//
// Generated By: dol2asm
// Translation Unit: Z2Calc
//

#include "Z2AudioLib/Z2Calc.h"
#include "JSystem/JMath/random.h"
#include "dol2asm.h"
#include "global.h"
#include "msl_c/math.h"

//
// Declarations:
//

/* 802A968C-802A96F4 2A3FCC 0068+00 1/1 16/16 0/0 .text            linearTransform__6Z2CalcFfffffb
 */
f32 Z2Calc::linearTransform(f32 param1, f32 param2, f32 param3, f32 param4, f32 param5,
                            bool param6) {
    f32 temp;

    temp = param4 + (param1 - param2) * ((param5 - param4) / (param3 - param2));

    if (param6) {
        return temp;
    } else if (param4 < param5) {
        if (temp > param5) {
            return param5;
        } else if (temp < param4) {
            return param4;
        } else {
            return temp;
        }
    } else if (temp > param4) {
        return param4;
    } else if (temp < param5) {
        return param5;
    } else {
        return temp;
    }
}

/* ############################################################################################## */
/* 80455820-80455824 003E20 0004+00 0/0 1/1 0/0 .sdata2          cEqualCSlope__6Z2Calc */
SECTION_SDATA2 f32 Z2Calc::cEqualCSlope = 1.0f;

/* 80455824-80455828 003E24 0004+00 0/0 1/1 0/0 .sdata2          cEqualPSlope__6Z2Calc */
SECTION_SDATA2 f32 Z2Calc::cEqualPSlope = 0.5f;

/* 802A96F4-802A9814 2A4034 0120+00 0/0 29/29 0/0 .text
 * getParamByExp__6Z2CalcFffffffQ26Z2Calc9CurveSign             */
f32 Z2Calc::getParamByExp(f32 f1, f32 f2, f32 f3, f32 f4, f32 f5, f32 f6, Z2Calc::CurveSign sign) {
    f32 out;
    if (sign == Z2Calc::CURVE_SIGN_1) {
        f32 tmp = exp(Z2Calc::linearTransform(f1, f2, f3, 0.0f, f4, true));
        out = Z2Calc::linearTransform(tmp, 1.0f, exp(f4), f5, f6, true);
    } else if (sign == Z2Calc::CURVE_SIGN_0) {
        f32 tmp = exp(Z2Calc::linearTransform(f1, f2, f3, f4, 0.0f, true));
        out = Z2Calc::linearTransform(tmp, exp(f4), 1.0f, f5, f6, true);
    } else {
        out = Z2Calc::linearTransform(f1, f2, f3, f5, f6, false);
    }
    if (out > f6) {
        return f6;
    }
    if (out < f5) {
        return f5;
    }
    return out;
}

/* 802A9814-802A98D4 2A4154 00C0+00 0/0 2/2 0/0 .text            getRandom__6Z2CalcFfff */
f32 Z2Calc::getRandom(f32 f1, f32 f2, f32 f3) {
    f32 tmp = 2.0f * f3;
    f32 tmp2 = (1.0f - f3) * -2.0f;
    f1 *= Z2Calc::getRandom_0_1() < f3 ? tmp : tmp2;
    f32 tmp3 = pow(Z2Calc::getRandom_0_1(), f2);
    return tmp3 * f1;
}

/* 802A98D4-802A9944 2A4214 0070+00 1/1 1/1 0/0 .text            getRandom_0_1__6Z2CalcFv */
f32 Z2Calc::getRandom_0_1(void) {
    static JMath::TRandom_fast_ oRandom(0);
    return oRandom.get_ufloat_1();
}

/* 802A9944-802A9958 2A4284 0014+00 0/0 1/1 0/0 .text            setParam__Q26Z2Calc8FNoise1fFfff */
void Z2Calc::FNoise1f::setParam(f32 param1, f32 param2, f32 param3) {
    this->unk0 = param1;
    this->unk4 = param1;
    this->unk12 = param2;
    this->unk8 = param3;
}

/* 802A9958-802A99A0 2A4298 0048+00 1/1 0/0 0/0 .text            tau__Q26Z2Calc8FNoise1fFf */
f32 Z2Calc::FNoise1f::tau(f32 param1) {
    f32 temp1;
    f32 temp2;

    temp1 = param1;
    temp2 = temp1 + (temp1 * temp1);

    if (temp2 > 1.0f) {
        temp2 = temp2 - 1.0f;

        if (temp1 < this->unk12) {
            temp2 = temp2 + this->unk12;
        }

        return temp2;
    } else if (temp1 < this->unk12) {
        temp2 = temp2 + this->unk12;
    }
    return temp2;
}

/* 802A99A0-802A9A34 2A42E0 0094+00 0/0 5/5 0/0 .text            calcNoise1f__Q26Z2Calc8FNoise1fFv
 */
f32 Z2Calc::FNoise1f::calcNoise1f(void) {
    f32 temp1;
    f32 temp2;

    temp1 = this->unk0;

    if (this->unk0 < this->unk4) {
        this->unk0 = temp1 + this->unk8;

        if (this->unk0 < this->unk4) {
            return this->unk0;
        }
    } else {
        this->unk0 = temp1 - this->unk8;

        if (this->unk0 > this->unk4) {
            return this->unk0;
        }
    }
    this->unk0 = this->unk4;
    temp2 = tau(this->unk0);
    this->unk4 = temp2;

    return this->unk0;
}