#include "CommonT6.h"

#include "Utils/Pack.h"

#include <algorithm>
#include <cmath>

using namespace T6;

PackedTexCoords Common::Vec2PackTexCoords(const float (&in)[2])
{
    return PackedTexCoords{pack32::Vec2PackTexCoordsUV(in)};
}

PackedUnitVec Common::Vec3PackUnitVec(const float (&in)[3])
{
    return PackedUnitVec{pack32::Vec3PackUnitVecThirdBased(in)};
}

GfxColor Common::Vec4PackGfxColor(const float (&in)[4])
{
    return GfxColor{pack32::Vec4PackGfxColor(in)};
}

void Common::Vec2UnpackTexCoords(const PackedTexCoords& in, float (&out)[2])
{
    pack32::Vec2UnpackTexCoordsUV(in.packed, out);
}

void Common::Vec3UnpackUnitVec(const PackedUnitVec& in, float (&out)[3])
{
    pack32::Vec3UnpackUnitVecThirdBased(in.packed, out);
}

void Common::Vec4UnpackGfxColor(const GfxColor& in, float (&out)[4])
{
    pack32::Vec4UnpackGfxColor(in.packed, out);
}

float Common::LinearToDbspl(const float linear)
{
    const auto db = 20.0f * std::log10(std::max(linear, 0.0000152879f));
    if (db > -95.0f)
        return db + 100.0f;

    return 0;
}

float Common::DbsplToLinear(const float dbsplValue)
{
    return std::pow(10.0f, (dbsplValue - 100.0f) / 20.0f);
}

float Common::HertzToCents(const float hertz)
{
    return 1200.0f * std::log2(hertz);
}

float Common::CentsToHertz(const float cents)
{
    return std::pow(2.0f, cents / 1200.0f);
}