Prepare for your exams
Get points
Guidelines and tips
Sell on Docsity
Docsity AI

Prepare for your exams

Study with the several resources on Docsity

Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips

Sell on Docsity

Docsity AI

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search for your university

Find the specific documents for your university's exams

Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents

20 Points

For each uploaded document

Answer questions

5 Points

For each given answer (max 1 per day)

All the ways to get free points

Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

Keyframing and Rotation Interpolation in Animation, Study notes of Fundamentals of Design

Georgia Institute of Technology - Main Campus Fundamentals of Design

Keyframing is a technique in animation that saves time for the animator by allowing explicit thought about timing and the use of intermediary frames. The differences between keyframing and straight-ahead animation, the role of inbetweeners and inkers, and the challenges of interpolating rotations using matrices and euler angles. It also introduces alternative methods like axis-angle representation and quaternions.

Typology: Study notes

Pre 2010

Uploaded on 08/05/2009

koofers-user-m29 🇺🇸

10 documents

1 / 7

This page cannot be seen from the preview

Don't miss anything!

Keyframing

based on hand animation techniques

save time for the animator

force explicit thought about timing

[vs. straightahead animation]

animator −> inbetweener −> inker

Snow White:

$100/week −> $35/week −> $25/week

simple interpolation !=

intelligence/judgment of inbetweener

Discover Study notes of Fundamentals of Design Georgia Institute of Technology - Main Campus

Partial preview of the text

Download Keyframing and Rotation Interpolation in Animation and more Study notes Fundamentals of Design in PDF only on Docsity!

Keyframingbased on hand animation techniquessave time for the animatorforce explicit thought about timing

animator −> inbetweener −> inkerSnow White:$100/week −> $35/week −> $25/week[vs. straightahead animation] simple interpolation !=intelligence/judgment of inbetweener

Keyframing ugly motion (as Alan showed!)F/m = a = d

2 x(t)/dt

2 => C

2 continuous

x(t) position of ballSplines for interpolation

Rotation Interpolation3x3 rigid body rotation matrix hasrows and columns that are orthonormal(unit length and perpendicular)

Rotx(90) −>Rotx(−90)point in the middle is1 0 0 00 0 0 00 0 0 00 0 0 1

simple interpolation won’tpreserve that property: objectwon’t rotate rigidly

Rotation−−Euler Anglesfixed order rotation aboutx,y,z = (17,42,89)if axes become aligned thenrepresentation breaks down: gimbal lockx,y,z = (0,90,0)

incremental changes in either x or zhave the same effect on the system.A degree of freedom has been "lost."

z x y Rotx(0)

z yx Roty(90)

z yx Rotz(0) x,y,z = (90,90−

∆,90)

will allow rotationby^ ∆^

about vertical axis.

angle and axis (x,y,z)[sin(

θ/2)(x,y,z), cos(

θ/2)]