Nurbs (non-uniform rational b-spline) functionality. More...

#include <VisualNurbs.h>

Classes
class	NurbsTexture
	A texture of a NURBS. More...
Public Member Functions
	VisualNurbs (uint8 sKnotsCount, float sKnotsPointer, uint8 tKnotsCount, float tKnotsPointer, uint16 s_Stride, uint16 t_Stride, uint16 s_Order, uint16 t_Order)
	The constructor with all necessary arguments to create a NURBS.
	~VisualNurbs ()
	The destructor.
	VisualNurbs (const VisualNurbs &other)
	Copy constructor.
VisualNurbs &	operator= (const VisualNurbs &other)
	Assignment operator.
void	setControlPoints (uint16 numberOfControlPoints, double *someControlPoints)
	Stores the control points of the NURBS.
void	setTexture (uint8 sKnotsCount, float sKnotsPointer, uint8 tKnotsCount, float tKnotsPointer, uint16 s_Stride, uint16 t_Stride, uint16 s_Order, uint16 t_Order, uint32 aTextureName, bool canUseRectExtensionBool)
	Associates the NURBS with a texture.
void	setTextureControlPoints (uint16 numberOfTextureControlPoints, float *someTextureControlPoints)
	Stores the control points of the texture.
void	draw (void)
	Draws the NURBS on screen.
void	setDisplayMode (NurbsDisplayMode requestedDisplayMode)
	Sets the display mode of the NURBS to filled or outlined polygon.
void	setSamplingTolerance (double samplingTolerance)
	Sets the sampling tolerance of the NURBS.
void	setControlPointsVisibility (Visibility visibility)
	Stores whether the control points of the NURBS should be drawn with the NURBS (or stay invisible).
Private Member Functions
void	copy (const VisualNurbs &other)
	Copy method for assignment operator and copy constructor.
void	setNurbsProperty (uint32 property, float value)
	Sets an OpenGL attribute of the NURBS object.
Private Attributes
GLUnurbsObj *	nurbsObject
	The NURBS object.
uint8	sNumKnots
	The number of knots in horizontal direction.
float *	sKnots
	An array of horizontal knot values.
uint8	tNumKnots
	The number of knots in vertical direction.
float *	tKnots
	An array of vertical knot values.
uint16	sStride
	The offset between successive control points in u direction.
uint16	tStride
	The offset between successive control points in v direction.
uint16	sOrder
	The order of the NURBS surface in u direction.
uint16	tOrder
	The order of the NURBS surface in v direction.
float *	controlPoints
	An array of control points.
Visibility	controlPointsVisibility
	The visibility of the control points.
NurbsTexture *	nurbsTexture
	The texture of the NURBS.

Detailed Description

Nurbs (non-uniform rational b-spline) functionality.

Constructor & Destructor Documentation

VisualNurbs::VisualNurbs	(	uint8	sKnotsCount,
		float *	sKnotsPointer,
		uint8	tKnotsCount,
		float *	tKnotsPointer,
		uint16	s_Stride,
		uint16	t_Stride,
		uint16	s_Order,
		uint16	t_Order
	)

The constructor with all necessary arguments to create a NURBS.

Parameters:

sKnotsCount	The number of knots in horizontal direction.
sKnotsPointer	A pointer to the array of horizontal knot values. The knot values are copied.
tKnotsCount	The number of knots in vertical direction.
tKnotsPointer	A pointer to the array of vertical knot values. The knot values are copied.
s_Stride	Specifies the offset (as a number of single-precision floating point values) between successive control points in the parametric u direction in control.
t_Stride	Specifies the offset (as a number of single-precision floating point values) between successive control points in the parametric v direction in control.
s_Order	Specifies the order of the NURBS surface in the parametric u direction. The order is one more than the degree, hence a surface that is cubic in u has a u order of 4.
t_Order	Specifies the order of the NURBS surface in the parametric v direction. The order is one more than the degree, hence a surface that is cubic in v has a v order of 4.

VisualNurbs::~VisualNurbs ( )

The destructor.

VisualNurbs::VisualNurbs ( const VisualNurbs & other )

Copy constructor.

Parameters:

other Reference to another VisualNurbs.

Member Function Documentation

void VisualNurbs::copy ( const VisualNurbs & other ) [private]

Copy method for assignment operator and copy constructor.

Parameters:

other Another VisualNurbs.

void VisualNurbs::draw ( void )

Draws the NURBS on screen.

VisualNurbs & VisualNurbs::operator= ( const VisualNurbs & other )

Assignment operator.

Parameters:

other Reference to another VisualNurbs.

void VisualNurbs::setControlPoints	(	uint16	numberOfControlPoints,
		double *	someControlPoints
	)

Stores the control points of the NURBS.

Parameters:

numberOfControlPoints	The number of control points.
someControlPoints	A pointer to an array of control points. The control points are copied.

void VisualNurbs::setControlPointsVisibility ( Visibility visibility )

Stores whether the control points of the NURBS should be drawn with the NURBS (or stay invisible).

Parameters:

visibility The requested visibility of the control points.

void VisualNurbs::setDisplayMode ( NurbsDisplayMode requestedDisplayMode )

Sets the display mode of the NURBS to filled or outlined polygon.

Parameters:

requestedDisplayMode The requested display mode.

void VisualNurbs::setNurbsProperty	(	uint32	property,
		float	value
	)		`[private]`

Sets an OpenGL attribute of the NURBS object.

void VisualNurbs::setSamplingTolerance ( double samplingTolerance )

Sets the sampling tolerance of the NURBS.

Parameters:

samplingTolerance The requested sampling tolerance.

void VisualNurbs::setTexture	(	uint8	sKnotsCount,
		float *	sKnotsPointer,
		uint8	tKnotsCount,
		float *	tKnotsPointer,
		uint16	s_Stride,
		uint16	t_Stride,
		uint16	s_Order,
		uint16	t_Order,
		uint32	aTextureName,
		bool	canUseRectExtensionBool
	)

Associates the NURBS with a texture.

Parameters:

sKnotsCount	The number of knots in horizontal direction.
sKnotsPointer	A pointer to the array of horizontal knot values. The knot values are copied.
tKnotsCount	The number of knots in vertical direction.
tKnotsPointer	A pointer to the array of vertical knot values. The knot values are copied.
s_Stride	Specifies the offset (as a number of single-precision floating point values) between successive control points in the parametric u direction in control.
t_Stride	Specifies the offset (as a number of single-precision floating point values) between successive control points in the parametric v direction in control.
s_Order	Specifies the order of the NURBS surface in the parametric u direction. The order is one more than the degree, hence a surface that is cubic in u has a u order of 4.
t_Order	Specifies the order of the NURBS surface in the parametric v direction. The order is one more than the degree, hence a surface that is cubic in v has a v order of 4.
aTextureName	The name/number/id of the texture.
canUseRectExtensionBool	True if graphics system does support rectangular texture extension. False if only textures with power-of-2-dimensions are allowed.

void VisualNurbs::setTextureControlPoints	(	uint16	numberOfTextureControlPoints,
		float *	someTextureControlPoints
	)

Stores the control points of the texture.

Parameters:

numberOfTextureControlPoints	The number of control points.
someTextureControlPoints	A pointer to an array of control points. The control points are copied.