wxnurbs

Overview

2008-03-23T00:23:00.000-04:00

What ?

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 ?

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

API Usage

2008-03-22T17:34:00.004-04:00

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

2008-03-22T17:34:00.002-04:00

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

2008-03-22T17:33:00.001-04:00

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

2008-03-22T17:31:00.002-04:00

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

Download

2008-03-22T17:31:00.001-04:00

The current release is 0.12

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

Previous Versions.