invert3x3()

bool fl::colorimetric_detail::invert3x3 ( const float in[3][3], float out[3][3] )

inline

Definition at line 75 of file rgbw_colorimetric.h.

                                                                         {
    const float a = in[0][0], b = in[0][1], c = in[0][2];
    const float d = in[1][0], e = in[1][1], f = in[1][2];
    const float g = in[2][0], h = in[2][1], i = in[2][2];
    const float det = a * (e * i - f * h) - b * (d * i - f * g) + c * (d * h - e * g);
    if (fl::fabs(det) < 1e-20f) {
        return false;
    }
    const float inv_det = 1.0f / det;
    out[0][0] = (e * i - f * h) * inv_det;
    out[0][1] = (c * h - b * i) * inv_det;
    out[0][2] = (b * f - c * e) * inv_det;
    out[1][0] = (f * g - d * i) * inv_det;
    out[1][1] = (a * i - c * g) * inv_det;
    out[1][2] = (c * d - a * f) * inv_det;
    out[2][0] = (d * h - e * g) * inv_det;
    out[2][1] = (b * g - a * h) * inv_det;
    out[2][2] = (a * e - b * d) * inv_det;
    return true;
}

References fl::fabs(), and FL_NOEXCEPT.

Referenced by build_source_matrix().

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