アンスタ3日目【課題】タートルグラフィックス
３．１kotlinでCanvas にランダムライン描画続き

override fun onDraw(canvas: Canvas){// Canvas Background Color
   canvas.drawColor(Color.argb(255, 0, 100, 125))
   // Canvas center point
   var xc = (width / 2).toFloat() ; var yc = (height / 2).toFloat()
   paint.color = Color.argb(255, 0, 255, 100) // 色
   paint.strokeWidth = 10f // 太さ
   val random = Random()
   fun Rand(from: Int, to: Int) : Int {
    return random.nextInt(to - from) + from
   }
   for(i in 1..60){
    val rndx = xc + Rand(-30,30)*dp as Float
    val rndy = yc + Rand(-30,30)*dp as Float
    canvas.drawLine(xc , yc, rndx, rndy, paint)
    xc=rndx; yc=rndy
   }
  }
 }
}
以上
https://i.imgur.com/c9KoFhi.png