ilyakooo0/metal-metaballs
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Refactored metaballs.

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This commit is contained in:
vinivendra 2016-02-25 15:22:16 -05:00
parent f6914176c4
commit 8b54ecfa71
4 changed files with 43 additions and 19 deletions
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20
PixelImage/Metaball.swift Normal file
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@ -0,0 +1,20 @@
import UIKit
class Metaball: UIView {
var color: UIColor
init(position: CGPoint, color: UIColor = UIColor(randomFlatColorOfShadeStyle: .Light)) {
self.color = color
super.init(frame: CGRect.zero)
size = CGSize(50)
middle = position
}
required init?(coder aDecoder: NSCoder) {
color = UIColor(randomFlatColorOfShadeStyle: .Light)
super.init(coder: aDecoder)
}
}

2
PixelImage/MetalMetaballRenderer.swift
View File

@ -179,7 +179,7 @@ class MetalMetaballRenderer {
array.append(Float(x))
array.append(Float(y))
let color = metaball.backgroundColor!
let color = metaball.color
let components = color.components
array.append(Float(components.red))
array.append(Float(components.green))

6
PixelImage/UIColor.swift
View File

@ -7,3 +7,9 @@ extension UIColor {
return (r, g, b, a)
}
}
extension UIColor {
convenience init(red255 red: CGFloat, green: CGFloat, blue: CGFloat, alpha: CGFloat) {
self.init(red: red / 255, green: green / 255, blue: blue / 255, alpha: alpha / 255)
}
}

34
PixelImage/ViewController.swift
View File

@ -23,9 +23,22 @@ class ViewController: UIViewController, MetaballDataSource {
let recognizer = UIPanGestureRecognizer(target: self, action: "handlePan:")
view.addGestureRecognizer(recognizer)
let metaballs = [CGPoint(x: 70, y: 70), CGPoint(x: 270, y: 70), CGPoint(x: 270, y: 470), CGPoint(x: 70, y: 470)].map {
Metaball(position: $0)
}
let lowX = screenWidth / 3
let highX = screenWidth - lowX
let lowY = screenHeight / 4
let highY = screenHeight - lowY
let positions =
[CGPoint(x: lowX, y: lowY),
CGPoint(x: highX, y: lowY),
CGPoint(x: highX, y: highY),
CGPoint(x: lowX, y: highY)]
let colors =
[UIColor(red255: 90, green: 170, blue: 170, alpha: 1.0),
UIColor(red255: 90, green: 170, blue: 170, alpha: 1.0),
UIColor(red255: 110, green: 220, blue: 220, alpha: 1.0),
UIColor(red255: 250, green: 235, blue: 50, alpha: 1.0)]
let metaballs = zip(positions, colors).map { Metaball(position: $0.0, color: $0.1) }
metaballGraph = Graph(vertices: metaballs)
metaballGraph.addEdge(0, 1)
metaballGraph.addEdge(0, 3)
@ -104,18 +117,3 @@ class ViewController: UIViewController, MetaballDataSource {
}
}
class Metaball: UIView {
init(position: CGPoint) {
super.init(frame: CGRect.zero)
size = CGSize(50)
middle = position
backgroundColor = UIColor(randomFlatColorOfShadeStyle: .Light)
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
}