Initial commit

Author: juliand665

.gitattributes

@@ -0,0 +1,2 @@
+# Auto detect text files and perform LF normalization
+* text=auto

.gitignore

@@ -0,0 +1,10 @@
+## Xcode User Data
+xcuserdata/
+
+## Playgrounds
+timeline.xctimeline
+playground.xcworkspace
+
+# Swift Package Manager
+/.build
+/Packages

.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

.swiftpm/xcode/package.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 Julian Dunskus
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

LICENSE

@@ -0,0 +1,24 @@
+// swift-tools-version:5.1
+
+import PackageDescription
+
+let package = Package(
+	name: "CGeometry",
+	products: [
+		.library(
+			name: "CGeometry",
+			targets: ["CGeometry"]
+		),
+	],
+	dependencies: [],
+	targets: [
+		.target(
+			name: "CGeometry",
+			dependencies: []
+		),
+		.testTarget(
+			name: "CGeometryTests",
+			dependencies: ["CGeometry"]
+		),
+	]
+)

Package.swift

@@ -0,0 +1,3 @@
+# CGeometry
+
+A description of this package.

README.md

@@ -0,0 +1,31 @@
+import CoreGraphics
+
+public extension CGPoint {
+	static var zero: Self { Self(x: 0, y: 0) }
+	
+	// MARK: Point × Vector
+	
+	static func + (point: Self, offset: CGVector) -> Self {
+		Self(
+			x: point.x + offset.dx,
+			y: point.y + offset.dy
+		)
+	}
+	
+	static func += (point: inout Self, offset: CGVector) {
+		point.x += offset.dx
+		point.y += offset.dy
+	}
+	
+	static func - (point: Self, offset: CGVector) -> Self {
+		Self(
+			x: point.x - offset.dx,
+			y: point.y - offset.dy
+		)
+	}
+	
+	static func -= (point: inout Self, offset: CGVector) {
+		point.x -= offset.dx
+		point.y -= offset.dy
+	}
+}

Sources/CGeometry/CGPoint.swift

@@ -0,0 +1,40 @@
+import CoreGraphics
+
+public extension CGSize {
+	static var zero: CGSize { .init(width: 0, height: 0) }
+	
+	static var one: CGSize { .init(width: 1, height: 1) }
+	
+	// MARK: Size × Float
+	
+	static func * (size: Self, scale: CGFloat) -> Self {
+		Self(
+			width: size.width * scale,
+			height: size.height * scale
+		)
+	}
+	
+	static func * (scale: CGFloat, size: Self) -> Self {
+		Self(
+			width: size.width * scale,
+			height: size.height * scale
+		)
+	}
+	
+	static func *= (size: inout Self, scale: CGFloat) {
+		size.width *= scale
+		size.height *= scale
+	}
+	
+	static func / (size: Self, scale: CGFloat) -> Self {
+		Self(
+			width: size.width / scale,
+			height: size.height / scale
+		)
+	}
+	
+	static func /= (size: inout Self, scale: CGFloat) {
+		size.width /= scale
+		size.height /= scale
+	}
+}

Sources/CGeometry/CGSize.swift

@@ -0,0 +1,113 @@
+import CoreGraphics
+
+public extension CGVector {
+	static var zero: Self { Self(dx: 0, dy: 0) }
+	
+	var length: CGFloat { hypot(dx, dy) }
+	
+	var angle: CGFloat { atan2(dy, dx) }
+	
+	init(angle: CGFloat, length: CGFloat) {
+		self.init(dx: cos(angle) * length, dy: sin(angle) * length)
+	}
+	
+	func clamped(to length: CGFloat) -> Self {
+		let len = self.length
+		
+		if len > length {
+			return self * (length / len)
+		} else {
+			return self
+		}
+	}
+	
+	static prefix func - (vector: Self) -> Self {
+		Self(
+			dx: -vector.dx,
+			dy: -vector.dy
+		)
+	}
+	
+	// MARK: Vector × Vector
+	
+	static func + (lhs: Self, rhs: Self) -> Self {
+		Self(
+			dx: lhs.dx + rhs.dx,
+			dy: lhs.dy + rhs.dy
+		)
+	}
+	
+	static func += (lhs: inout Self, rhs: Self) {
+		lhs.dx += rhs.dx
+		lhs.dy += rhs.dy
+	}
+	
+	static func - (lhs: Self, rhs: Self) -> Self {
+		Self(
+			dx: lhs.dx - rhs.dx,
+			dy: lhs.dy - rhs.dy
+		)
+	}
+	
+	static func -= (lhs: inout Self, rhs: Self) {
+		lhs.dx -= rhs.dx
+		lhs.dy -= rhs.dy
+	}
+	
+	static func * (lhs: Self, rhs: Self) -> Self {
+		Self(
+			dx: lhs.dx * rhs.dx,
+			dy: lhs.dy * rhs.dy
+		)
+	}
+	
+	static func *= (lhs: inout Self, rhs: Self) {
+		lhs.dx *= rhs.dx
+		lhs.dy *= rhs.dy
+	}
+	
+	static func / (lhs: Self, rhs: Self) -> Self {
+		Self(
+			dx: lhs.dx / rhs.dx,
+			dy: lhs.dy / rhs.dy
+		)
+	}
+	
+	static func /= (lhs: inout Self, rhs: Self) {
+		lhs.dx /= rhs.dx
+		lhs.dy /= rhs.dy
+	}
+	
+	// MARK: Vector × Float
+	
+	static func * (vector: Self, scale: CGFloat) -> Self {
+		Self(
+			dx: vector.dx * scale,
+			dy: vector.dy * scale
+		)
+	}
+	
+	static func * (scale: CGFloat, vector: Self) -> Self {
+		Self(
+			dx: vector.dx * scale,
+			dy: vector.dy * scale
+		)
+	}
+	
+	static func *= (vector: inout Self, scale: CGFloat) {
+		vector.dx *= scale
+		vector.dy *= scale
+	}
+	
+	static func / (vector: Self, scale: CGFloat) -> Self {
+		Self(
+			dx: vector.dx / scale,
+			dy: vector.dy / scale
+		)
+	}
+	
+	static func /= (vector: inout Self, scale: CGFloat) {
+		vector.dx /= scale
+		vector.dy /= scale
+	}
+}