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Update README.md
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TaeJoongYoon authored Oct 16, 2018
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14 changes: 7 additions & 7 deletions CounterClockWise/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -70,9 +70,9 @@ var p3 = Point(x: 3, y: 6)
print(ccw(points: [p1,p2,p3])) // -1 means ClockWise
```

![triangle](/Users/taejoongyoon/Developer/Swift/swift-algorithm-club/CounterClockWise/Images/Triangle_img.jpg)
![triangle](./Images/Triangle_img.jpg)

![triangleExpression](/Users/taejoongyoon/Developer/Swift/swift-algorithm-club/CounterClockWise/Images/triangle.png)
![triangleExpression](./Images/triangle.png)



Expand All @@ -87,9 +87,9 @@ var p7 = Point(x: 9, y: 3)
print(ccw(points: [p4,p5,p6,p7])) // 1 means CounterClockWise
```

![Quadrilateral](/Users/taejoongyoon/Developer/Swift/swift-algorithm-club/CounterClockWise/Images/Quadrilateral_img.jpg)
![Quadrilateral](./Images/Quadrilateral_img.jpg)

![triangleExpression](/Users/taejoongyoon/Developer/Swift/swift-algorithm-club/CounterClockWise/Images/quadrilateral.png)
![triangleExpression](./Images/quadrilateral.png)



Expand All @@ -105,14 +105,14 @@ var p12 = Point(x: 12, y: 8)
print(ccw(points: [p8,p9,p10,p11,p12])) // 1 means CounterClockWise
```

![triangle](/Users/taejoongyoon/Developer/Swift/swift-algorithm-club/CounterClockWise/Images/Pentagon_img.png)
![triangle](./Images/Pentagon_img.png)

![triangleExpression](/Users/taejoongyoon/Developer/Swift/swift-algorithm-club/CounterClockWise/Images/pentagon.png)
![triangleExpression](./Images/pentagon.png)



You probably won't need to use the CCW in any real-world problems, but it's cool to play around with geometry algorithm. The formula was described by Meister (1724-1788) in 1769 and by Gauss in 1795. It can be verified by dividing the polygon into triangles, and can be considered to be a special case of Green's theorem.



*Written for Swift Algorithm Club by TaeJoong Yoon*
*Written for Swift Algorithm Club by TaeJoong Yoon*

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