4. Matrix and vector math

• In 2D we use a lot of trigonometry

• In 3D we use a lot of linear algebra

• In physics calculation for 3D games we begin to use calculus

• A matrix can:

  • Translate (move) a vertex

  • Rotate a vertex

  • Scale a vertex

• Math libraries cover up these details, but we need to learn matrix math to understand 3D modeling and animation.