Things I want to parametrize:

• Star size

  • min scale
  • max scale
  • Variability (0=all stars uniform scale, 1=uniform distribution of random size between max and min scale)

• Star color

  • Rainbow, or...
  • Single color
  • 2 colors (w/ random interpolation between the two colors)

• Star glow

• Star shape

  • square
  • circle
  • 4-pronged
    • tail length

• nebula size (perlin scale)

• nebula color

To interpolate between two values by a specified amount...

Find the difference between the two values, get a random int between 0 and 1, multiply by the difference, and add to lower value.

const grad=ctx.createLinearGradient(0,0, 280,0); grad.addColorStop(0, "lightblue"); grad.addColorStop(1, "darkblue");