so this is more of drawing question but also about numbers and values and shapes which i figured is mathemathics... basically i have this issue where i can probably draw an object from a reference once but then when another angle is asked i cant anymore so naturally as an animator i thought expanding my options but using photos would produce infinite resources while no models are as good as life or even a finished comic drawing as some styling is made but generally the 3d forms... something about, generating correct lineart from a volume's information: vertice, edge, size, length and so on into a working, correct drawing, cartoon of sorts. Thus, line AB, CD, EF, ZN,XY will places and points correctly into an image of a bird, for example.

any sort/what are ALL of the solution since science is concerned with variety of things from anatomy to geometry? one thing i m looking for in specific would be, placing out individual lines that represents the form correctly using its position, length, and direction/angle and how the lines then forms 3d volumes on 2d paper? also maybe other than algebra and matrix.