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3D Ray-Quad intersection test in java

由 自闭症网瘾萝莉.ら 提交于 2019-12-09 06:15:46
问题 In 3D space I am trying to determine if a ray/line intersects a square and if so, the x and y position on the square that it intersects. I have a ray represented by two points: R1 = (Rx1, Ry1, Rz1) and R2 = (Rx2, Ry2, Rz2) And the square is represented by four vertices: S1 = (Sx1, Sy1, Sz1), S2 = (Sx2, Sy2, Sz2), S3 = (Sx3, Sy3, Sz3) and S4 = (Sx4, Sy4, Sz4). I’ve found lots of algebraic equations for this online but none seem to fit this problem exactly. Ideally I would like the answer in

Command line is too long的解决办法

由 我的梦境 提交于 2019-12-09 05:32:45
  本人用IDEA启动一个新的项目，在项目启动时，出现下面的故障码： Error running 'Application'; Command line is too long.Shorten command line for Application or also for Spring Boot default configuratin.   于是启动失败。   后来经过排查，发现idea在项目启动时其实是执行了如下的命令行： "C:\Program Files\RedHat\java-1.8.0-openjdk-1.8.0.212-3\bin\java.exe" -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:D:\Dev\IDE\IDEA\IntelliJ IDEA 2018.3.5\lib\idea_rt.jar=51042:D:\Dev\IDE\IDEA\IntelliJ IDEA 2018.3.5\bin" -Dfile.encoding=UTF

Javascript Error Line Numbers

由 我的梦境 提交于 2019-12-09 02:29:59
问题 I have a jsp with lots of javascript code. Whenever there is a javascript error on the page, shown in the status bar of the IE browser, the line number reported to contain the error, does not match with the line number that actually contains the error. I am doing a right click>view source to find the line number reported. But that line does not contain the error. The error, I assume, is in some other line. What could be the reason for the erroneous line numbers being reported. Please Help.

Ellipse and line intersection JAVA

由 主宰稳场 提交于 2019-12-09 01:38:45
问题 I have a ellipse with a mid-point 'mid' an a horizontal radius 'h' and a vertical radius 'v' and a Line2D. Now I need some code to calculate the two intersection points of the two. I already tried some code and tried it on my own but there always is a mistake. Does somebody have some working code? 回答1: You will need to use algebra to solve the two equations, and it will get a little bit messy. First you have to write out the ellipse (1) (x/h)^2 + (y/v)^2 = 1 and the line in the format (2) y =

Search String and Return Line PHP

由 ♀尐吖头ヾ 提交于 2019-12-09 00:47:23
问题 I'm trying to search a PHP file for a string and when that string is found I want to return the whole LINE that the string is on. Here is my example code. I'm thinking I would have to use explode but cannot figure that out. $searchterm = $_GET['q']; $homepage = file_get_contents('forms.php'); if(strpos($homepage, "$searchterm") !== false) { echo "FOUND"; //OUTPUT THE LINE }else{ echo "NOTFOUND"; } 回答1: Just read the whole file as array of lines using file function. function getLineWithString(

I can not adjust the edittext linespacing

由 末鹿安然 提交于 2019-12-08 18:48:34
I want to adjust the line spacing of edittext. I use a long line, and when I cross the line, linespacing is applied. However, linespacing does not apply when I input Enter key. This Library fixed the EditText linespacing issue https://github.com/hanks-zyh/LineHeightEditText use this code for line space between two line android:lineSpacingExtra="10dp" whole code is <EditText android:id="@+id/edittext" android:layout_margin="@dimen/activity_horizontal_margin" android:layout_width="match_parent" android:layout_height="wrap_content" android:lineSpacingExtra="10dp" //set the line space between 2

Overlapping line segments in 2D space

由 余生颓废 提交于 2019-12-08 17:39:57
问题 I need to find whether two lines overlap each other. I have the intersection code which returns 0, if two lines are parallel. But then I need to know if these two parallel lines overlap. Edit: A C B D ----------------------------------------------- Line 1: A-B Line 2: C-D I need to find if Line 1 overlaps Line 2, but both lines can have a slope > 0. 回答1: You can compare to find if there is no over lap. you will have less comparisons in this way thus very efficient. Do following comparisons D

sed delete remaining characters in line except first 5

由 ☆樱花仙子☆ 提交于 2019-12-08 17:36:18
问题 what would be sed command to delete all characters in line except first 5 leading ones, using sed? I've tried going 'backwards' on this (reverted deleting) but it's not most elegant solution. 回答1: This might work for you (GNU sed): echo '1234567890' | sed 's/.//6g' 12345 Or: echo '1234567890' | cut -c-5 12345 回答2: Try this (takes 5 repetitions of 'any' character at the beginning of the line and save this in the first group, then take any number of repetition of any characters, and replace the

How to detect the last line in awk before END

由 耗尽温柔 提交于 2019-12-08 17:22:38
问题 I am trying to add last line to the file which I am creating. How is it possible to detect the last line of a file in awk before END ? I need to do this because the variables don't work in the END block, so I am trying to avoid using END . awk ' { do some things..; add a new last line into file;}' before END , I don't want this: awk 'END{print "something new" >> "newfile.txt"}' 回答1: One option is to use getline function to process the file. It returns 1 on sucess, 0 on end of file and -1 on

替换两个字符间的内容

由 人盡茶涼 提交于 2019-12-08 17:15:32
f = open("1.xml", 'r+', encoding='utf-8')all_the_lines = f.readlines()#注意指针问题f.seek(0)#指针位置为开头f.truncate(0)#清空文件# print(f.tell())for line in all_the_lines: a = "/data/voice/" if a in line: ss = line.split(a)[1] line = line.replace(ss, '' + "\n") # 加\n目的是为了和下面的对齐 line = line.replace(a, '') line = line.replace("<Input>", '') line = line.replace("</Input>", '') f.write(line)f.close() <?xml version="1.0" encoding="utf-8"?> <Executions> <Execution name="VoiceCase_Lite-S1_Static_online" type="voice"> <Turn> <Input>/data/voice/20190725_035326_2_voice_in_dump.wav</Input> <Action>Action://scenemode
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