Code Physics cheat sheet

Code Physics cheat sheet

Code physics cheat sheet
===

- velocity = variation of position over time
- acceleration = variation of velocity over time
- friction = opposite of velocity. Fast friction: using a scalar instead of using an opposite vector. (i.e. velocity * 0.9)


Velocity with spring & friction (AKA elastic ease)

```
velocity += dx * spring
velocity *= friction
x += velocity

```

Kinematics

```
pin.x = this.x + Math.cos(this.theta) * this.width;
pin.y = this.y + Math.sin(this.theta) * this.width;
```