A Binary Space Partitioning Framework for iOS.
Mondrain is a lightweight framework consisting of a handful of protocols and extensions.
Any type that implements Partitionable may pass an instance into the partitioned function to return a collection of elements that compose the partitioned instance.
Mondrian is compatible with Carthage. To install it, simply add the following line to your Cartfile:
github "NiceThings/Mondrian"
partitioned takes a root value to partitition, a minimum value which the returned elements should not fall below, and a tranformation closure that defines how the partitioning should take place.
For example, partitioned could return a CGRect vertically bisected in in chunks no smaller than a rectangle of area 100:
let viewRect = view.frame
CGRect.partitioned(withRootValue: viewRect,
minValue: CGRect(x: 0.0,
y: 0.0,
width: 50.0,
height: 50.0)) { (parent) -> (CGRect, CGRect) in
let bisectPt = parent.height / 2.0
let c1 = CGRect(origin: parent.origin, size: CGSize(width: parent.width, height: parent.height - bisectPt))
let c2 = CGRect(origin: CGPoint(x: c1.minX, y: c1.maxY), size: CGSize(width: parent.width, height: bisectPt))
return (c1, c2)
}
In the example below, the CGRect bisected at a random index, resulting in a slick, Mondrian-esque image.
CGRect.partitioned(withRootValue: viewRect, minValue: CGRect(x: 0.0, y: 0.0, width: 50.0, height: 50.0)) { (parent) -> (CGRect, CGRect) in
var c1 = CGRect.zero
var c2 = CGRect.zero
var bisectPt: CGFloat = 0.0
if arc4random() % 2 == 0 {
bisectPt = parent.height / CGFloat(arc4random_uniform(4) + 2)
c1 = CGRect(origin: parent.origin, size: CGSize(width: parent.width, height: parent.height - bisectPt))
c2 = CGRect(origin: CGPoint(x: c1.minX, y: c1.maxY), size: CGSize(width: parent.width, height: bisectPt))
} else {
bisectPt = parent.width / CGFloat(arc4random_uniform(4) + 2)
c1 = CGRect(origin: parent.origin, size: CGSize(width: parent.width - bisectPt, height: parent.height))
c2 = CGRect(origin: CGPoint(x: c1.maxX, y: c1.minY), size: CGSize(width: bisectPt, height: parent.height))
}
return (c1, c2)
}
Mondrian is released under the MIT license. See LICENSE.md for details.
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