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  • transform

    //

    //  MJViewController.m

    //  03-transform

    //

    //  Created by apple on 14-3-24.

    //  Copyright (c) 2014年 itcast. All rights reserved.

    //

    #import "MJViewController.h"

    @interface MJViewController ()

    - (IBAction)leftRotate;

    - (IBAction)up;

    - (IBAction)big;

    @end

    @implementation MJViewController

    - (IBAction)leftRotate {

        // 1.取得头像按钮

        UIButton *head = (UIButton *)[self.view viewWithTag:10];

        

        // 2.向左旋转45°

        // 45  180

        // 角度是正数:顺时针, 角度是负数:逆时针

    //    head.transform = CGAffineTransformMakeRotation(-M_PI_4);

        head.transform = CGAffineTransformRotate(head.transform, M_PI_4);

    }

    - (IBAction)up {

        // 1.取得头像按钮

        UIButton *head = (UIButton *)[self.view viewWithTag:10];

        

        // 2.每次向上移动100的距离

    //    head.transform = CGAffineTransformMakeTranslation(0, -100);

        head.transform = CGAffineTransformTranslate(head.transform, 0, -100);

    }

    - (IBAction)big {

        // 1.取得头像按钮

        UIButton *head = (UIButton *)[self.view viewWithTag:10];

        

        // 2.增大

    //    head.transform = CGAffineTransformMakeScale(1.5, 1.5);

        head.transform = CGAffineTransformScale(head.transform, 1.5, 1.5);

    }

    @end

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  • 原文地址:https://www.cnblogs.com/supper-Ho/p/6202592.html
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