function floodFills(px, py) {

var firstClick=new Array()

wx.canvasGetImageData({

canvasId: 'borad',

x: px,

y: py,

width: 1,

height: 1,

success(res) {

firstClick = Array.from(res.data)

if(firstClick[0] == 18 && firstClick[1] == 52 && firstClick[2]==86){

dye(px, py)

console.log(1)

floodFills(px + 1, py)

floodFills(px - 1, py)

floodFills(px, py + 1)

floodFills(px, py - 1)

}

}

})

}