亚洲免费在线-亚洲免费在线播放-亚洲免费在线观看-亚洲免费在线观看视频-亚洲免费在线看-亚洲免费在线视频

Introducing Cocoa Animation

系統 2242 0

Smooth Moves

?

you first ask mover for its animator , and you then send setFrame: to that instead.?

?

    - (void)move {
     if(isRight) {
         [[mover animator] setFrame:leftFramePosition];
      } else {
         [[mover animator] setFrame:rightFramePosition];
      }
     isRight = !isRight;
}
  

?

?

animator:

The image now smoothly animates between its initial state
and the docked state.

?

Animation with no threads and no synchronization!

?

?

?

?

二:Animation and the Animator Proxy

?

Finding Animations

?

寫道
First it calls the animationForKey: method with the key that is being changed (in our example frame would be used). animationForKey:
first looks in the receiver’s animations dictionary, and if an
animation is found, it is returned. (We will eventually be adding custom
animations to this dictionary in Chapter 3, Animation Types, on
page 28.) If not, then the class method defaultAnimationForKey: is called,
and that animation is returned. The proxy then invokes the animation,
which in turn animates the change for the property.
If nil is returned from animationForKey:, then the change in the property
is not animated; instead, the value is simply passed to the underlying
object.

?

Introducing Cocoa Animation

?

The default animation is a CABasicAnimation that does a basic linear
interpolation between the fromValue and the toValue. By default, the
current value of the changing property is used as the from value, and
the new value is used as the toValue for the animation. The animator
then passes responsibility to an instance of CAAnimation for doing the
interpolation between the fromValue and toValue and animating these
changes.

?

?

三:Animation and Interpolation

?

寫道
The default interpolation is a straight line that starts at time zero and fromValue and finishes at the end time and toValue.

? Introducing Cocoa Animation

?

?

Something important to keep in mind here is that Core Animation is time-based, not frame-based.

?

?

Introducing Cocoa Animation


更多文章、技術交流、商務合作、聯系博主

微信掃碼或搜索:z360901061

微信掃一掃加我為好友

QQ號聯系: 360901061

您的支持是博主寫作最大的動力,如果您喜歡我的文章,感覺我的文章對您有幫助,請用微信掃描下面二維碼支持博主2元、5元、10元、20元等您想捐的金額吧,狠狠點擊下面給點支持吧,站長非常感激您!手機微信長按不能支付解決辦法:請將微信支付二維碼保存到相冊,切換到微信,然后點擊微信右上角掃一掃功能,選擇支付二維碼完成支付。

【本文對您有幫助就好】

您的支持是博主寫作最大的動力,如果您喜歡我的文章,感覺我的文章對您有幫助,請用微信掃描上面二維碼支持博主2元、5元、10元、自定義金額等您想捐的金額吧,站長會非常 感謝您的哦!!!

發表我的評論
最新評論 總共0條評論
主站蜘蛛池模板: 久久久久亚洲香蕉网 | 亚洲最大色网站 | 四虎成人免费网址在线 | 玖玖玖精品视频免费播放 | 99视频精品国在线视频艾草 | 兔子bt资源在线 | 国产免费一区二区三区在线 | 久草久草在线视频 | 日b黄色 | 国产精品午夜免费福利视频 | 天啪天天久久天天综合啪 | 婷婷综合激情 | 成人毛片基地 | 67194老司机精品午夜 | 成人毛片网 | 九九99视频在线观看视频观看 | 久久天天躁狠狠躁夜夜躁综合 | 黑人特黄aa毛片 | 国产精品成aⅴ人片在线观看 | 色四月婷婷 | 色婷婷亚洲 | 日日摸夜夜添夜夜添一区二区 | 99久久国产免费中文无字幕 | 久久久久久久尹人综合网亚洲 | 884hutv四虎永久7777 | 久久99中文字幕久久 | 九九九九九九伊人 | 亚洲欧美日韩国产专区一区 | 亚洲另类在线视频 | 天天操天天草 | 九七影院97影院理论片 | 欧美精品一区二区三区在线播放 | 国产二区精品 | 久久综合爱 | 色综合久久精品中文字幕首页 | 日本aaaa级毛片在线看 | 国内精品免费视频 | 国产在线欧美精品中文一区 | 亚洲欧洲国产成人精品 | 4hu四虎| 九九热在线免费视频 |