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  1. J

    Advanced Question Computing RA/Dec from LOS vector

    Yeah, it looks like RA is counted in opposite direction. And there is then of-course the Earth Mean Equator and the current actual pole from oapiGetPlanetRotationMatrix() which might explain the difference in Dec. In which case the pole should be replaced by earth mean pole, obliquity of...
  2. J

    General Question FROZEN text with Ctrl+Shift+F

    It's a debug feature to allow to take the camera behind the scene to see how planetary tiles are rendered. Might be good idea to disable in "Release" build.
  3. J

    Advanced Question Computing RA/Dec from LOS vector

    I haven't run any tests but this is what I came up quickly. Should precession be included ? double z = dotp(apparentLOS, pole); double Dec = asin(z); Vector Aries = _V(1,0,0) Vector X = crossp(pole, Aries).unit(); Vector horiz = apparentLOS - pole* dotp(apparentLOS, pole); double hlen =...
  4. J

    Project D3D9 to Vulkan

    The vulkan client that I am working on is about 50% complete. There's lot of background work done such as DDS de-compressor and compressor, Image loaders/savers, mesh renderer, dynamic object/buffer managers (not build-in feature in Vulkan), Orbiter API 2D surface interface and plenty of vulkan...
  5. J

    Problem D3D9 not working with orbiter 2024

    Sorry, I can't verify a bug. The error code indicates that D3D9Client.dll doesn't found. Which is kinda odd. I don't recall reports of this kind of problem before. Could this be some kind of protection issue "access denied" If you install Orbiter under "Program Files" folder then that's a way...
  6. J

    Updates Artemis II

    The crew is preparing to get some sleep. I'll appreciate a lot if some-one can sleep under those conditions. The excitement and stress would mess up my head and I would be getting any sleep. But I guess that these guys are so experienced that this mission is not much more than a busy day on ISS.
  7. J

    Updates Artemis II

    That was a great launch, mankind is once more on it's way to the Moon. Hopefully we will see Lunar landing with-in the next two years. Would like to see the TLI but I'll have to get back to bed. Go Artemis.
  8. J

    Updates Artemis II

    Had to wake up middle of night for watching the launch, looks like we are still go for launch...
  9. J

    Problem Unable to turn off monitor when not playing

    That's a potential fire hazard. Maybe just a black image on a full-screen on an image viewer.
  10. J

    Problem Unable to turn off monitor when not playing

    This is exactly how it is. There is a work-a-round: Press Ctrl+Alt+Delete to cause the window to pop-up on purpose. Click "Ok" to close the window and then shutdown your display. Orbiter should keep running without graphics. When you are ready to continue. Turn on your display and shutdown...
  11. J

    So many addons that do not work

    That sounds like a good idea. It could be easier for everybody if add-on specific files are located in add-on folder. That is also great idea, it's been on my mind long time. There's no dependency management of any kind right now and it must improve. Maybe the dependencies could be checked...
  12. J

    Problems with building orbiter because of irrKlang

    Could we simply contact them and ask for a license assuming, that it's free, and hopefully something that we could redistribute. At least for a time being until we got an open source replacement ready. Starting to pay for a license that's no go.
  13. J

    So many addons that do not work

    Having a lot of add-ons that do not work and causes a system crashes must be very annoying for users. So, is there something we could do about it ? 1) I suppose we could try to improve debugging and compatibility from orbiter side but it does have it's limits. It would require people with...
  14. J

    Problem Error "base not cataloged" - requesting help

    In Orbiter 2016 D3D9Client doesn't have access to a scenario information such as runway lights configuration etc... So, the client must reload all the configuration files starting from Scenario file to Sol.cfg, Planets and bases. The error is a result of inconsistency between what Orbiter has...
  15. J

    Linux playground

    Nearplane 0.0f will causes a fault. Must be higher than zero and as large as possible. Orbiter uses 0.1f or 1.0f for VC and exterior values varies by camera-vessel, camera-ground distance from 0.1 to 1e3. Farplane is non-critical.
  16. J

    Discussion Orbiter User Requirements and Post-2024 Development

    I have had some science focused plans in the past. When LunarTransferMFD was created I was working on a simple trajectory propagator that could be used for trajectory analysis. Also, I have been thinking about resurrecting my old 25 years dead linux application MathPlanner and building a bridge...
  17. J

    Discussion PR: SDL3 port for cross-platform support

    So, you mean that an add-on would need to change WM_MOUSE events to a corresponding SDL_EVENTS ?
  18. J

    New Release D3D9Client Development

    Wrong, Let's consider airspeed, you have 100 knots which increases to 101 knots. These are "absolute" values but the Orbiter's internal mechanics will update the animations by computing a difference 101 (new) - 100 (old) = 1 and increments the animation state by 1. In other words the vertices...
  19. J

    New Release D3D9Client Development

    Plans been shifting a bit, currently I would say that the next Orbiter (2025, 26) would still release with DX9 (via DX9 to Vulkan wrapper if needed (already supported)) (DX12 wrapper is somewhat buggy) after that there would be a change to native Vulkan graphics API. So, in other words, I...
  20. J

    Discussion Orbiter: Lua 5.4 Upgrade: Community Input

    The build was successful with the vcpkg using vs-generator how ever the ninja approach by following these https://www.orbiter-forum.com/threads/guide-orbiter-development-in-visual-studio-2019.40144/ instructions doesn't work at all, no sign of vcpkg getting enabled or doing any work there and...
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