Appendix: Particle Smoothing Interpolation

Overview

SC2Particles have multiple ways to blend values between the three particle life keys, Start Mid and End. Inside the Per-particle Parameters for Color, Size and Rotation there is a pulldown for Smoothing. For each type of smoothing is shown an example of particle scale with these values: Start = 1, Mid = 20, End = 1, Mid Time: = 0.3, Hold Time: = 0.1

• Linear has the most basic of linear blending between the Start, Mid and End values over the particle life.

  

• Smooth is a simple curve with parallel control points. Creates an ease in/out type curve.

  

• Bezier is a simple single segment bezier curve with equal length in and out control points. The Mid point defines the size of the curve, but it doesn't allow a lopsided or weighted curve. To achieve lopsided bezier smoothing use Bezier Hold with 0 hold time.

  

• Linear Hold adds the ability to have a Hold Time which causes the particle property to linear blend fully to the Mid value of the particle an amount of particle life before and after the Mid Time.

  

• Bezier Hold creates two separate bezier curves before and after the Mid Time as well as having a Hold Time before and after the Mid Time.