Spline drawing function

Author: Nako Sung

Plugins/UnrealJS/Source/JavascriptUMG/JavascriptUMGBlueprintLibrary.cpp

@@ -9,4 +9,23 @@ FSlateColor UJavascriptUMGBlueprintLibrary::SlateColor_UseForeground()
 FSlateColor UJavascriptUMGBlueprintLibrary::SlateColor_UseSubduedForeground()
 {
 	return FSlateColor::UseSubduedForeground();
+}
+
+void UJavascriptUMGBlueprintLibrary::DrawSpaceSpline(UPARAM(ref) FPaintContext& Context, FVector2D InStart, FVector2D InStartDir, FVector2D InEnd, FVector2D InEndDir, float InThickness, FLinearColor InTint)
+{
+	Context.MaxLayer++;
+
+	auto Transform = Context.AllottedGeometry.GetAccumulatedLayoutTransform();
+
+	FSlateDrawElement::MakeDrawSpaceSpline(
+		Context.OutDrawElements,
+		Context.MaxLayer,
+		Transform.TransformPoint(InStart),
+		Transform.TransformVector(InStartDir),
+		Transform.TransformPoint(InEnd),
+		Transform.TransformVector(InEndDir),
+		Context.MyClippingRect,
+		InThickness * Transform.GetScale(),
+		ESlateDrawEffect::None,
+		InTint);
 }

Plugins/UnrealJS/Source/JavascriptUMG/JavascriptUMGBlueprintLibrary.h

@@ -6,7 +6,7 @@
  * 
  */
 UCLASS()
-class JAVASCRIPTUMG_API UJavascriptUMGBlueprintLibrary : public UUserWidget
+class JAVASCRIPTUMG_API UJavascriptUMGBlueprintLibrary : public UBlueprintFunctionLibrary
 {
 	GENERATED_BODY()
 
@@ -16,4 +16,7 @@ class JAVASCRIPTUMG_API UJavascriptUMGBlueprintLibrary : public UUserWidget
 
 	UFUNCTION(BlueprintCallable, Category = "Scripting | Javascript")
 	static FSlateColor SlateColor_UseSubduedForeground();
+
+	UFUNCTION(BlueprintCallable, Category = "Painting")
+	static void DrawSpaceSpline(UPARAM(ref) FPaintContext& Context, FVector2D InStart, FVector2D InStartDir, FVector2D InEnd, FVector2D InEndDir, float InThickness, FLinearColor InTint);
 };

Plugins/UnrealJS/Source/V8/Private/FunctionCall.cpp

@@ -63,7 +63,7 @@ namespace v8
 		if (bHasAnyOutParams)
 		{
 			FIsolateHelper I(isolate);
-			if (!value->IsObject())
+			if (value.IsEmpty() || !value->IsObject())
 			{
 				I.Throw(TEXT("..."));
 				return;

Plugins/UnrealJS/Source/V8/Public/JavascriptLibrary.h

@@ -120,5 +120,5 @@ class V8_API UJavascriptLibrary : public UBlueprintFunctionLibrary
 	static UModel* GetModel(UWorld* World);
 
 	UFUNCTION(BlueprintCallable, Category = "Scripting | Javascript")
-	static ULevel* GetLevel(AActor* Actor);
+	static ULevel* GetLevel(AActor* Actor);	
 };