imagebuffer | Fast per-pixel manipualtion for Canvas or WebGL | Canvas library

by mattdesl JavaScript Version: 3.0.1 License: No License

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | imagebuffer Summary

imagebuffer is a JavaScript library typically used in User Interface, Canvas, Three.js, WebGL applications. imagebuffer has no bugs, it has no vulnerabilities and it has low support. You can install using 'npm i imagebuffer' or download it from GitHub, npm.

[DEPRECATED] Fast per-pixel manipualtion for Canvas or WebGL

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Security

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Support

imagebuffer has a low active ecosystem.

It has 39 star(s) with 3 fork(s). There are 3 watchers for this library.

It had no major release in the last 12 months.

There are 1 open issues and 0 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of imagebuffer is 3.0.1

Quality

imagebuffer has 0 bugs and 0 code smells.

Security

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

imagebuffer code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

imagebuffer does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

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

Deployable package is available in npm.

Installation instructions are not available. Examples and code snippets are available.

imagebuffer saves you 1269 person hours of effort in developing the same functionality from scratch.

It has 2853 lines of code, 0 functions and 22 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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imagebuffer Key Features

No Key Features are available at this moment for imagebuffer.

imagebuffer Examples and Code Snippets

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Community Discussions

Trending Discussions on imagebuffer

Iterate over a collection of function items with generic bounds of associated types

How to draw a line at the corner of a square with CAShapeLayer in Swift

Can someone explain how chained functions work when there is a prototype function in the chain in JS?

Threading WriteableBitmap to Image control

How to return cv::Mat in nodejs addon

objective-c: cv::Mat to CVPixelBuffer

Put multiple Attachments to CouchDB

CIDetector crashing while processing CMSampleBuffer

How do I get from an image::ImageBuffer to a actix_web::HttpResponse

node-tesseract failed to load languages

QUESTION

Iterate over a collection of function items with generic bounds of associated types

Asked 2021-Jun-04 at 15:12

I'm trying to detect if two square tiles are symmetries of each other, by iterating over the 8 symmetries of the square, applying each of the symmetry transforms to one of the tiles, and comparing the result of that with the other tile.

All of the transforms have the same inputs and outputs. I'd like to loop over them.

I'm using the image crate, which exports the transforms I need, with signatures like this:

...

ANSWER

Answered 2021-Jun-04 at 15:12

As documented in the Reference under Function item types (emphasis added):

When referred to, a function item, or the constructor of a tuple-like struct or enum variant, yields a zero-sized value of its function item type. That type explicitly identifies the function - its name, its type arguments, and its early-bound lifetime arguments (but not its late-bound lifetime arguments, which are only assigned when the function is called) - so the value does not need to contain an actual function pointer, and no indirection is needed when the function is called.

There is no syntax that directly refers to a function item type, but the compiler will display the type as something like fn(u32) -> i32 {fn_name} in error messages.

Because the function item type explicitly identifies the function, the item types of different functions - different items, or the same item with different generics - are distinct, and mixing them will create a type error:

Source https://stackoverflow.com/questions/67832671

QUESTION

How to draw a line at the corner of a square with CAShapeLayer in Swift

Asked 2021-May-18 at 10:54

I am developing a face recognition application of Vision library, and I am having trouble drawing lines with CAShapeLayer

here is the code after getting camera output:

...

ANSWER

Answered 2021-May-18 at 10:03

You can use this:

Source https://stackoverflow.com/questions/67583567

QUESTION

Can someone explain how chained functions work when there is a prototype function in the chain in JS?

Asked 2021-Apr-24 at 02:20

I'm trying to separate the chained calls from:

...

ANSWER

Answered 2021-Apr-24 at 02:20

The request.post() call is actually returning something and then the next method .attach() is called on that returned data.

You can use

Source https://stackoverflow.com/questions/67238155

QUESTION

Threading WriteableBitmap to Image control

Asked 2021-Apr-14 at 13:22

I am using OpenGL to render a static picture in WPF, on a .NET Core 3.1 platform. The context is initially displayed in a hidden GLFW window. Then I am using glReadPixels to read the context and display it on an Image control on the UI, using the code shown below. The code works fine when not using threading. However, when calling the rendering code through a different thread the image is not displayed. As an intermediate check, I created the using (FileStream... code, which reads the WriteableBitmap and saves it locally and appears to be working correctly; this means that the WriteableBitmap is created correctly. So, I guess the problem is how to transmit a WriteableBitmap to the Image control, both of which were created on different threads. Dispatcher.BeginInvoke does not work for some strange reason.

...

ANSWER

Answered 2021-Apr-14 at 13:22

Try to call w.Freeze() on the background thread before you set the Source of the Image:

Source https://stackoverflow.com/questions/67092579

QUESTION

How to return cv::Mat in nodejs addon

Asked 2021-Mar-14 at 15:34

I've written nodejs addon using V8. I'm stuck at a point where I'm trying to return Mat but all I'm getting is corrupted image with size of 2mb (for particular image). Am I doing something wrong? How can I do this using V8?

CPP code snippet

...

ANSWER

Answered 2021-Mar-11 at 19:08

I don't think a UTF-8 encoded string (or, more accurately: constructing a JavaScript string from raw image data that you're telling the String constructor to treat as UTF-8 and decode accordingly) is the right tool for the job.

Try creating a Buffer directly in your addon, and returning that as the call's result (instead of a v8::String).

Source https://stackoverflow.com/questions/66587190

QUESTION

objective-c: cv::Mat to CVPixelBuffer

Asked 2021-Mar-02 at 09:27

Below code converts cv::Mat to CVPixelBufferRef

...

ANSWER

Answered 2021-Mar-02 at 09:27

I found a solution to this problem after reading this.

The system likes images to be a multiple of 64 bytes per row, presumably for better performance due to cache line alignment. As image resolution is [1000 × 1000], not multiple of 64 hence bytes per row would default to 27840 don't know why... This was causing the problems.

Anyway, if anyone looking for the solution

Source https://stackoverflow.com/questions/66434552

QUESTION

Put multiple Attachments to CouchDB

Asked 2021-Feb-17 at 10:29

I have an .NET Core console application which does some update stuff to my CouchDB. Now I have to add multiple attachments (in this case images) to my doc.

Here (https://docs.couchdb.org/en/stable/api/document/common.html#attachments) in point 1.4.1.1.4 they describe the way, but I get a Bad Request, I think my json is not perfect. So I have a list of images that I convert and then send to DB, here is my code:

...

ANSWER

Answered 2021-Feb-17 at 10:29

So that nobody had a solution, i tried something around and find a way to achieve what i need. I made a new Attachment and added each image manually. Here is an example of the first image:

Source https://stackoverflow.com/questions/66150989

QUESTION

CIDetector crashing while processing CMSampleBuffer

Asked 2021-Feb-13 at 08:01

Problem: I am trying to get facial features through CIDetector from CMSampleBuffer from AVCaptureVideoDataOutput. On execution of the program, 9 out of 10 time the program crashes and only once it runs fine.

Expected Output: Run without crash and print "Happy" on feature detection.

Code:

...

ANSWER

Answered 2021-Feb-13 at 08:01

The return is optional and sampleBuffer is called way too heavy you can only do this

Source https://stackoverflow.com/questions/66182937

QUESTION

How do I get from an image::ImageBuffer to a actix_web::HttpResponse

Asked 2021-Feb-07 at 14:05

The goal is to generate a qr-code using the crate qrcode and send it immediately as a png file for download using actix-web

So far I have:

...

ANSWER

Answered 2021-Feb-07 at 12:49

Like so:

Source https://stackoverflow.com/questions/66085977

QUESTION

node-tesseract failed to load languages

Asked 2021-Jan-24 at 18:02

I copied a code from StackOverflow to read text from a base64 of an image:

...

ANSWER

Answered 2021-Jan-24 at 18:02

Actually my problem was not of setting TESSDATA_PREFIX as environment variable but i had not placed the eng.traineddata file in the base directory.

I placed the eng.traineddata file and the issue was resolved!

Source https://stackoverflow.com/questions/65665871

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install imagebuffer

You can install using 'npm i imagebuffer' or download it from GitHub, npm.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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