Baklyskii P. V.


The article considers the way of orientation in the space of any person,
including a draftsman. The proposed space construction scheme represents half the
sphere in which its actions unfold. This scheme makes it possible to build spaces of any
shape, as demonstrated by the example of a cube.
For the draftsman, as well as for the shooter and any other person, the space in
which he lives acts, and therefore is oriented, simply must be limited. In everyday life,
any landmark on the ground can become restrictions. A draftsman needs a different kind
of constraint. This is limited by a sphere centered at a reference point whose radius does
not matter. The sphere is of such size that when moving away from the point of
reference of the draftsman to its surface, any object of attention of the draftsman would
visually decrease for him, regardless of its shape and linear lengths to the point.
First of all, the draftsman will need a clear idea of in what relation the size and
shape of his neighbors, that is, the visible faces of the cube, are visible to him. To do
this, you need to pick up the cube model and determine its closest vertex (the central
line of sight), select the desired angle and remember the relative magnitude of the
angles between the three near-edge rays. Having determined in the drawing the position
of the cube near corner and the direction of movement of the edges from it, the
draftsman will have to determine in these directions the position of the three vanishing
points of the lines of parallel edges inside the sphere.

Keywords: central line of sight, position of vanishing points., spatial sphere, system of three mutually perpendicular axes, three mutually perpendicular planes, положение точек схода., пространственная сфера, система трех взаимно перпендикулярных осей, трех взаимно перпендикулярных плоскостей, центральный луч зрения