Method getOneUnitOrthogonalVector

src/mathematics/Vector3.cpp:46–64

Return one unit orthogonal vector of the current vector

// Return one unit orthogonal vector of the current vector
Vector3 Vector3::getOneUnitOrthogonalVector() const {

    assert(length() > MACHINE_EPSILON);

    // Get the minimum element of the vector
    Vector3 vectorAbs(std::abs(x), std::abs(y), std::abs(z));
    int minElement = vectorAbs.getMinAxis();

    if (minElement == 0) {
        return Vector3(0.0, -z, y) / std::sqrt(y*y + z*z);
    }
    else if (minElement == 1) {
        return Vector3(-z, 0.0, x) / std::sqrt(x*x + z*z);
    }
    else {
        return Vector3(-y, x, 0.0) / std::sqrt(x*x + y*y);
    }

}