如何创建图像数组,并使用draw()在Swift中绘制它们?
我试图找出如何使用一组图像创建“地图”。 我可以使用f.draw(at:imagePoint)精细地绘制一幅图像,但当我尝试绘制一组图像时,我无法。如何设置图像数组,然后绘制指定的数组如何创建图像数组,并使用draw()在Swift中绘制它们?,swift,nsarray,Swift,Nsarray,我试图找出如何使用一组图像创建“地图”。 我可以使用f.draw(at:imagePoint)精细地绘制一幅图像,但当我尝试绘制一组图像时,我无法。如何设置图像数组,然后绘制指定的数组 var loc = CGPoint(x: 50, y:30) //variables to hold the separate pictures let f = UIImage(named: "forest.png")! var m = UIImage(named: "mountain
var loc = CGPoint(x: 50, y:30)
//variables to hold the separate pictures
let f = UIImage(named: "forest.png")!
var m = UIImage(named: "mountain.png")!
let o = UIImage(named: "out.png")!
let p = UIImage(named: "plain.png")!
let t = UIImage(named: "treasure.png")!
let w = UIImage(named: "water.png")!
let person = UIImage(named: "person.png")!
override func draw(_ rect: CGRect) {
//create array of the referenced images
let tileMap = [o,o,o,o,o,o,o,o,o,o,o,o,
o,m,m,f,f,f,p,p,p,p,w,o,
o,m,m,f,f,f,p,p,p,p,w,o,m]
print("draw called")
var imagePoint = CGPoint(x: 0,y: 0)
//display map
//tileMap.draw(at: imagePoint)
for element in tileMap{
element.draw(at: imagePoint)
//imagePoint = CGPoint(x:0,y:0)
//how to increment CGPoint for each image?
}
//display person
person.draw(at:loc)
}
可能这对您有很大帮助:=
let tileMap = [o,o,o,o,o,o,o,o,o,o,o,o,
o,m,m,f,f,f,p,p,p,p,w,o,
o,m,m,f,f,f,p,p,p,p,w,o,m]
print("draw called")
let row = 5
let numberOfInRow = tileMap.count / row
let xWidth = Int(UIScreen.main.bounds.width) / numberOfInRow
let yHeight = Int(UIScreen.main.bounds.height) / row
var xPoint = 0
var yPoint = 0
var itemCountInRow = 0
for element in tileMap{
let imagePoint = CGPoint(x: xPoint,y: yPoint)
element.draw(at: imagePoint)
if(numberOfInRow > itemCountInRow){
itemCountInRow += 1
xPoint += xWidth
}else{
itemCountInRow = 0
xPoint = 0
yPoint += yHeight
}
}
你的代码毫无意义。你不能对数组说
draw
。绘制每个图像以形成“分片”的替代方法是什么?遍历数组并将每个图像绘制到其在网格中的位置,一次一个。我编辑它是因为我尝试循环,而不是如何更改每个图像的CG点?抱歉,我是新手。请尝试使用collectionView显示您的所有图像