space

How can I convert 3D space coordinates to 2D space coordinates?

由 江枫思渺然 提交于 2019-12-09 09:23:40
问题 I'm using a Lua API. I'm trying to transform 3D space coordinates to 2D space coordinates. I've asked google but I can't find anything apart from snippets using OpenGL function. I don't need source code or anything just a simple way on how to do it? I can acquire the Camera's perspective, the original position to be transformed, window size and aspect ratio if that's any help? Thanks in advance for any suggestions :) 回答1: If you're talking about transforming world-space (x,y,z) coordinates to

edit css style of an element with a space in its class name

由 时光怂恿深爱的人放手 提交于 2019-12-09 05:22:58
问题 I'm creating a tumblr them and I have to write an external CSS file but I am having trouble editing the css style of the post elements. This its structure: <li class="post quote"> {other code} </li> The problem is that the class name has a space in it. How would I create a CSS class to access this? And yes, I know I can just put a style attribute in the element tag but I was kind of hoping for another option. 回答1: The problem is that the class name has a space in it. This is not possible in

Why OpenCV has no specialize data structure for region?

由 自古美人都是妖i 提交于 2019-12-09 01:47:54
问题 I have been using MVTec's Halcon Image Processing Library for half a year and OpenCV for 1 year. 1. One thing I found that Halcon much outperforms OpenCV is that OpenCV has no specialize data structure for region. This is lots of waste if I only want to store a small region in a large space. Shouldn't OpenCV have some specialized data structure for region other than Mat Class. 2. Second one, which is the result of the previous one, is that OpenCV is awkward to iterate through regions. Imagine

Smarty prints a WHITE SPACE between variables (in Loop)?

由 不羁的心 提交于 2019-12-08 12:45:56
问题 Assigning from PHP: $smarty->assign("myArrays", Array( Array( "title" => "ABC", "whatever" => 45), Array( "title" => "DEF", "whatever" => 78) )); In Smarty (v3.1.16) .tpl file: {assign "seperator" "|"} {foreach from=$myArrays item=currentItem} {$seperator}{$currentItem.title}{$seperator} {/foreach} Then it will output as: |ABC| |DEF| .. WITH A "SPACE" in-between . And i think it is only in such LOOPS. Why is so? And how to solve it please? 回答1: Use no spaces in the loop: {foreach from=

python regex: capture parts of multiple strings that contain spaces

由 浪子不回头ぞ 提交于 2019-12-08 11:42:26
问题 I am trying to capture sub-strings from a string that looks similar to 'some string, another string, ' I want the result match group to be ('some string', 'another string') my current solution >>> from re import match >>> match(2 * '(.*?), ', 'some string, another string, ').groups() ('some string', 'another string') works, but is not practicable - what I am showing here of course is massively reduced in terms of complexity compared to what I'm doing in the real project; I want to use one

How externally redirect url using htaccess, when url contain space, number or dash

由 旧时模样 提交于 2019-12-08 09:40:02
问题 I am new in htacces. I want to create htaccess like stackoverflow. Check any url of stackoverflow like "hide file extension in url by htaccess". If you put .html/.php/.asp/.abc/.xyz anything it will redirect to "hide file extension in url by htaccess" only even you put / at last it has no effect Means I want to say url filename contain any keyboard character and it will redirect externally. below are my current htaccess RewriteEngine on # To internally RewriteCond %{REQUEST_FILENAME} !-d

jQuery flot more space at the top

由 谁说胖子不能爱 提交于 2019-12-08 02:53:06
问题 How can i create more space at the top of the charts? Now i get this: But i want this: This is my JS code: $("table.chart").each(function() { var colors = []; $("table.chart thead th:not(:first)").each(function() { colors.push($(this).css("color")); }); $(this).graphTable({ series: 'columns', position: 'replace', width: '100%', height: '200px', colors: colors }, { xaxis: { tickSize: 1 } }); }); 回答1: Adjust the autoscaleMargin property of the y axis. From the API: The "autoscaleMargin" is a

eclipse 下调整jdk和tomcat的jvm参数

由 怎甘沉沦 提交于 2019-12-07 14:11:08
eclipse 下调试和运行,往往会出现调整java.lang.OutOfMemoryError: Java heap space 产生的原因我猜测是使用了maven,subversion,mylar,wtp等插件，还有就是大文件,对象的操作导致,具体原因还不确定。 在网上找了找相关资料，找到了解决办法：方法(1)操作后没有起作用,不过可以参考其中查看内存的技巧 .具体解决看方法(2),(3) 一 、在eclipse根目录，找到eclipse.ini，在其中指定初始heap size和最大heap size: -xms 64M -xmx 256M 其中， -xms是初始heap size, -xmx 是最大heap size。 在实际使用过程中，我发现我一启动eclipse时，heap size使用大概是40m，多时可以达到128m，所以我的设置是 -xms 64m -xmx 128m 对于permgen space: 在eclipse.ini中指定参数： -permsize 256m -maxpermsize 784m 二 、修改jdk 使用内存(此方法可行) 找到eclispe 中window->preferences->Java->Installed JRE ，点击右侧的Edit 按钮，在编辑界面中的 “Default VM Arguments ”选项中，填入如下值即可。

Adding spaces to items in list (Python)

由 回眸只為那壹抹淺笑 提交于 2019-12-07 07:49:27
问题 I'm a Python noob and I need some help for a simple problem. What I need to do is create a list with 3 items and add spaces before and after every item. For example: l1 = ['a', 'bb', 'c'] should be transformed into: [' a ',' bb ',' c '] I was trying to write something like this: lst = ['a', 'bb', 'c'] for a in lst: print ' a ' ...and so on for the other elements, but I get a syntax error. Can anyone suggest me a working way to do this? Thanks. 回答1: As always, use a list comprehension: lst = [

Android Listview remove any space between items

由 こ雲淡風輕ζ 提交于 2019-12-07 05:19:46
问题 I want to remove any space between different items in a ListView. Code: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:id="@+id/wrapper" android:padding="0dp" android:layout_height="wrap_content" > <TextView android:id="@+id/comment" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:paddingLeft="10dip" android:paddingRight=
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