hobezwe / nurbs.jl

This package provides functionality to define and evaluate B-spline and NURBS (non-uniform rational B-spline) basis functions, their derivatives, as well as curves and surfaces based on both considered basis functions.

Introduction

This package provides functionality to define and evaluate B-spline, Curry-Schoenberg, and NURBS (non-uniform rational B-spline) basis functions, their derivatives, as well as curves and surfaces based on B-spline and NURBS basis functions.

The following aspects are implemented (✓) and planned (⌛):

B-spline, Curry-Schoenberg & NURBS evaluation

• ✓ Basis & derivatives
• ✓ Curves & derivatives
• ✓ Surfaces & derivatives

Fundamental operations

• ✓ File I/O (.step)
• ✓ Knot manipulation
  • knot insertion / refinement
  • knot removal
  • splitting of curves and surfaces
• ✓ Transformation of curves and surfaces
  • scaling
  • translating
  • rotating
  • mirroring
• ⌛ Degree elevation / reduction
• ⌛ Construction of common geometries

Citation

Please cite this package following the information on Zenodo.

Documentation

• Documentation for the latest stable version.
• Documentation for the development version.

nurbs.jl's Issues

TagBot trigger issue

This issue is used to trigger TagBot; feel free to unsubscribe.

If you haven't already, you should update your TagBot.yml to include issue comment triggers.
Please see this post on Discourse for instructions and more details.

If you'd like for me to do this for you, comment TagBot fix on this issue.
I'll open a PR within a few hours, please be patient!

plotSurface(SNurbs, controlPoints=controlPoints) is not working for a different number of control points in the two parametric directions

Command plotSurface with option controlPoints (e.g. plotSurface(SNurbs, controlPoints=controlPoints)) is not working for a different number of control points in the two parametric directions.

In file "src/utils/plotting.jl" please replace line 130 with the following:

maxmax, t2 = plotControlPoints(controlPoints[ind,:])

and line 136 with:

maxmax2, t2 = plotControlPoints(controlPoints[:,ind])

Logo cut off

Hi,

I noticed the current (and older) loge have most of the N cut off. I was thinking is it intentional, some stylistic chose I don't understand?

It stands for:
"NURBS (non-uniform rational B-spline) basis", and maybe I'm reading too much into it, but the N stands for non[-uniform], so without it would be uniform rational B-spline basis, if that even makes sense. Is it to imply that somehow, that or both can be done?