//

// HTViewController.m

// CorePlotProgram

//

// Created by wb-shangguanhaitao on 14-3-6.

// Copyright (c) 2014年 shangguan. All rights reserved.

//

#import "HTViewController.h"

#import "CorePlot-CocoaTouch.h"

@interface HTViewController ()<CPTScatterPlotDataSource, CPTAnimationDelegate>

@property (nonatomic, strong) CPTXYGraph *graph;

/**

* 设置图表绘制的配置

*/

- (void)setupCoreplotViews;

@end

@implementation HTViewController

#pragma mark - Superclass API

- (void)viewDidLoad

{

[super viewDidLoad];

[self setupCoreplotViews];

// Do any additional setup after loading the view.

}

- (void)didReceiveMemoryWarning

{

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

#pragma mark - Private API

- (void)setupCoreplotViews

{

/**

* 生成CPTGraphHostingView和CPTXYGraph实例

*/

CPTGraphHostingView *hostingView = [[CPTGraphHostingView alloc] initWithFrame:self.view.bounds];

CPTXYGraph *graph = [[CPTXYGraph alloc] initWithFrame:CGRectZero];

hostingView.hostedGraph = graph;

[self.view addSubview:hostingView];

// self.graph = graph;

graph.plotAreaFrame.paddingTop = 50.0f;

graph.plotAreaFrame.paddingLeft = 50.0f;

graph.plotAreaFrame.paddingBottom = 80.0f;

graph.plotAreaFrame.paddingRight = 30.0f;

// graph.plotAreaFrame.fill = [CPTFill fillWithColor:[CPTColor blueColor]];

graph.paddingTop = 0.0f;

graph.paddingLeft = 0.0f;

graph.paddingBottom = 0.0f;

graph.paddingRight = 0.0f;

// graph.fill = [CPTFill fillWithColor:[CPTColor redColor]];

// hostingView.backgroundColor = [UIColor whiteColor];

/**

* 设置主题，辅助设置一些基本信息

*/

CPTTheme *theme = [CPTTheme themeNamed:kCPTSlateTheme];

[graph applyTheme:theme];

/**

* 设置XY轴

*

*/

CPTXYAxisSet *axisSet = (CPTXYAxisSet *)graph.axisSet;

CPTXYAxis *x = axisSet.xAxis;

x.minorTicksPerInterval = 0;

CPTXYAxis *y = axisSet.yAxis;

y.minorTicksPerInterval = 0;

/**

* 设置二维散点

*/

CPTScatterPlot *plot = [[CPTScatterPlot alloc] init];

plot.dataSource = self;

[graph addPlot:plot];

/**

* 设置显示的区域

*/

CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *)graph.defaultPlotSpace;

plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromCGFloat(0.0f) length:CPTDecimalFromCGFloat(3.0f)];

plotSpace.yRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromCGFloat(0.0f) length:CPTDecimalFromCGFloat(3.0f)];

// 以下是扩展部分

/**

* 添加渐变色

*/

CPTGradient *gradient = [CPTGradient gradientWithBeginningColor:[CPTColor greenColor]

endingColor:[CPTColor clearColor]];

gradient.angle = -90;

plot.areaFill = [CPTFill fillWithGradient:gradient];

plot.areaBaseValue = CPTDecimalFromCGFloat(0.0f);

CPTGradient *gradient2 = [CPTGradient gradientWithBeginningColor:[CPTColor greenColor]

endingColor:[CPTColor clearColor]];

gradient2.angle = 90;

plot.areaFill2 = [CPTFill fillWithGradient:gradient2];

plot.areaBaseValue2 = CPTDecimalFromCGFloat(4.0f);

/**

* 添加散点符号

*/

CPTPlotSymbol *plotSymbol = [CPTPlotSymbol ellipsePlotSymbol];

plotSymbol.fill = [CPTFill fillWithColor:[CPTColor blueColor]];

plot.plotSymbol = plotSymbol;

// /**

// * 修改x轴时间节点

// */

// NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

// dateFormatter.dateStyle = kCFDateFormatterShortStyle;

// CPTTimeFormatter *timeFormatter = [[CPTTimeFormatter alloc] initWithDateFormatter:dateFormatter];

// timeFormatter.referenceDate = [NSDate date];

// x.labelFormatter = timeFormatter;

//

// NSTimeInterval xLow = 0.0;

// NSTimeInterval oneDay = 24 * 60 * 60;

// plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromDouble(xLow) length:CPTDecimalFromDouble(oneDay * 5.0)];

/**

* 添加动画

*/

x.axisConstraints = [CPTConstraints constraintWithLowerOffset:0.0f];

y.axisConstraints = [CPTConstraints constraintWithLowerOffset:0.0f];

[CPTAnimation animate:plotSpace

property:@"xRange"

fromPlotRange:plotSpace.xRange

toPlotRange:[CPTPlotRange plotRangeWithLocation:CPTDecimalFromCGFloat(3.0f) length:CPTDecimalFromCGFloat(3.0f)]

duration:2.0f];

[CPTAnimation animate:plotSpace

property:@"yRange"

fromPlotRange:plotSpace.yRange

toPlotRange:[CPTPlotRange plotRangeWithLocation:CPTDecimalFromCGFloat(3.0f) length:CPTDecimalFromCGFloat(3.0f)]

duration:2.0f

animationCurve:CPTAnimationCurveDefault

delegate:self];

/**

* 添加图表说明

*/

plot.identifier = @"XY";

graph.legend = [CPTLegend legendWithGraph:graph];

graph.legend.fill = [CPTFill fillWithColor:[CPTColor darkGrayColor]];

// graph.legend.entryFill = [CPTFill fillWithColor:[CPTColor whiteColor]];

graph.legend.borderLineStyle = x.axisLineStyle;

graph.legend.cornerRadius = 5.0;

graph.legend.swatchSize = CGSizeMake(50.0, 25.0);

// graph.legend.swatchFill = [CPTFill fillWithColor:[CPTColor redColor]];

graph.legendAnchor = CPTRectAnchorBottom;

graph.legendDisplacement = CGPointMake(0.0, 12.0);

/**

* 对某一层做说明

*/

CPTMutableTextStyle *textStyle = [CPTMutableTextStyle textStyle];

textStyle.color = [CPTColor whiteColor];

textStyle.fontSize = 14.0;

textStyle.fontName = @"Helvetica";

CPTTextLayer *textLayer = [[CPTTextLayer alloc] initWithText:@"Scatter Plot Style" style:textStyle];

CPTLayerAnnotation *instructionsAnnotation = [[CPTLayerAnnotation alloc] initWithAnchorLayer:graph.plotAreaFrame.plotArea];

instructionsAnnotation.contentLayer = textLayer;

instructionsAnnotation.rectAnchor = CPTRectAnchorBottom;

instructionsAnnotation.contentAnchorPoint = CGPointMake(0.5, 0.0);

instructionsAnnotation.displacement = CGPointMake(0.0, 10.0);

[graph.plotAreaFrame.plotArea addAnnotation:instructionsAnnotation];

// graph.plotAreaFrame.plotArea.hidden = YES;

}

#pragma mark - CPTScatterPlotDataSource API

- (NSUInteger)numberOfRecordsForPlot:(CPTPlot *)plot

{

return 5;

}

-(NSNumber *)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)idx

{

return [NSNumber numberWithUnsignedInteger:idx];

}

-(CPTLayer *)dataLabelForPlot:(CPTPlot *)plot recordIndex:(NSUInteger)index

{

CPTTextLayer *label = [[CPTTextLayer alloc] initWithText:[NSString stringWithFormat:@"%lu", (unsigned long)index]];

CPTMutableTextStyle *textStyle = [label.textStyle mutableCopy];

textStyle.color = [CPTColor lightGrayColor];

label.textStyle = textStyle;

return label;

}

#pragma mark - CPTAnimationDelegate API

-(void)animationDidFinish:(CPTAnimationOperation *)operation

{

CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *)self.graph.defaultPlotSpace;

plotSpace.allowsUserInteraction = YES;

}

@end