因为工作需要雷达图，有很多开源的也很好，但是代码太多了，太杂，只需要雷达图，所以就自己定义了 可设置多个边如图
使用方式
BJRadarMapHelp *help = [[BJRadarMapHelp alloc]init];
help.size = CGSizeMake(self.view.frame.size.width -100*KWidthRate, self.view.frame.size.width -100*KWidthRate);
help.count= array.count>1?array.count:6;//设置顶点个数
self.radarview.helper = help;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1* NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self.radarview setValueArray:array];
});
代码如下 .h 这里添加了一个辅助类来设置各种属性数据
@interfaceBJRadarMapHelp :NSObject
@property (nonatomic, assign) NSInteger count;
@property (nonatomic, assign) NSInteger lineCount;
@property (nonatomic, assign) CGFloat lineWidth;
@property (nonatomic, assign) CGFloat space;
@property (nonatomic, strong) UIFont *textFont;
@property (nonatomic, strong) UIColor *textColor;
@property (nonatomic, assign) CGSize size;//view的size
@property (nonatomic, strong) UIColor *lineColor;
@property (nonatomic, strong) UIColor *fillColor;
@end
@interfaceBJRadarMapView :UIView
@property (nonatomic, strong)BJRadarMapHelp *helper;
@property (nonatomic, strong) NSArray *valueArray;//值 value 为字典 字典包含title 和 rate两个key
- (instancetype)init;
@end
.m
#define RadarTextTag 590
@implementation BJRadarMapHelp
- (instancetype)init{
self= [superinit];
if(self) {
[selfinitData];
}
return self;
}
//设置默认值
- (void)initData{
_count=6;
_textFont = UIFont_Font(16);
_lineColor = [UIColor colorWithHexString:@"#9D9D9E"];
_lineCount = 5;
_space=30;
_size=CGSizeMake(220,220);
_fillColor = [UIColor colorWithHexString:@"#31D486"];
_lineWidth = 1;
_textColor = [UIColor whiteColor];
}
@end
@interface BJRadarMapView()
@property (nonatomic, assign)CGSize viewSize;
@property (nonatomic, assign)CGFloat radiusLen ;//多边形半径
@property (nonatomic, assign)CGFloat space ;//多边形与self 之间的距离
@property (nonatomic, strong) NSMutableArray *topPointArray;//n个顶点的坐标点的坐标
@property(nonatomic,strong)NSArray *valuePointArray;//n个顶点的坐标点的坐标
@property (nonatomic, strong)CAShapeLayer *frontSpiderLayer;
@property(nonatomic,strong)CAShapeLayer*backGroundSpiderLayer;
@end
@implementation BJRadarMapView
- (instancetype)init{
self= [superinit];
if(self){
self.backgroundColor = [UIColor clearColor];
self.topPointArray = [NSMutableArray array];
[selfsetUpView];
}
return self;
}
- (void)setUpView{
self.backGroundSpiderLayer = [CAShapeLayer layer];
[self.backGroundSpiderLayer setBackgroundColor:[UIColor clearColor].CGColor];
self.backGroundSpiderLayer.fillColor = [UIColor clearColor].CGColor;
[self.layer addSublayer:self.backGroundSpiderLayer];
self.frontSpiderLayer = [CAShapeLayer layer];
[self.frontSpiderLayer setBackgroundColor:[UIColor clearColor].CGColor];
[self.layer addSublayer:self.frontSpiderLayer];
}
- (void)setHelper:(BJRadarMapHelp*)helper{
_helper= helper;
[self updateBackView];
}
- (void)setValueArray:(NSArray*)valueArray{
_valueArray= valueArray;
if(valueArray.count<1) {
return;
}
[self updateForward];
}
- (void)updateForward{
self.frontSpiderLayer.path = nil;
self.frontSpiderLayer.frame = CGRectMake(0, 0, _helper.size.width, _helper.size.height);
[self drawForwardsWith:self.frontSpiderLayer];
[self loadText];
}
- (void)updateBackView{
//赋值基本数据
self.space = _helper.space;
self.viewSize = CGSizeMake(_helper.size.width-_space*2, _helper.size.height - _space*2);
self.radiusLen = (_helper.size.width-_space*2)/2;
//初始化layer和数组
self.backGroundSpiderLayer.path = nil;
[self.topPointArray removeAllObjects];
self.backGroundSpiderLayer.frame = CGRectMake(0, 0, _helper.size.width, _helper.size.height);
for(inti =0; i <_helper.lineCount; i++) {
CGFloatradius = self.radiusLen - self.radiusLen/_helper.lineCount *i;
NSArray *array = [self pointForBackRadar:self.backGroundSpiderLayer radiusLen:radius];
[self.topPointArrayaddObject:array];
}
//添加背景
[self drawBackWith:self.backGroundSpiderLayer];
}
#pragma mark - 绘制背景 背景 添加文字
- (void)loadText{
NSArray*topArray =nil;
if (self.topPointArray.count >0) {
topArray =self.topPointArray[0];
}
CGFloat lineLength =_helper.size.width/2;
lineLength =round(lineLength *100) /100;
for(inti =0; i
CGPointpoint = [topArray[i]CGPointValue];
UILabel*label = [selfviewWithTag:RadarTextTag+i];
if(!label) {
label = [[UILabelalloc]init];
label.tag=RadarTextTag+i;
[labelsetFont:_helper.textFont];
[labelsetTextColor:_helper.textColor];
[labelsetBackgroundColor:[UIColor clearColor]];
[labelsetTextAlignment:NSTextAlignmentCenter];
[selfaddSubview:label];
}
if(self.valueArray.count>i)
{
NSDictionary*dic =self.valueArray[i];
[labelsetText:[NSString stringWithFormat:@"%@",[dic valueForKey:@"title"]]];
}
CGFloatlenth = [label.textstringLengthWithFont:label.font];
CGFloatx = point.x>lineLength?point.x+5:point.x- lenth -5;
CGFloaty = point.y>lineLength?point.y+5:point.y-5-22;
//这里本应该是= lineLength 由于计算会出现很多小数点所以加了做了范围判断
if(point.x< lineLength +1&& point.x> lineLength -1) {
x = point.x- lenth/2;
}
if(point.y< lineLength +1&& point.y> lineLength -1) {
y = point.y-22/2;
}
[labelsetFrame:CGRectMake(x, y, lenth,22)];
}
}
- (void)drawForwardsWith:(CAShapeLayer*)layer{
self.valuePointArray = [self forwardsPointForLayer:layer];
UIBezierPath*forwardsSpiderLayerPath = [UIBezierPathbezierPath];
if (self.valuePointArray.count > 0) {
[forwardsSpiderLayerPathmoveToPoint:[self.valuePointArray[0]CGPointValue]];
}
for(inti =0; i
[forwardsSpiderLayerPathaddLineToPoint:[self.valuePointArray[i]CGPointValue]];
if(i ==self.valuePointArray.count-1){
[forwardsSpiderLayerPathaddLineToPoint:[self.valuePointArray[0]CGPointValue]];
}
}
[forwardsSpiderLayerPathclosePath];
layer.strokeColor =_helper.fillColor.CGColor;
layer.fillColor =_helper.fillColor.CGColor;
[layersetHidden:YES];
layer.path= forwardsSpiderLayerPath.CGPath;
layer.lineWidth=1;
//渲染时先填充的黑色的低 所以要延时 达到看不到黑色底的效果
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[layersetHidden:NO];
});
}
- (void)drawBackWith:(CAShapeLayer*)layer {
//绘制网状路径
UIBezierPath*backGroundSpiderLayerPath = [UIBezierPathbezierPath];
NSArray*topArray =nil;
if(self.topPointArray.count > 0){
topArray =self.topPointArray[0];
}
CGPoint center = CGPointMake(_helper.size.width/2, _helper.size.height/2);
[backGroundSpiderLayerPathmoveToPoint:center];
//绘制最外层的线和到中点的线
for(inti =0; i< topArray.count; i++){
[backGroundSpiderLayerPathaddLineToPoint:[topArray[i]CGPointValue]];
if(i+1< topArray.count) {
[backGroundSpiderLayerPathaddLineToPoint:[topArray[i+1]CGPointValue]];
[backGroundSpiderLayerPathaddLineToPoint:center];
}else{
[backGroundSpiderLayerPathaddLineToPoint:[topArray[0]CGPointValue]];
}
}
//绘制内层的线
for(inti =1; i
NSArray*point =self.topPointArray[i];
for(intj =0; j
[backGroundSpiderLayerPathaddLineToPoint:[point[j]CGPointValue]];
if(j == point.count-1){
[backGroundSpiderLayerPathaddLineToPoint:[point[0]CGPointValue]];
}
}
}
[backGroundSpiderLayerPathclosePath];
[layersetHidden:YES];
layer.fillColor = [UIColor clearColor].CGColor;
layer.strokeColor = _helper.lineColor.CGColor;
layer.path= backGroundSpiderLayerPath.CGPath;
layer.lineWidth = _helper.lineWidth;
//渲染时先填充的黑色的低 所以要延时 达到看不到黑色底的效果
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[layersetHidden:NO];
});
}
#pragma mark - 计算坐标点
- (NSArray*)forwardsPointForLayer:(CAShapeLayer*)layer{
NSMutableArray *array = [NSMutableArray array];
CGFloatradio =360/_helper.count;
CGFloat lineLength = layer.frame.size.width/2;
for(inti =0; i<_helper.count; i++) {
//取出值
CGFloatvalue =0.0;
if(self.valueArray.count>i) {
NSDictionary*dic =self.valueArray[i];
NSInteger cou =[[dicvalueForKey:@"rate"] integerValue];
value = cou/100.00;
}
//计算值到中心点 的长度
CGFloatradius = value*_radiusLen;
CGFloatcurrentRadio = i*radio;
CGFloat x = lineLength + radius*sin([selfhuDuFromdu:currentRadio]);
CGFloat y = lineLength - radius*cos([selfhuDuFromdu:currentRadio]);
x =round(x *100) /100;
y =round(y *100) /100;
[arrayaddObject:[NSValue valueWithCGPoint:CGPointMake(x, y)]];
NSLog(@"**********%f,%f",x,y);
}
returnarray;
}
- (NSArray*)pointForBackRadar:(CAShapeLayer*)layer radiusLen:(CGFloat)radius{
CGFloat lineLength = layer.frame.size.width/2;
NSMutableArray*pointArray = [NSMutableArray array];
//计算找出点
CGPoint topPoint0 =CGPointMake(lineLength,lineLength - radius);
[pointArrayaddObject:[NSValue valueWithCGPoint:topPoint0]];
CGFloatradio =360/_helper.count;
for(inti =1; i<_helper.count; i++) {
CGFloatcurrentRadio = i*radio;
CGFloat x = lineLength + radius*sin([selfhuDuFromdu:currentRadio]);
CGFloat y = lineLength - radius*cos([selfhuDuFromdu:currentRadio]);
x =round(x *100) /100;
y =round(y *100) /100;
[pointArrayaddObject:[NSValue valueWithCGPoint:CGPointMake(x, y)]];
NSLog(@"**********%f,%f",x,y);
}
returnpointArray;
}
-(float)huDuFromdu:(float)du
{
returnM_PI/(180/du);
}