vrvGraphics-based implementation of 2D Grid Lines on projected databases \ingroup vrvOsg More...

Inheritance diagram for makVrv::DtProjectedGridLinesDrawer:

Classes
struct	GridLine
Public Member Functions
	DtProjectedGridLinesDrawer (DtDe &de)
	CTOR.
virtual	~DtProjectedGridLinesDrawer ()
	DTOR.
virtual void	drawGridLines ()
	Draw the grid lines (and labels)
virtual void	setMaxGridLines (int maxGridLines)
	Override base class to allocate memory for lines.
virtual void	setWindowDimensions (double startWindowX, double startWindowY, double endWindowX, double endWindowY)
	Set the approximate DB dimensions of the view within the unrotated window.
virtual void	setCenter (const osg::Vec2d &center)
	Set the DB location at the center of the window.
virtual void	setHeading (double heading)
	Set the current observer heading.
virtual void	setScale (double scale)
	Set the current observer scale.
virtual void	destroyGridLines ()
	Destroy all grid lines in the current channel.
Protected Types
enum	LabelPosition { Bottom, Left, Top, Right, Indeterminate }
	Represent an screen edge to place a label on. More...
typedef std::vector< GridLine >	GridLineVector
typedef std::vector < DtTextProxy * >	GridBoxLabelArray
typedef std::vector< float >	VertexList
	his type can be used to provide a list of vertices to the polygon objects
typedef boost::unordered_set < DtUnicode >	UsedGridLabels
Protected Member Functions
virtual void	drawNorthSouthGridLinesAndLabels ()
virtual void	drawEastWestGridLinesAndLabels ()
virtual void	findSpacing ()
	Determine, based on autoSpacing setting or fixed spacing value, what the grid spacing should be.
virtual void	anchorAndOffsetLines ()
	Find the range of x's and y's to attempt to draw grid lines for (in database coordinates).
virtual DtUnicode	createLabel (double &xMeters, double yMeters, bool isNorthSouth)
	Given x and y in database coordinates, create a label string for the grid line in the coordinate system appropriate for the current grid type.
virtual bool	labelGridBox (double nsValue, double ewValue, int labelIndex)
void	convertDegreeSpacingToMeters (double gridSpacing, double &xSpacing, double &ySpacing) const
	Convert degree spacing to meters, used to actually draw the lines Note that the spacing may be different for x and y when the units are degrees.
virtual DtFont::TextAlignement	offsetLabel (double xSrc, double ySrc, double &xOffset, double &yOffset, DtBoundingBox &bbox) const
	Find the offset and alignment for a label.
virtual DtFont::TextAlignement	offsetGridBoxLabel (double xSrc, double ySrc, double &xOffset, double &yOffset, DtBoundingBox &bbox) const
	Find the offset and alignment for a grid box label.
virtual LabelPosition	calcLabelPosition (double x, double y) const
	Determine which screen edge a label is closest to.
virtual void	calcDesiredLabelPosition ()
	Determine which screen edge a label type is supposed to be on.
double	degreesLatitudeToMeters (double x, double y) const
	Convert one degree of latitude (on the current flat-earth projected db) into meters.
double	convertToMetersOrDegrees (double value) const
virtual double	degreesLongitudeToMeters () const
	Convert one degree of longitude (on the current flat-earth projected db) into meters.
virtual double	fixedSpacingAmount () const
	Return the fixed spacing amount for the current gridType.
virtual double	xOffset () const
	Return the x offset for the current gridType.
virtual double	yOffset () const
	Return the y offset for the current gridType.
virtual void	clearUnusedLinesAndLabels (int index, GridLineVector &lines)
virtual void	clearUnusedGridBoxLabels (int index)
virtual bool	drawGridLineAndLabel (double startX, double startY, double endX, double endY, GridLine &gridLine, float lineColor, LabelPosition labelPosition, float labelColor, bool isNorthSouth)
virtual void	labelGridBoxes ()
	Iterate through the grid line intersections, considering them as grid boxes, and request labels from the coordinate display object.
Static Protected Member Functions
static void	rotate (const DtProjectedGridLinesDrawer::VertexList &in, double rad, DtProjectedGridLinesDrawer::VertexList &out)
	Utility function to rotate a list of vertices.
static void	translate (const DtProjectedGridLinesDrawer::VertexList &in, const osg::Vec2 &translation, DtProjectedGridLinesDrawer::VertexList &out)
	Utility function to translate a list of vertices.
static void	scale (const DtProjectedGridLinesDrawer::VertexList &in, double s, DtProjectedGridLinesDrawer::VertexList &out)
	Utility function to scale a list of vertices.
Protected Attributes
GridLineVector	myEastWestLines
GridLineVector	myNorthSouthLines
GridBoxLabelArray	myGridBoxLabels
UsedGridLabels	myUsedGridLabels
double	myHeading
osg::Vec2d	myCenter
double	myStartWindowX
double	myStartWindowY
double	myEndWindowX
double	myEndWindowY
double	myScale
double	myAnchoredMinX
double	myAnchoredMinY
double	myAnchoredMaxX
double	myAnchoredMaxY
double	myXSpacing
double	myYSpacing
LabelPosition	myNorthSouthLabelPosition
LabelPosition	myEastWestLabelPosition
Private Member Functions
	DtProjectedGridLinesDrawer (const DtProjectedGridLinesDrawer &orig)
	Unimplemented copy constructor.
DtProjectedGridLinesDrawer &	operator= (const DtProjectedGridLinesDrawer &rhs)
	Unimplemented assignment operator.

Detailed Description

vrvGraphics-based implementation of 2D Grid Lines on projected databases \ingroup vrvOsg

Member Typedef Documentation

typedef std::vector<GridLine> makVrv::DtProjectedGridLinesDrawer::GridLineVector [protected]

typedef std::vector<DtTextProxy*> makVrv::DtProjectedGridLinesDrawer::GridBoxLabelArray [protected]

typedef std::vector<float> makVrv::DtProjectedGridLinesDrawer::VertexList [protected]

his type can be used to provide a list of vertices to the polygon objects

typedef boost::unordered_set<DtUnicode> makVrv::DtProjectedGridLinesDrawer::UsedGridLabels [protected]

Member Enumeration Documentation

enum makVrv::DtProjectedGridLinesDrawer::LabelPosition [protected]

Represent an screen edge to place a label on.

Enumerator:

Bottom
Left
Top
Right
Indeterminate

Constructor & Destructor Documentation

makVrv::DtProjectedGridLinesDrawer::DtProjectedGridLinesDrawer ( DtDe & de )

CTOR.

virtual makVrv::DtProjectedGridLinesDrawer::~DtProjectedGridLinesDrawer ( ) [virtual]

DTOR.

makVrv::DtProjectedGridLinesDrawer::DtProjectedGridLinesDrawer ( const DtProjectedGridLinesDrawer & orig ) [private]

Unimplemented copy constructor.

Member Function Documentation

virtual void makVrv::DtProjectedGridLinesDrawer::drawGridLines ( ) [virtual]

Draw the grid lines (and labels)

virtual void makVrv::DtProjectedGridLinesDrawer::setMaxGridLines ( int maxGridLines ) [virtual]

Override base class to allocate memory for lines.

Reimplemented from makVrv::DtGridLinesParameters.

virtual void makVrv::DtProjectedGridLinesDrawer::setWindowDimensions	(	double	startWindowX,
		double	startWindowY,
		double	endWindowX,
		double	endWindowY
	)		`[virtual]`

Set the approximate DB dimensions of the view within the unrotated window.

virtual void makVrv::DtProjectedGridLinesDrawer::setCenter ( const osg::Vec2d & center ) [virtual]

Set the DB location at the center of the window.

virtual void makVrv::DtProjectedGridLinesDrawer::setHeading ( double heading ) [virtual]

Set the current observer heading.

virtual void makVrv::DtProjectedGridLinesDrawer::setScale ( double scale ) [virtual]

Set the current observer scale.

virtual void makVrv::DtProjectedGridLinesDrawer::destroyGridLines ( ) [virtual]

Destroy all grid lines in the current channel.

virtual void makVrv::DtProjectedGridLinesDrawer::drawNorthSouthGridLinesAndLabels ( ) [protected, virtual]

virtual void makVrv::DtProjectedGridLinesDrawer::drawEastWestGridLinesAndLabels ( ) [protected, virtual]

virtual void makVrv::DtProjectedGridLinesDrawer::findSpacing ( ) [protected, virtual]

Determine, based on autoSpacing setting or fixed spacing value, what the grid spacing should be.

Modifies myXSpacing and myYSpacing

virtual void makVrv::DtProjectedGridLinesDrawer::anchorAndOffsetLines ( ) [protected, virtual]

Find the range of x's and y's to attempt to draw grid lines for (in database coordinates).

It takes the grid type into account, and attempts to use a logical origin (like the zone origin in UTM).

virtual DtUnicode makVrv::DtProjectedGridLinesDrawer::createLabel	(	double &	xMeters,
		double	yMeters,
		bool	isNorthSouth
	)		`[protected, virtual]`

Given x and y in database coordinates, create a label string for the grid line in the coordinate system appropriate for the current grid type.

This method may change xMeters if mecessary to get a migrid Label into the current UTM zone

virtual bool makVrv::DtProjectedGridLinesDrawer::labelGridBox	(	double	nsValue,
		double	ewValue,
		int	labelIndex
	)		`[protected, virtual]`

void makVrv::DtProjectedGridLinesDrawer::convertDegreeSpacingToMeters	(	double	gridSpacing,
		double &	xSpacing,
		double &	ySpacing
	)		const `[protected]`

Convert degree spacing to meters, used to actually draw the lines Note that the spacing may be different for x and y when the units are degrees.

virtual DtFont::TextAlignement makVrv::DtProjectedGridLinesDrawer::offsetLabel	(	double	xSrc,
		double	ySrc,
		double &	xOffset,
		double &	yOffset,
		DtBoundingBox &	bbox
	)		const `[protected, virtual]`

Find the offset and alignment for a label.

virtual DtFont::TextAlignement makVrv::DtProjectedGridLinesDrawer::offsetGridBoxLabel	(	double	xSrc,
		double	ySrc,
		double &	xOffset,
		double &	yOffset,
		DtBoundingBox &	bbox
	)		const `[protected, virtual]`

Find the offset and alignment for a grid box label.

virtual LabelPosition makVrv::DtProjectedGridLinesDrawer::calcLabelPosition	(	double	x,
		double	y
	)		const `[protected, virtual]`

Determine which screen edge a label is closest to.

virtual void makVrv::DtProjectedGridLinesDrawer::calcDesiredLabelPosition ( ) [protected, virtual]

Determine which screen edge a label type is supposed to be on.

double makVrv::DtProjectedGridLinesDrawer::degreesLatitudeToMeters	(	double	x,
		double	y
	)		const `[protected]`

Convert one degree of latitude (on the current flat-earth projected db) into meters.

double makVrv::DtProjectedGridLinesDrawer::convertToMetersOrDegrees ( double value ) const [protected]

virtual double makVrv::DtProjectedGridLinesDrawer::degreesLongitudeToMeters ( ) const [protected, virtual]

Convert one degree of longitude (on the current flat-earth projected db) into meters.

virtual double makVrv::DtProjectedGridLinesDrawer::fixedSpacingAmount ( ) const [protected, virtual]

Return the fixed spacing amount for the current gridType.

Returns the spacing amount in meters or degrees.

virtual double makVrv::DtProjectedGridLinesDrawer::xOffset ( ) const [protected, virtual]

Return the x offset for the current gridType.

Returns the x offset in meters or degrees.

virtual double makVrv::DtProjectedGridLinesDrawer::yOffset ( ) const [protected, virtual]

Return the y offset for the current gridType.

Returns the y offset in meters or degrees.

virtual void makVrv::DtProjectedGridLinesDrawer::clearUnusedLinesAndLabels	(	int	index,
		GridLineVector &	lines
	)		`[protected, virtual]`

virtual void makVrv::DtProjectedGridLinesDrawer::clearUnusedGridBoxLabels ( int index ) [protected, virtual]

virtual bool makVrv::DtProjectedGridLinesDrawer::drawGridLineAndLabel	(	double	startX,
		double	startY,
		double	endX,
		double	endY,
		GridLine &	gridLine,
		float *	lineColor,
		LabelPosition	labelPosition,
		float *	labelColor,
		bool	isNorthSouth
	)		`[protected, virtual]`

virtual void makVrv::DtProjectedGridLinesDrawer::labelGridBoxes ( ) [protected, virtual]

Iterate through the grid line intersections, considering them as grid boxes, and request labels from the coordinate display object.

If non-zero length labels are returned, and the label isn't a duplicate, add the label to the grid.

static void makVrv::DtProjectedGridLinesDrawer::rotate	(	const DtProjectedGridLinesDrawer::VertexList &	in,
		double	rad,
		DtProjectedGridLinesDrawer::VertexList &	out
	)		`[static, protected]`

Utility function to rotate a list of vertices.

static void makVrv::DtProjectedGridLinesDrawer::translate	(	const DtProjectedGridLinesDrawer::VertexList &	in,
		const osg::Vec2 &	translation,
		DtProjectedGridLinesDrawer::VertexList &	out
	)		`[static, protected]`

Utility function to translate a list of vertices.

static void makVrv::DtProjectedGridLinesDrawer::scale	(	const DtProjectedGridLinesDrawer::VertexList &	in,
		double	s,
		DtProjectedGridLinesDrawer::VertexList &	out
	)		`[static, protected]`