Utility class for volume clipping. More...

#include <cmtkVolumeClipping.h>

Collaboration diagram for cmtk::VolumeClipping:

Public Member Functions
void	SetClippingBoundaries (const UniformVolume::CoordinateRegionType &region)
	Set clipping boundaries.
void	SetDeltaX (const Vector3D &deltaX)
	Set clipped volumes spanning vector in x-direction.
void	SetDeltaY (const Vector3D &deltaY)
	Set clipped volumes spanning vector in y-direction.
void	SetDeltaZ (const Vector3D &deltaZ)
	Set clipped volumes spanning vector in z-direction.
int	ClipX (Types::Coordinate &fromFactor, Types::Coordinate &toFactor, const Vector3D &offset, const Types::Coordinate initFromFactor=0, const Types::Coordinate initToFactor=1, const bool lowerClosed=false, const bool upperClosed=false) const
	Compute line-to-volume intersection.
int	ClipY (Types::Coordinate &fromFactor, Types::Coordinate &toFactor, const Vector3D &offset, const Types::Coordinate initFromFactor=0, const Types::Coordinate initToFactor=1) const
	Compute plane-to-volume intersection.
int	ClipZ (Types::Coordinate &fromFactor, Types::Coordinate &toFactor, const Vector3D &offset, const Types::Coordinate initFromFactor=0, const Types::Coordinate initToFactor=1) const
	Compute volume-to-volume intersection.
Private Attributes
UniformVolume::CoordinateRegionType	m_ClippingRegion
	Clipping boundaries.
Vector3D	DeltaX
	Spanning vector of the clipped volume in x-direction.
Vector3D	DeltaY
	Spanning vector of the clipped volume in y-direction.
Vector3D	DeltaZ
	Spanning vector of the clipped volume in z-direction.

Detailed Description

Utility class for volume clipping.

This class provides functions to compute intersections of volumes with lines, planes, and other volumes. Line-to-volume intersection can be computed by a single function call.

Plane to volume intersection is done by first computing a range of parallel lines that intersect the volume. Then, for each line the line to volume intersection has to be computed to determine the exact intersection.

Analog, for volume to volume intersection, first a range of parallel planes is determined. Those then have to be examined in separate as described before.

This class' main application is ray clipping for DRR computation and volume clipping for voxel based volume similarity computation. All member functions are static, so they can be used without contructing an object.

Author:: T. Rohlfing

Definition at line 67 of file cmtkVolumeClipping.h.

Member Function Documentation

void cmtk::VolumeClipping::SetDeltaX ( const Vector3D & deltaX ) [inline]

Set clipped volumes spanning vector in x-direction.

Parameters:

deltaX The direction vector of the rows in the volume to be clipped. The coordinate transformation applied to the clipped volume must have been applied to this vector previously inorder for the clipping to be performed correctly.

Definition at line 81 of file cmtkVolumeClipping.h.

void cmtk::VolumeClipping::SetDeltaY ( const Vector3D & deltaY ) [inline]

Set clipped volumes spanning vector in y-direction.

Parameters:

deltaY The direction vector of the columns in the volume to be clipped. This is the vector from the origin of the first row in each plane to the origin of the last row in that same plane. The coordinate transformation applied to the clipped volume must have been applied to this vector previously inorder for the clipping to be performed correctly.

Definition at line 94 of file cmtkVolumeClipping.h.

void cmtk::VolumeClipping::SetDeltaZ ( const Vector3D & deltaZ ) [inline]

Set clipped volumes spanning vector in z-direction.

Parameters:

deltaZ The direction vector of the planes in the volume to be clipped. This is the vector from the origin of the first plane in the volume to the origin of the last plane. The coordinate transformation applied to the clipped volume must have been applied to this vector previously inorder for the clipping to be performed correctly.

Definition at line 107 of file cmtkVolumeClipping.h.