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RMOutlineBox.m
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RMOutlineBox.m
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//
// RMOutlineBox.m
// Scanner App
//
// Created by iRare Media on 1/22/14.
// Copyright (c) 2014 iRare Media. All rights reserved.
//
#import "RMOutlineBox.h"
@interface RMOutlineBox ()
@property (nonatomic, strong) CAShapeLayer *outline;
@end
@implementation RMOutlineBox
- (id)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
// Initialization code
_outline = [CAShapeLayer new];
_outline.strokeColor = [[[UIColor redColor] colorWithAlphaComponent:0.8] CGColor];
_outline.lineWidth = 2.5;
_outline.fillColor = [[UIColor clearColor] CGColor];
[self.layer addSublayer:_outline];
}
return self;
}
- (void)setCorners:(NSArray *)corners {
if (corners != _corners) {
_corners = corners;
_outline.path = [[self createOutlineFromCorners:corners] CGPath];
}
}
- (UIBezierPath *)createOutlineFromCorners:(NSArray *)points {
// Create a new bezier path
UIBezierPath *path = [UIBezierPath new];
// AVFoundation provides points in an array, ordered counterclockwise
[path moveToPoint:[[points firstObject] CGPointValue]];
// Draw lines around the corners
for (NSUInteger i = 1; i < [points count]; i++) {
[path addLineToPoint:[points[i] CGPointValue]];
}
// Close up the line to the first corner - complete the path
[path addLineToPoint:[[points firstObject] CGPointValue]];
return path;
}
@end