Types of projection - julesrude/Fdf GitHub Wiki
Several forms of pictorial projections are used in design and technical drawings:
- Perspective — most realistic drawings. Our eyes see objects in perspective. There are three types of perspective projections: one-, two- and three-point perspective.
- Oblique — least realistic. Only one or two faces in oblique projections have true shape and size. There are three types of oblique projections: cabinet, cavalier and general.
- Axonometric projections are more realistic than oblique. Horizontal edges of an object in axonometric projections are parallel to each other and inclined to the plane. There are three types of axonometric projections: isometric, dimetric and trimetric.
All three types of axonometric projections are built on the grid where the X and Z axes are inclined to the horizontal plane. The Y axis always stays perpendicular to the horizontal plane.
