/* Copyright (C) 2021 Hugo ATTAL - All Rights Reserved
* This plugin is downloadable from the Unreal Engine Marketplace
*/

#include "lib/Shapes.usf"

struct DarkerUIButtonCut
{
	static float4 ComputeButton(float2 PixelSize, float2 UVs, float3 BackgroundColor, float3 BorderColor, float Part, float Radius)
	{
		Radius = min(Radius, min(PixelSize.x, PixelSize.y) / 2 - 1);

		if (Part < 0)
		{
			UVs.x = min(UVs.x, 0.5);
		}
		else if (Part > 0)
		{
			UVs.x = max(UVs.x, 0.5);
		}
		else
		{
			UVs.x = 0.5;
		}

		const float2 Location = UVs * PixelSize;
		const float Alpha = DarkerUIShapes::IsInRoundedRectangle(Location, float2(0, 0), PixelSize - float2(0, 0), Radius + 1);
		const float3 Color = lerp(
			BorderColor, BackgroundColor,
			DarkerUIShapes::IsInRoundedRectangle(Location, float2(1, 1), PixelSize - float2(1, 1), Radius));
		return float4(Color, Alpha);
	}
};

/*
#include "/DarkerNodes/ButtonCut.usf"
return DarkerUIButtonCut::ComputeButton(PixelSize, UVs, BackgroundColor, BorderColor, Part, Radius);
*/