3D Basics

Vertex

• The vertex is the most fundamental element in drawing.
• A 3D vertex is composed by 3 coordinates: x, y, z.
• In a 3D cartesian plane, the origin is located at point (0,0,0).

Triangles

• A 3D object is formed basically by a set of triangles.
• A triangle is defined by using 3 vertex.

3D Files

• STL, OBJ or DAE are files containing basically lots of triangles in 3D space.
• STL, OBJ and DAE are open-source standard file formats.