Vectors
- Object with a direction and magnitude (length)
- Typically represented using coordinates for simplicity
- Used for storing position, velocity, acceleration, etc.
- Processing has a built-in PVector object for 2D and 3D
Operations
Addition
- Graphically -> add head to tail
- Algebraically -> add components [3, 3] + [1, 2] = [4, 5]
- PVector.add(PVector)
Scale
- Graphically -> stretch or shrink
- Algebraically -> multiply components by scalar [1,3] * 2 = [2, 6]
- PVector.mult(float)
Calculate Magnitude
- Graphically -> measure length
- Algebraically -> use Pythagorean theorem
- PVector.mag()