Add possibility to add bezier path on the map

Demo/JCTiledViewDemo/RootViewController.m

@@ -19,6 +19,11 @@
 #import "JCTiledView.h"
 #endif
 
+@interface RootViewController ()
+
+@property (nonatomic, strong) NSArray *bezierPaths;
+@end
+
 @implementation RootViewController
 
 
@@ -67,9 +72,10 @@ - (void)viewDidLoad
   addButton.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin;
   [addButton addTarget:self action:@selector(addRandomAnnotations) forControlEvents:UIControlEventTouchUpInside];
   [self.view addSubview:addButton];
-
+    
   [self tiledScrollViewDidZoom:self.scrollView]; //force the detailView to update the frist time
   [self addRandomAnnotations];
+
 }
 
 - (void)viewDidUnload
@@ -115,18 +121,36 @@ - (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
 
 - (void)addRandomAnnotations
 {
-  static dispatch_once_t onceToken;
-  dispatch_once(&onceToken, ^{
-    srand(42);
-  });
-
-  CGSize size = SkippingGirlImageSize;  
-  for (int i = 0; i < 5; i++)
-  {
-    id<JCAnnotation> a = [[DemoAnnotation alloc] init];
-    a.contentPosition = CGPointMake((float)(rand() % (int)size.width), (float)(rand() % (int)size.height));
-    [self.scrollView addAnnotation:a];
-  }
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        srand(42);
+    });
+
+    CGSize size           = SkippingGirlImageSize;
+
+    NSMutableArray *paths = [NSMutableArray array];
+
+    for (int i = 0; i < 6/2; i++) {
+
+        id<JCAnnotation> firstAnnot    = [[DemoAnnotation alloc] init];
+        CGPoint firstContentPosition = CGPointMake((float)(rand() % (int)size.width), (float)(rand() % (int)size.height));
+        firstAnnot.contentPosition     = firstContentPosition;
+        id<JCAnnotation> secondAnnot    = [[DemoAnnotation alloc] init];
+        CGPoint secondContentPosition = CGPointMake((float)(rand() % (int)size.width), (float)(rand() % (int)size.height));
+        secondAnnot.contentPosition     = secondContentPosition;
+        [self.scrollView addAnnotation:firstAnnot];
+        [self.scrollView addAnnotation:secondAnnot];
+
+
+        UIBezierPath *path    = [UIBezierPath bezierPath];
+        [path moveToPoint:CGPointMake(firstContentPosition.x, firstContentPosition.y + 30.f)]; // 30.f is max height of the annotation image
+        [path addLineToPoint:CGPointMake(secondContentPosition.x, secondContentPosition.y + 30.f)]; // 30.f is max height of the annotation image
+        path.lineWidth = 3.f;
+        [paths addObject:path];
+    }
+
+    self.bezierPaths = [NSArray arrayWithArray:paths];
+
 }
 
 #pragma mark - JCTiledScrollViewDelegate
@@ -169,4 +193,19 @@ - (UIImage *)tiledScrollView:(JCTiledScrollView *)scrollView imageForRow:(NSInte
 }
 
 
+-(UIBezierPath *)tiledScrollViewGetBezierPath:(JCTiledScrollView *)scrollView atIndex:(NSInteger)index{
+    return [self.bezierPaths objectAtIndex:index];
+}
+
+- (UIColor *)tiledScrollViewGetPathColor:(JCTiledScrollView *)scrollView atIndex:(NSInteger)index {
+    //UIColor *color = [UIColor colorWithRed:38.f/255.f green:166.f/255.f blue:91.f/255.f alpha:1.f];
+    UIColor *color = [UIColor whiteColor];
+    return color;
+}
+
+- (NSInteger)tiledScrollViewGetNumberOfPath:(JCTiledScrollView *)scrollView {
+    return [self.bezierPaths count];
+}
+
+
 @end

Headers/JCTiledScrollView.h

@@ -56,6 +56,10 @@
 - (void)tiledScrollView:(JCTiledScrollView *)scrollView didReceiveDoubleTap:(UIGestureRecognizer *)gestureRecognizer;
 - (void)tiledScrollView:(JCTiledScrollView *)scrollView didReceiveTwoFingerTap:(UIGestureRecognizer *)gestureRecognizer;
 
+- (UIBezierPath *)tiledScrollViewGetBezierPath:(JCTiledScrollView *)scrollView atIndex:(NSInteger)index;
+- (UIColor *)tiledScrollViewGetPathColor:(JCTiledScrollView *)scrollView atIndex:(NSInteger)index;
+- (NSInteger)tiledScrollViewGetNumberOfPath:(JCTiledScrollView *)scrollView;
+
 @end
 
 @interface JCTiledScrollView : UIView <UIScrollViewDelegate>

JCTiledScrollView/Source/JCTiledScrollView.m

@@ -42,6 +42,7 @@ @interface JCTiledScrollView () <JCTiledBitmapViewDelegate, UIGestureRecognizerD
 @property (nonatomic, strong) UITapGestureRecognizer *doubleTapGestureRecognizer;
 @property (nonatomic, strong) UITapGestureRecognizer *twoFingerTapGestureRecognizer;
 @property (nonatomic, assign) BOOL muteAnnotationUpdates;
+@property (nonatomic, strong) NSMutableArray *pathLayers;
 @end
 
 @implementation JCTiledScrollView
@@ -133,6 +134,10 @@ - (id)initWithFrame:(CGRect)frame contentSize:(CGSize)contentSize
 	return self;
 }
 
+-(void)didMoveToSuperview{
+    [super didMoveToSuperview];
+    [self addPath];
+}
 
 #pragma mark - UIScrolViewDelegate
 
@@ -507,6 +512,7 @@ - (BOOL)point:(CGPoint)point isWithinBounds:(CGRect)bounds
 - (void)refreshAnnotations
 {
   [self correctScreenPositionOfAnnotations];
+    [self addPath];
 }
 
 - (void)addAnnotation:(id<JCAnnotation>)annotation
@@ -563,4 +569,45 @@ - (void)removeAllAnnotations
   [self removeAnnotations:[_annotations allObjects]];
 }
 
+#pragma mark - PATH
+- (void)addPath {
+    if([self.tiledScrollViewDelegate respondsToSelector:@selector(tiledScrollViewGetBezierPath:)]){
+        UIBezierPath *path = [self.tiledScrollViewDelegate tiledScrollViewGetBezierPath:self];
+        [self addPath:path andColor:[self.tiledScrollViewDelegate tiledScrollViewGetPathColor:self]];
+    }
+    else if ([self.tiledScrollViewDelegate respondsToSelector:@selector(tiledScrollViewGetNumberOfPath:)]) {
+        for (CALayer *layer in [_tiledView.layer sublayers]) {
+            [layer removeFromSuperlayer];
+        }
+        int number = (int)[self.tiledScrollViewDelegate tiledScrollViewGetNumberOfPath:self];
+        for (int i = 0; i < number; i++) {
+            UIColor *color = [UIColor blackColor];
+            UIBezierPath *path = nil;
+            if([self.tiledScrollViewDelegate respondsToSelector:@selector(tiledScrollViewGetBezierPath:atIndex:)]){
+                path = [self.tiledScrollViewDelegate tiledScrollViewGetBezierPath:self atIndex:i];
+            }
+            if([self.tiledScrollViewDelegate respondsToSelector:@selector(tiledScrollViewGetPathColor:atIndex:)]){
+                color = [self.tiledScrollViewDelegate tiledScrollViewGetPathColor:self atIndex:i];
+            }
+            [self addPath:path andColor:color];
+        }
+    }
+}
+
+- (void)addPath:(UIBezierPath *)path andColor:(UIColor *)color {
+    if (!self.pathLayers) self.pathLayers = [NSMutableArray array];
+    if (path) {
+        CAShapeLayer *pathLayr = [CAShapeLayer layer];
+        pathLayr.anchorPoint = CGPointMake(0.5, 0.5);
+        pathLayr.frame = self.tiledView.frame;
+        pathLayr.path = path.CGPath;
+        pathLayr.strokeColor = (color?color:[UIColor blackColor]).CGColor;
+        pathLayr.fillColor = [UIColor clearColor].CGColor;
+        pathLayr.lineWidth = path.lineWidth;
+        pathLayr.lineJoin = kCALineJoinBevel;
+        [_tiledView.layer addSublayer:pathLayr];
+        [self.pathLayers addObject:pathLayr];
+    }
+}
+
 @end