animation with linear interpolation problem

Math and Physics Programming

Started by Gammastrahler June 24, 2002 01:46 PM

2 comments, last by Gammastrahler 21 years, 9 months ago

150

Author

June 24, 2002 01:46 PM

hi, i´m using linear interpolation to animate some simple objects. i interpolate between keyframes. the problem is the different speed that results since i have different distances between vertices. how can i achieve constant speed for all? thanks Gammastrahler

Mathematix

259

June 24, 2002 04:10 PM

quote:Original post by Gammastrahler
hi, i´m using linear interpolation to animate some simple objects. i interpolate between keyframes.

the problem is the different speed that results since i have different distances between vertices. how can i achieve constant speed for all?

thanks
Gammastrahler

Remember that interpolation is based on approximations, so that may be what is causing the problem. Have you looked at normalising the algorithm in any way to avoid this?

Regards,
Mathematix.

shurcool

439

June 24, 2002 05:55 PM

well, u physically CAN''T achieve constant speed for all vertices, if you would it''d be like moving the whole object to a different position in space. if you have many keyframes, linar interpolation should work, but since i''ve never done that i can''t tell for sure. post your interpolating code here, and i''ll see if there''s anything wrong.

---
shurcool
my project

Timkin

864

June 24, 2002 10:53 PM

You might want to consider the following technical report:

S Welsh: Shape Preserving Linear Interpolation (SPLINT), School of Computer Science and Software Engineering, Monash University, Melbourne, 2002, 19pp. Technical report 2002/113

Timkin

animation with linear interpolation problem

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