vgl | Object oriented WebGL | Graphics library
kandi X-RAY | vgl Summary
kandi X-RAY | vgl Summary
VGL is a lightweight rendering library for scientific visualization and applications. It provides a object level API for WebGL. The high level API provided by the VGL is essential for building sophisticated visualization applications over the web. For information on how to build VGL on your system please refer to VGL is developed as part of ClimatePipes project which is funded by Department of Energy (DOE).
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QUESTION
I have a question about Windows batch. I have two batch files/scripts, the first one calls the second one, several times with different parameters.
I want to create several environment variables in the first one and pass them as parameters to the second one. In this second batch script the passed variables should be increased each by a value determined in the second batch file. Then the environment variables in first batch file are passed again on the next call of the second batch file and their values should be incremented once again accordingly by the second batch file.
First .bat script:
...ANSWER
Answered 2021-Apr-10 at 21:41Here is the full first batch file rewritten:
QUESTION
The input for OpenRefine is a csv file containing data like this
...ANSWER
Answered 2021-Jan-17 at 18:07It looks like you may be operating in "record mode" as opposed to "row mode." If the facet says 197 true, 2 false, you should only see two rows displayed on the screen when you go to do your delete. If you see more than that try selecting Row mode.
QUESTION
I am using phpseclib and I am trying to login in SFTP using an RSA key:
...ANSWER
Answered 2020-Oct-25 at 21:12I was using an openssh private key starting with -----BEGIN OPENSSH PRIVATE KEY-----
These keys are not compatible with phpseclib
I had to convert it using:
ssh-keygen -p -N "" -m pem -f /path/to/key
QUESTION
I am completely stuck here, so any help would be appreciated :/
I'm trying to learn how to use OpenGL 4.0 using it's Java Bindings, JOGL. It seems like now it's better to use VBO/VAOs as opposed to glBegin/End.
I'm following various sources, but for this specific aspect I used this: https://learnopengl.com/Getting-started/Hello-Triangle (C++)
Unfortunately, when I run my program, it throws the following exception (@ Line 41):
"Exception in thread "AWT-EventQueue-0" com.jogamp.opengl.GLException: Caught GLException: GL_INVALID_OPERATION: Buffer for target 0x8892 not bound on thread AWT-EventQueue-0
"
Here's my full GLEventListener implementing class (Renderer):
...ANSWER
Answered 2020-Sep-21 at 10:50The name of the vertex array object and the buffer object is contained in the IntBuffer
objects vVAO
respectively vVBO
. You missed to assign the content of the IntBuffer
s to the attributes vVAO_ID
respectively vVBO_ID
:
QUESTION
I am trying to remove the duplicate values from a deeply nested array. I've put the structure of the database down below. I want to compare the location of the steps with eachother and check for duplicates. I was thinking about using db.collection.aggregate
, but it becomes a problem when trying to search through all steps since { $unwind: '$mapbox.routes.legs.0.steps' }
requires a specific index for the steps as far as i know.
ANSWER
Answered 2019-May-22 at 14:43At the end I stopped making a seperate file for connecting with mongodb and cleaning the database and started using the already existing API to create a call. In this call I looped through the steps in the database and mapped the location to a key. After that I check if that key already existed and pushed that index to a duplicate array.
Then I proceeded to loop through the duplicate list and spliced the duplicate entries from the list with steps. After that I ran the following function to update the entry: await routeSchema.updateOne({ _id: route._id }, { $set: route });
QUESTION
My http://localhost:8888/VGL/public/category/18?sty=3
When dd($request->sty);
equal 3
however I put $request->sty
in the whereHas
is
...Undefined variable: request
ANSWER
Answered 2019-Mar-20 at 05:41Try this
If you want to use any variable inside the where closure
then you have to pass that variable inside the use($variable)
QUESTION
This should be a really obvious answer and somewhere I've probably mucked up a line or two, and yet I can't seem to get triangles to draw to a framebuffer.
What I'm trying to do is get two triangles to a large render buffer object, with a framebuffer attached, and then in one of four windows display a slice of the larger render buffer/framebuffer using glBlitFramebuffer.
I'm using init_FB()
to define the triangles to render and the RBO in which to render those triangles. I've created a renderbuffer object and a framebuffer object associated with the renderbuffer object. In the compute_FB()
function I am binding the framebuffer of the RBO and then making a call to draw into that framebuffer. Before drawing the triangles, I am clearing the framebuffer to a specific color, royalblue
.
In the first window, called window
, what's appearing is only the color royalblue
defined by the function (compute_FB()
) that draws into the framebuffer of the renderbuffer object. However, none of the triangles are being drawn eventhough I have a glDrawArrays(...)
function being called at the end of compute_FB()
.
I'm beginning to believe that the RBO needs its own context in which to render successfully, but I don't know how to set up a context for a RBO. I thought contexts were only for windows in GLFW.
Explanation of CodeI am basing my attempt on the initial OpenGL Redbook example 01-triangles. In this example I've coded four unique windows and want eventually to copy a large RBO/framebuffer to each of the four windows - currently I'm just focusing on the first display.
I am using OpenGL4.5 with GLFW for windowing.
CODE ...ANSWER
Answered 2018-Oct-11 at 07:43Your initialization functions are attempting to share state between contexts. A context of GL is an instance of all GL state, contexts only share data if instructed to do so explicitly when initialized. I would recommend just using one window, and glviewport to partition it.
Perhaps you also made the mistake of not making your objects an array of arrays, as each glgen overwrites them. This isn't a mistake of GL but of C array syntax.
QUESTION
I am a bit confused since I have opened a question, I would like to be a bit more specific here.
I have numerous files that contain German letters mostly in iso-8859-15 or UTF-8 encoding. In order to process them it is mandatory to transform all letters to lowercase.
For example I have a file (encoded in iso-8859-15 ) that contains:
Dr. Rose in M. Das sogen. Baptisterium zu Winland, eins der im Art. "Baukunst" (S. 496) erwähnten Rundgebäude in Grönland, soll nach Palfreys "History of New England" eine von dem Gouverneur Arnold um 1670 erbaute Windmühle sein. Vgl. Gust. Storm in den "Jahrbüchern der königlichen Gesellschaft für nordische Altertumskunde in Kopenhagen" 1887, S. 296.
Ää Öö Üü ẞß Örebro
Text Ää Öö Üü ẞß Örebro
should become: ää öö üü ßß örebro
.
However, tolower()
does not seem to apply on capital letters such as Ä, Ö, Ü, ẞ eventhough i tried forcing locale as mentioned in this SO post
Here is the same code as posted in my other question:
...ANSWER
Answered 2018-Apr-09 at 14:59Use std::ctype::tolower
, not std::tolower
:
QUESTION
I am trying to run OpenGL Red book examples. I am able to compile the projects in MS VS 2017. However, when I execute some of the examples it throws me the following exception.
Exception thrown at 0x00000000 in Project_1_1.exe: 0xC0000005: Access violation executing location 0x00000000. occurred
This occurs for the line:
...ANSWER
Answered 2017-Oct-08 at 17:17There are several things that should be checked if you are sure that your graphiccard supports OpenGL 4.5:
- Make sure that your application actually requests a OpenGL 4.5 context (For example, by setting the correct
glfwWindowHint
for that) - Make sure that the application uses the correct card. This is especially an issue on Notebooks with both, a dedicated GPU (AMD or NVidia) and an integrated one from Intel. The setting for this should be somewhere in the Nvidia control panel or in the AMD equivalent.
QUESTION
maybe you can help me: I try to parse this xml file
...ANSWER
Answered 2017-Jun-11 at 12:34It is because there is mixture of text and tags in xml. You have to modify your xml as its separated with tag. I have added TEST
tag here. You can change it by whatever you want
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