pan

Using OpenGL I'm attempting to draw a primitive map of my campus. Can anyone explain to me how panning, zooming and rotating is usually implemented? For example, with panning and zooming, is that simply me adjusting my viewport? So I plot and draw all my lines that compose my map, and then as the user clicks and drags it adjusts my viewport? For panning, does it shift the x/y values of my viewport and for zooming does it increase/decrease my viewport by some amount? What about for rotation? For rotation, do I have to do affine transforms for each polyline that represents my campus map? Won't

计算机网络从交换技术、使用对象、传输介质、覆盖范围和拓扑结构五个方面进行分类。 按覆盖范围可分为：广域网（WAN）、城域网（MAN）、局域网（LAN）、个域网（PAN）。 按拓扑结构可分为：总线型网络、星型网络、环型网络、网状型网络。 按交换技术可分为：电路交换网络、报文交换网络、分组交换网络。 按使用对象可分为：公用网络、专用网络。 按传输介质可分为：有线网络、无线网络。 来源： https://www.cnblogs.com/Wendows/p/11667776.html

I have some images that I loaded from a remote source stored in Bitmap variables and I want to display them. In addition to switching between these images the user should also be able to zoom and pan them. My first idea was to somehow pass them via an intent to the built-in gallery application but this doesn't seem to be possible. A solution that is suggested in several places is using a WebView since it already supports zooming and panning. My question is how does my Bitmap data get into the WebView? Do I have to write it to a file first, which I would have to remove again later, or is there

Update 7/17/14: We now have a new version of this tutorial fully updated to Swift – check it out! If you need to detect gestures in your app, such as taps, pinches, pans, or rotations, it’s extremely easy with the built-in UIGestureRecognizer classes. In this tutorial, we’ll show you how you can easily add gesture recognizers into your app, both within the Storyboard editor in iOS 5, and programatically. We’ll create a simple app where you can move a monkey and a banana around by dragging, pinching, and rotating with the help of gesture recognizers. We’ll also demonstrate some cool extras like

I have implemented a simple D3.js line chart that can be zoomed and panned. It is based on Stephen Bannasch's excellent example here . The domain of my data is [0, n] in the x dimension. How can I limit zooming and panning to this domain using the built-in zoom behavior (i.e. using mousewheel events)? I want to prevent users from panning past 0 on the lower end or n on the upper end, for example they should never be able to see negative values on the x-axis, and want to limit zooming to the same window. The examples that I found based on Jason Davies work using extent( [...],[...],[...] ) seem

搜索镜像 从docker官方镜像仓库搜索镜像 docker search [OPTIONS] TERM OPTIONS: --automated ：只显示自动创建的镜像，默认值为fasle --filter，-f ：显示过滤后的搜索结果 --limit ：显示的最大搜索结果，默认值为25 --no-trunc : 显示完整的镜像描述，默认值为fasle --stars ：列出收藏数不小于指定值的镜像，默认值为0 搜索ubuntu镜像 [root@docker ~]# docker search ubuntu NAME DESCRIPTION STARS OFFICIAL AUTOMATED ubuntu Ubuntu is a Debian-based Linux operating s... 6198 [OK] rastasheep/ubuntu-sshd Dockerized SSH service, built on top of of... 90 [OK] ubuntu-upstart Upstart is an event-based replacement for ... 74 [OK] ubuntu-debootstrap debootstrap --variant=minbase --components... 30 [OK] torusware/speedus

I have created a zoom and pan class for an ImageView. Features I am trying to create. - It pans on single finger touch and movement - It zooms and pans on two finger touch and movement For the most part this works very well. It has a slight bug when I do the following: - I pan around with one finger (Status: No problem) - I put down a second finger, zoom and pan (Status: No problem) - I release my second finger (Status: The image jumps a little) Was hoping someone could help me solve this. I am thinking that it must have to do with resetting the mLastTouchX and mLastTouchY in "case MotionEvent

Linux Test Project(一) http://www.vimlinux.com/lipeng/2014/09/12/ltp/ 五 12 九月 2014 By peng.lee Testing Linux, one syscall at a time. LTP是从SGI开始的,后由IBM 思科 富士通 SUSE Redhat等组织开发的.该工具的目标是建立一个测试套件用来验证linux的可靠性,健壮性及稳定性.LTP测试套件包含了linux内核及相关功能的工具. 本文主要介绍关于ltp的一些基本信息. LTP项目主页: ltp Github链接: ltp LTP是一个验证ltp内核功能和稳定性的测试集.用来支持linux开发过程中,通过更多的单元测试,减少bug的引入,降低bug对用户的影响.LTP并不是用来做benchmarking测试的,而是更专注与功能,问题回归及稳定性测试.LTP同样不是一个标准测试,标准测试有 LSB . 一 基本结构 LTP测试套件是由包含一个基本动作和一个确认基本动作工作是否正常的测试用例组成.这个测试用例通常的测试结果是PASS/FAIL.一个测试程序是包含一个或多个测试用例的可执行程序.测试程序包括相应的测试参数,这些参数包括内存测试容量,临时文件位置,网络测试类型等等.Test tags 是用于匹配测试程序和一组命令行参数.Test

Apologies if this is a simple case of me being blind to the obvious, but I am trying to put together a page that shows a map of the world (data sourced from a TopoJSON file) in Mercator projection centered on the Pacific. I.e. Europe on the left, America on the right and Australia in the middle. A bit like this... From this point I want to be able to zoom and pan the map to my hearts desire, but when I pan east or west, I want the map to scroll 'around' and not come to the end of the World (I hope that makes sense). The code I am currently working on is here (or at the following Gist ( https:/