本文实例为大家分享了ios实现波浪效果的具体代码，供大家参考，具体内容如下
代码：
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@interface viewcontroller ()
@property (strong, nonatomic) cadisplaylink *displaylink;
@property (strong, nonatomic) cashapelayer *shapelayer;
@property (strong, nonatomic) uibezierpath *path;
@property (strong, nonatomic) cashapelayer *shapelayer2;
@property (strong, nonatomic) uibezierpath *path2;
@end
@implementation viewcontroller
- (void)viewdidload {
[super viewdidload];
_shapelayer = [cashapelayer layer];
_shapelayer.frame = cgrectmake(0, 100, 375, 150);
[self.view.layer addsublayer:_shapelayer];
_shapelayer2 = [cashapelayer layer];
_shapelayer2.frame = cgrectmake(0, 100, 375, 150);
[self.view.layer addsublayer:_shapelayer2];
_shapelayer.fillcolor = [[uicolor yellowcolor] colorwithalphacomponent:0.3].cgcolor;
_shapelayer2.fillcolor = [[uicolor bluecolor] colorwithalphacomponent:0.3].cgcolor;
_displaylink = [cadisplaylink displaylinkwithtarget:self selector:@selector(drawpath)];
[_displaylink addtorunloop:[nsrunloop mainrunloop] formode:nsrunloopcommonmodes];
}
- (void)drawpath {
static double i = 0;
cgfloat a = 10.f;//a振幅
cgfloat k = 0;//y轴偏移
cgfloat ω = 0.03;//角速度ω变大，则波形在x轴上收缩（波形变紧密）；角速度ω变小，则波形在x轴上延展（波形变稀疏）。不等于0
cgfloat φ = 0 + i;//初相，x=0时的相位；反映在坐标系上则为图像的左右移动。
//y=asin(ωx+φ)+k
_path = [uibezierpath bezierpath];
_path2 = [uibezierpath bezierpath];
[_path movetopoint:cgpointzero];
[_path2 movetopoint:cgpointzero];
for (int i = 0; i < 376; i ++) {
cgfloat x = i;
cgfloat y = a * sin(ω*x+φ)+k;
cgfloat y2 = a * cos(ω*x+φ)+k;
[_path addlinetopoint:cgpointmake(x, y)];
[_path2 addlinetopoint:cgpointmake(x, y2)];
}
[_path addlinetopoint:cgpointmake(375, -100)];
[_path addlinetopoint:cgpointmake(0, -100)];
_path.linewidth = 1;
_shapelayer.path = _path.cgpath;
[_path2 addlinetopoint:cgpointmake(375, -100)];
[_path2 addlinetopoint:cgpointmake(0, -100)];
_path2.linewidth = 1;
_shapelayer2.path = _path2.cgpath;
i += 0.1;
if (i > m_pi * 2) {
i = 0;//防止i越界
}
}
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://www.cnblogs.com/jukaiit/archive/2018/05/16/9046802.html