getWave

function getWave(min, max, steps) {
  
  var stepLength = (max - min) / (steps-1);
  var roundedStepLength = Math.round(stepLength*10)/10;
  var rounder = roundedStepLength*10 - Math.floor(roundedStepLength)*10;
  var curStep = 0,
      i = 0;
  var steps = [];
  
  for(i = min; i+rounder < max; i += Math.floor(roundedStepLength)) {
    if (rounder * curStep > 10) {
        curstep = 0;
        i++;
    }
    curStep++;
    steps.push(i);
  }
  
  steps.push(i);
  return steps;
}