Ios 将方形UIView划分为截面图C

我有一个方形UIView，我需要用两种不同的颜色将其划分为横截面，如图所示

//Define the drawing path
UIBezierPath *path1 = [[UIBezierPath alloc] init];
//path Move to start drawing position
[path1 moveToPoint:CGPointMake(200, 100)];
//Draw a straight line from the starting position to（100, 200）
[path1 addLineToPoint:CGPointMake(100, 100)];
//To draw a line from (100, 200) to (200, 200)
[path1 addLineToPoint:CGPointMake(100, 200)];
//close path
[path1 closePath];

CAShapeLayer *layer1 = [[CAShapeLayer alloc] init];
layer1.path = path1.CGPath;
layer1.fillColor = [UIColor colorWithRed:0.88 green:0.87 blue:0.87 alpha:1.0].CGColor;
[self.view.layer addSublayer:layer1];

UIBezierPath *path2 = [[UIBezierPath alloc] init];
[path2 moveToPoint:CGPointMake(200, 100)];
[path2 addLineToPoint:CGPointMake(200, 200)];
[path2 addLineToPoint:CGPointMake(100, 200)];
[path2 closePath];

CAShapeLayer *layer2 = [[CAShapeLayer alloc] init];
layer2.path = path2.CGPath;
layer2.fillColor = [UIColor colorWithRed:0.89 green:0.57 blue:0.53 alpha:1.0].CGColor;
[self.view.layer addSublayer:layer2];

结果如下：

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在视图上添加一层，并为其提供不同的颜色。使用贝塞尔路径来塑造你的图层。你能详细说明一下吗。。！！？引用