Houdini - Procedural Modeling Tips! - Finding Bridges
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- Опубліковано 1 жов 2024
- In this video we are going to look at how to procedural generate bridges from your paths and terrains. This is especially useful if you are building large worlds procedurally.
I'm trying to follow this tutorial with my own data. I have multiple curves, being imported from real world data, and a heightfield from a real terrain model.
I've managed to isolate the curves I will need bridges on by doing some intersection analysis on river curves, so I can deal with a single curve at a time in a foreach loop. However, if I start to replicate your node pattern here, I get absolutely nowhere near the values you get for the slope. All of mine are the same value, 90.0008, except one (seemingly) random point in the middle of the curve which is 0. Without being able to identify the slope angles pretty much everything else becomes irrelevant and I'm stuck.
Do you have any ideas what I could try to pinpoint what my issue is? I'm guessing it's related to the N set up, but without knowing what that is and why it's important I don't know how I set it/broke it in the first place.
Appreciate any help you could give on this @Indie-Pixel
wow wish you have created a full length video :)
Doing god's work on this channel, keep em coming!
Wow, thank you so much, this looks amazing. Can't wait to try it.
Hi, I just wanna say this tutorial is awesome,
thanks for sharing your knowledge with us!
btw. is there a petreon or memberd only post or any other paid link for a full length course for this?
just found this channel gold mine!
Newbie question; I see your heightfield stays visible when you template it. I only get a bounding plane when I template my heightfield. I've had a look in Display Options, googled.. Can't figure that one ut. 🤯
No prob...the template flag has two modes to it. To fully draw the geo hold the ctrl key then click the template flag on the node and itll show the complete geometry.
@@IndiePixel3D Now that you mention it I see there's a tooltip if I just wait long enough for it to appear. 🤦🏻♂😂 Thanks for the swift reply!
Do you post more Houdini related stuff on your Patreon these days? I just noticed you have one and am eager to learn more!
Thanks for all your tutorials. Would be great to see more. Especially on the road intersections.
I agree. Intersections (with a custom profile) is something I still lack to figure out on my own.
I can't get a red and green (or any other colour) on my "find_height" attribute wrangle node - I can set to either white or black, but if just will not get any other colours!
:/ You blurred past the part I really wanted to see 18:06, My PolyEx and Bool looks nothing like your example. I really liked this tutorial though, I was able to follow along perfectly this time right up until the blur. You must have added a Attribute Blur node to Adobe Premiere when it was rendering LOL.
Ah, sorry bout that. I used the polyextrude on the terrain to insert the terrain borders out past the size of the water geo. This way the terrain is a bit larger than the water in x an z. This helps the boolean node make a clean cut. :)
@@IndiePixel3D I really appreciate your tutorials and I realize how much time and effort you pour into them. I figured that you were probably tired and wanted to get it done LoL. I am still learning some of the basics and I still feel like such a noob most of the time. I bought your race course on Udemy last year and have been hooked on your tutorials ever since, you have some of the best content out there, it looks amazing and your VEX code just blows me away. I can't thank you enough, so thank you again. :)
@@IndiePixel3D Is there any chance you're planning to bundle up the tutorials and hip/asset files to put them on gum road like the fire watch tower? I would love that please.
@@magneticanimalism7419 yeah, I can do that for sure. I'll get em uploaded this week.
@@IndiePixel3D That would be so awesome, and appreciated thank you. That would make studying so much easier.
thank u for the amazing tips, will the whole PDG terrain course showing here? I wanna know the details about this case, hope to learn more!
wow ! amazing ! thanks bro !
Great, thanks
That looks sick!
Fantastic. thanks
fantastic stuff dude!
You rock 👏🏽
Im getting very annoyed with these 20 sec youtube ada.... Whats next 2 mim ads?????
that's down to your internet browser your using try a different one. I use brave by the same people that made firefox don't get any ;-)
I typed in the snap_to_terrain VEX but I got "undefined variable with "vector samplepos = set(@P.x, 0, @P.z);" and "@P.y = height;". I am a noob so could you explain what I did wrong?
Can I see your whole vex code?
@@IndiePixel3D
vector samplepos = set(@P.x, 0, @P.z);
int primid = nametoprim(1, "height");
float height = volumesample(1, primid, samplepos);
@P.y - height;
I noticed the "-" instead of "=". But it still has the same error.
The specific error is "Reference to undefined variable: _bound_P"
@@vytasrauckis6703 ahhh...are you using a wrangle node set to run over points?
hay @Indie-Pixel how are you?.. I'm trying to do a train track using real world data for the curve so don't want to affect the original curve other than cutting it or giving it attributes. I just want to get the height difference of the terrain curve that is snapped to the terrain like you do here. and if the curve is below my original curve have an embankment if it is below by more than maximum embankment height place a bridge. the same with tunnels and valleys in the opposite direction. I'm half way there with this tutorial but this is more suited for roads as it was making my tracks go like a roller-coaster. any advice?
Sure thing...so in a wrangle node pump the original curve into input 1 and the snapped curve into input 2 and find the difference in y of the points. Make sure the point numbers are the same between both curves. U thought I had a vid on that. I did one for my patrons recently. We go over tunnels and bridges.
@@IndiePixel3D thank for the quick response. I managed to work that out just before your reply but having trouble somewhere between the attribpromote1 and the split just sending all or nothing as if it's all one color??? the red shows at the find height and the convertline1 is showing loads of primitive numbers.. is there another option for chopping the curve?
@@Ugly_Baby_Gaming hmm...I'd have to see your network to see why. Sounds like the split node is the issue. It's looking for red pin color correct? Might need to promote the point color to prims...that's what I would check first.
@@IndiePixel3D yes red. in the atribpromote original class is point new class is primitive that should of done it? stumped on this one? let you know if i suss it out
@@IndiePixel3D AH ha sorted.. added a group before the convert line and Bingo split now works.. Thanks for all your helpful tutorials.. and after care XXX