/**
 * Mandelbulber v2, a 3D fractal generator  _%}}i*<.        ____                _______
 * Copyright (C) 2020 Mandelbulber Team   _>]|=||i=i<,     / __ \___  ___ ___  / ___/ /
 *                                        \><||i|=>>%)    / /_/ / _ \/ -_) _ \/ /__/ /__
 * This file is part of Mandelbulber.     )<=i=]=|=i<>    \____/ .__/\__/_//_/\___/____/
 * The project is licensed under GPLv3,   -<>>=|><|||`        /_/
 * see also COPYING file in this folder.    ~+{i%+++
 *
 * abs add tglad fold,  z = fabs( z + constant) -fabs( z - constant) - z:
 * with a fold tweak option
 * This formula contains aux.color

 * This file has been autogenerated by tools/populateUiInformation.php
 * from the file "fractal_transf_abs_add_tglad_fold.cpp" in the folder formula/definition
 * D O    N O T    E D I T    T H I S    F I L E !
 */

REAL4 TransfAbsAddTgladFoldIteration(REAL4 z, __constant sFractalCl *fractal, sExtendedAuxCl *aux)
{
	REAL4 limit = fractal->transformCommon.additionConstant000;
	REAL colorAdd = 0.0f;
	REAL4 oldZ = z;
	z = fabs(z + limit) - fabs(z - limit) - z;

	if (fractal->transformCommon.functionEnabledFalse
			&& aux->i >= fractal->transformCommon.startIterationsA
			&& aux->i < fractal->transformCommon.stopIterationsA)
	{
		REAL4 length = 2.0f * limit;
		REAL4 tgladS = 1.0f / length;
		REAL4 Add = (REAL4){0.0f, 0.0f, 0.0f, 0.0f};

		if (fabs(z.x) < limit.x) Add.x = z.x * z.x * tgladS.x;
		if (fabs(z.y) < limit.y) Add.y = z.y * z.y * tgladS.y;
		if (fabs(z.z) < limit.z) Add.z = z.z * z.z * tgladS.z;

		if (fabs(z.x) > limit.x && fabs(z.x) < length.x)
			Add.x = (length.x - fabs(z.x)) * (length.x - fabs(z.x)) * tgladS.x;
		if (fabs(z.y) > limit.y && fabs(z.y) < length.y)
			Add.y = (length.y - fabs(z.y)) * (length.y - fabs(z.y)) * tgladS.y;
		if (fabs(z.z) > limit.z && fabs(z.z) < length.z)
			Add.z = (length.z - fabs(z.z)) * (length.z - fabs(z.z)) * tgladS.z;
		Add *= fractal->transformCommon.offset000;
		z.x = (z.x - (sign(z.x) * (Add.x)));
		z.y = (z.y - (sign(z.y) * (Add.y)));
		z.z = (z.z - (sign(z.z) * (Add.z)));
	}
	// aux->color mode 1
	if (fractal->foldColor.auxColorEnabledFalse)
	{
		if (z.x != oldZ.x) colorAdd += fractal->mandelbox.color.factor.x;
		if (z.y != oldZ.y) colorAdd += fractal->mandelbox.color.factor.y;
		if (z.z != oldZ.z) colorAdd += fractal->mandelbox.color.factor.z;
	}
	// mode 2
	if (fractal->transformCommon.functionEnabledCxFalse)
	{
		if (fabs(z.x) > limit.x)
		{
			colorAdd += fractal->mandelbox.color.factor.x;
		}
		else
		{
			colorAdd += fractal->mandelbox.color.factor.x * (1.0f - (limit.x - fabs(z.x)) / limit.x);
		}

		if (fabs(z.y) > limit.y)
		{
			colorAdd += fractal->mandelbox.color.factor.y;
		}
		else
		{
			colorAdd += fractal->mandelbox.color.factor.y * (1.0f - (limit.y - fabs(z.y)) / limit.y);
		}

		if (fabs(z.z) > limit.z)
		{
			colorAdd += fractal->mandelbox.color.factor.z;
		}
		else
		{
			colorAdd += fractal->mandelbox.color.factor.z * (1.0f - (limit.z - fabs(z.z)) / limit.z);
		}
	}

	// mode 3
	if (fractal->transformCommon.functionEnabledCyFalse)
	{
		// REAL valMinusLim = limit;
		if (z.x != oldZ.x)
		{
			colorAdd += fractal->mandelbox.color.factor.x * (fabs(z.x) - limit.x) / limit.x;
		}
		if (z.y != oldZ.y)
		{
			colorAdd += fractal->mandelbox.color.factor.y * (fabs(z.y) - limit.y) / limit.y;
		}
		if (z.z != oldZ.z)
		{
			colorAdd += fractal->mandelbox.color.factor.z * (fabs(z.z) - limit.z) / limit.z;
		}
	}
	aux->color += colorAdd;
	return z;
}