Adding PNScatterChart - Data

+//
+//  PNScatterChartData.h
+//  PNChartDemo
+//
+//  Created by Alireza Arabi on 12/4/14.
+//  Copyright (c) 2014 kevinzhow. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+typedef NS_ENUM(NSUInteger, PNScatterChartPointStyle) {
+    PNScatterChartPointStyleCircle = 0,
+    PNScatterChartPointStyleSquare = 1,
+};
+
+@class PNScatterChartDataItem;
+
+typedef PNScatterChartDataItem *(^LCScatterChartDataGetter)(NSUInteger item);
+
+@interface PNScatterChartData : NSObject
+
+@property (strong) UIColor *fillColor;
+@property (strong) UIColor *strokeColor;
+
+@property NSUInteger itemCount;
+@property (copy) LCScatterChartDataGetter getData;
+
+@property (nonatomic, assign) PNScatterChartPointStyle inflexionPointStyle;
+
+/**
+ * If PNLineChartPointStyle is circle, this returns the circle's diameter.
+ * If PNLineChartPointStyle is square, each point is a square with each side equal in length to this value.
+ */
+@property (nonatomic, assign) CGFloat size;
+
+
+@end

+//
+//  PNScatterChartData.m
+//  PNChartDemo
+//
+//  Created by Alireza Arabi on 12/4/14.
+//  Copyright (c) 2014 kevinzhow. All rights reserved.
+//
+
+#import "PNScatterChartData.h"
+
+@implementation PNScatterChartData
+
+- (id)init
+{
+    self = [super init];
+    if (self) {
+        [self setDefaultValues];
+    }
+    
+    return self;
+}
+
+- (void)setDefaultValues
+{
+    _inflexionPointStyle = PNScatterChartPointStyleCircle;
+    _fillColor = [UIColor grayColor];
+    _strokeColor = [UIColor blackColor];
+    _size = 10 ;
+}
+
+- (CAShapeLayer*) drawingPoints
+{
+    if (_inflexionPointStyle == PNScatterChartPointStyleCircle) {
+        float radius = _size;
+        CAShapeLayer *circle = [CAShapeLayer layer];
+        // Make a circular shape
+        circle.path = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(0, 0, 2.0*radius, 2.0*radius)
+                                                 cornerRadius:radius].CGPath;
+        // Configure the apperence of the circle
+        circle.fillColor = [_fillColor CGColor];
+        circle.strokeColor = [_strokeColor CGColor];
+        circle.lineWidth = 1;
+        
+        // Add to parent layer
+        return circle;
+    }
+    else if (_inflexionPointStyle == PNScatterChartPointStyleSquare) {
+        float side = _size;
+        CAShapeLayer *square = [CAShapeLayer layer];
+        // Make a circular shape
+        square.path = [UIBezierPath bezierPathWithRect:CGRectMake(0, 0, side, side)].CGPath ;
+        // Configure the apperence of the circle
+        square.fillColor = [_fillColor CGColor];
+        square.strokeColor = [_strokeColor CGColor];
+        square.lineWidth = 1;
+        
+        // Add to parent layer
+        return square;
+        
+    }
+    else {
+        // you cann add your own scatter chart poin here
+    }
+    return nil ;
+
+}
+
+@end