makVrv::DtGeocentricGridLinesDrawer Class Reference

vrvGraphics-based implementation of 2D Grid Lines on geocentric databases More...

Inheritance diagram for makVrv::DtGeocentricGridLinesDrawer:

List of all members.

Public Member Functions
	DtGeocentricGridLinesDrawer (DtDe &de)
	CTOR.
virtual	~DtGeocentricGridLinesDrawer ()
	DTOR.
virtual void	drawGridLines ()
	Main entry point - draw the geocentric grid lines.
virtual void	setScale (double scale)
	Set the current observer 2D scale.
virtual void	setObserverPosition (const DtVector &position)
	Set the observer position.
virtual void	setChannelDimensions (int startChannelX, int startChannelY, int endChannelX, int endChannelY)
	Override to set up expansion values.
Protected Types
typedef std::vector < DtLineSegment * >	GridLine
typedef std::vector< GridLine >	GridLineVector
typedef std::vector < DtTextProxy * >	LabelArray
Protected Member Functions
virtual void	setupReferenceEllipsoid ()
	Set up a reference ellipsoid for the current coordinate system that can be reused for all geodetic coordinate objects.
virtual void	setupTopoGeocTransforms ()
	Set up transforms between Geocentric and geodetic coordinates.
virtual bool	pointVisible (const DtVector &point) const
	Determine if the geocentric point specified could be visible (ignoring the current observer orientation)
virtual void	findPolarSpacing ()
	Determine the spacings to use when one of the poles is visible.
virtual void	drawPolarLongitudeLines ()
	Draw the longitude lines when one of the poles is visible.
virtual void	drawPolarLatitudeLines ()
	Draw the latitude lines when one of the poles is visible.
virtual void	findLatLonWindowDimensions ()
	Find the range of longitude and latitude to draw lines over based on the window dimensions (and scale and observer position)
virtual void	findSpacing ()
	Determine the spacings to use when neither pole is visible.
virtual void	anchorAndOffsetLines ()
	find the correct starting point for longitude and latitude lines given the current spacing and offsets specified
virtual void	drawLongitudeLines ()
	Draw the longitude lines when neither pole is visible.
virtual void	drawLatitudeLines ()
	Draw the latitude lines when neither pole is visible.
virtual void	createLabel (DtTextProxy *&label, double radians, bool isLongitude) const
	Create a label.
virtual void	destroyGridLines ()
	Destroy all grid lines.
virtual bool	clip3D (const DtVector &pointA, const DtVector &pointB, DtVector &clippedA, DtVector &clippedB) const
	Returns false if A and B are beyond the clip plane.
virtual void	clearUnusedLinesAndLabels (int index, GridLineVector &lines, LabelArray &labels)
	Deallocates all segments and labels for indices at and above the provided index in the provided GridLineVector.
virtual void	clearUnusedSegments (int index, GridLine &line)
	Deallocates all line segments at and above the provided index in the provided GridLine.
virtual void	destroyLinesAndLabels (GridLineVector &lines, LabelArray &labels)
	Deallocates all line segments and all labels in the GridLineVector and label arrays provided.
virtual void	resizeLinesAndLabels (GridLineVector &lines, LabelArray &labels, int numLines)
	Set the number of lines to draw in a frame Will resize /cleanup current memory allocations for lines and labels.
virtual bool	drawLineSegment (DtLineSegment *&segment, DtVector start, DtVector end, float *colorArray, bool *pass3D=0)
	Draw a geocentric line segment, if its visible.
virtual GridLine &	getSegmentedLine (GridLineVector &lines, int index, int numSegments)
	Returns the line from the line vector at the specified index with enough segment pointers allocated.
Protected Attributes
GridLineVector	myLongitudeLines
GridLineVector	myLatitudeLines
LabelArray	myLongitudeLabels
LabelArray	myLatitudeLabels
double	myLatSpacing
double	myLonSpacing
double	myScale
unsigned int	myChannelSize
DtVector	myObserverPosition
double	myObserverLatitude
double	myObserverLongitude
int	myChannelExpansionX
int	myChannelExpansionY
DtVector	myClipNormal
double	myStartLat
double	myEndLat
double	myStartLon
double	myEndLon
DtCoordTransform	myGeocToTopoTransform
DtCoordTransform	myTopoToGeocTransform
DtReferenceEllipsoid	myReferenceEllipsoid
double	myAnchoredStartLat
double	myAnchoredEndLat
double	myAnchoredStartLon
double	myAnchoredEndLon
bool	myLatCrossesPole
Private Member Functions
	DtGeocentricGridLinesDrawer (const DtGeocentricGridLinesDrawer &orig)
	Unimplemented Copy Constructor.
DtGeocentricGridLinesDrawer &	operator= (const DtGeocentricGridLinesDrawer &rhs)
	Unimplemented assignment operator.

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Detailed Description

vrvGraphics-based implementation of 2D Grid Lines on geocentric databases

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Member Typedef Documentation

typedef std::vector<DtLineSegment*> makVrv::DtGeocentricGridLinesDrawer::GridLine [protected]

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

typedef std::vector<DtTextProxy*> makVrv::DtGeocentricGridLinesDrawer::LabelArray [protected]

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Constructor & Destructor Documentation

makVrv::DtGeocentricGridLinesDrawer::DtGeocentricGridLinesDrawer

(

DtDe &

de

)

CTOR.

virtual makVrv::DtGeocentricGridLinesDrawer::~DtGeocentricGridLinesDrawer

(

)

[virtual]

DTOR.

makVrv::DtGeocentricGridLinesDrawer::DtGeocentricGridLinesDrawer

(

const DtGeocentricGridLinesDrawer &

orig

)

[private]

Unimplemented Copy Constructor.

---

Member Function Documentation

virtual void makVrv::DtGeocentricGridLinesDrawer::drawGridLines

(

)

[virtual]

Main entry point - draw the geocentric grid lines.

virtual void makVrv::DtGeocentricGridLinesDrawer::setScale

(

double

scale

)

[virtual]

Set the current observer 2D scale.

virtual void makVrv::DtGeocentricGridLinesDrawer::setObserverPosition

(

const DtVector &

position

)

[virtual]

Set the observer position.

virtual void makVrv::DtGeocentricGridLinesDrawer::setChannelDimensions	(	int	startChannelX,
		int	startChannelY,
		int	endChannelX,
		int	endChannelY
	)		[virtual]

Override to set up expansion values.

Reimplemented from makVrv::DtGridLinesDrawer.

virtual void makVrv::DtGeocentricGridLinesDrawer::setupReferenceEllipsoid

(

)

[protected, virtual]

Set up a reference ellipsoid for the current coordinate system that can be reused for all geodetic coordinate objects.

virtual void makVrv::DtGeocentricGridLinesDrawer::setupTopoGeocTransforms

(

)

[protected, virtual]

Set up transforms between Geocentric and geodetic coordinates.

virtual bool makVrv::DtGeocentricGridLinesDrawer::pointVisible

(

const DtVector &

point

)

const [protected, virtual]

Determine if the geocentric point specified could be visible (ignoring the current observer orientation)

virtual void makVrv::DtGeocentricGridLinesDrawer::findPolarSpacing

(

)

[protected, virtual]

Determine the spacings to use when one of the poles is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::drawPolarLongitudeLines

(

)

[protected, virtual]

Draw the longitude lines when one of the poles is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::drawPolarLatitudeLines

(

)

[protected, virtual]

Draw the latitude lines when one of the poles is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::findLatLonWindowDimensions

(

)

[protected, virtual]

Find the range of longitude and latitude to draw lines over based on the window dimensions (and scale and observer position)

virtual void makVrv::DtGeocentricGridLinesDrawer::findSpacing

(

)

[protected, virtual]

Determine the spacings to use when neither pole is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::anchorAndOffsetLines

(

)

[protected, virtual]

find the correct starting point for longitude and latitude lines given the current spacing and offsets specified

virtual void makVrv::DtGeocentricGridLinesDrawer::drawLongitudeLines

(

)

[protected, virtual]

Draw the longitude lines when neither pole is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::drawLatitudeLines

(

)

[protected, virtual]

Draw the latitude lines when neither pole is visible.

virtual void makVrv::DtGeocentricGridLinesDrawer::createLabel	(	DtTextProxy *&	label,
		double	radians,
		bool	isLongitude
	)		const [protected, virtual]

Create a label.

virtual void makVrv::DtGeocentricGridLinesDrawer::destroyGridLines

(

)

[protected, virtual]

Destroy all grid lines.

virtual bool makVrv::DtGeocentricGridLinesDrawer::clip3D	(	const DtVector &	pointA,
		const DtVector &	pointB,
		DtVector &	clippedA,
		DtVector &	clippedB
	)		const [protected, virtual]

Returns false if A and B are beyond the clip plane.

True if either/both are not, and returns correctly clipped values

virtual void makVrv::DtGeocentricGridLinesDrawer::clearUnusedLinesAndLabels	(	int	index,
		GridLineVector &	lines,
		LabelArray &	labels
	)		[protected, virtual]

Deallocates all segments and labels for indices at and above the provided index in the provided GridLineVector.

virtual void makVrv::DtGeocentricGridLinesDrawer::clearUnusedSegments	(	int	index,
		GridLine &	line
	)		[protected, virtual]

Deallocates all line segments at and above the provided index in the provided GridLine.

virtual void makVrv::DtGeocentricGridLinesDrawer::destroyLinesAndLabels	(	GridLineVector &	lines,
		LabelArray &	labels
	)		[protected, virtual]

Deallocates all line segments and all labels in the GridLineVector and label arrays provided.

virtual void makVrv::DtGeocentricGridLinesDrawer::resizeLinesAndLabels	(	GridLineVector &	lines,
		LabelArray &	labels,
		int	numLines
	)		[protected, virtual]

Set the number of lines to draw in a frame Will resize /cleanup current memory allocations for lines and labels.

virtual bool makVrv::DtGeocentricGridLinesDrawer::drawLineSegment	(	DtLineSegment *&	segment,
		DtVector	start,
		DtVector	end,
		float *	colorArray,
		bool *	pass3D = 0
	)		[protected, virtual]

Draw a geocentric line segment, if its visible.

Will create if necessary. If the caller wants to know if its 3D-clipped, provide pass3D

virtual GridLine& makVrv::DtGeocentricGridLinesDrawer::getSegmentedLine	(	GridLineVector &	lines,
		int	index,
		int	numSegments
	)		[protected, virtual]

Returns the line from the line vector at the specified index with enough segment pointers allocated.

DtGeocentricGridLinesDrawer& makVrv::DtGeocentricGridLinesDrawer::operator=

(

const DtGeocentricGridLinesDrawer &

rhs

)

[private]

Unimplemented assignment operator.

---

Member Data Documentation

GridLineVector makVrv::DtGeocentricGridLinesDrawer::myLongitudeLines [protected]

GridLineVector makVrv::DtGeocentricGridLinesDrawer::myLatitudeLines [protected]

LabelArray makVrv::DtGeocentricGridLinesDrawer::myLongitudeLabels [protected]

LabelArray makVrv::DtGeocentricGridLinesDrawer::myLatitudeLabels [protected]

double makVrv::DtGeocentricGridLinesDrawer::myLatSpacing [protected]

double makVrv::DtGeocentricGridLinesDrawer::myLonSpacing [protected]

double makVrv::DtGeocentricGridLinesDrawer::myScale [protected]

unsigned int makVrv::DtGeocentricGridLinesDrawer::myChannelSize [protected]

DtVector makVrv::DtGeocentricGridLinesDrawer::myObserverPosition [protected]

double makVrv::DtGeocentricGridLinesDrawer::myObserverLatitude [protected]

double makVrv::DtGeocentricGridLinesDrawer::myObserverLongitude [protected]

int makVrv::DtGeocentricGridLinesDrawer::myChannelExpansionX [protected]

int makVrv::DtGeocentricGridLinesDrawer::myChannelExpansionY [protected]

DtVector makVrv::DtGeocentricGridLinesDrawer::myClipNormal [protected]

double makVrv::DtGeocentricGridLinesDrawer::myStartLat [protected]

double makVrv::DtGeocentricGridLinesDrawer::myEndLat [protected]

double makVrv::DtGeocentricGridLinesDrawer::myStartLon [protected]

double makVrv::DtGeocentricGridLinesDrawer::myEndLon [protected]

DtCoordTransform makVrv::DtGeocentricGridLinesDrawer::myGeocToTopoTransform [protected]

DtCoordTransform makVrv::DtGeocentricGridLinesDrawer::myTopoToGeocTransform [protected]

DtReferenceEllipsoid makVrv::DtGeocentricGridLinesDrawer::myReferenceEllipsoid [protected]

double makVrv::DtGeocentricGridLinesDrawer::myAnchoredStartLat [protected]

double makVrv::DtGeocentricGridLinesDrawer::myAnchoredEndLat [protected]

double makVrv::DtGeocentricGridLinesDrawer::myAnchoredStartLon [protected]

double makVrv::DtGeocentricGridLinesDrawer::myAnchoredEndLon [protected]

bool makVrv::DtGeocentricGridLinesDrawer::myLatCrossesPole [protected]

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

• include/vrvOsg/DtGeocentricGridLinesDrawer.h