Primitives

In 2D computer graphics, primitives are

  • points

  • lines and line segments

  • planes

  • circles and ellipses

  • triangles, 'quads' or arbitrary polygons

  • spline curves

In 3D computer graphics, primitives are simple geometric shapes such as a

  • cube

  • cylinder

  • sphere

  • cone

  • pyramid

  • torus

  • triangle / polygon mesh

They are the building blocks for many other shapes and forms.