How do you even get to this point? I see how each of the controlled factors affect the movement, but is this all backed up with computer coding. If so, what does that look like? What is the "math" involved to get us to this point?

You can find the code for this program here: https://www.khanacademy.org/computer-programming/rigid-body-system/5042216571568128 The math is relatively easy and covered in the later lessons.

why is gravity required in this activity?

if you move the head around with zero gravity you will realize that the hair don't come down. The more you increase gravity the straighter her hair gets.

So if 0 gravity is equal 100% upwards that means that 15 gravity is is stll going to have gravity but not that much right?

*0% gravity doesn't mean 100% upwards.* It means that an object will remain in its position unless force is applied unlike when gravity is there, it is pulled down even when there is no force applied.

Main content

Rigid body system

Google Classroom

Simulating hair with rigid line segments.

Use the controls to change the number of hairs as well as the number and length of segments in each hair. Click and drag to the head to move it.

See what effects you can come up with, then move on when you're happy.

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gscordato
Posted 6 years ago. Direct link to gscordato's post “How do you even get to th...”
How do you even get to this point? I see how each of the controlled factors affect the movement, but is this all backed up with computer coding. If so, what does that look like? What is the "math" involved to get us to this point?
Button navigates to signup pageComment on gscordato's post “How do you even get to th...”
(97 votes)
Answer
- Peter Collingridge
  Posted 6 years ago. Direct link to Peter Collingridge's post “You can find the code for...”
  You can find the code for this program here: https://www.khanacademy.org/computer-programming/rigid-body-system/5042216571568128
  
  The math is relatively easy and covered in the later lessons.
  Comment on Peter Collingridge's post “You can find the code for...”
  (71 votes)
Arka Roy
Posted 6 years ago. Direct link to Arka Roy's post “why is gravity required i...”
why is gravity required in this activity?
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(20 votes)
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- Bani
  Posted 4 years ago. Direct link to Bani's post “if you move the head arou...”
  if you move the head around with zero gravity you will realize that the hair don't come down. The more you increase gravity the straighter her hair gets.
  Comment on Bani's post “if you move the head arou...”
  (19 votes)
Chris Nolan.ca
Posted 6 years ago. Direct link to Chris Nolan.ca's post “Would each segment react ...”
Would each segment react like a pendulum? Multi-jointed pendulums are chaotic afaik. How do you accommodate that?
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(8 votes)
Answer
- R.E.G.A.L.
  Posted 2 days ago. Direct link to R.E.G.A.L.'s post “Adjust the amount of segm...”
  Adjust the amount of segments and add more gravity.
  - I think
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  (1 vote)
RIHANNA
Posted 4 years ago. Direct link to RIHANNA's post “So if 0 gravity is equal ...”
So if 0 gravity is equal 100% upwards that means that 15 gravity is is stll going to have gravity but not that much right?
Button navigates to signup pageButton navigates to signup page
(8 votes)
Answer
- Trishanth
  Posted 3 years ago. Direct link to Trishanth's post “*0% gravity doesn't mean ...”
  *0% gravity doesn't mean 100% upwards.* It means that an object will remain in its position unless force is applied unlike when gravity is there, it is pulled down even when there is no force applied.
  Button navigates to signup page
  (8 votes)
Mohan
Posted 6 years ago. Direct link to Mohan's post “How can the "hair" in the...”
How can the "hair" in the simulation come back into a straight line, and joins together like a magnet? When you bring the head -attached to the hair- around, why don't the hairs separate, so it looks like a real person's?
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(9 votes)
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jaydend04
Posted 3 years ago. Direct link to jaydend04's post “how do you do the hair li...”
how do you do the hair like the animation
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(5 votes)
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FantasyIsland28
Posted 3 years ago. Direct link to FantasyIsland28's post “setting it to max is hila...”
setting it to max is hilarious!
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(6 votes)
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Albin Zekaj
Posted 4 years ago. Direct link to Albin Zekaj's post “Hairs:200 Segments:10 Seg...”
Hairs:200
Segments:10
Segment length:17
Gravity:12
This isn't a bad idea.
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(5 votes)
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Milk
Posted 4 years ago. Direct link to Milk's post “if you put everything to ...”
if you put everything to the lowest then starting from hairs put all settings to full it looks like what i call "demon hair"
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(5 votes)
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Tee Tee
Posted 2 years ago. Direct link to Tee Tee's post “can i add color to the ...”
can i add color to the hair i made
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(4 votes)
Answer

Pixar in a Box

Course: Pixar in a Box > Unit 4

Rigid body system

Simulating hair with rigid line segments.

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