FlowGeometry Class Reference

class for handling the geometry == rectangular grids organized in vertices and cells More...

#include <FlowGeometry.h>

List of all members.

Public Member Functions
	FlowGeometry ()
	~FlowGeometry ()
	deletes the allocated geometry storage
bool	getInterpolationAt (flowvec3 pos, int *vtxID, float *coef)
	Returns true if inside. Stores the vertex indices and interpolation weights for the given position in the arrays.
bool	readFromFile (char *header, FILE *fp, bool bigEndian)
	reads the geometry gris data from a file
int	getDimX ()
	returns the number of vertices in X dimension
int	getDimY ()
	returns the number of vertices in Y dimension
int	getDimZ ()
	returns the number of vertices in Z dimension, is always 1
float	getMinX ()
	returns the minimum in the X dimension
float	getMaxX ()
	returns the maximum in the X dimension
float	getMinY ()
	returns the minimum in the Y dimension
float	getMaxY ()
	returns the maximum in the Y dimension
int	getRightNeigh (int vtxID)
	returns the vertex ID of the neighbour on its right
int	getTopNeigh (int vtxID)
	returns the vertex ID of the neighbour on its top
int	getLeftNeigh (int vtxID)
	returns the vertex ID of the neighbour on its left
int	getBottomNeigh (int vtxID)
	returns the vertex ID of the neighbour on its bottom
flowvec3	normalizeCoords (flowvec3 pos)
	compression of coordinates in each dimension separately, returns values scaled to <0,1>
flowvec3	unNormalizeCoords (flowvec3 pos)
	inverts the compression. From values of <0,1> it restores the real geometrical coordinates
bool	getIsFlipped ()
	returns if the geometry is flipped or not
int	getNearestVtxNaively (flowvec3 pos)
	a very slow and dumb routine, that finds the nearest vertex to the given position
int	getNearestVtx (flowvec3 pos)
	a very fast and intelligent routine, that finds the nearest vertex to the given position in log(n) time
flowvec3	getPos (int vtxID)
	FlowGeometry ()
	~FlowGeometry ()
	deletes the allocated geometry storage
bool	getInterpolationAt (flowvec3 pos, int *vtxID, float *coef)
	Returns true if inside. Stores the vertex indices and interpolation weights for the given position in the arrays.
bool	readFromFile (char *header, FILE *fp, bool bigEndian)
	reads the geometry gris data from a file
int	getDimX ()
	returns the number of vertices in X dimension
int	getDimY ()
	returns the number of vertices in Y dimension
int	getDimZ ()
	returns the number of vertices in Z dimension, is always 1
float	getMinX ()
	returns the minimum in the X dimension
float	getMaxX ()
	returns the maximum in the X dimension
float	getMinY ()
	returns the minimum in the Y dimension
float	getMaxY ()
	returns the maximum in the Y dimension
int	getRightNeigh (int vtxID)
	returns the vertex ID of the neighbour on its right
int	getTopNeigh (int vtxID)
	returns the vertex ID of the neighbour on its top
int	getLeftNeigh (int vtxID)
	returns the vertex ID of the neighbour on its left
int	getBottomNeigh (int vtxID)
	returns the vertex ID of the neighbour on its bottom
flowvec3	normalizeCoords (flowvec3 pos)
	compression of coordinates in each dimension separately, returns values scaled to <0,1>
flowvec3	unNormalizeCoords (flowvec3 pos)
	inverts the compression. From values of <0,1> it restores the real geometrical coordinates
bool	getIsFlipped ()
int	getNearestVtxNaively (flowvec3 pos)
	a very slow and dumb routine, that finds the nearest vertex to the given position
int	getNearestVtx (flowvec3 pos)
flowvec3	getPos (int vtxID)
Private Member Functions
int	getVtx (int x, int y)
	returns general vtxID for the vertex array indexes
int	getVtxX (int vtxID)
	returns X index for the general vtxID
int	getVtxY (int vtxID)
	returns Y index for the general vtxID
int	getXYvtx (flowvec3 pos)
	returns X index of the last vertex lying left to the position x and the Y index of the last vertex lying under the position y
float	getPosX (int vtxID)
	returns the position of the vertex
float	getPosY (int vtxID)
	returns the y position of the vertex
int	getVtx (int x, int y)
	returns general vtxID for the vertex array indexes
int	getVtxX (int vtxID)
	returns X index for the general vtxID
int	getVtxY (int vtxID)
	returns Y index for the general vtxID
int	getXYvtx (flowvec3 pos)
	returns X index of the last vertex lying left to the position x and the Y index of the last vertex lying under the position y
float	getPosX (int vtxID)
	returns the position of the vertex
float	getPosY (int vtxID)
	returns the y position of the vertex
Private Attributes
int	dim [3]
	resolution of the data for the dimensions X, Y
flowvec3	boundaryMin
	minimum boundary values for the dataset geometry sotred as {minX, minY)
flowvec3	boundaryMax
	maximum boundary values for the dataset geometry sotred as (maxX, maxY)
flowvec3	boundarySize
	boundary sizes for the dataset geometry sotred as (maX - minX, maxY - minY)
float	deltaX
float	deltaY
int *	surroundingIndices
bool	xIndexFound
int	xOffsetLeft
int	xOffsetRight
bool	yIndexFound
int	yOffsetUp
int	yOffsetDown
float	yDist
float	xDist
int	actIndex
int	minIndexX
int	maxIndexX
int	middleIndexX
int	minIndexY
int	maxIndexY
int	middleIndexY
float	dist
int	closest
float	newd
flowvec3 *	geometryData
	Storage for the geometry.
bool	isFlipped
	indicates whether the x and y axes have to be swaped
Friends
class	FlowData

---

Detailed Description

class for handling the geometry == rectangular grids organized in vertices and cells

---

Constructor & Destructor Documentation

FlowGeometry::FlowGeometry

(

)

FlowGeometry::~FlowGeometry

(

)

deletes the allocated geometry storage

FlowGeometry::FlowGeometry

(

)

FlowGeometry::~FlowGeometry

(

)

deletes the allocated geometry storage

---

Member Function Documentation

int FlowGeometry::getBottomNeigh

(

int

vtxID

)

returns the vertex ID of the neighbour on its bottom

int FlowGeometry::getBottomNeigh

(

int

vtxID

)

returns the vertex ID of the neighbour on its bottom

int FlowGeometry::getDimX

(

)

returns the number of vertices in X dimension

int FlowGeometry::getDimX

(

)

returns the number of vertices in X dimension

int FlowGeometry::getDimY

(

)

returns the number of vertices in Y dimension

int FlowGeometry::getDimY

(

)

returns the number of vertices in Y dimension

int FlowGeometry::getDimZ

(

)

returns the number of vertices in Z dimension, is always 1

int FlowGeometry::getDimZ

(

)

returns the number of vertices in Z dimension, is always 1

bool FlowGeometry::getInterpolationAt	(	flowvec3	pos,
		int *	vtxID,
		float *	coef
	)

Returns true if inside. Stores the vertex indices and interpolation weights for the given position in the arrays.

Stores the indexes and weights of vertices surrounding the given position. This information can be used later on for interpolation of channel values.

Parameters:

	pos	geometrical position for the lookup
	vtxID	list of surrounding vertices (given by vertex ID)
	coef	list of surrounding vertex weights (sum == 1.0)

Returns:

true if the given position is inside of the geometrical boundaries

bool FlowGeometry::getInterpolationAt	(	flowvec3	pos,
		int *	vtxID,
		float *	coef
	)

Returns true if inside. Stores the vertex indices and interpolation weights for the given position in the arrays.

Stores the indexes and weights of vertices surrounding the given position. This information can be used later on for interpolation of channel values.

Parameters:

	pos	geometrical position for the lookup
	vtxID	list of surrounding vertices (given by vertex ID)
	coef	list of surrounding vertex weights (sum == 1.0)

Returns:

true if the given position is inside of the geometrical boundaries

bool FlowGeometry::getIsFlipped

(

)

bool FlowGeometry::getIsFlipped

(

)

returns if the geometry is flipped or not

int FlowGeometry::getLeftNeigh

(

int

vtxID

)

returns the vertex ID of the neighbour on its left

int FlowGeometry::getLeftNeigh

(

int

vtxID

)

returns the vertex ID of the neighbour on its left

float FlowGeometry::getMaxX

(

)

returns the maximum in the X dimension

float FlowGeometry::getMaxX

(

)

[inline]

returns the maximum in the X dimension

float FlowGeometry::getMaxY

(

)

returns the maximum in the Y dimension

float FlowGeometry::getMaxY

(

)

[inline]

returns the maximum in the Y dimension

float FlowGeometry::getMinX

(

)

returns the minimum in the X dimension

float FlowGeometry::getMinX

(

)

[inline]

returns the minimum in the X dimension

float FlowGeometry::getMinY

(

)

returns the minimum in the Y dimension

float FlowGeometry::getMinY

(

)

[inline]

returns the minimum in the Y dimension

int FlowGeometry::getNearestVtx

(

flowvec3

pos

)

int FlowGeometry::getNearestVtx

(

flowvec3

pos

)

a very fast and intelligent routine, that finds the nearest vertex to the given position in log(n) time

int FlowGeometry::getNearestVtxNaively

(

flowvec3

pos

)

a very slow and dumb routine, that finds the nearest vertex to the given position

int FlowGeometry::getNearestVtxNaively

(

flowvec3

pos

)

a very slow and dumb routine, that finds the nearest vertex to the given position

flowvec3 FlowGeometry::getPos

(

int

vtxID

)

flowvec3 FlowGeometry::getPos

(

int

vtxID

)

[inline]

float FlowGeometry::getPosX

(

int

vtxID

)

[private]

returns the position of the vertex

returns the x position of the vertex

float FlowGeometry::getPosX

(

int

vtxID

)

[inline, private]

returns the position of the vertex

returns the x position of the vertex

float FlowGeometry::getPosY

(

int

vtxID

)

[private]

returns the y position of the vertex

float FlowGeometry::getPosY

(

int

vtxID

)

[inline, private]

returns the y position of the vertex

int FlowGeometry::getRightNeigh

(

int

vtxID

)

returns the vertex ID of the neighbour on its right

int FlowGeometry::getRightNeigh

(

int

vtxID

)

returns the vertex ID of the neighbour on its right

int FlowGeometry::getTopNeigh

(

int

vtxID

)

returns the vertex ID of the neighbour on its top

int FlowGeometry::getTopNeigh

(

int

vtxID

)

returns the vertex ID of the neighbour on its top

int FlowGeometry::getVtx	(	int	x,
		int	y
	)			[private]

returns general vtxID for the vertex array indexes

int FlowGeometry::getVtx	(	int	x,
		int	y
	)			[private]

returns general vtxID for the vertex array indexes

int FlowGeometry::getVtxX

(

int

vtxID

)

[private]

returns X index for the general vtxID

int FlowGeometry::getVtxX

(

int

vtxID

)

[private]

returns X index for the general vtxID

int FlowGeometry::getVtxY

(

int

vtxID

)

[private]

returns Y index for the general vtxID

int FlowGeometry::getVtxY

(

int

vtxID

)

[private]

returns Y index for the general vtxID

int FlowGeometry::getXYvtx

(

flowvec3

pos

)

[private]

returns X index of the last vertex lying left to the position x and the Y index of the last vertex lying under the position y

int FlowGeometry::getXYvtx

(

flowvec3

pos

)

[private]

returns X index of the last vertex lying left to the position x and the Y index of the last vertex lying under the position y

flowvec3 FlowGeometry::normalizeCoords

(

flowvec3

pos

)

compression of coordinates in each dimension separately, returns values scaled to <0,1>

flowvec3 FlowGeometry::normalizeCoords

(

flowvec3

pos

)

compression of coordinates in each dimension separately, returns values scaled to <0,1>

bool FlowGeometry::readFromFile	(	char *	header,
		FILE *	fp,
		bool	bigEndian
	)

reads the geometry gris data from a file

bool FlowGeometry::readFromFile	(	char *	header,
		FILE *	fp,
		bool	bigEndian
	)

reads the geometry gris data from a file

flowvec3 FlowGeometry::unNormalizeCoords

(

flowvec3

pos

)

inverts the compression. From values of <0,1> it restores the real geometrical coordinates

flowvec3 FlowGeometry::unNormalizeCoords

(

flowvec3

pos

)

inverts the compression. From values of <0,1> it restores the real geometrical coordinates

---

Friends And Related Function Documentation

FlowData [friend]

---

Member Data Documentation

int FlowGeometry::actIndex [private]

flowvec3 FlowGeometry::boundaryMax [private]

maximum boundary values for the dataset geometry sotred as (maxX, maxY)

flowvec3 FlowGeometry::boundaryMin [private]

minimum boundary values for the dataset geometry sotred as {minX, minY)

flowvec3 FlowGeometry::boundarySize [private]

boundary sizes for the dataset geometry sotred as (maX - minX, maxY - minY)

int FlowGeometry::closest [private]

float FlowGeometry::deltaX [private]

float FlowGeometry::deltaY [private]

int FlowGeometry::dim [private]

resolution of the data for the dimensions X, Y

float FlowGeometry::dist [private]

flowvec3 * FlowGeometry::geometryData [private]

Storage for the geometry.

bool FlowGeometry::isFlipped [private]

indicates whether the x and y axes have to be swaped

int FlowGeometry::maxIndexX [private]

int FlowGeometry::maxIndexY [private]

int FlowGeometry::middleIndexX [private]

int FlowGeometry::middleIndexY [private]

int FlowGeometry::minIndexX [private]

int FlowGeometry::minIndexY [private]

float FlowGeometry::newd [private]

int * FlowGeometry::surroundingIndices [private]

float FlowGeometry::xDist [private]

bool FlowGeometry::xIndexFound [private]

int FlowGeometry::xOffsetLeft [private]

int FlowGeometry::xOffsetRight [private]

float FlowGeometry::yDist [private]

bool FlowGeometry::yIndexFound [private]

int FlowGeometry::yOffsetDown [private]

int FlowGeometry::yOffsetUp [private]

---

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

• E:/Eigene Dateien/Michi/Studium/Semester7/Vis/LU/Beispiel2/FlowVis/FlowVis_2009_01_19_inkl_Texture/header/FlowGeometry.h
• E:/Eigene Dateien/Michi/Studium/Semester7/Vis/LU/Beispiel2/FlowVis/header/FlowGeometry.h
• E:/Eigene Dateien/Michi/Studium/Semester7/Vis/LU/Beispiel2/FlowVis/FlowVis_2009_01_19_inkl_Texture/src/FlowGeometry.cpp
• E:/Eigene Dateien/Michi/Studium/Semester7/Vis/LU/Beispiel2/FlowVis/src/FlowGeometry.cpp