Eigene Dateien/9.Semester/Visualisierung/LU/Volume_Renderer_dec05v2/Volume Renderer/ColorTransfer.cpp File Reference

#include "stdafx.h"
#include "ColorTransfer.h"
#include "find_roots.hpp"
#include <complex>

Functions
static void	setColor (int aLowerMark, int anUpperMark)
static void	setOpacity (int aLowerMark, int anUpperMark)
static void	setSplineColors ()
static void	setLinearColors ()
static void	setSplineOpacity ()
static Float_Color	getSplineInterpolatedColor (int aPosition)
static float	getSplineInterpolatedOpacity (int aPosition)
static double	getIntensityAtSplineTravelPosition (double aPos, int aBeforePrevNode, int aPrevNode, int aNextNode, int anAfterNextNode)
void	ColorTransfer::init ()
void	ColorTransfer::end ()
RGBAColor	ColorTransfer::getIntensity (int anIntensity)
void	ColorTransfer::removeColorMarker (int anIntensity)
void	ColorTransfer::removeOpacityMarker (int anIntensity)
void	ColorTransfer::addMarker (int anIntensity, Float_Color aColor)
void	ColorTransfer::addMarker (int anIntensity, float anOpacity)
std::map< int, Float_Color > *	ColorTransfer::getColorTransferPt ()
std::map< int, float > *	ColorTransfer::getOpacityTransferPt ()
void	ColorTransfer::useSpline (bool useSplines)
bool	ColorTransfer::splineIsUsed ()
void	ColorTransfer::useExactAlgorithm (bool useIt)
Variables
static std::map< int, Float_Color >	theColorTransfer
static std::map< int, float >	theOpacityTransfer
static RGBAColor *	theColors = NULL
static bool	useSplineInterpolation = false
static bool	useIntensitySearchPerStepSize = true
static int	theAllowedIterations = 1000
	maximum iteration length for spline - intensity position search
static int	theIterationNoToReduceStepSize = 25
	reduce the step legth (for intensity search) beginning at this iteration

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Function Documentation

static double getIntensityAtSplineTravelPosition	(	double	aPos,
		int	aBeforePrevNode,
		int	aPrevNode,
		int	aNextNode,
		int	anAfterNextNode
	)			[static]

calculates the intensity at a given position using a catmull-rom spline

Parameters:

	aPos	the relative position between the two nodes
	aBeforePrevNode	the node before the previous node
	aPrevNode	the previous node
	aNextNode	the next node
	anAfterNextNode	the node after the next node

Returns:

the intensity at the given position

static Float_Color getSplineInterpolatedColor

(

int

aPosition

)

[static]

calculates the color at a given intensity using a catmull-rom spline

Parameters:

aPosition

the intinsity value to calculate the color for

Returns:

the computed color

static float getSplineInterpolatedOpacity

(

int

aPosition

)

[static]

calculates the opacity at a given intensity using a catmull-rom spline

Parameters:

aPosition

the intinsity value to calculate the opacity for

Returns:

the computed opacity

static void setColor	(	int	aLowerMark,
		int	anUpperMark
	)			[static]

linearly computes all color values between given intensity values

Parameters:

	aLowerMark	the lower intensity value
	anUpperMark	the higher intensity value

static void setLinearColors

(

)

[static]

computes all color values using linear interpolation

static void setOpacity	(	int	aLowerMark,
		int	anUpperMark
	)			[static]

linearly computes all opacity values between given intensity values

Parameters:

	aLowerMark	the lower intensity value
	anUpperMark	the higher intensity value

static void setSplineColors

(

)

[static]

computes all color values using catmull-rom splines

static void setSplineOpacity

(

)

[static]

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Variable Documentation

int theAllowedIterations = 1000 [static]

maximum iteration length for spline - intensity position search

RGBAColor* theColors = NULL [static]

std::map<int, Float_Color> theColorTransfer [static]

int theIterationNoToReduceStepSize = 25 [static]

reduce the step legth (for intensity search) beginning at this iteration

std::map<int, float> theOpacityTransfer [static]

bool useIntensitySearchPerStepSize = true [static]

bool useSplineInterpolation = false [static]

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