Hi Scott, Thanks for your answer.
You are right, the crease angle just adjust the normals to smooths a little the look of the object when lit. Yes, I have been looking for Splines, B-Splines, NURBS and Bezier in J3D and I have not been able to find. I was wondering if they were implemented. I just found some behaviors that can animate objects in splines trajectories. So I hoped that there was some kind of already made spline method implemented in J3D for objects. I checked the code that David Yazel sent and I see a BezierSolver class. Where can I find that class? Is that in com.xith... package? Where can I get that package? Thanks a lot, Paula Sanchez [EMAIL PROTECTED] The fear of God is the beginning of knowledge. St. Ivo On Wed, 24 Apr 2002, Scott wrote: > Date: Wed, 24 Apr 2002 19:44:33 -0500 > From: Scott <[EMAIL PROTECTED]> > Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED] > Subject: Re: [JAVA3D] Help smoothing polygon's edges > > Smoothing the normals won't eliminate jaggies and sharp edges, it will only > smooth out your lighting. > > You might want to look at creating some splines or bezier curves, and throw > a few more polygons into the mix. > > But to answer your question directly, a quick and dirty method of normal > smoothing (when you have face normals but not vertex normals) is: > > (your elevation grid from a Plan view) > P1 P2 > > P3 > > Normal of Point1 is: > > n.x=(P1.y-P2.y)/2.0; > n.y=1.0; > n.z=(P1.y-P3.y)/2.0; > n.normalize(); > > > That has drawbacks (the furthest right row of vertex's have to be handled > differently), and overall it's not that accurate, but can certainly smooth > out your mesh. If anyone has better methods, I'd love to hear them > > Scott > > ----- Original Message ----- > From: "Paula Sanchez" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, April 24, 2002 6:27 PM > Subject: [JAVA3D] Help smoothing polygon's edges > > > > Hello Everyone, > > > > I am trying to create a surface with variations in elevation and layers of > > soil. I would like to eliminate the sharp edges of the elevations and > > make them appear smoother. Does anybody have any suggestions on how to do > > this in Java 3D. > > > > I have tried the crease angle, but I have not had any luck with it. If > > you could send me a small sample of code, I will greatly appreciate it. > > > > Code changing the crease angle: > > NormalGenerator method setCreaseAngle((float) Math.toRadians(100) > > > > Something desireable could be what it is in the webpage: > > http://grunwald.ifas.ufl.edu/Projects/VR/VRML_files/vrml.html > > > > Thanks a lot, > > > > Paula. > > [EMAIL PROTECTED] > > > > Paula Sanchez > > [EMAIL PROTECTED] > > > > The fear of God is the beginning of knowledge. St. Ivo > > > > > =========================================================================== > > To unsubscribe, send email to [EMAIL PROTECTED] and include in the > body > > of the message "signoff JAVA3D-INTEREST". For general help, send email to > > [EMAIL PROTECTED] and include in the body of the message "help". > > =========================================================================== > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body > of the message "signoff JAVA3D-INTEREST". For general help, send email to > [EMAIL PROTECTED] and include in the body of the message "help". > =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
