QuartZ2D_02

#import "DrawView.h"

@implementation DrawView


// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
    UIBezierPath *path = [UIBezierPath bezierPath];
    [path moveToPoint:CGPointMake(0, 300)];
    [path addLineToPoint:CGPointMake(300, 300)];
    [path moveToPoint:CGPointMake(0, 300)];
    [path addLineToPoint:CGPointMake(0, 0)];
    path.lineWidth = 5;
    [path stroke];
    int line = 0;
    NSArray *dataArr = @[@100,@200,@200,@250,@10,@20];
    for (NSNumber *num in dataArr) {
        CGPoint startPoint = CGPointMake(30 + line * 300/dataArr.count, 300);
        CGPoint endPoint = CGPointMake(30 + line * 300/dataArr.count, 300 - 300 * (num.intValue / 300.0));
        UIBezierPath *path = [UIBezierPath bezierPath];
        [path moveToPoint:startPoint];
        [path addLineToPoint:endPoint];
        path.lineWidth = 20;
        [path stroke];
        line ++;
    }
    
}
-(void)shape1{

    //方形
    //    UIBezierPath *path = [UIBezierPath bezierPathWithRect:CGRectMake(50, 50, 200, 200)];
    //    //填充
    //    [path fill];
    //椭圆
    //    UIBezierPath *path = [UIBezierPath bezierPathWithOvalInRect:CGRectMake(50, 50, 200, 200)];
    //    [path stroke];
    //圆角
    //    UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:150];
    //    [path stroke];
    //圆(扇形)   startAngle是从三点方向开始画 clockwise是顺时针
    UIBezierPath *path = [UIBezierPath bezierPathWithArcCenter:CGPointMake(150, 150) radius:100 startAngle:0 endAngle:M_PI_2 clockwise:YES];
    [path addLineToPoint:CGPointMake(150, 150)];
    [path closePath];
    [path stroke];
    UIBezierPath *path2 = [UIBezierPath bezierPathWithArcCenter:CGPointMake(150, 150) radius:100 startAngle:M_PI_2 endAngle:M_PI_2 + M_PI_2 clockwise:YES];
    [[UIColor redColor] set];
    [path2 addLineToPoint:CGPointMake(150, 150)];
    [path2 closePath];
    [path2 stroke];
    UIBezierPath *path3 = [UIBezierPath bezierPathWithArcCenter:CGPointMake(150, 150) radius:100 startAngle:M_PI_2 *2 endAngle:M_PI_2 * 3 clockwise:YES];
    [[UIColor yellowColor] set];
    [path3 addLineToPoint:CGPointMake(150, 150)];
    [path3 closePath];
    [path3 stroke];
    UIBezierPath *path4 = [UIBezierPath bezierPathWithArcCenter:CGPointMake(150, 150) radius:100 startAngle:M_PI_2 *3 endAngle:M_PI_2 * 4 clockwise:YES];
    [[UIColor orangeColor] set];
    [path4 addLineToPoint:CGPointMake(150, 150)];
    [path4 closePath];
    
    [path4 stroke];
}
- (void)shape2{
    NSArray *dataArray = @[@20,@10,@10,@10,@10,@20,@20];
    //记录起点和终点
    CGFloat start = 0;
    CGFloat end = 0;
    //    遍历数据
    for (NSNumber *num in dataArray) {
        end = num.floatValue / 100 *M_PI *2;
        UIBezierPath *path = [UIBezierPath bezierPathWithArcCenter:CGPointMake(150, 150) radius:100 startAngle:start endAngle:start + end clockwise:YES];
        //关闭路径
        [path addLineToPoint:CGPointMake(150, 150)];
        [path closePath];
        
        [[UIColor colorWithRed:arc4random()%256 / 255.0 green:arc4random()%256 / 255.0 blue:arc4random()%256 / 255.0 alpha:1] set];
        [path fill];
        start += end;
    }
}

@end