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Pixar in a Box
Course: Pixar in a Box > Unit 3
Lesson 1: Modeling with subdivision surfaces- Start here!
- Introduction to subdivision surfaces
- Interativo: divisão e média/Interactivo: división y promedia
- 2. Subdivide operation
- Subdivision
- 3. Subdividing your own designs
- Interativo: crie sua própria forma
- 4. Subdivision in 3D
- Interativo: subdivisão em 3D/Interactivo: subdivisión en 3D
- Subdivision in 3D
- Getting to know Alonso Martinez
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2. Subdivide operation
Now we can combine split and average into a single operation called subdivide.
Click here to review midpoints.
Click here to go to the Environment Modeling lesson.
Click here to review midpoints.
Click here to go to the Environment Modeling lesson.
Want to join the conversation?
- So it's almost like making a circle? or just making 4 parabolas?(20 votes)
- It's making four parabolic arcs. They form a smooth shape, but it's not a circle.(11 votes)
- Can you use this stuff to make games?(7 votes)
- Absolutely, you can use it to make more realistic looking characters.(9 votes)
- Why was the playlist rearranged? Alonso makes references to the "previously learned" material from Environment Modeling but now Environment is four topics after Characters.(5 votes)
- Sorry about that, the topics can be done in any order and we've tried to make it easy to jump around.(7 votes)
- this is getting way more easier to understand thanks for your help everyone of you cool khan guys.(6 votes)
- Which computer apps can I use for subdivision?(3 votes)
- So is this the most efficient type of drawing shapes or are there more?(3 votes)
- Well you can extrude vertex's and adjust, but that is much harder in many cases.(2 votes)
- Can you guys tell me what is the meaning of intuitive?😁(2 votes)
- intuitive means: using or based on what one feels to be true even without conscious reasoning; instinctive.
"I had an intuitive conviction that there was something unsound in him"(2 votes)
- why can't you make your character on kahn acedomy like see it(2 votes)
- Khan academy makes their own animation then voiceovers their explanation to give you an idea of how to do you're own.(2 votes)
- how do u save your videos(2 votes)
- its like making a circle(2 votes)
Video transcript
- One of the cool things about
splitting and averaging is that it's pretty easy to program. So, you just need to find the midpoint, which is just averaging coordinates. This makes it pretty easy for the people that write our software to create intuitive tools for artists, like myself, to create characters. Kinda like you used on the smiley face. In this next version of the interactive, we've replaced the split
and average buttons with a single button, called "Subdivide". Clicking it simply does
split followed by average. Focus your attention on
this region of the curve. Now, let's extend these lines until they hit the control polygon. Hmm. Doesn't this look, suspiciously, like the string art construction we saw in the parabolic arcs? Now, watch what happens
when I subdivide again. The string art pattern
continues to emerge. Now, every time you hit subdivide, you get twice as many strings. And that means that the curve that we're creating is a
parabolic arc in this region. And there's another
parabolic arc over here and over here and over here. But, magically, these
four arcs are smoothly blending from one to another. I think that's just so cool. As someone interested in mathematics, this is the kind of surprise
that I find exciting. This next exercise will test how well you understand this concept.