FlipCounter | A javascript flipping number counter without images | Runtime Evironment library

by waldobronchart JavaScript Version: Current License: No License

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kandi X-RAY | FlipCounter Summary

FlipCounter is a JavaScript library typically used in Server, Runtime Evironment, React, Nodejs applications. FlipCounter has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A javascript flipping number counter without images (css-only).

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Quality

Security

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Support

FlipCounter has a low active ecosystem.

It has 33 star(s) with 15 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 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 FlipCounter is current.

Quality

FlipCounter has 0 bugs and 0 code smells.

Security

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

FlipCounter code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

FlipCounter 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

FlipCounter 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.

FlipCounter saves you 30 person hours of effort in developing the same functionality from scratch.

It has 83 lines of code, 0 functions and 3 files.

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

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FlipCounter Key Features

No Key Features are available at this moment for FlipCounter.

FlipCounter Examples and Code Snippets

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Community Discussions

Trending Discussions on FlipCounter

How to detect reversed faces (flipped normals)?

Handling CSRF authenticity token for navigator.sendBeacon requests in rails

QUESTION

How to detect reversed faces (flipped normals)?

Asked 2019-Apr-10 at 20:32

I need to load several STL files in a scene, some of which have reversed/flipped faces. This can be easily fixed (visually) using a double-sided material, but what I try is to visualize the wrong faces, switching the material index from blue to red.

If I understand, a mirrored/flipped/reversed face is being drawn clockwise instead of counter-clockwise. But are we talking about the three vectors that form the face? If so, the winding order is the order set at face.a, face.b and face.c? Or should I have to compare the face index value to know the order the face is drawn?

I set up a JSFiddle to ilustrate the problem: this STL model has 10 faces, and 3 of them are reversed or flipped. Using a FaceNormalsHelper you can see that those 3 normal helpers point to the inside of the model, instead outside. I´ve tried 6 different ways to check this, some of them are extracted from the code at computeFaceNormals(), with no luck. I´ve also examined the FaceNormalsHelper to see how it works, but it simply draws a line from the face centroid in the normals direction, but it never gets to calculate if it´s pointing inside or outside.

(Note: in order to change from one method to another, you must change the variable at the start of the script. Method 1 manually overrides these three faces material index, just to visualize the wrong ones (as a validation of all the other methods). No other one gets the good results.. But method 2 and 3 are really really close to it, although somehow two other faces are detected as flipped. I wonder if the face angle has something to do with this)

EDIT: The method suggested by @manthrax works perfectly, comparing edges of each face with all the other ones. If the edge is drawn the same way (example: face 1 edge a-b matches face 2 edge a-b, instead of b-a), it´s flipped. Basically, if a face has two or more edges marked as flipped, we can say the whole face is flipped. Check the JSFiddle to see it working.

...

ANSWER

Answered 2019-Apr-10 at 05:41

First off, "flipped" faces are totally subjective. You need to decide on some parameters. For a convex object, there is a non-subjective definition.. for instance that the face normal, dotted with one of the face vertices, is > 0.

For non-convex objects you can make some guesses based on the winding order of the vertices, and whether any 2 edges contains the same ordering, implying that you have 1 front facing and 1 back facing triangle sharing an edge. (Which of those triangles is flipped, isn't necessarily identifiable in the non-convex case though.)

First, you'll have to .mergeVertices on your geometry, so that vertices are shared across faces... I think stl defines unique vertices for every triangle, so there's no concept of an "edge" that is shared by two faces.

Then you can loop through each face.. and basically any 2 edges that share the same 2 vertices, should have opposition ordering, or that faces are facing opposite each other..

So if 2 faces have an edge like 3,2 and 2,3 then they are both facing the same direction.. and the faces are consistent.

If two different faces both have an edge that are 3,2 and 3,2, then they are facing opposite directions, and you could flag both faces as possibly being flipped. The faces that get flagged the most times are the ones that are probably actually flipped.

Those are the best guess tests I can think of to determine inside/outside, but it's a tricky problem.

Blender has a couple "recalculate normals" methods for recomputing "inside"/"outside" that I think operate on a similar principle.. so you could also look at those.

Source https://stackoverflow.com/questions/55602671

QUESTION

Handling CSRF authenticity token for navigator.sendBeacon requests in rails

Asked 2018-Apr-26 at 15:39

    $(window).on('unload', function() {
        db.flipCounter.get(gon.slug, function(obj) {
            var payload = {
                slug: gon.slug,
                localFlipCount: obj.fc,
                time: Date.now()
            }

            navigator.sendBeacon('/analytics', csrfProtect(payload))

        })
    })

    function csrfProtect(payload) {
        var param = $("meta[name=csrf-param]").attr("content")
        var token = $("meta[name=csrf-token]").attr("content")

        if (param && token) payload[param] = token
        return new Blob([JSON.stringify(payload)], { type: "application/x-www-form-urlencoded; charset=utf-8" })
    }

...

ANSWER

Answered 2018-Apr-26 at 15:39

I just learned that it isn't possible to customize the request method, provide custom request headers, or change other processing properties of the request and response when using a Beacon request. See the W3C Editor's Draft for Beacons here.

Use the fetch api instead.

Source https://stackoverflow.com/questions/49946055

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

Vulnerabilities

No vulnerabilities reported

Install FlipCounter

You can download it from GitHub.

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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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