lti::rayTraceObject< T > Class Template Reference

abstract class parent for all objects that can be ray-traced. More...

#include <ltiDraw3D.h>

Inheritance diagram for lti::rayTraceObject< T >:

Collaboration diagram for lti::rayTraceObject< T >:

Public Member Functions
	rayTraceObject (draw3D< T > &drawer)
virtual bool	rayTrace (const int x, const int y, double &z2, T &val)=0
virtual bool	render ()=0
virtual const char *	getTypeName () const
Protected Member Functions
T	multiplyNormed (const T &a, const T &b) const
T	addSaturated (const T &a, const T &b) const
void	p2Dto3D (const int &x, const int &y, dpoint3D &imgp, dpoint3D &ray) const
void	buildInverseCamera ()
Protected Attributes
draw3D< T > &	drawer
const draw3D< T >::parameters &	param
draw3D< T >::hmatrix	cam
draw3D< T >::hmatrix	camInv
dpoint	center

Detailed Description

abstract class parent for all objects that can be ray-traced.

All objects derived from this class are used internally in lti::draw3D objects.

template<class T >

lti::rayTraceObject< T >::rayTraceObject ( draw3D< T > & drawer )

The constructor must receive the drawer object, where this object will be draw.

template<class T >

T lti::rayTraceObject< T >::addSaturated	(	const T &	a,
		const T &	b
	)			const `[protected]`

add with clipping

template<class T >

void lti::rayTraceObject< T >::buildInverseCamera ( ) [protected]

compute the inverse of the camera transformation matrix (only the rotation part is created.

The result is left in the attribute member camInv

template<class T >

virtual const char* lti::rayTraceObject< T >::getTypeName ( ) const [virtual]

return the name of the this object

Reimplemented from lti::object.

template<class T >

T lti::rayTraceObject< T >::multiplyNormed	(	const T &	a,
		const T &	b
	)			const `[protected]`

multiply ((a/norm) * (b/norm))*norm

template<class T >

void lti::rayTraceObject< T >::p2Dto3D	(	const int &	x,
		const int &	y,
		dpoint3D &	imgp,
		dpoint3D &	ray
	)			const `[protected]`

compute the vector in world coordinates parallel to the ray going through the focal point and the point (x,y) in the image plane.

Parameters:

	x	image coordinate x
	y	image coordinate y
	imgp	position of the image point (x,y) (on the image plane) in the world coordinate system
	ray	direction of the ray going through the point (x,y) and the focal point.

template<class T >

virtual bool lti::rayTraceObject< T >::rayTrace	(	const int	x,
		const int	y,
		double &	z2,
		T &	val
	)			`[pure virtual]`

Compute the color value of the pixel at x,y.

Parameters:

	x	x coordinate in the image
	y	y coordinate in the image
	z2	z coordinate of the surface point belonging to the given pixel (required for the z-buffering).
	val	computed color (or gray) value for the given (x,y) pixel