I taught Calculus to kids who'd rather be at frat parties, decades ago. I'd tell them that the corner is continuous, just not differentiable! But the point still was clear. (I'd tell them, continuous means you can draw the curve without lifting the pencil---good enough for freshman calc.)
"You have a cylinder intersecting the edge of a cube. How do you handle this?" "Oh, easy. You're doing it wrong. Pick an easier problem to solve." Hrm.
If you make sure that the edges of the cylinder are perfectly aligned with the cube's one, it will work as expected. Just make sure that you merge the vertices where they meet. :-)
The maths example for "continuous" vs "discontinuous" is not good. There are infinitely many functions/curves with sudden direction changes (including triangular sines) that **are** continuous. Continuous functions/curves can be traced without requiring to "hold the pencil up" while drawing, whatever the direction changes or how steep they are. Discontinuous functions/curves can't be traced without holding the pencil up at some point, even if the rest of the curve has no direction/slope change at all (when for instance f(x) is not defined for certain values of x) Otherwise, great video, as always! 👍
@@MonsterJuiced subdivision of the cube is not needed. I do recommend to rotate the cube 45° in the x Axis, so you can project using the front view(ortogonal view)
Josh is actually 100% right when he says it's not continuous. C^0 continuous (which is what the comments are talking about) does not mean the curve is C^k continuous. More specifically, that curve is C^0 continuous (the two ends are connected) and C^1 continuous (the speed is the same at the point of connection) but it's NOT C^2 continuous (double derivative). Therefore it's not C^k continuous, therefore saying it's discontinuous is perfectly fine.
This is an easy solution for simple shapes, but when working in far more complicated scenes like grass and trees, it's nearly impossible to put this into effect.
Continuity in maths has nothing to do with curve smoothness man, but rather if things are connected and there are no gaps. A hacksaw like curve is continuous, sheesh
Just joined your couse and can't wait to get started! Question: What if I actually wanted that sharp cube fused with the cylinder like that? My instinct tells me in that case, I'd just have to manually run loopcuts and topologize around the join area. but is there a fast and more non-destructive way to get that result?
In that case you may be better off joining them together instead, but the only downside of that would be the fact that you would not be able to get that bevel between the the two shapes as easily.
Thats why I am using "Plasticity" (CAD Modeling of Artist), blender works on polygons and it has limitations to model complex things. But Plasticity is Paid but very useful to make anything without worrying about shading issues.
This is disgusting advice. You are essentially saying, here's how to NOT fix the problem that occurs on sharp edges. Instead, COMPLETELY alter the shape and geometry of your model so that you will have a nice edge flow. But the purpose, vert count, shape, aesthetics and everything else about the model is now completely thrown out into the trash.
Some workflows have ngons. It depends on what your goal is. One of the hardest things for me to do was get out of thinking everything has to be Sub-D with qauds.
@@SlyNine Actually Not, N-gons are not fine and the only workflow that has n-gones are the ones created by this kind of so called "Blender teachers" who's ultimate goal is to sell their nonsense course which results in nothing but creating random shapes of no use.
Horrible advise for beginners or anyone. i wouldn't follow this advise. This is more of a tip for som specific situations and should be presented as such, and not be presented as an everywhere rule for booleans and if you don't do it you are doing it wrong.
Jokes on you. I don't even know how to make booleans so I win
I taught Calculus to kids who'd rather be at frat parties, decades ago. I'd tell them that the corner is continuous, just not differentiable! But the point still was clear. (I'd tell them, continuous means you can draw the curve without lifting the pencil---good enough for freshman calc.)
"You have a cylinder intersecting the edge of a cube. How do you handle this?" "Oh, easy. You're doing it wrong. Pick an easier problem to solve."
Hrm.
what are you supposed to do if the cube needs to have sharp edges
Just add another cube after the bevel is done
Theoretically speaking, nothing truly has a sharp edge. At least in the manufacturing world due to stress concentrations. Small bevels ok?
@@bentontramell manufacturing is not game development
Use MeshMachin3's "Offset Cut" with "resample" and smooth disabled.
@@LordoftheFleas at $40 there is no fucking way that is going into stock blender anymore
If you make sure that the edges of the cylinder are perfectly aligned with the cube's one, it will work as expected. Just make sure that you merge the vertices where they meet. :-)
Question: What If I don't want to bevel that edge? There's another method?
use MeshMachin3's "Offset Cut". If you deselect "Resample" and "Smooth" it actually works, contrary to what is shown in the video ;)
He works only with bevel edges🤣🤣🤣
The maths example for "continuous" vs "discontinuous" is not good. There are infinitely many functions/curves with sudden direction changes (including triangular sines) that **are** continuous. Continuous functions/curves can be traced without requiring to "hold the pencil up" while drawing, whatever the direction changes or how steep they are. Discontinuous functions/curves can't be traced without holding the pencil up at some point, even if the rest of the curve has no direction/slope change at all (when for instance f(x) is not defined for certain values of x)
Otherwise, great video, as always! 👍
...Yeah, okay... what if i need the sharp edge tho...
This is not a solution, its more of a tradeoff if you are willing to change the design.
Use MeshMachin3's "Offset Cut" with "resample" and smooth disabled.
YOU ARE MAKING TUTORIALS WRONG
you suggest drastically changing object's shape making your advice essentially useless.
What if I need that sharp corner though?
I'd think you would be better off subdividing the cube and the. using a circle to knife project. let me test it first.
just tested it and it works! I should make a video about it.
@dzibanart8521 good solution man nice one :)
@@MonsterJuiced subdivision of the cube is not needed. I do recommend to rotate the cube 45° in the x Axis, so you can project using the front view(ortogonal view)
Use MeshMachin3's "Offset Cut" with "resample" and smooth disabled.
What??? And what should I do if I want to have a cube like a cube from all sides, and not round the cube ??
Use MeshMachin3's "Offset Cut" with "resample" and smooth disabled.
Josh is actually 100% right when he says it's not continuous. C^0 continuous (which is what the comments are talking about) does not mean the curve is C^k continuous. More specifically, that curve is C^0 continuous (the two ends are connected) and C^1 continuous (the speed is the same at the point of connection) but it's NOT C^2 continuous (double derivative). Therefore it's not C^k continuous, therefore saying it's discontinuous is perfectly fine.
This is an easy solution for simple shapes, but when working in far more complicated scenes like grass and trees, it's nearly impossible to put this into effect.
Continuity in maths has nothing to do with curve smoothness man, but rather if things are connected and there are no gaps. A hacksaw like curve is continuous, sheesh
What if I wanted on sharp edge of cube. How do I do that.
WTF? what if you want to keep a sharp angle????
It only works with a clean cube without subdiv and a cylinder tilted at a 45 degree angle.
We're not using it wrong, Blender's doing it wrong.
Great solution- very fundamental
yes I totally agree with you . THANK YOU JOSH
Always great tips here! Thanks!
Thanks
Just joined your couse and can't wait to get started! Question:
What if I actually wanted that sharp cube fused with the cylinder like that? My instinct tells me in that case, I'd just have to manually run loopcuts and topologize around the join area. but is there a fast and more non-destructive way to get that result?
In that case you may be better off joining them together instead, but the only downside of that would be the fact that you would not be able to get that bevel between the the two shapes as easily.
Use MeshMachin3's "Offset Cut" with "resample" and smooth disabled.
Thats why I am using "Plasticity" (CAD Modeling of Artist), blender works on polygons and it has limitations to model complex things. But Plasticity is Paid but very useful to make anything without worrying about shading issues.
usefull as hell, thanks a lot josh , we learn something new all days
how to make the vertexes so big ?
Go to edit -> preferences -> themes, and near the bottom there is an option to increase vertex size.
Blender videos are starting to have me believe that most design choices are just concession.
Shift+Boolean Unit only with adjustable bevel straight away. Where to find one without?😂
Excellent information - thx!
This is disgusting advice.
You are essentially saying, here's how to NOT fix the problem that occurs on sharp edges. Instead, COMPLETELY alter the shape and geometry of your model so that you will have a nice edge flow.
But the purpose, vert count, shape, aesthetics and everything else about the model is now completely thrown out into the trash.
Thank you very much
This is very cool tutorial. Quick, accurate, simple and mindblowing.
no im not, dont tell me what to do
Good vid as always. :)
Thanks 4 the video.
Such a simple thing but I can see how it is overlooked ......... guilty.
Cheers
MR H
Very useful info, thanks Josh.
maybe you can explain us what's going on behind the scenes of offset cut like you did with inset boolean
so your fix is, "you cant boolean a cube"...
...good to know, about you !
The slow pace of him talking makes me wanna leave constantly, but its too interesting
Nowadays I watch most youtube at 2x speed. It took me about a week of ramping up until normal speed youtube sounds sssslllloooowww as crap now. :-)
The cuttlefish is just tooo dericious
Sooooo - break your cube. Got it.
The topology is still full of ngons though…
Some workflows have ngons. It depends on what your goal is. One of the hardest things for me to do was get out of thinking everything has to be Sub-D with qauds.
@@SlyNine Actually Not, N-gons are not fine and the only workflow that has n-gones are the ones created by this kind of so called "Blender teachers" who's ultimate goal is to sell their nonsense course which results in nothing but creating random shapes of no use.
Horrible advise for beginners or anyone. i wouldn't follow this advise. This is more of a tip for som specific situations and should be presented as such, and not be presented as an everywhere rule for booleans and if you don't do it you are doing it wrong.
All the functions you showed here are continuous functions. What I think you were getting at is a function that that a discontinuous first derivative!
This could have been a 2 minute video, lol. Good info tho.
That's not what continuous and discontinuous functions are ☝️🤓. Regardless, it was really helpful
love u bro