VRS::Nurbs Class Reference
Non-uniform rational B-spline. More...
#include <vrs/nurbs.h>
Public Member Functions | |
| Nurbs (int orderU, int orderV, int nU, int nV, double tolerance=25.0) | |
| virtual void | setCharacteristic (int orderU, int orderV, int nU, int nV) |
| virtual int | getNU () const |
| virtual int | getNV () const |
| virtual int | getOrderU () const |
| virtual int | getOrderV () const |
| virtual void | setVertex (int iu, int iv, const Vector &) |
| virtual Vector | getVertex (int iu, int iv) const |
| virtual void | setWeight (int ui, int vi, double w) |
| virtual double | getWeight (int ui, int vi) const |
| virtual void | loadVertices (Iterator< Vector > *) |
| virtual void | loadVertices3fv (int novertices, const double *) |
| virtual void | loadVertices4fv (int novertices, const double *) |
| virtual void | loadWeights (const Array< double > &weights) |
| virtual void | setKnotU (int i, double v) |
| virtual void | setKnotV (int i, double v) |
| virtual double | getKnotU (int i) const |
| virtual double | getKnotV (int i) const |
| virtual void | loadKnotsU (const Array< double > &knotsU) |
| virtual void | loadKnotsV (const Array< double > &knotsV) |
| virtual void | loadKnotsUfv (int no, const double *) |
| virtual void | loadKnotsVfv (int no, const double *) |
| virtual bool | knotsConsistent () const |
| Set/Query the Knot and Coordinate arrays. | |
| virtual void | setSamplingTolerance (double pixel) |
| virtual double | getSamplingTolerance () const |
| virtual double * | verticesRep () const |
| virtual double * | knotsRepU () const |
| virtual double * | knotsRepV () const |
| Direct memory access, used by painters. | |
| virtual Bounds | boundingBox () const |
| Bounding box of the NURBS. | |
| VRS_TYPEINFO (Nurbs, Shape) | |
| VRS_SERIALIZABLE (Nurbs) | |
Protected Member Functions | |
| Nurbs () | |
Detailed Description
Non-uniform rational B-spline.Constructor & Destructor Documentation
| VRS::Nurbs::Nurbs | ( | int | orderU, | |
| int | orderV, | |||
| int | nU, | |||
| int | nV, | |||
| double | tolerance = 25.0 | |||
| ) |
| VRS::Nurbs::Nurbs | ( | ) | [protected] |
Member Function Documentation
| virtual void VRS::Nurbs::setCharacteristic | ( | int | orderU, | |
| int | orderV, | |||
| int | nU, | |||
| int | nV | |||
| ) | [virtual] |
| int VRS::Nurbs::getNU | ( | ) | const [inline, virtual] |
| int VRS::Nurbs::getNV | ( | ) | const [inline, virtual] |
| int VRS::Nurbs::getOrderU | ( | ) | const [inline, virtual] |
| int VRS::Nurbs::getOrderV | ( | ) | const [inline, virtual] |
A NURB surface is characterized by the following coefficients: orderU : order in u dimension orderV : order in v dimension nU : no of rows of control point grid nV : no of columns of control point grid
'setCharacteristic' resizes the internal arrays used to store the data. The current contents of vertex array, weight array, and knot vectors might get lost. Constraints: order must be positive, and the number of grid points must be equal or more than the order.
| virtual void VRS::Nurbs::setVertex | ( | int | iu, | |
| int | iv, | |||
| const Vector & | ||||
| ) | [virtual] |
| virtual Vector VRS::Nurbs::getVertex | ( | int | iu, | |
| int | iv | |||
| ) | const [virtual] |
| virtual void VRS::Nurbs::setWeight | ( | int | ui, | |
| int | vi, | |||
| double | w | |||
| ) | [virtual] |
| virtual double VRS::Nurbs::getWeight | ( | int | ui, | |
| int | vi | |||
| ) | const [virtual] |
The grid of control points consists of nU * nV points. Each point is specified by its coordinates and its weight. The index of a vertex and its weights is (ui, vi), 0 <= ui < nU, and 0 <= vi < nV.
| virtual void VRS::Nurbs::loadVertices3fv | ( | int | novertices, | |
| const double * | ||||
| ) | [virtual] |
| virtual void VRS::Nurbs::loadVertices4fv | ( | int | novertices, | |
| const double * | ||||
| ) | [virtual] |
| virtual void VRS::Nurbs::loadWeights | ( | const Array< double > & | weights | ) | [virtual] |
For convenience, 'loadVertices' methods provide a faster way to set the whole grid of vertices. 'loadVertices3fv' expects an array of floats in which for each vertex (x, y, z) values are stored. 'loadVertices4fv' expects an array of floats in which for each vertex (x, y, z, w) values are stored.
| virtual void VRS::Nurbs::setKnotU | ( | int | i, | |
| double | v | |||
| ) | [virtual] |
| virtual void VRS::Nurbs::setKnotV | ( | int | i, | |
| double | v | |||
| ) | [virtual] |
| virtual double VRS::Nurbs::getKnotU | ( | int | i | ) | const [virtual] |
| virtual double VRS::Nurbs::getKnotV | ( | int | i | ) | const [virtual] |
| virtual void VRS::Nurbs::loadKnotsU | ( | const Array< double > & | knotsU | ) | [virtual] |
| virtual void VRS::Nurbs::loadKnotsV | ( | const Array< double > & | knotsV | ) | [virtual] |
| virtual void VRS::Nurbs::loadKnotsUfv | ( | int | no, | |
| const double * | ||||
| ) | [virtual] |
| virtual void VRS::Nurbs::loadKnotsVfv | ( | int | no, | |
| const double * | ||||
| ) | [virtual] |
| virtual bool VRS::Nurbs::knotsConsistent | ( | ) | const [virtual] |
Set/Query the Knot and Coordinate arrays.
| virtual void VRS::Nurbs::setSamplingTolerance | ( | double | pixel | ) | [virtual] |
| double VRS::Nurbs::getSamplingTolerance | ( | ) | const [inline, virtual] |
The sampling tolerance specifies the maximal length of line segments or edges of polygons used to render NURBS. Default is 25.
| double * VRS::Nurbs::verticesRep | ( | ) | const [inline, virtual] |
| double * VRS::Nurbs::knotsRepU | ( | ) | const [inline, virtual] |
| double * VRS::Nurbs::knotsRepV | ( | ) | const [inline, virtual] |
Direct memory access, used by painters.
| virtual Bounds VRS::Nurbs::boundingBox | ( | ) | const [virtual] |
| VRS::Nurbs::VRS_SERIALIZABLE | ( | Nurbs | ) |
The documentation for this class was generated from the following file: