const Jimp = require("jimp")

async function generateColorbar() {
  const base = await Jimp.create(300, 8, '#e7e2dc')
  const pixel = await Jimp.create(1, 8, '#788ea5')
  for (let i=0; i < 300; i++) {
    const hue = i
    base.composite(
      pixel.color([
        {apply: 'spin', params: [1]}
      ]),
      i,
      0,
      { mode: Jimp.BLEND_SOURCE_OVER }
    )
  }
  return base
}

generateColorbar().then( (result) => {
  result.write('./web/public/img/colorbar.png')
})