Eaagles::BasicGL::LcPolygon Class Reference

Inherits Eaagles::BasicGL::LcGraphic.

Inheritance diagram for Eaagles::BasicGL::LcPolygon:

[legend]Collaboration diagram for Eaagles::BasicGL::LcPolygon:

[legend]List of all members.

Public Types
enum	{ A = 0, B = 1, C = 2, D = 3 }
Public Member Functions
	LcPolygon ()
const osg::Vec3 *	getNormal () const
void	setNormal (const osg::Vec3 &nn)
bool	calcNormal ()
bool	arePlaneCoeffValid () const
const osg::Vec4 *	getPlaneCoeff () const
bool	calcPlaneCoeff ()
LCreal	calcZ (const osg::Vec2 &point) const
unsigned int	getLayer () const
void	setLayer (const unsigned int newLayer)
virtual void	drawFunc ()
Static Public Member Functions
static bool	calcNormal (osg::Vec3 &norm, const osg::Vec3 v[3])
static bool	calcPlaneCoeff (osg::Vec4 &cc, const osg::Vec3 v[3])
static LCreal	calcZ (const osg::Vec2 &point, const osg::Vec4 &coeff)
Private Attributes
osg::Vec4	coeff
bool	coeffValid
osg::Vec3	norm
unsigned int	layerValue

---

Detailed Description

General purpose polygon 

---

Member Enumeration Documentation

anonymous enum

Enumerator:

A
B
C
D

---

Constructor & Destructor Documentation

Eaagles::BasicGL::LcPolygon::LcPolygon

(

)

Constructor. Initializes the coefficients of the plane equation (a vector of type osg::Vec4) to (0, 0, 0, 0); sets 'coeffValid' indicating if the coefficients are valid and sets the normal to the polygon 'norm' (type osg::Vec3) to (1, 0, 0).

---

Member Function Documentation

const osg::Vec3* Eaagles::BasicGL::LcPolygon::getNormal

(

)

const [inline]

Returns the vector normal to this polygon. Calling calcNormal() will compute the normal vector for this polygon.

void Eaagles::BasicGL::LcPolygon::setNormal

(

const osg::Vec3 &

nn

)

[inline]

Sets the normal to the polygon to nn.

bool Eaagles::BasicGL::LcPolygon::calcNormal

(

)

Computes the vector normal to the polygon.

bool Eaagles::BasicGL::LcPolygon::calcNormal	(	osg::Vec3 &	norm,
		const osg::Vec3	v[3]
	)			[static]

Computes the normal vector 'norm' for the plane defined by the three vertices 'v'. Returns true if norm is valid.

bool Eaagles::BasicGL::LcPolygon::arePlaneCoeffValid

(

)

const [inline]

Returns true if the coefficients of the plane equation are valid.

const osg::Vec4* Eaagles::BasicGL::LcPolygon::getPlaneCoeff

(

)

const [inline]

Returns the plane equation coefficients for the plane containing this polygon. Calling calcPlaneCoeff() will compute these coefficents for this polygon.

bool Eaagles::BasicGL::LcPolygon::calcPlaneCoeff

(

)

Computes the plane equation coefficient for the polygon.

bool Eaagles::BasicGL::LcPolygon::calcPlaneCoeff	(	osg::Vec4 &	cc,
		const osg::Vec3	v[3]
	)			[static]

Computes the plane equation coefficients for the plane defined by the three vertices v. This returns true if the coefficients are valid.

LCreal Eaagles::BasicGL::LcPolygon::calcZ

(

const osg::Vec2 &

point

)

const

Compute the Z value of the polygon. The plane equation coefficients must be valid.

LCreal Eaagles::BasicGL::LcPolygon::calcZ	(	const osg::Vec2 &	point,
		const osg::Vec4 &	coeff
	)			[static]

Computes the Z value for a point 'p', located on the plane defined by the coefficients 'coeff'.

unsigned int Eaagles::BasicGL::LcPolygon::getLayer

(

)

const [inline]

Returns the layer value.

void Eaagles::BasicGL::LcPolygon::setLayer

(

const unsigned int

newLayer

)

Sets the layer value to newLayer.

void Eaagles::BasicGL::LcPolygon::drawFunc

(

)

[virtual]

LcGraphic Interface.

Reimplemented from Eaagles::BasicGL::LcGraphic.

---

Member Data Documentation

osg::Vec4 Eaagles::BasicGL::LcPolygon::coeff [private]

Coefficients of the plane equation.

bool Eaagles::BasicGL::LcPolygon::coeffValid [private]

'coeff' numbers are valid

osg::Vec3 Eaagles::BasicGL::LcPolygon::norm [private]

normal to the polygon

unsigned int Eaagles::BasicGL::LcPolygon::layerValue [private]

Layer value.

---