6-1 色彩入門與RGB模式

var clr 

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(100);

  clr = color("FireBrick")

  clr.setAlpha(100)

}

​

function draw() {

  // var clr = color(255, 63, 63)

  // var clr = color("#3b52f9")

  // var clr = color("FireBrick")

  print(clr._getBlue())

  fill(clr)

  circle(mouseX, mouseY, 100, 100);

}

​

function mousePressed() {

  var b = clr._getBlue()

  clr.setBlue(b + 100)

}