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Pancho

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About Pancho

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    Tom
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    Germany

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  1. Open world roads

    Sounds like a good project for getting into lidar hardware. For this purpose a rotating one might be nice, but one which could be carried around is probably even better.
  2. Open world roads

    Ah, don'T build one. THe ones I've seen are more a gadget, than a lidar scanner. The two from DIJ are between 800-1500€ I think. ONe seems to be a single scanner, the other a triple one. Both are not rotating, but scanning in one direction. Wonder whether the speed of a car at 30-50km/h would still deliver nice results. Scanning distance is something like 40m max as far as I can remember.
  3. Open world roads

    Wow! I'll check the wip! Did you capture the lidar yourself? Need to capture something like a long road. Thought to mount a lidar like the one from DIJ on a bike, but not sure whether this will work. Tried photogrammetry. While Nuke is able to retrieve a pass the point clouds are a mistery. Agisoft on the other hand comes up with great points clouds, but looses the spatial sequence, so instead of one long passage, you get a wired mix of small chunks. Still looking for a solution. Something which works as Nuke could/should work.
  4. Open world roads

    I just used UE4 as a render engine for some animations. All this VAT to export animations is a pain. Houdini engine should take care of this. The videos about the LABS tool pretend that it is simple, but it's like "Pitfall", the C64 game. I guess I don't need to get into details. The nurse was pretty busy whiping away the foam from my mouth for hours, days, weeks? : ) The pain with every new package is not doing some stuff, but to get the philosophy of how things are done. In H I don't care about a few 1.000k, but in Unreal? So just the get info whether it's bessed to export spline, geo or whatever is difficult to get. That's almost as terrible as converting a receiving high res DEM models! : ) Cheers!
  5. Open world roads

    Thanks for the reply. Funnily I just started to look at culling after it was menitonend in the "From ant to space" (or something) video from Unreal. THe guy presented it in combination with world space displacement for flowers. The further away from the camera, the lower the instances would be placed. If they are beneath ground some form of culling lets them disappear. I guess cutting the street into pieces would be the way to go. Probably the heightfield could still carry the color information of the street even if the geo isn't there anymore. In combination with LODs this could work nicely. Will give it a try asap! Are you familiar with UE4?
  6. Open world roads

    Ha,ha! THanks for the tip!!! : ) Watched it already. But I was a bit disappointed when he just instanced the rails tracks with visible gaps. : / Hoped that I would find the secret in this video. Unfortunately I can't find anything on the web so far covering this topic in regards to what splits my brain. I just can't tell which way I should bring in the geo so that it suits the needs of a game engine. Probably I could just generate the road mesh in Houdini which would be a no brainer. But since the street is long, how would I prepare the geo in order to just load parts visible to the camera or reduce it's LOD in the distance or do something else to it that it is UE4 "safe"? Bringing in a heightfield is one thing, bringing in the instances another, but the roads... ???
  7. Open world roads

    Hi there, trying to bend my head around this for a few days now. Since I'm creating my terrain and roads (using pathfinding and manual approaches) in Houdini, I wonder how to create/import these roads inside UE4. I've seen a lot the videos on road creation inside UE4 using splines. The basic seems to be to pathinstance and pathdeform small chunks of road. Very memory friendly. But in all cases the splines were created inside UE4. With an open world which might change during the developments every day, this seems to be a very destructive workflow. Since I already created my road inside of Houdini (as a nurbs curve, primitive curve or as geometry), what do I do with it to finally create it inside of UE4? Importing the geo seems like a no go, since in an open world this mesh might be really heavy, although it would be easy to create the geo inside Houdini giving me full control over most parameters. Would UE4 slice this mesh in a memory friendly way, so that it can handle it? I couldn't find anything yet on importing spline components via an assett, to create the streets with a blueprint. I imaginge since UE4 uses instances for these roads which are bend along the spline, that this might be a good approach, but how would it work practically? Most of the videos covering this subject show the creation of a small racetracks or something similar. A no brainer in terms of performance, since the geo can be easily imported. But in an openworld with 20km of road this seems to be not the right option, or? If you have any experience on this subject, I'd be glad if you could share it. Cheers Tom
  8. Digital Assets and the Tab menu

    Interactive -> Shelf Tools
  9. Digital Assets and the Tab menu

    In H18 there's no Tab called tools anymore. What has changed and how do I accomplish it now?
  10. Instance rotations in asset

    That would indeed be a game changer. So far I thought it's not used in this way, but rather for deforming geo, like a flag in the wind for example. Will need to look into this option closer. Thanks!!
  11. Instance rotations in asset

    Thanks for sharing this idea. Came across this method, too. I just hope that there's a way to just rotate the instances. Otherwise I would need to convert all instances to geo which creates a lot of vertices. Managed to create a blueprint which turns my asset. Quite easy. What's missing now is to get to the instance geo and do this per cogwheel. If this is possible, than I would at least find a way to come up with several solutions for my work.
  12. Starting to get a depression. What seemed to be the most simple task turns into a headache. I instanced cogwheels in my asset which turn nicely. Different sizes, different rpms depending on their teeth/diameter. Animates brilliantly in Houdini. Since the cogwheels are instances I thought they would turn nicely in UE4, too. NOPE. I guess it's about that the asset just cooks once and then is "stached" by UE4. No more "Hey, do you have updates concerning the rotation of your cogwheels? I'd like to spin them. If you want to." questions between the engine and unreal. It's 2020 and turning objects inside a 3d app isn't anymore state of the art, but I guess unreal makes an exception. How can I spin a lot of cogwheels in UE4? Just by setting an individually angle on each instance. No collisions or so required. Everything gets calculated by time and diameter. That's all. If a blueprint is the only way to go, how then do I access the instances in my asset and update their rotations or even positions? Technically? Is there something like "get all instances by name" function which creates an array I could loop over and update values? Looked up the web for half a day without success. If you have an idea how to do that, I'd be really happy to hear about it. Cheers Tom
  13. (novice) $JOB vs $HIP

    But that assumes that it's just in the first subfolder of "scenes". In larger projects there might be several subfolders and the way of dealing with it by going up one level won't lead to the correct directory. I haven't fully understand how to set up the $JOB variable yet. People seem to set it up in their houdini.env file, which doesn't make any sense to me since this is global, right? I switch projects many times a day, so this needs to be setup somewhere in the scene itself. So, how and where is it done? Cheers Tom
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