創(chuàng)建90度扇形坐標(biāo)數(shù)組
- (NSArray *)creatPointArrayWithNumber:(NSInteger)number point:(CGPoint)point r:(CGFloat)r {
NSMutableArray *array = [NSMutableArray array];
CGFloat f = M_PI_2/(number-1);
for (int i = 0; i < number; i ++) {
CGFloat y = r * cos(f * i);
CGFloat x = r * sin(f * i);
CGPoint newPoint = CGPointMake(point.x - x, point.y - y);
NSString *pointStr = NSStringFromCGPoint(newPoint);
[array addObject:pointStr];
}
return array;
//得到point:CGPointFromString(array[0]);
}
要展開的時(shí)候?qū)⑸刃巫鴺?biāo)賦值給子控件
消失的時(shí)候?qū)⑾ё鴺?biāo)賦值給子控件
