[x3d-public] JSON to STL. Function bounties.

[Christoph Valentin]

Hi John, long no contact :-)

May I respond to your question?
>>> Christoph Valentin, what’s the  preferred multiuser web software for X3D?

Well, I really feel deeply honoured, to be asked questions like that.

Unfortunately, I am not in the position to issue any hint, I am not even sure, if I understand the connection to your current subject.

First, I am currently really busy with the duties in connection with my job, which has NOTHING to do with Web3D Graphics (however, this being busy might move to the background a little bit during holiday season).

Second, I really did nothing more than playing around a little bit with the Network Sensor in my SrrTrains v0.01 project. Maybe I have disclosed/encountered/discovered a few very interesting topics, true, but I have written all my findings to my blogs, GitHub account and sourceforge account, nothing hidden.

I have even promised that I will start my "Fiat A" project as a kind of indicative "lighthouse project" to indicate, when I will have got positive evidence about such Web3D multiuser projects having started at the industry (this does NOT mean that such projects have NOT been started at the industry, when I do NOT start the "Fiat A" project).

If you think I can help in any further way that does not consume lots of staff hours, please tell me.

Have a nice holiday season
CP/V
 
 
 

Gesendet: Dienstag, 20. Dezember 2022 um 22:36 Uhr
Von: "John Carlson" <yottzumm at gmail.com>
An: "Christoph Valentin" <christoph.valentin at gmx.at>, "X3D Graphics public mailing list" <x3d-public at web3d.org>
Betreff: Re: JSON to STL. Function bounties.

Current code is here:
 
https://github.com/coderextreme/JsonToStl
 
It’s a pretty clean project, no real build script (make.sh), needs more test cases.
 
If you want to be a contributor, send me your email and specify your license of choice.  Code you work on should include your license in each source file you modify and the main LICENSE file.  If you want to create a python blender scripts to go from X3D to STL, that will be cool too.  I don’t want a lot of confusion about which IDE to use.   I use vim.  Use what you like, but don’t create a lot of dependencies, instead use some you didn’t install like easy to read make.bat file to pair with make.sh.
 
Remember there’s Git Bash, so you can assume bash will be on the system that git uses.
 
My approach i am considering taking is:  first, choosing a set of flat meshes to cover sphere, cone, cylinder, generically. After that, we can cover more complicated meshes like extrusions, 2D geometry and NURBS geometry
 
So i think that sphere might be a grid mesh, cylinder would be 3 meshes, and cone is 3 meshes.
 
My plan is to do sphere first, since that will cover my use case.
 
John
 

On Tue, Dec 20, 2022 at 2:58 PM John Carlson <yottzumm at gmail.com[mailto:yottzumm at gmail.com]> wrote:
Wondering, is an X3dToStl.xslt code development  planned soon?
 
The other thing i can work on is continuing JSON to Python conversion.
 
Is there something i can write that i will use on a regular basis?
 
Christoph Valentin, what’s the  preferred multiuser web software for X3D?
 
Would syntax highlighting for vim and/or neovim be useful?
 
John
 

On Tue, Dec 20, 2022 at 6:17 AM John Carlson <yottzumm at gmail.com[mailto:yottzumm at gmail.com]> wrote:

Here are the functions that are planned or implemented in JsonToStl.  Please express which ones you'd like to see implemented next.
 
Thanks!
 
Also, please discuss what type of LICENSE would be required. If at all possible, I'd like to make some money off this, perhaps by setting up a conversion website or patreon.
 
Yes, I'm aware of the STL output in Blender! I'm working on this to enhance X3DJSONLD.  Is conversion to STL still desired?
 
Thanks,

John
 
function convertJsonToStl(json) {
function initializeLDNode(json, obj) {
function findLDNodeInList(use, LDNodeList) {
function toNormals(json, LDNodeList, ParentNode) {
                IndexedFaceSet : function(obj, LDNode) {
                Group : function(obj, LDNode) {
                Shape : function(obj, LDNode) {
                Box : function(obj, LDNode) {
                IndexedTriangleSet : function(obj, LDNode) {
                IndexedTriangleStripSet : function(obj, LDNode) {
                IndexedTriangleFanSet : function(obj, LDNode) {
                IndexedLineSet : function(obj, LDNode) {
                Normal : function(obj, LDNode) {
                Coordinate : function(obj, LDNode) {
                Transform : function(obj, LDNode) {
                "@scale" : function(obj, LDNode) {
                "@rotation" : function(obj, LDNode) {
                "@translation" : function(obj, LDNode) {
                "@normalPerVertex" : function(obj, LDNode) {
                "@size" : function(obj, LDNode) {
                "@vector" : function(obj, LDNode) {
                "@point" : function(obj, LDNode) {
                "@normalIndex" : function(obj, LDNode) {
                "@coordIndex" : function(obj, LDNode) {
                "@index" : function(obj, LDNode) {
function vector_product(u, v) {
function normalize(v) {
function triangle_normal(a, b, c) {
function printNormal(prefix, x, y, z, output, transform) {
function printSFVec3f(prefix, x, y, z, output, transform) {
function IndexedTriangle(LDNode, output, transform) {
function transformLDNodesToTriangles(LDNode, output, parentTransform) {
                IndexedFaceSet: function(LDNode, output, transform) {
                Box: function(LDNode, output, transform) {
                SixSided: function(LDNode, output, transform, x, y, z) {
                Square: function(LDNode, output, transform, square) {
                Triangle: function(LDNode, output, transform, coords) {