canvas | Website to design canvas | Canvas library

by friedrith JavaScript Version: Current License: MIT

X-Ray Key Features Code Snippets(3)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | canvas Summary

canvas is a JavaScript library typically used in User Interface, Canvas, Three.js applications. canvas has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Website to design very easily nice canvas available at canvas.techmind.io.

Support

Quality

Security

License

Reuse

Support

canvas has a low active ecosystem.

It has 4 star(s) with 0 fork(s). There are 1 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 1 have been closed. On average issues are closed in 337 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of canvas is current.

Quality

canvas has no bugs reported.

Security

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

License

canvas 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

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

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

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canvas Key Features

No Key Features are available at this moment for canvas.

canvas Examples and Code Snippets

Run a single canvas .

python

Lines of Code : 24

License : Permissive (MIT License)

Copy

def run(canvas: list[list[bool]]) -> list[list[bool]]:
    """This  function runs the rules of game through all points, and changes their
    status accordingly.(in the same canvas)
    @Args:
    --
    canvas : canvas of population to run the ru

Seed canvas .

python

Lines of Code : 4

License : Permissive (MIT License)

Copy

def seed(canvas: list[list[bool]]) -> None:
    for i, row in enumerate(canvas):
        for j, _ in enumerate(row):
            canvas[i][j] = bool(random.getrandbits(1))

Create a canvas .

python

Lines of Code : 3

License : Permissive (MIT License)

Copy

def create_canvas(size: int) -> list[list[bool]]:
    canvas = [[False for i in range(size)] for j in range(size)]
    return canvas

Community Discussions

Trending Discussions on canvas

MVVM WPF - How to update DataGrid bound to ObservableCollection

Unity. Input.MousePosition is returning coordinates that are way too large for the screen

how can i use web audio api with offscreen canvas?

Delete selected row in DataGrid bound to an ObservableCollection

How to drag html shapes into mxgraph canvas

Cannot dispose of unwanted geometry in three.js application

Drawing to a texture in Unity is very slow

Is there any way to resize UIImageView inside UITableViewCell

Downloading Canvas as JPG/PNG returns blank image

Image sequence starts animating before it's in view

QUESTION

MVVM WPF - How to update DataGrid bound to ObservableCollection

Asked 2021-Jun-15 at 17:35

What I'm trying to do:

I have a WPF app, linked to a SQL-server. I am using the MVVM-light package (I do actually have Prism.Core installed, but I'm not sure if I'm using it or not.... new to MVVM).

There's a DataGrid, bound to an ObservableCollection. I have been trying to implement the PropertyChangedEventHandler, but I can't seem to get it to work.

I have a Delete button bound, and I am able to remove rows, but when I re-open the form, the changes does not carry over.

I tried to change the binding-mode for the DataGrid from OneWay to TwoWay. With OneWay, the changes does not carry over when I re-open the form. With TwoWay, I get this error message when opening the child form (which contains the DataGrid):

System.InvalidOperationException: 'A TwoWay or OneWayToSource binding cannot work on the read->only property 'licenseHolders' of type 'Ridel.Hub.ViewModel.LicenseHoldersViewModel'.'

So, If I then add a set; to my public ObservableCollection licenseHolders { get; }, the program runs, but the previous problem persists, like it did when there was a OneWay mode configuration on the DataGrid.

What do I need to do to get this to work without communicating directly with the Sql-server, which would defy the whole point of using this methodology in the first place?

ViewModel: ...

ANSWER

Answered 2021-Jun-15 at 13:26

You are confusing topics. The VM needs InotifyPropertyChanged events, which you have but are not using, to notify the Xaml in the front-end that a VMs property has changed and to bind to the new data reference.

This is needed for Lists or ObservableCollections. Once that is done, the ObservableCollection will then send notifications on changes to the list as items are added or removed.

Because you miss the first step:

Source https://stackoverflow.com/questions/67986693

QUESTION

Unity. Input.MousePosition is returning coordinates that are way too large for the screen

Asked 2021-Jun-15 at 15:03

The highest Y position that is shown in my camera is 5 and -5. For the X its 10. I'm making a tower defense game and I want the tower to follow my mouseposition after I buy it until I click on a place in the track to build/ place it. I got so confused because I couldn't see my tower at all but now I realized that my mouse coordinates are HUGE. It's up to the hundreds on each axis. My screen obviously can't fit that. I tried even dividing the mouseposition in a vector 2 by 45 and making an offset so it can fit well. Unfortunately I have to change the values depending on the screen size so that can't work. I don't know if it matters but here's my script? This script get's called after the tower gets instantiated from the store. The store button is in the canvas if that helps? Maybe the canvas is why everything is off? How do I fix it?

...

ANSWER

Answered 2021-Jun-15 at 15:03

Screen space is different from world space

In Unity, Input.MousePosition is measured in terms of pixels on your screen. Let's say you have a 1080p monitor - 1920 x 1080 - which is pretty common these days, that means Input.MousePosition will be in the following range when your game is fullscreen:

x: 0 to 1919
y: 0 to 1079

The actual world units - the units as seen in your scene - don't matter at all and can be basically anything.

Another thing of note is that your gameworld is 3D and the physical screen is 2D. Assuming your camera is looking into open space in your world, a single pixel on the screen is represented by an infinite line in the 3D world. This line is called a ray, and you can turn a 2D screen position into a ray via Camera.ScreenPointToRay, and then find what 3D objects that line intersects with via a Physics.Raycast.

Source https://stackoverflow.com/questions/67963373

QUESTION

how can i use web audio api with offscreen canvas?

Asked 2021-Jun-15 at 14:36

As is known, we can't access the dom element from the workers. When I create AudioContext:

...

ANSWER

Answered 2021-Jun-15 at 14:36

Not yet no. Here is a specs issue discussing this very matter, and it is something a lot of actors would like to see, so there is hope it comes, one day.

Note that there is an AudioWorklet API available, which will create its own Worklet (which also works in a parallel thread), but you still need to instantiate it from the UI thread, and you don't have access to everything that can be done in an AudioContext. Still, it may suit your needs.

Also, note that it might be possible to do the computing you have to do in a Worker already, by transferring ArrayBuffers from your UI thread to the Worker's one, or by using SharedArrayBuffers.

Source https://stackoverflow.com/questions/67967751

QUESTION

Delete selected row in DataGrid bound to an ObservableCollection

Asked 2021-Jun-15 at 12:02

I'm writing an app in WPF, trying to use the MVVM-design pattern (which is new to me). I have a DataGrid bound to an ObservableCollection.

What I'm trying to achieve:

Delete the currently selected DataGrid-row using a 'Delete'-button. I've tried a plethora of forum-posts and videos to find a solution. The solution has probably stared me right in the face several times, but at this point I'm more confused than I was when I first started.

Any assistance would be appreciated.

ViewModel (updated with working code, thanks to EldHasp):

...

ANSWER

Answered 2021-Jun-14 at 20:15

You can use Prism. Intall package Prism.Core then Install-Package Microsoft.Xaml.Behaviors.Wpf -Version 1.1.31 packages in your project, in your xaml declare namespace as - xmlns:i="http://schemas.microsoft.com/xaml/behaviors"

Source https://stackoverflow.com/questions/67976219

QUESTION

How to drag html shapes into mxgraph canvas

Asked 2021-Jun-15 at 11:32

I want to drag and drop those 3 shapes into mxgraph canvas (which is the black area).

Note: I want to fully preserve the drag element on the canvas, including shape, size, color, text, etc.

I don't know whether insertVertex does it work. Dragging the orange,red or other box in to the dark area currently does not work.

...

ANSWER

Answered 2021-Jun-02 at 16:26

This works:

Source https://stackoverflow.com/questions/67807102

QUESTION

Cannot dispose of unwanted geometry in three.js application

Asked 2021-Jun-15 at 10:37

In this minimal example, I'm adding a THREE.SphereGeometry to a THREE.Group and then adding the group to the scene. Once I've rendered the scene, I want to remove the group from the scene & dispose of the geometry.

...

ANSWER

Answered 2021-Jun-15 at 10:37

Ideally, your cleanup should look like this:

Source https://stackoverflow.com/questions/67976490

QUESTION

Drawing to a texture in Unity is very slow

Asked 2021-Jun-15 at 08:58

I have been learning Unity for the last few weeks in order to create a simple ant simulation. The way I was rendering everything was writing to a texture the size of the camera in the Update function. It works, but problem is that it is extremely slow, getting only around 3-4 FPS doing so. What could be done to speed it up? Maybe a completely different way of rendering?

Here is the code of a simple test where some Ants just move around in random directions. I have the AntScript.cs attached to the camera with a texture under a Canvas where everything is being written to.

AntScript.cs

...

ANSWER

Answered 2021-Jun-15 at 08:58

In general instead of using Texture2D.SetPixel on individual pixels rather use Texture2D.GetPixels and Texture2D.SetPixels on the entire image (or the section you changed).

This is already way more efficient!

Then using Texture2D.GetPixels32 and Texture2D.SetPixels32 which do use raw byte color format (0 to 255 instead of 0f to 1f) is even faster!

Source https://stackoverflow.com/questions/67981287

QUESTION

Is there any way to resize UIImageView inside UITableViewCell

Asked 2021-Jun-15 at 07:20

I'm trying to add image inside of UITableViewCell with UIImageView, and really added "normally", but when i change the size of UIImageView. I get this error message:

[LayoutConstraints] Unable to simultaneously satisfy constraints. Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. ( "", "", "", " (active)>", "", "" )

Will attempt to recover by breaking constraint

but i've tried many things, like simple things, just image with background and size, example:

...

ANSWER

Answered 2021-Jun-15 at 07:20

I suppose do you want this, but your code is a little bit confused to know what you really you want... Declare your table view, and add constraints :

Source https://stackoverflow.com/questions/67978880

QUESTION

Downloading Canvas as JPG/PNG returns blank image

Asked 2021-Jun-14 at 23:14

So, I'm using canvg and the function which converts svg file to a jpg/png just downloads and ignores id of a svg block element, so I get the blank image, what could be wrong? Maybe Vue does not support converting SVG to jpg/png using canvas. Here is the javascript:

...

ANSWER

Answered 2021-Jun-14 at 23:14

Per the documentation for Canvg.from, you need to pass it your drawing context, not the canvas itself. So change this line:

Source https://stackoverflow.com/questions/67976339

QUESTION

Image sequence starts animating before it's in view

Asked 2021-Jun-14 at 21:10

I'm trying to replicate apple's image sequencing animation - https://www.apple.com/airpods-pro/. I've managed to track down a few examples and they all work great but they all trigger at the top of the page and I want mine to trigger in the middle of the page. I've tried attaching the trigger event to the #graphHolder container but it still starts cycling through the images as soon as you scroll at the top of the page. Can anyone point to where I'm going wrong? Here's a jsfiddle - https://jsfiddle.net/mvyw2bc3/2/

...

ANSWER

Answered 2021-Jun-13 at 21:46

can't you maybe make an intersection observer and make it trigger on a div that is pushed to the bottom of the image (maybe with a position absolute and bottom zero or you know whatever) and then trigger whatever callback function within the observer ? i'm not sure this is of any help but here is a function i made that lets you call a callback function when an element is intersecting

Source https://stackoverflow.com/questions/67962780

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

Vulnerabilities

No vulnerabilities reported

Install canvas

You can download it from GitHub.

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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