NAME

SbLineProjector — line projector

INHERITS FROM

SbProjector > SbLineProjector

SYNOPSIS

#include <Inventor/projectors/SbLineProjector.h>

Methods from class SbLineProjector:

SbLineProjector()

~SbLineProjector()

void setLine(const SbLine &line)

const SbLine & getLine() const

virtual SbVec3f getVector(const SbVec2f &mousePosition1, const SbVec2f &mousePosition2)

virtual SbVec3f getVector(const SbVec2f &mousePosition)

void setStartPosition(const SbVec2f &mousePosition)

void setStartPosition(const SbVec3f &point)

Methods from class SbProjector:

virtual SbVec3f project(const SbVec2f &point)

virtual void setViewVolume(const SbViewVolume &vol)

const SbViewVolume & getViewVolume() const

virtual void setWorkingSpace(const SbMatrix &space)

const SbMatrix & getWorkingSpace() const

virtual SbProjector * copy() const

DESCRIPTION

SbLineProjector projects a 2D point, typically the location of the cursor, onto a 3D line.

METHODS

SbLineProjector()

~SbLineProjector()

Constructor and destructor. The default line passes through the origin and is aligned with the Y axis.

void setLine(const SbLine &line)

const SbLine & getLine() const

Set and get the line on which to project 2D points.

virtual SbVec3f getVector(const SbVec2f &mousePosition1, const SbVec2f &mousePosition2)

Get a vector on this line given two normalized mouse points.

virtual SbVec3f getVector(const SbVec2f &mousePosition)

Get a vector given the current mouse point. Uses the last point on this projector from the previous call to getVector() or setStartPostion(). Do not use this if the working space transform is changing since the new point will be in a different space than the old one.

void setStartPosition(const SbVec2f &mousePosition)

Set the initial position from a mouse position.

void setStartPosition(const SbVec3f &point)

Set the initial position from a point on the projector.

SEE ALSO

SbCylinderProjector, SbCylinderPlaneProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbPlaneProjector, SbSpherePlaneProjector, SbSphereProjector, SbSphereSectionProjector, SbSphereSheetProjector