Varying scale at frameCount

[jeremydouglass]

@ChrisHaz3ll

An example would be at 0 - 400 I’d want scale to be 1.5, and then 401 - 500 I’d want scale to transition up to 2 in a smooth way.

One method is to use list-based interpolations

float lerps( float amt, float... vals) {
  if(vals.length==1){ return vals[0]; }
  float unit = 1.0/(vals.length-1);
  return lerp(vals[floor(amt / unit)], vals[ceil(amt / unit)], amt%unit/unit);
}

So my time / vals will be like this:

0 1.5
100 1.5
200 1.5
300 1.5
400 1.5
500 2.0

So my amt, which ranges 0-1.0, will be time/500.0 and my vals will be new float[] {1.5, 1.5, 1.5, 1.5, 1.5, 2.0} With that, lerps() will return the correct results for e.g. time = 450 (1.75)

For more, see:

• List-based interpolations - Processing 2.x and 3.x Forum