VTransferFunction2D Class Reference

#include <VTransferFunction2D.h>

List of all members.

Public Member Functions

 VTransferFunction2D ()
 ~VTransferFunction2D ()
void reinit ()
void draw2d ()
void setHistogram2D (unsigned char *volumeHistogram2d)
vTransferFunction2DPoint getTransferFunctionPoint (float density, float gmag)
vTransferFunctionWannabeTriangle getTransferFunction2dTriangle (float density, float gmag)
VVector transferFunctionPointInRange (float selectedDensity, float gmag, float range)
void addTransferFunctionPoint (vTransferFunction2DPoint newPoint)
void addTransferFunctionPoint (vTransferFunctionWannabeTriangle t, vTransferFunction2DPoint newPoint)
void removeTransferFunctionPoint (float density, float gmag, float tres)
int findIndexTransferFunctionPoint (float density, float gmag, float tres)
void changeTriangleSize (int index, float offsetw, float offseth)
void changeTriangleSkew (int index, float skew)
void changePointColor (float density, float gmag, VVector color, float a, float tres)
void changePointPosition (int index, float newx, float newy)
std::vector
< vTransferFunctionWannabeTriangle > 		getFullTransferFunction ()
unsigned int getGLHandle ()
void setMainCanvas (QVolRendCanvas *maincanvas)
bool load (std::string filename)
bool save (std::string filename)
void clear ()
void renderTest ()

Private Member Functions

void generateDisplayList2D ()
void interpolateTransferTriangles ()
double round (double Zahl, int Stellen)

Private Attributes

std::vector
< vTransferFunction2DPoint > 		m_FuncControlPoints
std::vector
< vTransferFunctionWannabeTriangle > 		m_FuncControlTriangles
unsigned char * m_VolumeHistogram2D
unsigned int m_VolumeHistogramDisplayList2D
unsigned int m_TransferFunction2DHandle
unsigned int m_Histogram2DTextureHandle
bool m_hasChanged
QVolRendCanvas * m_MainCanvas
VFramebufferObject * m_FramebufferObject

Detailed Description

class representing a Transferfunction. includes Histogram

Definition at line 100 of file VTransferFunction2D.h.

Constructor & Destructor Documentation

VTransferFunction2D::VTransferFunction2D (  )  [inline]

default constructor

Definition at line 107 of file VTransferFunction2D.h.

VTransferFunction2D::~VTransferFunction2D (  ) 

default destructor

Definition at line 6 of file VTransferFunction2D.cpp.

References m_MainCanvas, m_VolumeHistogram2D, and m_VolumeHistogramDisplayList2D.

Member Function Documentation

void VTransferFunction2D::reinit (  ) 

resets the 2D Transferfunction

Definition at line 26 of file VTransferFunction2D.cpp.

Referenced by setHistogram2D().

void VTransferFunction2D::draw2d (  ) 

draws the histogram

Definition at line 72 of file VTransferFunction2D.cpp.

References vNormal2DPoint::alpha, VVector::getX(), VVector::getY(), VVector::getZ(), vTransferFunction2DPoint::m_Color, vTransferFunction2DPoint::m_density, m_FuncControlPoints, m_FuncControlTriangles, vTransferFunction2DPoint::m_gmag, m_VolumeHistogramDisplayList2D, vTransferFunctionWannabeTriangle::point1, vTransferFunctionWannabeTriangle::point2, vTransferFunctionWannabeTriangle::point3, vTransferFunctionWannabeTriangle::point4, vNormal2DPoint::rgb, vNormal2DPoint::x, and vNormal2DPoint::y.

Referenced by QTFCanvas::paintGL().

void VTransferFunction2D::setHistogram2D ( unsigned char *  volumeHistogram2d  ) 

sets the Pointer to the data where the histogram is stored

Parameters:
volumeHistogram2d char Pointer to the histogram

Definition at line 361 of file VTransferFunction2D.cpp.

References clear(), generateDisplayList2D(), m_Histogram2DTextureHandle, m_VolumeHistogram2D, and reinit().

Referenced by QTFCanvas::setHistogram().

vTransferFunction2DPoint VTransferFunction2D::getTransferFunctionPoint ( float  density,
float  gmag 
)

returns the Point at a given Density and gradient magnitude

Parameters:
density Density of Point
gmag GradientMagnitude of Point
Returns:
VTransferFunction2DPoint

vTransferFunctionWannabeTriangle VTransferFunction2D::getTransferFunction2dTriangle ( float  density,
float  gmag 
)

returns the Triangle at a given Density and gradient magnitude

Parameters:
density Density of Point
gmag GradientMagnitude of Point
Returns:
vTransferFunctionWannabeTriangle

VVector VTransferFunction2D::transferFunctionPointInRange ( float  selectedDensity,
float  gmag,
float  range 
)

returns a VVector if point is in range

Parameters:
selectedDensity density where to look for
gmag Gradient Magnitude
range searchrange
Returns:
VVector

Definition at line 204 of file VTransferFunction2D.cpp.

Referenced by QTFCanvas::mouseClickEvent().

void VTransferFunction2D::addTransferFunctionPoint ( vTransferFunction2DPoint  newPoint  ) 

adds a new TransferfunctionPoint

Parameters:
newPoint new Point in TF

Definition at line 168 of file VTransferFunction2D.cpp.

References vNormal2DPoint::alpha, vTransferFunction2DPoint::m_Alpha, vTransferFunction2DPoint::m_Color, vTransferFunction2DPoint::m_density, m_FuncControlPoints, m_FuncControlTriangles, vTransferFunction2DPoint::m_gmag, m_hasChanged, vTransferFunctionWannabeTriangle::point1, vTransferFunctionWannabeTriangle::point2, vTransferFunctionWannabeTriangle::point3, vTransferFunctionWannabeTriangle::point4, vNormal2DPoint::rgb, vNormal2DPoint::x, and vNormal2DPoint::y.

Referenced by QTFCanvas::mouseClickEvent().

void VTransferFunction2D::addTransferFunctionPoint ( vTransferFunctionWannabeTriangle  t,
vTransferFunction2DPoint  newPoint 
)

adds a new TransferfunctionPoint

Parameters:
t vTransferFunctionWannabeTriangle
newPoint new Point

Definition at line 210 of file VTransferFunction2D.cpp.

References m_FuncControlPoints, m_FuncControlTriangles, and m_hasChanged.

void VTransferFunction2D::removeTransferFunctionPoint ( float  density,
float  gmag,
float  tres 
)

removes a point with given values

Parameters:
density given density of Point
gmag Gradient Magnitude of point
tres threshold

Definition at line 217 of file VTransferFunction2D.cpp.

References m_FuncControlPoints, m_FuncControlTriangles, and m_hasChanged.

Referenced by QTFCanvas::mouseDoubleClickEvent().

int VTransferFunction2D::findIndexTransferFunctionPoint ( float  density,
float  gmag,
float  tres 
)

gets the index for a certain point

Parameters:
density given density of possible point
gmag Gradient magnitude of Point
tres searchthreshold

Definition at line 310 of file VTransferFunction2D.cpp.

References m_FuncControlPoints.

Referenced by QTFCanvas::mouseMoveEvent().

void VTransferFunction2D::changeTriangleSize ( int  index,
float  offsetw,
float  offseth 
)

changes the size of a Triangle

Parameters:
index of triangle
offsetw offset in width
offseth offset in height

Definition at line 271 of file VTransferFunction2D.cpp.

References m_FuncControlTriangles, and m_hasChanged.

Referenced by QTFCanvas::mouseMoveEvent().

void VTransferFunction2D::changeTriangleSkew ( int  index,
float  skew 
)

changes the skew of the Triangle

Parameters:
index of triangle
skew new skew of triangle

Definition at line 297 of file VTransferFunction2D.cpp.

References m_FuncControlTriangles, and m_hasChanged.

Referenced by QTFCanvas::mouseMoveEvent().

void VTransferFunction2D::changePointColor ( float  density,
float  gmag,
VVector  color,
float  a,
float  tres 
)

changes the color of a given Point

Parameters:
density Density of Point
gmag Gradient Magnitude of Point
color new Color
a new Alpha
tres search treshold

Definition at line 242 of file VTransferFunction2D.cpp.

References m_FuncControlPoints, m_FuncControlTriangles, and m_hasChanged.

Referenced by QTFCanvas::mouseDoubleClickEvent().

void VTransferFunction2D::changePointPosition ( int  index,
float  newx,
float  newy 
)

changes the position of a given triangles

Parameters:
index index of triangle
newx new Density
newy new Gradient Magnitude

Definition at line 327 of file VTransferFunction2D.cpp.

References m_FuncControlPoints, m_FuncControlTriangles, and m_hasChanged.

Referenced by QTFCanvas::mouseMoveEvent().

std::vector<vTransferFunctionWannabeTriangle> VTransferFunction2D::getFullTransferFunction (  )  [inline]

returns a vector with the Full Transferfunction

Returns:
vector containing all vTransferFunctionWannabeTriangle objects

Definition at line 230 of file VTransferFunction2D.h.

References interpolateTransferTriangles(), m_FuncControlTriangles, and m_hasChanged.

unsigned int VTransferFunction2D::getGLHandle (  )  [inline]

gets the OpenGl Handle of the Transferfunction

Returns:
unsigned int containing the handle

Definition at line 243 of file VTransferFunction2D.h.

References VFramebufferObject::getTextureHandle(), interpolateTransferTriangles(), m_FramebufferObject, and m_hasChanged.

Referenced by QVolRendCanvas::paintGL().

void VTransferFunction2D::setMainCanvas ( QVolRendCanvas *  maincanvas  )  [inline]

sets a Pointer to the main canvas

Parameters:
maincanvas Pointer to main Canvas

Definition at line 257 of file VTransferFunction2D.h.

References m_MainCanvas.

Referenced by QVolRendCanvas::setTransferFunction2DPtr().

bool VTransferFunction2D::load ( std::string  filename  ) 

loads a Transferfunction with the given name

Parameters:
filename filepath to Tf File

Definition at line 481 of file VTransferFunction2D.cpp.

References vTransferFunctionWannabeTriangle::a_offseth, vTransferFunctionWannabeTriangle::a_offsetw, vTransferFunctionWannabeTriangle::a_skew, vNormal2DPoint::alpha, vTransferFunction2DPoint::m_Alpha, vTransferFunction2DPoint::m_Color, vTransferFunction2DPoint::m_density, m_FuncControlPoints, m_FuncControlTriangles, vTransferFunction2DPoint::m_gmag, m_hasChanged, vTransferFunctionWannabeTriangle::point1, vTransferFunctionWannabeTriangle::point2, vTransferFunctionWannabeTriangle::point3, vTransferFunctionWannabeTriangle::point4, vNormal2DPoint::rgb, VVector::setX(), VVector::setY(), VVector::setZ(), vNormal2DPoint::x, and vNormal2DPoint::y.

Referenced by QTFCanvas::loadTf().

bool VTransferFunction2D::save ( std::string  filename  ) 

saves the current Transferfunction

Parameters:
filename filenname on disc

Definition at line 571 of file VTransferFunction2D.cpp.

References vTransferFunctionWannabeTriangle::a_offseth, vTransferFunctionWannabeTriangle::a_offsetw, vTransferFunctionWannabeTriangle::a_skew, vNormal2DPoint::alpha, VVector::getX(), VVector::getY(), VVector::getZ(), vTransferFunction2DPoint::m_Alpha, vTransferFunction2DPoint::m_Color, vTransferFunction2DPoint::m_density, m_FuncControlPoints, m_FuncControlTriangles, vTransferFunction2DPoint::m_gmag, vTransferFunctionWannabeTriangle::point1, vTransferFunctionWannabeTriangle::point2, vTransferFunctionWannabeTriangle::point3, vTransferFunctionWannabeTriangle::point4, vNormal2DPoint::rgb, vNormal2DPoint::x, and vNormal2DPoint::y.

Referenced by QTFCanvas::saveTf().

void VTransferFunction2D::clear (  )  [inline]

resets the tf

Definition at line 277 of file VTransferFunction2D.h.

References m_FuncControlPoints, m_FuncControlTriangles, m_hasChanged, and m_TransferFunction2DHandle.

Referenced by setHistogram2D().

void VTransferFunction2D::renderTest (  )  [inline]

for testredering the tf

Definition at line 288 of file VTransferFunction2D.h.

References m_FramebufferObject, and VFramebufferObject::renderToLowerRightQuad().

void VTransferFunction2D::generateDisplayList2D (  )  [private]

generates the DisplayList

Definition at line 389 of file VTransferFunction2D.cpp.

References m_VolumeHistogramDisplayList2D.

Referenced by setHistogram2D().

void VTransferFunction2D::interpolateTransferTriangles (  )  [private]

interpolates the Transferfunction Points

Definition at line 418 of file VTransferFunction2D.cpp.

References vNormal2DPoint::alpha, VFramebufferObject::bind(), VFramebufferObject::getFboHandle(), VVector::getX(), VVector::getY(), VVector::getZ(), VFramebufferObject::init(), m_FramebufferObject, m_FuncControlTriangles, m_hasChanged, vTransferFunctionWannabeTriangle::point1, vTransferFunctionWannabeTriangle::point2, vTransferFunctionWannabeTriangle::point3, vTransferFunctionWannabeTriangle::point4, vNormal2DPoint::rgb, VFramebufferObject::unbind(), vNormal2DPoint::x, and vNormal2DPoint::y.

Referenced by getFullTransferFunction(), and getGLHandle().

double VTransferFunction2D::round ( double  Zahl,
int  Stellen 
) [inline, private]

method for rounding a double to certain steps

Parameters:
Zahl the value to round
Stellen numbers behind the coma
Returns:
double containing the rounded value

Definition at line 311 of file VTransferFunction2D.h.

Member Data Documentation

std::vector<vTransferFunction2DPoint> VTransferFunction2D::m_FuncControlPoints [private]

Control Points of the Transferfunction.

Definition at line 317 of file VTransferFunction2D.h.

Referenced by addTransferFunctionPoint(), changePointColor(), changePointPosition(), clear(), draw2d(), findIndexTransferFunctionPoint(), load(), removeTransferFunctionPoint(), and save().

std::vector<vTransferFunctionWannabeTriangle> VTransferFunction2D::m_FuncControlTriangles [private]

Control Triangles of the Transferfunction.

Definition at line 318 of file VTransferFunction2D.h.

Referenced by addTransferFunctionPoint(), changePointColor(), changePointPosition(), changeTriangleSize(), changeTriangleSkew(), clear(), draw2d(), getFullTransferFunction(), interpolateTransferTriangles(), load(), removeTransferFunctionPoint(), and save().

unsigned char* VTransferFunction2D::m_VolumeHistogram2D [private]

Pointer to the 2D Volume Histogram.

Definition at line 320 of file VTransferFunction2D.h.

Referenced by setHistogram2D(), and ~VTransferFunction2D().

unsigned int VTransferFunction2D::m_VolumeHistogramDisplayList2D [private]

Handle for OpenGl DisplayList used when drawing the 2D Histogram.

Definition at line 322 of file VTransferFunction2D.h.

Referenced by draw2d(), generateDisplayList2D(), and ~VTransferFunction2D().

unsigned int VTransferFunction2D::m_TransferFunction2DHandle [private]

Handle to Texture where Transferfunction is Stored.

Definition at line 323 of file VTransferFunction2D.h.

Referenced by clear().

unsigned int VTransferFunction2D::m_Histogram2DTextureHandle [private]

Handle to Texture where 2D Histogram is Stored.

Definition at line 324 of file VTransferFunction2D.h.

Referenced by setHistogram2D().

bool VTransferFunction2D::m_hasChanged [private]

If Transferfunction has changed since last Render to texture.

Definition at line 325 of file VTransferFunction2D.h.

Referenced by addTransferFunctionPoint(), changePointColor(), changePointPosition(), changeTriangleSize(), changeTriangleSkew(), clear(), getFullTransferFunction(), getGLHandle(), interpolateTransferTriangles(), load(), and removeTransferFunctionPoint().

QVolRendCanvas* VTransferFunction2D::m_MainCanvas [private]

Pointer to Main Canvas.

Definition at line 326 of file VTransferFunction2D.h.

Referenced by setMainCanvas(), and ~VTransferFunction2D().

VFramebufferObject* VTransferFunction2D::m_FramebufferObject [private]

FBO containing the TransferfunctionTexture.

Definition at line 328 of file VTransferFunction2D.h.

Referenced by getGLHandle(), interpolateTransferTriangles(), and renderTest().

The documentation for this class was generated from the following files:
Generated on Wed Dec 5 05:15:10 2007 for VolRendering by  doxygen 1.5.4