Questions regarding Jot code

Class DISPLAY_CMD

Should this class be moved to a different header (since it is a concrete COMMAND rather than an abstract command)?

Member mlib::Mat4::shear (const V &normal, const V &shear_vec)

What are the exact meanings of the parameters?

Member mlib::NDCvec::perpendicular () const

Isn't this the same as the Vec2 perpend() function?

Class mlib::NDCZvec_list

Is this class done?

Class mlib::NDCZvec_list

Is _partial_length even necessary?

Member mlib::Point2::operator-= (const P &p)

Should this function be allowed (subtracting two points and getting a point as the result)?

Member mlib::Point2::length () const

Do we need/want this function (since points don't really have a length)?

Member mlib::Point2::length_sqrd () const

Do we need/want this function (since points don't really have a length)?

Class UNDISPLAY_CMD

Should this class be moved to a different header (since it is a concrete COMMAND rather than an abstract command)?

Member ZXseg::_v

What is this used for?

Member ZXseg::_v

Is this a hold over from the older edge representation of silhouettes that this was derived from?

Member mlib::statistics (CARRAY< T > &list, bool print, double *average, double *std_d, T *_max, T *_min)

Do we want this function to print its results to stderr or to stdout?

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