Boolean | Shatter (Modeling)

this video is going to be covering the boolean tools specifically the shatter operation in Houdini now most of us are probably familiar with the regular boolean functions like Union subtract and intersect but in Houdini we have the shutter operation that allows us to quickly and easily add detail to our geometry when we're modeling so in this heart surface geometry example we have this shape that cuts into the surface here and also this power button as well as this design shape that runs across the midsection of this this mesh here and all of those details were done by using the shatter operation of the boolean tool and we're going to see how we can do that so before we begin I just want to recommend that you set your desktop to modeling and choose the poly modeling option for radio menus so that when you hit the C key you get a bunch of modeling tools at your fingertip and if there's other tools that you use more often then you can certainly create your own custom radio menu and populate it with the tools that you are more commonly using that said I'm going to hit the control B key now to continue and bring back my network editor window I'm going to turn off his ability on this guy and hold the R key and select these two to turn on visibility on them and I hit the W key I can see that this bottom cut geometry is actually that shape that was cutting into the geometry that we saw earlier and if I double click to go inside it's just a curve that I did a bunch of operations on and I turned it into a closed polygon geometry that I appended with a null this out underscore bottom cuts so that I can reference to it when I'm working in the main body geometry table later so you know that you can jump back out and go into the main body and here is my network for this main body surface here this is basically my construction history if you will and so let's do the boolean operation to have this geometry cut into the surface and we can reference it by using the object merge sup so hit top key and type object so like then put it down and then just going to name it and I'm going to hit tab and type boolean and put down my boolean if you're wondering about the shape I just did a custom shape and colored it earlier you can do that later on so now let's grab these two and just drag and drop it into the first input that is going to auto populate the second input so you don't have to manually click and drag it and hold down the Archaea so like the boolean no nothing is happening because we didn't actually reference anything in this object Marge so if we hit the P key it's pointing to nothing which is helpful so let's choose that know that we were talking about earlier that out bottom cut and you can see automatically that it's updated and it's kind of drawn the shape that we want but that's not on the main geometry so please select the boolean we don't actually want the intersect operation we want to get shattered and now if we look at it more closely it's almost like we have this curve on surface from that intersection which are actually the seams that are here but they're not turned on so let's apply a bevel which is going to give us that geometry going in look and see what these seams are doing so I'm going to hit tab and type bevel just put down a poly bevel and set the display flag on it and nothing's happening because first are offset like a bevel amount is set to zero so let's put like a very small number and you can see that Houdini is trying to bevel everything because there's nothing in the group indicating that you know Houdini should double anything else and so now when we go back to boolean we want to enable the a/b seems output which are those quote curved on surfaces that I was talking about and I'm going to just call this bottom cut oops underscore maybe seams and now for the bevel I'm going to choose that seam the those seams that were generated and now if I just increase the offset the bevel amount I can very easily nicely add some detail on that without doing a whole lot of work so I can also go back to the bottom cut and adjust the bevel amount here so that it's a more rounder shape like so and now if I go back to the main body it's updated there and now if I hit the W key to see it shaded some of you may be disturbed by the the shading and we can remedy that by hitting tab key and putting down normal and setting the wing method to face area and I'm going to set my cusp angle to 40 now I'm going to jump back out with the U key and turn off visibility on bottom cut and that's how you can quickly and easily add detail to your geometry by using the boolean shatter operation in Houdini thanks for watching

Channel: Houdini

Views: 4,720

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Id: 2RA903H_b-E

Length: 5min 0sec (300 seconds)

Published: Thu May 04 2017