一、理論基礎(chǔ)

請(qǐng)參考 CGAffineTransform簡(jiǎn)單分析

Demo下載地址：私信回復(fù)“06”

二、效果演示

三、實(shí)現(xiàn)代碼

3.1：位移變換

-(void)positionAnimation{ _DemoView.transform = CGAffineTransformIdentity; [UIView animateWithDuration:1.0f animations:^{ _demoView.transform = CGAffineTransformMakeTranslation(100, 100); }]; }

3.2：縮放變換

-(void)scaleAnimation{ _demoView.transform = CGAffineTransformIdentity; [UIView animateWithDuration:1.0f animations:^{ _demoView.transform = CGAffineTransformMakeScale(2, 2); }]; }

3.3：旋轉(zhuǎn)變換

-(void)rotateAnimation{ _demoView.transform = CGAffineTransformIdentity; [UIView animateWithDuration:1.0f animations:^{ _demoView.transform = CGAffineTransformMakeRotation(M_PI); }]; }

3.4：組合變換

-(void)combinationAnimation{ //仿射變換的組合使用 _demoView.transform = CGAffineTransformIdentity; [UIView animateWithDuration:1.0f animations:^{ CGAffineTransform transform1 = CGAffineTransformMakeRotation(M_PI); CGAffineTransform transform2 = CGAffineTransformScale(transform1, 0.5, 0.5); _demoView.transform = CGAffineTransformTranslate(transform2, 100, 100); }]; }

3.5：矩陣的反轉(zhuǎn)

-(void)invertAnimation{ _demoView.transform = CGAffineTransformIdentity; [UIView animateWithDuration:1.0f animations:^{ //矩陣反轉(zhuǎn) _demoView.transform = CGAffineTransformInvert(CGAffineTransformMakeScale(2, 2)); }]; }

四、補(bǔ)充

• CGAffineTransformIdentity ： 單位矩陣變換，一般用于仿射變換的初始化或者還原。
• CGAffineTransformEqualToTransform(CGAffineTransform t1,
• CGAffineTransform t2) ： 判斷兩個(gè)變換矩陣是否相等
• CGAffineTransformConcat(CGAffineTransform t1,
• CGAffineTransform t2) ： 得到兩個(gè)矩陣相加后得到的最終矩陣
• CGPoint CGPointApplyAffineTransform(CGPoint point,
• CGAffineTransform t) ： 某點(diǎn)通過(guò)矩陣變換之后的點(diǎn)
• CGSize CGSizeApplyAffineTransform(CGSize size, CGAffineTransform t) ： 某個(gè)size通過(guò)矩陣變換之后的size
• CGRect CGRectApplyAffineTransform(CGRect rect, CGAffineTransform t) ： 某個(gè)Rect通過(guò)矩陣變換之后的區(qū)域

五、Demo下載地址

Demo下載地址：私信回復(fù)“06”

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