Overview

What ?

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wxNURBS has been designed for two purposes.

• It can be an application to design NURBS (Non-Uniform Rational B-Splines) curves and surfaces. It is currently in its nascent stage. See this page for more features in the days to come.


• It can be a NURBS library, providing an API that could be used by other applications.

Features ?

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• Currently 2-D Bezier curves can be rendered ( Plot control points and view them ).

API Usage

How do I use the API to write code for dealing with Bezier curves ?

/////////////////////
// Created On: Aug 15 2004
//////////////////////

#include 
#include 
#include "nbpoint.h"
#include "nbbezier.h"

void printTVal(NBBezier & bez, double tval);
void processBezierCurves();

int main() {
  processBezierCurves();
  return EXIT_SUCCESS;
}

void processBezierCurves() {
  NBPoint pt1(-5, 0);
  NBPoint pt2( 0, 5);
  NBPoint pt3(10, 0);

  VPOINT controlpts;
  controlpts.push_back( pt1 );
  controlpts.push_back( pt2 );
  controlpts.push_back( pt3 );

  NBBezier bez(controlpts);
  printTVal(bez, 0.25);
  printTVal(bez, 0.75);
  printTVal(bez, 0.99);
}

void printTVal(NBBezier & bez, double tval) {
  NBPoint res = bez.GetPoint(tval);
  std::cout << "t = " <<>
}

ChangeLog

• 0.12 (Aug 15 2004 ):
• Modules to check overflow errors added.
• 0.11 (July 31 2004):
• API to deal with 2-D Bezier curves included.
• 0.10 (July 31 2004):
• Initial Version
• Support to draw Bezier curves

Build

What external libraries do I need ?

• wxNURBS uses wxWidgets as the windowing toolkit.
  To download wxWidgets, goto http://www.wxwidgets.org.
  
  • Important: Please get version 2.4.2 of wxWidgets for building the application
  • Please install wxWidgets in a path that does not have spaces, say C:\Programs\wxWindows-2.4.2. For some reason, MinGW is not very happy with spaces in the path.
• Install MinGW from http://www.mingw.org

How do I build ?

• Set the environment variable WXDIR to point to the installation directory of wxWindows-2.4.2 in your system.


• Invoke the following command.
  

  make -f makefile.win
  

• This would build the wxNURBS executable in the directory Debug.

Screenshots

Screenshot of a wxNurbs Instance with a Bezier curve having 6 control points

Download

The current release is 0.12

• Sources (30 KB).
• Binaries (MS Windows - 3.9 MB).

Previous Versions.