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//
//  NSObject+BlockObservation.h
//  Version 1.0
//
//  Andy Matuschak
//  andy@andymatuschak.org
//  Public domain because I love you. Let me know how you use it.
//

#import <Cocoa/Cocoa.h>

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+ (CGPathRef )createPathWithArrowFromPoint:(CGPoint)startPoint
                                   toPoint:(CGPoint)endPoint
                                 tailWidth:(CGFloat)tailWidth
                                 headWidth:(CGFloat)headWidth
                                headLength:(CGFloat)headLength
                                    wiggle:(CGFloat)wiggle
{
    CGFloat length = hypotf(endPoint.x - startPoint.x, endPoint.y - startPoint.y);
    
    CGPoint points[9];

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- (void)mouseDown:(NSEvent *)event
{
  arrow = [CAShapeLayer layer];
  
  CGFloat minMagnitude = 20;
  CGPoint middle = CGPointMake(CGRectGetMidX(self.bounds), CGRectGetMidY(self.bounds));
  CGPoint vector = CGPointMake(target.x-middle.x, target.y-middle.y);
  CGFloat magnitude = sqrt(vector.x*vector.x+vector.y*vector.y);
  CGPoint start = CGPointMake(middle.x+vector.x/magnitude*minMagnitude, middle.y+vector.y/magnitude*minMagnitude);
  

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CGPathRef endPath = [RLArrowView createPathWithArrowFromPoint:middle
                                                      toPoint:target
                                                    tailWidth:2.0
                                                    headWidth:10.0
                                                   headLength:20.0
                                                       wiggle:0];

	    
[NSAnimationContext runAnimationGroup:^(NSAnimationContext *context){
    

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- (void)wiggleFromPath:(CGPathRef)path target:(CGPoint)target amount:(CGFloat)amount
{
    
    CGPoint middle = CGPointMake(CGRectGetMidX(self.bounds), CGRectGetMidY(self.bounds));
    CGPathRef endPath = [RLArrowView createPathWithArrowFromPoint:middle
                                                          toPoint:target
                                                        tailWidth:2.0
                                                        headWidth:10.0
                                                       headLength:20.0
                                                           wiggle:amount];

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//
//  RLArrowView.m
//
//  Created by brian on 6/20/13.
//  Copyright (c) 2013 RantLab. All rights reserved.
//

#import "RLArrowView.h"

@implementation RLArrowView

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//
//  RLCrashyView.m
//  CrashyMcCrashy
//
//  Created by brian on 10/31/13.
//  Copyright (c) 2013 Rantlab. All rights reserved.
//

#import <Cocoa/Cocoa.h>

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#import <XCTest/XCTest.h>

@interface XCTestCase (RLWaitWithExpectation)

- (void)waitFor:(NSTimeInterval)seconds withExpectationBlock:(BOOL (^)())block;

@end

@implementation XCTestCase (RLWaitWithExpectation)

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Verifying that +brianwilliams is my blockchain ID. https://onename.com/brianwilliams

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