Class with double minx,maxx,miny,maxy. More...

Inheritance diagram for Laxkit::DoubleBBox:

Public Member Functions
	DoubleBBox ()
	Create empty invalid bbox (maxx<minx and maxy<miny).
	DoubleBBox (flatpoint p)
	Create box whose bounds are p.
	DoubleBBox (double mix, double max, double miy, double may)
	Create box whose bounds are as given.
virtual void	clear ()
	Make box invalid: set minx=miny=0 and maxx=maxy=-1.
virtual void	addtobounds (double x, double y)
virtual void	addtobounds (flatpoint p)
	Expand bounds to contain p. Set the bounds to p if current bounds are invalid.
virtual void	addtobounds (DoubleBBox *bbox)
	Add the bbox to the bounds. Set the bounds if current bounds are invalid.
virtual void	addtobounds (const double m, DoubleBBox bbox)
	Add bbox to bounds, first transforming it by 6 element transform matrix m.
virtual void	setbounds (DoubleBBox *bbox)
	Just copy over the bounds.
virtual void	setbounds (flatpoint *pts, int n)
	Make this bbox be the bounds for the given n points. (does not add to previous bounds)
virtual void	setbounds (double mix, double max, double miy, double may)
	Set the bounds to the specified values.
virtual int	validbounds ()
	Returns maxx>=minx && maxy>=miny.
virtual int	intersect (double mix, double max, double miy, double may, int settointersection=0)
	Intersect the given bounds with this's bounds. Return 1 for non-empty intersection.
virtual int	intersect (DoubleBBox *bbox, int settointersection=0)
	Just return intersect(bbox.minx,...,settointersection).
virtual int	intersect (double m, DoubleBBox bbox, int touching, int settointersection)
	Does the transformed box touch. **** incomplete implementation.
virtual int	boxcontains (double x, double y)
	Return whether the given point is contained within or on the bounds.
virtual flatpoint	BBoxPoint (double x, double y)

Public Attributes
double	minx
double	maxx
double	miny
double	maxy

Detailed Description

Class with double minx,maxx,miny,maxy.

Member Function Documentation

flatpoint Laxkit::DoubleBBox::BBoxPoint	(	double	x,
		double	y
	)

virtual

Return the absolute point given bbox points. That is, point (0,0) is returned as (minx,miny) and (1,1) is returned as (maxx, maxy).

int Laxkit::DoubleBBox::boxcontains	(	double	x,
		double	y
	)

virtual

Return whether the given point is contained within or on the bounds.

Invalid bounds will always return 0.

int Laxkit::DoubleBBox::intersect	(	double	mix,
		double	max,
		double	miy,
		double	may,
		int	settointersection = `0`
	)

virtual

Intersect the given bounds with this's bounds. Return 1 for non-empty intersection.

If settointersection!=0, then set current bounds to the intersection or invalid bounds if there is no intersection.

Todo:: should me more specific about the kind of intersection: all inside, all outside, or just touching.

Referenced by Laxkit::DisplayerXlib::imageout(), intersect(), LaxInterfaces::CaptionInterface::Refresh(), and LaxInterfaces::ImageInterface::Refresh().

int Laxkit::DoubleBBox::intersect	(	double *	m,
		DoubleBBox *	bbox,
		int	touching,
		int	settointersection
	)

virtual

Does the transformed box touch. **** incomplete implementation.

If settointersection, then set the bounds of *this to the bounding box of the intersection. If touching

Todo:

*** this is not well implemented, settointersection not implemented.

*** this needs work so that there is option

References Laxkit::transform_point().

The documentation for this class was generated from the following files:

doublebbox.h
doublebbox.cc

Public Member Functions

Public Attributes

Detailed Description

Member Function Documentation