Expanded Math Functionality for Unity

• Quadratic & Linear Root finders
• 2D Angle helpers (AngToDir, DirToAng...)
• 2D Vector extension methods (Rotate90CCW/CW, Rotate, RotateAround...)
• Trajectory Math helpers (GetLaunchSpeed, GetMaxRange, TryGetLaunchAngles...)
• Remap functions
• Added Tau and the Golden Ratio
• Vector extension methods (WithMagnitude, ClampMagnitude(min,max)...)
• Expanded basic math operations to vectors (Clamp, Round, Abs...)
• Color extensions (WithAlpha, MultiplyRGB...)
• Smoothing functions (Smooth01, SmoothCos01...)
• Triangle Math helpers (SignedArea, Circumcenter...)
• Added alternate angle functions to use radians instead of degrees
• And more!

Mathf.cs has a #define to match Unity's library - keep this defined if you are porting an existing project to use Mathfs, otherwise I recommend commenting it out! It makes a few changes:

• Lerp and InverseLerp
  • Now unclamped by default
  • Now uses the more numerically stable evaluation
  • LerpClamped/InverseLerpClamped are now the special case functions/exceptions
• Smoothstep is removed in favor of the more explicit:
  • LerpSmooth (which is how it was implemented) and
  • InverseLerpSmooth (which is how it is implemented everywhere but Unity's Mathf.cs)
• Angle functions will explicitly have a Deg-suffix to indicate degrees (this library adds radian versions as well)
• Min/Max functions with arbitrary inputs/array input will throw instead of returning 0