```> Hi, > > I'm looking for information on realtime deformation algorithims. > What I'd like to do is have some 3-D object like a sphere composed > of polygonal faces and be able to interactively prod the sphere > and see it deform proportionally to the applied force. > > Has anyone out there done anything similiar to this, or know of > any good articles that might address this problem ? I'd even be > intested in 2-D versions of this problem (i.e. deformation of a > series of connected line segments). Please respond by internet > mail if possible and I'll summarize the responses if there is enough > interest. > > > Steve Berger (sb@onripx.neuro.emory.edu) I know a simple algorythm, i already use to perform 3D objects transformations : Use two array ( or equivalent) : - the first one contains the source point ( in 2D or in 3D ) - named S - - the second one contains the destination coordinates - named D - Then use one ( or two or tree coef ) - named co1 co2 co3 ( from 0 to .. 1 ) - and display all points like that : x = S.x[ii] * co1 + ( D.x[ii] * ( 1 - co1 ); y = S.y[ii] * co2 + ( D.y[ii] * ( 1 - co2 ); z = S.z ..... co3 ....... z ........... co3 And then increment co1, co2, co3 ( step .001 ) for example. It's not very efficient but it's a great idea to start ... No ? Bye ... all your comments will be welcome -- ____________________________________________________________________________ JOLY Thomas University of PARIS VII ( Jussieu ) Licence Informatique mail : joly@amertume.ufr-info-p7.ibp.fr ____________________________________________________________________________ ``` Discuss this article in the forums Date this article was posted to GameDev.net: 7/16/1999 (Note that this date does not necessarily correspond to the date the article was written) See Also: Miscellaneous © 1999-2011 Gamedev.net. All rights reserved. Terms of Use Privacy Policy Comments? Questions? Feedback? Click here!