Function GenerateColorShift

TombEngine/Math/Utils.cpp:116–155

	}

	std::pair<std::array<int, 3>, std::array<int, 3>> GenerateColorShift(Vector3 mainColor, Vector3 additionalColor)
	{
		std::array<int, 3> colorS =
		{
			int(mainColor.x * UCHAR_MAX),
			int(mainColor.y * UCHAR_MAX),
			int(mainColor.z * UCHAR_MAX)
		};

		std::array<int, 3> colorD =
		{
			int(additionalColor.x * UCHAR_MAX),
			int(additionalColor.y * UCHAR_MAX),
			int(additionalColor.z * UCHAR_MAX)
		};

		// Determine weakest RGB component
		int lowestS = *std::min_element(colorS.begin(), colorS.end());
		int lowestD = *std::min_element(colorD.begin(), colorD.end());

		constexpr auto CHROMA_SHIFT = 32;
		constexpr auto LUMA_SHIFT = 0.5f;

		for (int i = 0; i < 3; i++)
		{
			if (colorS[i] != lowestS)
				colorS[i] += Random::GenerateInt(-CHROMA_SHIFT, CHROMA_SHIFT);

			if (colorD[i] != lowestD)
				colorD[i] += Random::GenerateInt(-CHROMA_SHIFT, CHROMA_SHIFT);

			colorS[i] = int(colorS[i] * (1.0f + Random::GenerateFloat(-LUMA_SHIFT, 0)));
			colorD[i] = int(colorD[i] * (1.0f + Random::GenerateFloat(-LUMA_SHIFT, 0)));

			colorS[i] = std::clamp(colorS[i], 0, UCHAR_MAX);
			colorD[i] = std::clamp(colorD[i], 0, UCHAR_MAX);
		}

		return { colorS, colorD };
	}

	Vector3 Screen(const Vector3& ambient, const Vector3& tint)
	{