transform

web前端入门到实战：CSS3实现3D动画

由 ◇◆丶佛笑我妖孽 提交于 2019-12-14 02:27:59
本篇文章给大家带来的内容是关于css实现3d动画特效的代码实例，有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助！ 一、动画属性 1.transform-style: flat | preserve-3d 动画的形式 flat：默认值平面，也就是没有3d效果 preserve-3d：3d效果展示 如果要用3D表现，这个属性是必须启用的，当然注意属性要加各种前缀。 （这个属性可以把一个处于2维的div变为3d空间，把这个属性比作一个相机的摄像头,这个div内的内容会以3d的形式通过摄像头的形式反馈给你,他的子元素才会享受3d效果,子元素以下的元素就不会有3d效果。） 2.transform-origin：50% 50%; 旋转移动围绕的轴线,默认是中心,可以设left,right,top,bottom,也可以设值数值，这样可以调整旋转移动所围绕的轴线，完成诸如翻页，开门等动作。 (这就相当于你的眼镜啦,位置不同效果也就不同了) 3.perspective 视角 值越小，透视距离越近，效果越明显 该属性为定义3D变换的元素与视图的距离，也就是透视距离。这个属性应添加到视图元素(变换元素的父元素)上。 这是3d动画必备的属性，如果不添加这个属性，则动画会变成平面效果。 一般用在舞台元素也就是容器上，这样会让该容器中所用动画元素使用一个视角，这个属性还可以单独用在每个元素中

CSS transition only one transform function

由 爷，独闯天下 提交于 2019-12-14 00:33:52
问题 Is there a way to animate only one transform function? For example i only want my transition on scale function. How will i do this .my-class { transition: transform; } .large { transform: scale(2) rotate(90deg); } <div class="my-class"></div> <div class="my-class large"></div> 回答1: I played around with your code a little and YES you can. Just assign the different transform functions to different classes and use only those classes that you want...like so. Importantly DO NOT FORGET to use the

how to integrate properties defined on multiple rows using a data.frame or data.table long format approach

由 时光总嘲笑我的痴心妄想 提交于 2019-12-13 22:39:24
问题 I have been recently starting to use the data.table package in R. I find it super-convenient for transforming and aggregating data. One thing that I miss is how do you transform data that are defined on multiple rows? Do I need to reshape the data.frame/table in a wide format first? Say you have the following data table: dt=data.table(group=c("a","a","a","b","b","b"), subg=c("f1","f2","f3","f1","f2","f3"), counts=c(3,4,5,8,9,10)) and for each group you want to calculate the relative frequency

XSLT to convert the nested elements with comma separated

由 谁说胖子不能爱 提交于 2019-12-13 21:19:50
问题 I am trying to just convert any xml file to CSV format. the issue as when the xml has nested / child elements those values are not output as comma separated. i have tried lot of examples in other posts but none of them works out as needed. I am a beginner to XSLT any help to this very helpful. <S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"> <S:Body> <trade> <createdBy>1</createdBy> <createdOnDate>2</createdOnDate> <Payment> <indicator>3</indicator> <updateBy>4</updateBy> <

css transform matrix and equivalent css transform are different

由 断了今生、忘了曾经 提交于 2019-12-13 21:14:19
问题 I have a simple css transform, and it works nicely when I use css transform matrix, According to this answer css transform matrix values are equivalent to the rotate, skew and scale functions as follows matrix(a, b, c, d, e, f) arguments a and d are for scaling the element in the X and Y direction respectively. Identical to that of the scale(a, d) method. arguments b and c are for skewing the element. Identical to that of the skew(b, c) method. arguments e and f are for translating the

Change value of Transform variable in Unity

由 ￣綄美尐妖づ 提交于 2019-12-13 21:07:02
问题 I have a camera which follows a car when a player is driving. The issue is the car : transform variable in the UnityScript looks like this var car : Transform; Which means I would have to drag the transform onto the little box in the side panel to assign it. Is it possible to assign this variable within the code like: var car : Transform = Player1; //BTW Player1 is the transform I want The reason why it needs to be changed is in the code I want it to change between Player1 Player2 Player3

Why does transform fail silently?

由 巧了我就是萌 提交于 2019-12-13 19:31:53
问题 Say I have a frame with a column of dates: test.frame$alt_dates <- c('2001-01-04', '2001-05-11', '2001-05-14', '2001-07-24', '2003-12-24', '2004-07-21', '2004-10-15', '2004-12-15', '2005-03-17', '2005-07-18') They start out as characters. Okay: class(test.frame$alt_dates) [1] "character" If I try to use transform to make those dates into dates: transform(test.frame, alt_dates <- as.Date(alt_dates) R just prints my frame to the console. If I transform the column directly it works fine: test

for-loop through ID-List & counting Values

由 泄露秘密 提交于 2019-12-13 17:50:58
问题 I hope someone can help me with my problem, I know using two for-loops is not very efficient but that was my first solution. I have a data frame (AllPat) with eye-patients (patient-id, date and visit ->'o'perations or 'c'heckups) #Pat Date Visit #1,l 2015-03-30 c #1,l 2015-06-03 o #1,l 2015-07-01 o #1,l 2015-07-20 c #1,l 2016-03-16 o #1,l 2016-04-13 o #1,l 2016-05-09 c #2,l 2014-12-23 c #2,l 2015-01-21 o #2,l 2015-03-16 c #2,l 2015-11-23 o And I want to count the operation-blocks for each

Scale group of UIViews but keeping its position

由 你说的曾经没有我的故事 提交于 2019-12-13 17:31:22
问题 I am trying to scale multiple UIViews at once with the pinch gesture(On the base view). Though it looked straight forward, I am facing hard time getting it working properly. Assume I have 3 views stacked like this ---------------------------------------------- | | | ------- -------- | | | | | | | | | V1 | --------------- | | | | | | X | v2 | Y | v3 | | | ------- --------------- | | | | -------- | --------------------------------------------- On pinch, I am scaling each of the 3 views by

特征数据清洗 编码 标准化

由 ▼魔方 西西 提交于 2019-12-13 16:49:15
特征工程是机器学习的第一步，涉及清理现有数据集、提高信噪比和降低维数的所有技术。大多数算法对输入数据有很强的假设，当使用原始数据集时，它们的性能可能会受到负面影响。 另外有些特征之间高度相关，在其中一个特征提供了足够的信息之后，与之相关的其他特征往往无法提供额外的信息。这时我们就需要了解如何减少特征数量或者仅选择最佳特征。 一、scikit-learn数据集 scikit-learn提供了一些用于测试的内置数据集，这些数据集包含在sklearn.datasets中，每个数据集都包含了输入集（特征集）X和标签（目标值）y。比如波士顿房价的数据集（用于回归问题）： from sklearn.datasets import load_boston boston = load_boston() X = boston.data y = boston.target print(‘特征集的shape：’, X.shape) print(‘目标集的shape：’, y.shape) 特征集的shape： (506, 13) 目标集的shape： (506,) 可以看到，这个数据集包含了506个样本、13个特征，以及1个目标值。 假如我们不想使用scikit-learn提供的数据集，那么我们还可以使用scikit-learn提供的工具来手动创建特定的数据集。相关的方法有： make
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