ios - 使用单个 SKShapeNode 渲染多个重叠多边形？
<p><p>我发现可以使用单个 SKShapeNode 对象渲染多个多边形:</p>
<pre><code>class GameScene: SKScene {
override func didMove(to view: SKView) {
let polygons = [
[
CGPoint(x: 0, y: 0),
CGPoint(x: 100, y: 100),
CGPoint(x: 100, y: 0)
],
[
CGPoint(x: 50, y: 50),
CGPoint(x: 50, y: 150),
CGPoint(x: 150, y: 150),
CGPoint(x: 150, y: 50),
],
]
let path = CGMutablePath()
for points in polygons {
path.addLines(between: points)
path.closeSubpath()
}
let node = SKShapeNode(path: path)
node.fillColor = UIColor.red
addChild(node)
}
}
</code></pre>
<p>但是，多边形重叠的任何空间都将呈现为空:</p>
<p> <a href="/image/0T4sS.jpg" rel="noreferrer noopener nofollow"><img src="/image/0T4sS.jpg" alt="enter image description here"/></a> </p>
<p>是否可以在继续使用单个节点的同时填充这些空白？</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>如果您不关心边界，这里有一个 kluge 解决方法。 </p>
<pre><code>class GameScene: SKScene {
override func didMove(to view: SKView) {
let polygons = [
[
CGPoint(x: 0, y: 0),
CGPoint(x: 100, y: 100),
CGPoint(x: 100, y: 0)
],
[
CGPoint(x: 50, y: 50),
CGPoint(x: 50, y: 150),
CGPoint(x: 150, y: 150),
CGPoint(x: 150, y: 50),
]
]
let path = CGMutablePath()
for points in polygons {
path.addLines(between: points)
path.closeSubpath()
}
let first = CGMutablePath()
first.addLines(between: polygons);
first.closeSubpath()
let second = CGMutablePath()
second.addLines(between: polygons);
second.closeSubpath()
let node = SKShapeNode(path: first)
node.fillColor = .red
node.strokeColor = .red
let child = SKShapeNode(path: second)
child.fillColor = .red
child.strokeColor = .red
node.addChild(child)
addChild(node)
}
}
</code></pre>
<p>如果你关心边框，那么...... </p>
<pre><code>class GameScene: SKScene {
override func didMove(to view: SKView) {
let polygons = [
[
CGPoint(x: 0, y: 0),
CGPoint(x: 100, y: 100),
CGPoint(x: 100, y: 0)
],
[
CGPoint(x: 50, y: 50),
CGPoint(x: 50, y: 150),
CGPoint(x: 150, y: 150),
CGPoint(x: 150, y: 50),
]
]
let path = CGMutablePath()
for points in polygons {
path.addLines(between: points)
path.closeSubpath()
}
let first = CGMutablePath()
first.addLines(between: polygons);
first.closeSubpath()
let second = CGMutablePath()
second.addLines(between: polygons);
second.closeSubpath()
let node = SKShapeNode(path: first)
node.fillColor = .red
node.strokeColor = .white
node.lineWidth = 2
let child = SKShapeNode(path: second)
child.fillColor = .red
child.strokeColor = .white
node.lineWidth = 2
node.addChild(child)
let child2 = SKShapeNode(path: first)
child2.fillColor = .red
child2.strokeColor = .clear
node.lineWidth = 2
node.addChild(child2)
addChild(node)
}
}
</code></pre></p>
<p style="font-size: 20px;">关于ios - 使用单个 SKShapeNode 渲染多个重叠多边形？，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/41552735/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/41552735/
</a>
</p>
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