MarkerColor.A > KINDA_SMALL_NUMBER)
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| {
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| const float BaseRadius = Radius.Get();
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| const float ApplicationScale = GetDefault<UUserInterfaceSettings>()->ApplicationScale;
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| for (const FCircumferenceMarkerEntry& Marker : MarkerList)
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| {
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| const FSlateRenderTransform MarkerTransform = GetMarkerRenderTransform(Marker, BaseRadius, ApplicationScale);
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| const FPaintGeometry Geometry(AllottedGeometry.ToPaintGeometry(MarkerBrush->ImageSize, FSlateLayoutTransform(LocalCenter - (MarkerBrush->ImageSize * 0.5f)), MarkerTransform, FVector2D(0.0f, 0.0f)));
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| FSlateDrawElement::MakeBox(OutDrawElements, LayerId, Geometry, MarkerBrush, DrawEffects, MarkerColor);
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| }
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| }
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| }
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| return LayerId;
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| }
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| FVector2D SCircumferenceMarkerWidget::ComputeDesiredSize(float) const
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| {
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| check(MarkerBrush);
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| const float SampledRadius = Radius.Get();
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| return FVector2D((MarkerBrush->ImageSize.X + SampledRadius) * 2.0f, (MarkerBrush->ImageSize.Y + SampledRadius) * 2.0f);
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| }
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| void SCircumferenceMarkerWidget::SetRadius(float NewRadius)
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| {
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| if (Radius.IsBound() || (Radius.Get() != NewRadius))
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| {
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| Radius = NewRadius;
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| Invalidate(EInvalidateWidgetReason::Layout);
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| }
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| }
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| void SCircumferenceMarkerWidget::SetMarkerList(TArray<FCircumferenceMarkerEntry>& NewMarkerList)
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| {
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| MarkerList = NewMarkerList;
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| }
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