- First Commit

- Release 0.1.0
2016-01-19 12:59:36 +01:00
1 parent 4715b46f05
commit da8d73f30f
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+//
+//  UIBezierPath+OvalSegment.h
+//
+//  Created by Giuseppe Nucifora on 19/01/16.
+//  Copyright © 2016 Giuseppe Nucifora All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface UIBezierPath (OvalSegment)
+
+ (UIBezierPath *)bezierPathWithOvalInRect:(CGRect)rect startAngle:(CGFloat)startAngle endAngle:(CGFloat)endAngle;
+ (UIBezierPath *)bezierPathWithOvalInRect:(CGRect)rect startAngle:(CGFloat)startAngle endAngle:(CGFloat)endAngle angleStep:(CGFloat)angleStep;
+
+
+@end
@@ -0,0 +1,43 @@
+//
+//  UIBezierPath+OvalSegment.m
+//
+//  Created by Giuseppe Nucifora on 19/01/16.
+//  Copyright © 2016 Giuseppe Nucifora All rights reserved.
+//
+
+#import "UIBezierPath+OvalSegment.h"
+
+@implementation UIBezierPath (OvalSegment)
+
+ (UIBezierPath *)bezierPathWithOvalInRect:(CGRect)rect startAngle:(CGFloat)startAngle endAngle:(CGFloat)endAngle angleStep:(CGFloat)angleStep {
+    CGPoint center = CGPointMake(CGRectGetMidX(rect), CGRectGetMidY(rect));
+    CGFloat xRadius = CGRectGetWidth(rect)/2.0f;
+    CGFloat yRadius = CGRectGetHeight(rect)/2.0f;
+    
+    UIBezierPath *ellipseSegment = [UIBezierPath new];
+    
+    CGPoint firstEllipsePoint = [self ellipsePointForAngle:startAngle withCenter:center xRadius:xRadius yRadius:yRadius];
+    [ellipseSegment moveToPoint:firstEllipsePoint];
+    
+    for (CGFloat angle = startAngle + angleStep; angle < endAngle; angle += angleStep) {
+        CGPoint ellipsePoint = [self ellipsePointForAngle:angle withCenter:center xRadius:xRadius yRadius:yRadius];
+        [ellipseSegment addLineToPoint:ellipsePoint];
+    }
+    
+    CGPoint lastEllipsePoint = [self ellipsePointForAngle:endAngle withCenter:center xRadius:xRadius yRadius:yRadius];
+    [ellipseSegment addLineToPoint:lastEllipsePoint];
+    
+    return ellipseSegment;
+}
+
+ (UIBezierPath *)bezierPathWithOvalInRect:(CGRect)rect startAngle:(CGFloat)startAngle endAngle:(CGFloat)endAngle {
+    return [UIBezierPath bezierPathWithOvalInRect:rect startAngle:startAngle endAngle:endAngle angleStep:M_PI/20.0f];
+}
+
+ (CGPoint)ellipsePointForAngle:(CGFloat)angle withCenter:(CGPoint)center xRadius:(CGFloat)xRadius yRadius:(CGFloat)yRadius {
+    CGFloat x = center.x + xRadius * cosf(angle);
+    CGFloat y = center.y - yRadius * sinf(angle);
+    return CGPointMake(x, y);
+}
+
+@end