Eaagles::BasicGL::Clip3D Class Reference

Inheritance diagram for Eaagles::BasicGL::Clip3D:

[legend]Collaboration diagram for Eaagles::BasicGL::Clip3D:


Public Member Functions
	Clip3D ()
void	setClippingBox (const float xmin, const float xmax, const float ymin, const float ymax, const LCreal zmin=-FLT_MAX, const float LCreal=FLT_MAX)
LcPolygon *	clip (const LcPolygon &inPoly) const
unsigned int	clip (osg::Vec3 const out, osg::Vec3 const outNorm, osg::Vec2 const outTCoord, const osg::Vec3 const in, const osg::Vec3 const inNorm, const osg::Vec2 const inTCoord, const unsigned int num) const
Static Public Member Functions
static unsigned int	polyClip2Halfspace (osg::Vec3 const q, osg::Vec3 const qn, osg::Vec2 const qt, const osg::Vec3 const p, const osg::Vec3 const pn, const osg::Vec2 const pt, const unsigned int n, const unsigned int index, const LCreal k, const bool clipUpperPlane)
Private Attributes
LCreal	x0
LCreal	x1
LCreal	y0
LCreal	y1
LCreal	z0
LCreal	z1

Detailed Description

3D polygon clipping

Constructor & Destructor Documentation

Eaagles::BasicGL::Clip3D::Clip3D ( )

Member Function Documentation

void Eaagles::BasicGL::Clip3D::setClippingBox	(	const float	xmin,
		const float	xmax,
		const float	ymin,
		const float	ymax,
		const LCreal	zmin = `-FLT_MAX`,
		const float	LCreal = `FLT_MAX`
	)

Sets the limits of the clipping box.

LcPolygon * Eaagles::BasicGL::Clip3D::clip ( const LcPolygon & inPoly ) const

clip() -- Clips the convex polygon 'inPoly' to the clipping box defined by setClippingBox(). The function returns a pointer to a new, clipped polygon, which has been pre-ref()'d, or zero if the whole 'inPoly' polygon is outside of the clipping box.

unsigned int Eaagles::BasicGL::Clip3D::clip	(	osg::Vec3 *const	out,
		osg::Vec3 *const	outNorm,
		osg::Vec2 *const	outTCoord,
		const osg::Vec3 *const	in,
		const osg::Vec3 *const	inNorm,
		const osg::Vec2 *const	inTCoord,
		const unsigned int	num
	)			const

clip() -- Clips the convex polygon 'in', which contains 'num' vertices, to the clipping box defined by setBox(). The function returns the number of vertices in the clipped polygon or zero if the whole polygon is outside of the clipping box. The vertices of the clipped polygon are returned in the user provided output arrays, which must be of at least size 'num'.

unsigned int Eaagles::BasicGL::Clip3D::polyClip2Halfspace	(	osg::Vec3 *const	q,
		osg::Vec3 *const	qn,
		osg::Vec2 *const	qt,
		const osg::Vec3 *const	p,
		const osg::Vec3 *const	pn,
		const osg::Vec2 *const	pt,
		const unsigned int	n,
		const unsigned int	index,
		const LCreal	k,
		const bool	clipUpperPlane
	)			`[static]`

polyClip2Halfspace() -- clips one coordinate of a convex polygon p against an upper or lower plane. The clipped polygon is returned in q. The number of vertices in the clipped polygon is returned by the function.