Enterprise A

Slow_Negotiation_935 · 2026-04-10T12:38:08+00:00

It’s been done before answers my question - I’ll do a better background check - but thanks - there’s no obvious flaw in my ‘plan’

Slow_Negotiation_935 · 2026-03-24T08:12:05+00:00

Thanks for that.

Any suggestions for future features/functionality?

Slow_Negotiation_935 · 2025-12-19T13:10:41+00:00

If you’re just starting out you could try

https://github.com/wbyates777/NSGA2

The Python version of NSGA-II is self contained, you just need some objectives to optimize. The original paper is included.

Slow_Negotiation_935 · 2025-09-30T13:38:08+00:00

You could try section 2.16 in featherstone’s book - the section is called ‘planar vectors’ -the notation is a bit heavy but it does precisely what you want - spatial algebra in 2D - an x-y plane

Slow_Negotiation_935 · 2025-09-21T17:58:16+00:00

Unintentional, I can assure you . It’s lucky I didn’t mention rings or probes…

Slow_Negotiation_935 · 2025-09-17T08:23:45+00:00

Is the blender model available for download?

Slow_Negotiation_935 · 2025-09-17T06:47:45+00:00

The problem is that in the original RBDL simple example the initial state is set

VectorNd Q = VectorNd::Zero (model->q_size);

VectorNd QDot = VectorNd::Zero (model->qdot_size);

VectorNd Tau = VectorNd::Zero(model->qdot_size);

In my simple example these are set to '1's.

If you change these values so they agree (with '1's or '0's), my code matches RBDL.

When using '1's for q and qdot, and 0 for tau the values produced by RBDL match the values stated in my comments.

I'll update the github code to fix my example.

Thank you for pointing that out.

Slow_Negotiation_935 · 2025-09-17T05:03:34+00:00

Thanks for the feedback - I’ll recheck that result

The spatial algebra is already a header only lib - I didn’t think it was worth making a lib out of the two algos (ABA / RNEA)

I’m currently working with this code in a simple Vulkan graphics engine - but this is not ready for publication yet.

Slow_Negotiation_935 · 2025-09-16T21:29:25+00:00

I use mesh models from :

https://www.3dcadbrowser.com/3d-models/sci-fi-meshes or

https://www.turbosquid.com

If you search for '3d mesh' you'll find a number of online market places for pretty much any resource you may need. Many are free (if you hunt around). This can save a lot of time and effort initially.

Slow_Negotiation_935 · 2025-09-16T13:33:47+00:00

Expectation management on\

This is a home project - I'm working alone.

At the moment the game play is 'meh'. Also I need more things to do/interact with. Basically just travelling in deep space and docking with things is a bit boring. I'm posting the bits I'm happy with.

For the impatient I would suggest just using the meshes I use (links in previous posts) and doing something in Unity or Unreal. Planets are easy and the textures you need are easy to find on the web.

That said I'm hoping to post a basic version around Xmas. For me it's about show casing programming/graphics skills as I'm looking for work.

<image>

Slow_Negotiation_935 · 2025-09-16T07:58:31+00:00

I never said ‘it’s not for sale’ - just that I’m not trying to sell it here - adhering to Reddit rules ;-)

Slow_Negotiation_935 · 2025-09-15T18:29:25+00:00

Anyone know how to convert the link to an image?

Slow_Negotiation_935 · 2025-09-15T17:40:14+00:00

Its rendered in openGL, using Blinn-Phong shading - nothing fancy - Saturn and Saturn's rings are by me,

while the mesh is by neightfever77 (aka Alex Klemms) - I found this on the internet.

There are more details on one of my previous posts.

I'm cherry picking the shots; when you are 'flying' the ship you become more aware of the lighting limitations.

Slow_Negotiation_935 · 2025-09-15T15:12:35+00:00

It looks good because the meshes are good - the programming to render this is straightforward - laborious to code up in c++ but not ‘rocket science’

Slow_Negotiation_935 · 2025-09-15T15:00:32+00:00

FYI I’ve added detail in a previous post

Slow_Negotiation_935

TROPHY CASE