versor | a home for Mike Bostock 's versor.js | 3D Animation library

by d3 JavaScript Version: v0.2.0 License: Non-SPDX

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kandi X-RAY | versor Summary

versor is a JavaScript library typically used in User Interface, 3D Animation, WebGL applications. versor has no bugs, it has no vulnerabilities and it has low support. However versor has a Non-SPDX License. You can download it from GitHub.

Rotate the globe with the mouse. The naïve method uses mouse.x and mouse.y as proxies for longitude and latitude. It works when the rotation is small, but try to put the globe "upside-down" and suddenly moving the mouse to the left rotates the globe to the right, and vice versa. The correct solution is to track the spherical coordinates of the point that is under the mouse, and apply a rotation to the globe that will move the initial point to the current mouse position. Computing that rotation involves quaternions. This method, introduced by Jason Davies and Mike Bostock, is called versor dragging. This module contains the quaternion & versor functions. For a directly usable package, see d3-inertia.

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Support

versor has a low active ecosystem.

It has 24 star(s) with 5 fork(s). There are 5 watchers for this library.

It had no major release in the last 12 months.

There are 3 open issues and 4 have been closed. On average issues are closed in 201 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of versor is v0.2.0

Quality

versor has 0 bugs and 0 code smells.

Security

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

versor code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

versor has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

versor releases are available to install and integrate.

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

Top functions reviewed by kandi - BETA

kandi has reviewed versor and discovered the below as its top functions. This is intended to give you an instant insight into versor implemented functionality, and help decide if they suit your requirements.

Computes the cross product of two vectors .
Divides two vectors .

Get all kandi verified functions for this library.

versor Key Features

No Key Features are available at this moment for versor.

versor Examples and Code Snippets

No Code Snippets are available at this moment for versor.

Community Discussions

Trending Discussions on versor

Rendering independent bones

Using pivot to join tables using Mysql 8 version

MySql 8 concatenating a string

Hierarchical-data using database MySql version 8.0.17

D3 Click event doesn't work after re-appending path

How do I modify my function to add a random source?

How can I make my lines spin with the globe?

QUESTION

Rendering independent bones

Asked 2021-Nov-12 at 19:06

I'm trying to render a model of a hand in a 3D space based on the positions given by the XrHandJointLocationEXT array from the XR_EXT_hand_tracking extension. I am using both GTLF hand models from Valve, which have the correct amount of bones to match the joints defined by the OpenXR specification in the XrHandJointEXT enum.

I do my rendering as follows :

Every frame I update each joint independently by multiplying its current transform with the inverse bind matrice retrieved from the GLTF model. The XrPosef is relative to the center of the 3D space. I am using cglm to handle all the matrice calculations.

...

ANSWER

Answered 2021-Nov-12 at 19:06

Finally found the answer to my problem: the joint order from the GTLF model doesn't match the order XrHandJointEXT, leading to the right transform being applied to the wrong joint.

In my case, my model defined the Wrist node as being the first one and the Palm as the last one, where OpenXR defines XR_HAND_JOINT_PALM_EXT as the first joint, and XR_HAND_JOINT_WRIST_EXT as the second one.

Here's the code for the update function

Source https://stackoverflow.com/questions/69839433

QUESTION

Using pivot to join tables using Mysql 8 version

Asked 2021-Apr-09 at 13:57

I've these two tables t1 and t2 stored an a database MySql version 8.0.17

It's important to say that the table t2 can contain thousands of rows with different unit code (field sUn)...

Instead the table t1 contains only the how and code of each unit (field TABLE_NAME)

...

ANSWER

Answered 2021-Apr-09 at 13:36

In MySQL, sad to say, pivoting is hard to do for a mess of arbitrarily named columns.

This gets the result you want (dbfiddle on db-fiddle.com, which offers MySQL 8.)

Source https://stackoverflow.com/questions/67021424

QUESTION

MySql 8 concatenating a string

Asked 2021-Mar-30 at 11:10

In the table table_c stored an a database MySql version 8.0.17 I have these rows

...

ANSWER

Answered 2021-Mar-30 at 11:10

You're almost there. Add GROUP BY id_contents to the end of your query.

Source https://stackoverflow.com/questions/66869776

QUESTION

Hierarchical-data using database MySql version 8.0.17

Asked 2021-Mar-22 at 18:15

In the table t_contents stored an a database MySql version 8.0.17 I have these rows

...

ANSWER

Answered 2021-Mar-22 at 18:15

You need to concatenate sID_c with a number returned by ROW_NUMBER() window function:

Source https://stackoverflow.com/questions/66751532

QUESTION

D3 Click event doesn't work after re-appending path

Asked 2021-Jan-03 at 01:51

I am trying to recreate this draggable globe from Mike Bostock using D3 but as a svg version. Due to performance issues while dragging I am re-rendering the globe. So far so good. Now I want to implement a click event but it doesn't work. Here it is mentioned that the problem might be the re-appending. A mousedown event is working fine but interferes with the dragging later on. Why is the mousedown event working and the click event not? Hints for restructuring the code to solves this are highly appreciated.

I created a Fiddle for better understanding: Fiddle

PS. I am new to programming and D3, so please don't be too harsh :)

HTML:

...

ANSWER

Answered 2021-Jan-03 at 01:51

You'll never trigger the click as is right now, which you've seen. This is because a click involves both mouse down and mouse up. These interact with the drag behavior, with each triggering the start and end events respectively.

What's happening in your case is the mousedown triggers the drag and the mousedown listener you've added to the paths. Then on mouse up, the drag event listener fires first, removing any paths and associated listeners. The render function adds new paths after the fact, too late to register the event.

There are a number of solutions, but perhaps the easiest is to remove the drag end listener you have and replace it only when a drag actually occurs (not in the start event, in the drag event):

Source https://stackoverflow.com/questions/65545439

QUESTION

How do I modify my function to add a random source?

Asked 2020-Nov-11 at 20:38

I am modifying this example so that I can dynamically add the locations. I need to modify the lineToLondon function to make it accept a dynamic source. Right now, it sets London as the source everytime. In my fiddle, I've defined a new function called lineToLocation that tries to do this, but I can't seem to get it working. I get Uncaught TypeError: Cannot read property 'coordinates' of undefined

My fiddle can be found here: https://jsfiddle.net/p0r6tmqs/2/. Note: I am sourcing the data dynamically, so the source will not be known ahead of time.

...

ANSWER

Answered 2020-Nov-11 at 20:38

i dunno how you initialize src but, i have no problem if i write

Source https://stackoverflow.com/questions/64793277

QUESTION

How can I make my lines spin with the globe?

Asked 2020-Nov-11 at 05:57

I have modified this d3 example to dynamically add the places/dots and red line AFTER the globe is drawn. (Essentially, I want to add data dynamically rather than starting with a fixed set of points like the example does). The red dotted line gets drawn but, as the globe spins, the lines stay in the same position. How do I get my lines to spin with the globe like they do in the example? My fiddle: https://jsfiddle.net/6qhvt8aL/2/

...

ANSWER

Answered 2020-Nov-11 at 05:57

You update everything in the refresh function except the lines, you just need to update those as well.

You can't use svg.selectAll(".lines").attr("d", lineToLondon) because you have a g with a class lines holding all the paths with that class. Instead you can use:

Source https://stackoverflow.com/questions/64780519

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

Vulnerabilities

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Install versor

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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