FlowChannel Class Reference

Handles one scalar field of floats defined for each cell. More...

#include <FlowChannel.h>

Collaboration diagram for FlowChannel:

[legend]

List of all members.

Public Member Functions
	FlowChannel (FlowGeometry *g)
	~FlowChannel ()
void	setValue (int vtxID, float val)
	sets the value of the given vertex
void	copyValues (float *rawdata, int vtxSize, int offset)
	takes an array containing all attributes for a vertex and copies the j-th attribute to this channel
float	getValue (vec3 pos)
	returns the value at given position in data set coordinates (from 0 to dimX or dimY)
float	getValue (int vtxID)
	returns the value of the given vertex
float	getValueNormPos (vec3 pos)
	returns the value at given position in normalized coordinates for each dimension <0..1>
float	getValueNormPos (float x, float y)
	returns the value at given position in normalized coordinates for each dimension <0..1>
float	normalizeValue (float val)
	scales the value according to the channel minimim and maximum, so that it lies inside of <0,1>
float	getMin ()
	returns the minimum value found in the channel
float	getMax ()
	returns the maximum value found in the channel
float	getRange ()
	returns the range = max - min
Private Attributes
FlowGeometry *	geom
	reference to the geometry structure
float *	values
	channel data storage
float	minimum
	minimum value (of all cells in a single time step)
float	maximum
	maximum value (of all cells in a single time step)

---

Detailed Description

Handles one scalar field of floats defined for each cell.

More dimensional vectors are split into components. E.g. a 3D velocity vector gets stored in three FlowChannels. A FlowChannel stores data only from one time step, it is not aware of any time related information.

---

Constructor & Destructor Documentation

FlowChannel::FlowChannel

(

FlowGeometry *

g

)

FlowChannel::~FlowChannel

(

)

---

Member Function Documentation

void FlowChannel::copyValues	(	float *	rawdata,
		int	vtxSize,
		int	offset
	)

takes an array containing all attributes for a vertex and copies the j-th attribute to this channel

This methos is used by the loading of data sets.

Parameters:

	rawdata	data gained directly from the file, without any processing. It contains all channels for all cells. Please note, there is no time information considered here.
	vtxSize	number of channels per cell (incl. velocity vector size)
	offset	offset of the parameter loaded into this channel

float FlowChannel::getMax

(

)

returns the maximum value found in the channel

float FlowChannel::getMin

(

)

returns the minimum value found in the channel

float FlowChannel::getRange

(

)

returns the range = max - min

float FlowChannel::getValue

(

int

vtxID

)

returns the value of the given vertex

float FlowChannel::getValue

(

vec3

pos

)

returns the value at given position in data set coordinates (from 0 to dimX or dimY)

float FlowChannel::getValueNormPos	(	float	x,
		float	y
	)

returns the value at given position in normalized coordinates for each dimension <0..1>

float FlowChannel::getValueNormPos

(

vec3

pos

)

returns the value at given position in normalized coordinates for each dimension <0..1>

float FlowChannel::normalizeValue

(

float

val

)

scales the value according to the channel minimim and maximum, so that it lies inside of <0,1>

void FlowChannel::setValue	(	int	vtxID,
		float	val
	)

sets the value of the given vertex

---

Member Data Documentation

FlowGeometry* FlowChannel::geom [private]

reference to the geometry structure

float FlowChannel::maximum [private]

maximum value (of all cells in a single time step)

float FlowChannel::minimum [private]

minimum value (of all cells in a single time step)

float* FlowChannel::values [private]

channel data storage

---

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

• Desktop/Visualisuerung/Bsp2/FlowVisFramework/header/FlowChannel.h
• Desktop/Visualisuerung/Bsp2/FlowVisFramework/src/FlowChannel.cpp