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QSGriddedContour Class Reference

Dataset : Draws contours over gridded data. More...

#include <qscontour.h>

Inheritance diagram for QSGriddedContour:

[legend]List of all members.

Public Types
enum	Channels { XVector = 0, YVector = 1, Data = 2 }
Public Methods
	QSGriddedContour (QSAxes *parent, const char *name=0)
virtual	~QSGriddedContour ()
virtual ColumnType	columnType (int channel, int column) const
virtual QString	channelVariable (int channel) const
virtual void	loadStateFromStream (QDataStream &stream, QSObjectFactory *factory)
virtual void	saveStateToStream (QDataStream &stream, QSObjectFactory *factory)
Protected Methods
virtual bool	getAxisRange (QSAxis *axis, double &min, double &max)
virtual void	dataChanged (int channel=-1)
virtual void	allocRuntimeData ()
virtual void	freeRuntimeData ()
virtual int	triangles ()
virtual void	getTriangle (int number, QSPt3f pts[3], double level=-10.0)
virtual bool	getNeighbouringTriangle (int *number, int *edge)
virtual int	triangleAtPos (const QSPt2f &pos)
virtual QString	vertexInfo (int t, int v, QSPt2f &pos)
virtual void	drawGrid ()
virtual void	drawPoints ()
virtual bool	rectangleGrid () const
virtual void	getRectangle (int triangleNumber, QSPt3f pts[4])

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Detailed Description

Dataset : Draws contours over gridded data.

Data format is described in QSGriddedContour::Channels . See also QSAxes::plotAdd() .

Author:

Kamil Dobkowski

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Member Enumeration Documentation

enum QSGriddedContour::Channels

Descriptive names of data channels. See QSData::setMatrix(). Data contains Z values, XVector ( optional ) contains x coordinates of a grid, YVector ( optional ) contains y coordinates of a grid. cols(XVector) == cols(Data) and rows(YVector) == rows(Data), both vectors must be monotone.

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Constructor & Destructor Documentation

QSGriddedContour::QSGriddedContour (  QSAxes *    parent, const char *    name = 0 )

Destructor.

virtual QSGriddedContour::~QSGriddedContour (    )  [virtual]

Destructor.

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Member Function Documentation

virtual void QSGriddedContour::allocRuntimeData (    )  [protected, virtual]

Called from start(). Everyting which goes to start() may be put here. inits m_curr_driver, m_curr_dpi, m_csize, m_cpos fields with values taken from parent axes Reimplemented from QSContour.

virtual QString QSGriddedContour::channelVariable (  int    channel )  const [virtual]

Returns a variable name ( 'x', 'y', 'z', 'v' etc ) for use in formulas. Reimplemented from QSData.

virtual ColumnType QSGriddedContour::columnType (  int    channel, int    column )  const [virtual]

Metadata - type of the given column. It should be reimplemented in derived classes. Used to create editors in sheet Reimplemented from QSData.

virtual void QSGriddedContour::dataChanged (  int    channel = -1 )  [protected, virtual]

This function is called after data has changed by 'setMatrix' method. You should also call it by hand, when you have changed the data in any matrix. It informs derived classes to mark old max and min data values as invalid, and informs them that they should repaint themselves. Default implementation calls dataChanging( this, channel ), Reimplemented from QSData.

virtual void QSGriddedContour::drawGrid (    )  [protected, virtual]

Draw grid ( lines connecting data points ) Implements QSContour.

virtual void QSGriddedContour::drawPoints (    )  [protected, virtual]

Draw point marks Implements QSContour.

virtual void QSGriddedContour::freeRuntimeData (    )  [protected, virtual]

Called from end().Everyting which goes to end() may be put here. Reimplemented from QSContour.

virtual bool QSGriddedContour::getAxisRange (  QSAxis *    axis, double &    min, double &    max )  [protected, virtual]

Must be reimplemented and return data range on each axis or false when no data is set. This functions is always called outside 'start()' and 'end()' ! Reimplemented from QSPlot.

virtual bool QSGriddedContour::getNeighbouringTriangle (  int *    number, int *    edge )  [protected, virtual]

Returns if there is a neighbouring triangle. In 'number' and 'edge' returns a neighbouring triangle and edge of triangle 'number' and edge 'edge'. Implements QSContour.

virtual void QSGriddedContour::getRectangle (  int    triangleNumber, QSPt3f    pts[4] )  [protected, virtual]

Reimplement this to return rectangle coordinates if the contour is drawn over rectangle grid. The rectangleGrid() method should be reimplemented too in this case. Rectangles are assumed be divided into four triangles. Rectangle 0 contains triangles 0-3, rectangle 1 contains triangles 4-7 etc ... The function id provided for efficiency only. Whole rectangles ( four triangles ) will be processed in a single step during drawing. Reimplemented from QSContour.

virtual void QSGriddedContour::getTriangle (  int    number, QSPt3f    pts[3], double    level = -10.0 )  [protected, virtual]

Returns triangle number 'number'. The first edge is between pts[0] and pts[1] the second one is between pts[1] and pts[2] the third one is between pts[2] and pts[0] point z values must not be equal to level. If there is such point add EPS_VALUE to its z coordinate. see: getNeighboutingTriangle() Implements QSContour.

virtual void QSGriddedContour::loadStateFromStream (  QDataStream &    stream, QSObjectFactory *    factory )  [virtual]

Restores all graphics atributes Reimplemented from QSContour.

virtual bool QSGriddedContour::rectangleGrid (    )  const [inline, protected, virtual]

Reimplement this to return true if the contour is drawn over rectangle grid. The getRectangle() method should be reimplemented too in this case. Rectangles are assumed be divided into four triangles. Rectangle 0 contains triangles 0-3, rectangle 1 contains triangles 4-7 etc ... Reimplemented from QSContour.

virtual void QSGriddedContour::saveStateToStream (  QDataStream &    stream, QSObjectFactory *    factory )  [virtual]

Saves all graphics attributes Reimplemented from QSContour.

virtual int QSGriddedContour::triangleAtPos (  const QSPt2f &    pos )  [protected, virtual]

Returns a number of a triangle which contains the point 'pos' if any or -1. Used by 'isClicked' and 'posInfo' subroutines. Nothing really nessesary Implements QSContour.

virtual int QSGriddedContour::triangles (    )  [protected, virtual]

Returns a total number of triangles. Implements QSContour.

virtual QString QSGriddedContour::vertexInfo (  int    t, int    v, QSPt2f &    pos )  [protected, virtual]

Returns info about the vertex 'v' of the triangle 't'. Nothing really nessesary Implements QSContour.

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

• qscontour.h

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