d3 zoom transform

Browsers such as IE and chrome and zoomStill a few years ago, zoom it was just IE's own private toy, but now, in addition to the Firefox browser, the other, especially chrome and mobile browsers have been well supported by the Zoom attribute:zoomThe literal meaning is "zoom", a concept commonly used in photography. You can also follow this concept for the

zooming (zoom) is another important visual operation, mainly using the mouse's scroll wheel.1. Definition of ZoomScaling is defined by D3.behavior.zoom ().var zoom = D3.behavior.zoom (). scaleextent ([1, ten]). On ("Zoom", zoomed), function zoomed () {circles_group.attr ("

First, the demandThere are two ways to achieve the ImageView zoom rotation effect:1, the bottom layer plus scrollview, the use of ScrollView properties to achieve.2, using gestures, kneading gestures, rotating gestures and so on.Here I choose the second type: gesture implementation.Ii. Description of the problemGeneral gesture processing, the ImageView to transform processing, but I found that each time the

Not much to say, first piece look effect, cat share, must boutiqueThis small program mainly realizes the Click arrow key can let the icon move up and down and zoom in and out and rotate the function, click the picture will show another picture.Click Transform其实用到了按钮的两个状态，再State Config中的Default还有Highlighted的两个状态下background内容图片的设置is actually a few states of the button:Defaults: Default stateHighlighted: highl

Commonly used to see, there are a few places do not understand.The zoom function that I wrote. On ("Zoom", function () {That.svg_obj.select (". X.axis"). Call (Xaxis); var _lines = That.lines; for (var i=0; i　　D3 API Zoom

[UIView commitanimation];}}@endThe use of/**transform * *-(ibaction) Translate{On the original basis, the x-axis does not move and the y-axis moves up 100When moving up, the y axis is negative, when you move to the left, the x axis is negative, the x axis is positive when you move to the right.Self.view.head.transform=cgaffinetransformtranslate (head.transform,0,-100);}-(Ibaction) Rotate{The angle is positive, clockwise, or counterclockwise. Angle mus

-FI; B = Fir1 (+, bw/fs); % filter cutoff frequency is 0.5bwx2 = Filter (B, 1, x1); c = X2 (1:floor (FS/BW): N); % resampling N1 = Length (c), F = linspace (FI, FA, N1), y = ABS (FFT (c))./N1 * 2; y = Circshift (y, [0, Floor (N1/2)]); % moves the amplitude of the negative half axis over the endApplication Examples:FS = 2048; T = 100;t = 0:1/fs:t;x = * COS (2*pi*110.*

DOCTYPE HTML Public "-//W3C//DTD XHTML 1.0 transitional//en" "http://www.w3.org/TR/xhtml1/DTD/ Xhtml1-transitional.dtd ">HTMLxmlns= "http://www.w3.org/1999/xhtml">Head>Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8" />title>Image scalingtitle>Scriptsrc= "Js/modernizr.js">Script>Head>Body>Scripttype= "Text/javascript">Window.addeventlistener ('Load', eventwindowloaded,false);functioneventwindowloaded () {Canvasapp ();}functionCanvassupport () {returnModernizr.canvas;}functionCan