Function xSpline3_EvalSeg

src/SB/Core/x/xSpline.cpp:448–494

}

void xSpline3_EvalSeg(xSpline3* spl, F32 u, U32 deriv, xVec3* o)
{
    xCoef3 tempCoef;
    F32 temp_u;
    F32 new_u;
    U32 seg;

    if ((U16)spl->type == 4)
    {
        EvalBspline3(spl, u, deriv, o);
        return;
    }
    if (u < 0.0f)
    {
        u = 0.0f;
    }
    temp_u = floorf(u);
    seg = (U32)temp_u;
    if (seg >= spl->N)
    {
        new_u = 1.0f;
        seg = spl->N - 1;
    }
    else
    {
        new_u = u - temp_u;
    }

    switch (spl->type)
    {
    case 1:
        EvalCoef3(spl->coef + (seg * 0x30), new_u, deriv, o);
        return;
    case 2:
        BasisToCoef3(&tempCoef, (f32(*)[4])sBasisHermite, spl->points + (seg * 0xC),
                     spl->p12 + (seg * 0x18), spl->p12 + (seg * 0x18) + 0xC,
                     spl->points + (seg * 0xC) + 0xC);
        EvalCoef3(&tempCoef, new_u, deriv, o);
        return;
    case 3:
        BasisToCoef3(&tempCoef, (F32(*)[4])sBasisBezier, spl->points + (seg * 0xC),
                     spl->p12 + (seg * 0x18), spl->p12 + (seg * 0x18) + 0xC,
                     spl->points + (seg * 0xC) + 0xC);
        EvalCoef3(&tempCoef, new_u, deriv, o);
        return;
    }
}

F32 ArcEvalIterate(xSpline3* spl, F32 s, U32 deriv, xVec3* o, U32 iterations)
{