qtree | a simple c template quadtree class , header only , use | 3D Printing library

by andyzhshg C++ Version: Current License: MIT

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kandi X-RAY | qtree Summary

qtree is a C++ library typically used in Modeling, 3D Printing applications. qtree has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

a simple c++ template quadtree class, header only, use it as STL. see qtree_test.cpp, it's a simple demo on how to use it;.

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qtree has a low active ecosystem.

It has 11 star(s) with 3 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

qtree has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of qtree is current.

Quality

qtree has no bugs reported.

Security

qtree has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

qtree is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

qtree releases are not available. You will need to build from source code and install.

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qtree Key Features

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qtree Examples and Code Snippets

No Code Snippets are available at this moment for qtree.

Community Discussions

Trending Discussions on qtree

QEMU: How to connect a SD card to a specific controller?

Random DependencyProperty.UnsetValue when multibinding

How can I read and use coordinates from a CSV file in my Quadtree [Python]?

How to make a modular Makefile for a modular c project?

Is there a way to use LaTeX packages in the exams2canvas of R/exams?

How to map JSON coming from Mongoose to Vue and Quasar?

Create crossing branches in a tree using tikzpicture and qtree

Is the Math.random() function actually a fractal?

Python PyQt5 QTreeView set row Background Colour

QEMU doesn't create a second serial port (Ubuntu x86-64 guest and host)

QUESTION

QEMU: How to connect a SD card to a specific controller?

Asked 2020-Nov-23 at 19:01

I want to connect a SD card to the first SD controller of an i.MX6 SoC (the one with base address 0x2190000). However QEMU defaults to adding it to the third controller (tested with version 4.2 and 5.1).

QEMU arguments:

...

ANSWER

Answered 2020-Nov-23 at 19:01

This ought to be possible, but currently it is not, due to a bug/missing feature in QEMU. This was reported here: https://bugs.launchpad.net/qemu/+bug/1895895 and there is mailing list discussion of it here: https://lore.kernel.org/qemu-devel/CAFEAcA_PFGc2Ka-egqYqzMq0Nu_aRiNUPif0yntg4L56UTi7MQ@mail.gmail.com/ but nobody has yet got round to writing the (fairly small) patch to implement the fix.

In summary, the SoC device object in QEMU for the imx6 SoC should create aliased "sd-bus0", "sd-bus1", etc for the 4 controllers. Then on the command line you would be able to add ",bus=sd-bus2" to the -device sd-card option to tell QEMU which specific bus to plug it into. At the moment that doesn't work because all the sd-buses have the same name.

Source https://stackoverflow.com/questions/64964659

QUESTION

Random DependencyProperty.UnsetValue when multibinding

Asked 2020-Oct-27 at 16:31

I got a weird problem.

I got a collection of spaceObjects (planets) in an observablecollection. These objects move around the screen so their X and Y axis change all the time. This is the xaml code for it:

...

ANSWER

Answered 2020-Oct-27 at 16:13

Your XYPositionConverter must handle this special value. WPF will use DependencyProperty.UnsetValue when probing the converter. This typically occurs just as your DataTemplate is created, perhaps out of view.

So, just make sure to handle this in your converter:

Source https://stackoverflow.com/questions/64558185

QUESTION

How can I read and use coordinates from a CSV file in my Quadtree [Python]?

Asked 2020-Jun-10 at 17:56

I am building a Quadtree using python, and have managed to create a solution for randomly generated points. the main class is the QTree class:

...

ANSWER

Answered 2020-Jun-10 at 17:56

You can add a new function to load the data from file and set the points:

Source https://stackoverflow.com/questions/62309527

QUESTION

How to make a modular Makefile for a modular c project?

Asked 2020-May-15 at 19:14

I have a C program that has this code:

...

ANSWER

Answered 2020-May-15 at 19:11

Is this the actual makefile you're using? Because you've not defined either the variable PROG1 or the variable PROG2, so if your makefile looks like that that's clearly the problem.

However, even if you fix that this is dangerous. You should not put both types of objects into the same subdirectory. You'll have to remember to always do a make clean when switching between them because make has no way to know if the previous build used the MATRIX or QTREE settings and you'll be trying to link object files compiled with different settings.

You should create two different OBJ directories, one for each, and use them when building that program.

Source https://stackoverflow.com/questions/61825554

QUESTION

Is there a way to use LaTeX packages in the exams2canvas of R/exams?

Asked 2020-Apr-08 at 19:12

I'm trying to setup up an exam using R/exams, using the function exams2canvas(). My questions contain LaTeX code that requires to use some packages (in particular tikz and tikz-qtree and a few other tikz libraries) but I cannot figure out how to import them.

To create a pdf, I manually modified the tex template (plain.tex) in the exams package of R, by adding the following two lines:

...

ANSWER

Answered 2020-Apr-08 at 19:08

The problem is that for Canvas output, just like for other HTML-based formats, the LaTeX code needs to be converted to HTML. And the HTML converters we use (tth and pandoc) both just support a limited number of LaTeX commands beyond the base LaTeX distribution.

Thus, you need to compile tikz graphics in LaTeX and then convert them to a graphics format supported by HTML, e.g., SVG vector graphics or alternatively raster graphics such as PNG or JPG. This functionality is offered by the include_tikz() function in R/exams.

I have modified your exercise so that the tikz code is only included as LaTeX for exams2pdf() and exams2nops() - which then need to be adapted to load tikz and tikz-qtree. Otherwise, the tikz code is rendered to SVG for which magick plus pdf2svg is used. Alternatively, you could also render to PNG, for example.

So you can do:

Source https://stackoverflow.com/questions/61039920

QUESTION

How to map JSON coming from Mongoose to Vue and Quasar?

Asked 2019-Aug-02 at 19:07

I have a Mongoose backend and wrote some REST APIs to supply data to my Vue/Quasar frontend. It's still basic, uses Node/Express http for the API calls, no Axios or the like yet. I got some simple CRUD get/put/post/delete APIs working, but now have a more complex one that is based on a specific Mongoose query to return me the children of a node.

Mongoose provides me the data in this format:

...

ANSWER

Answered 2019-Aug-02 at 19:07

If I understand correctly, donvis is the data from mongoose, which is an object. Objects don't have a length property

You should try this:

Source https://stackoverflow.com/questions/57331677

QUESTION

Create crossing branches in a tree using tikzpicture and qtree

Asked 2019-Jul-17 at 22:05

To illustrate an illegal prosodic structure, I need to create a metrical structure tree featuring crossing branches. I've seen it done in another paper (from the 80s) and I want to create the same structure in Tex then work from there.

Link to image (can't insert as I only just joined): https://www.pastepic.xyz/image/NtmmH

The code below creates the legal version of the tree. I want to recreate the one in the picture above using similar code.

...

ANSWER

Answered 2019-Jul-17 at 22:05

Here is a possible solution.

The idea is to generate the text independently of the tree, in such a way that every letter is a named node. Then connect the nodes of the tree to these letters. The connection can be at will regular or include irregular branches

Source https://stackoverflow.com/questions/57081933

QUESTION

Is the Math.random() function actually a fractal?

Asked 2019-Apr-17 at 22:10

I am following the quadtree tutorial from The Coding Train (YT), and I got my quadtree working and drawing! My problem is that the points in using Math.random()*canvas.width and Math.random()*canvas.height to create a random point on the canvas isn't giving me a random pattern of points, It's fractal (like the Sierpinski Triangle).

I've looked up the chaos game (thanks to Numberphile) and understand enough to know that Math.random() isn't working. Here is my code that is generating the points.

...

ANSWER

Answered 2019-Apr-17 at 22:10

In your subdivide function:

Source https://stackoverflow.com/questions/55728973

QUESTION

Python PyQt5 QTreeView set row Background Colour

Asked 2019-Apr-16 at 10:29

I am trying to set the background colour (color) for a) a whole QTreeView, and b) for specific rows in a QTreeView within Python.

I have found setColor and setBackgroundColor methods, but neither seem to work for me with QTreeView nor QStandardItem.

Lots of googling shows many conversations about it, but I have not been able to relate those to my code below.

Full Code is below, but two attempts to set the colour are:

...

ANSWER

Answered 2019-Apr-16 at 10:29

To set the whole of a QTreeView Background Colour this works for me:

Source https://stackoverflow.com/questions/55675522

QUESTION

QEMU doesn't create a second serial port (Ubuntu x86-64 guest and host)

Asked 2018-Oct-19 at 16:16

I run my QEMU version 3.0.0 by:
x86_64-softmmu/qemu-system-x86_64 -m 2560 -hda img.qcow2 -serial pty -serial pty

My host is an Ubuntu Desktop 16.04 and my guest is a fresh (i.e. default configuration) Ubuntu Server 18.04. Both are x86-64.

Upon starting, QEMU immediately prints:

...

ANSWER

Answered 2018-Oct-19 at 16:16

I found my mistake.

Because the guest startup takes so much time (at least on my machine), I always immediately used loadvm after_startup_snapshot.

I now tried to let the guest go through startup, and the redirection of /dev/ttyS1 worked perfectly.

Source https://stackoverflow.com/questions/52801787

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Vulnerabilities

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Install qtree

You can download it from GitHub.

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