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132 lines
4.6 KiB
C++
132 lines
4.6 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtk2DHistogramItem.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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// .NAME vtk2DHistogramItem - 2D histogram item.
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//
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// .SECTION Description
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//
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#ifndef vtkPlotHistogram2D_h
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#define vtkPlotHistogram2D_h
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#include "vtkChartsCoreModule.h" // For export macro
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#include "vtkPlot.h"
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#include "vtkSmartPointer.h" // Needed for SP ivars
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#include "vtkRect.h" // Needed for vtkRectf
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class vtkImageData;
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class vtkScalarsToColors;
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class VTKCHARTSCORE_EXPORT vtkPlotHistogram2D : public vtkPlot
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{
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public:
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vtkTypeMacro(vtkPlotHistogram2D, vtkPlot);
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virtual void PrintSelf(ostream &os, vtkIndent indent);
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// Description:
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// Creates a new object.
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static vtkPlotHistogram2D *New();
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// Description:
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// Perform any updates to the item that may be necessary before rendering.
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// The scene should take care of calling this on all items before their
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// Paint function is invoked.
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virtual void Update();
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// Description:
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// Paint event for the item, called whenever it needs to be drawn.
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virtual bool Paint(vtkContext2D *painter);
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// Description:
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// Set the input, we are expecting a vtkImageData with just one component,
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// this would normally be a float or a double. It will be passed to the other
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// functions as a double to generate a color.
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virtual void SetInputData(vtkImageData *data, vtkIdType z = 0);
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virtual void SetInputData(vtkTable*) { }
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virtual void SetInputData(vtkTable*, const vtkStdString&, const vtkStdString&) { }
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// Description:
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// Get the input table used by the plot.
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vtkImageData * GetInputImageData();
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// Description:
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// Set the color transfer function that will be used to generate the 2D
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// histogram.
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void SetTransferFunction(vtkScalarsToColors *transfer);
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// Description:
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// Get the color transfer function that is used to generate the histogram.
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vtkScalarsToColors * GetTransferFunction();
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virtual void GetBounds(double bounds[4]);
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virtual void SetPosition(const vtkRectf& pos);
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virtual vtkRectf GetPosition();
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//BTX
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// Description:
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// Generate and return the tooltip label string for this plot
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// The segmentIndex parameter is ignored.
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// The member variable TooltipLabelFormat can be set as a
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// printf-style string to build custom tooltip labels from,
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// and may contain:
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// An empty string generates the default tooltip labels.
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// The following case-sensitive format tags (without quotes) are recognized:
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// '%x' The X position of the histogram cell
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// '%y' The Y position of the histogram cell
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// '%v' The scalar value of the histogram cell
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// Note: the %i and %j tags are valid only if there is a 1:1 correspondence
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// between individual histogram cells and axis tick marks
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// '%i' The X axis tick label for the histogram cell
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// '%j' The Y axis tick label for the histogram cell
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// Any other characters or unrecognized format tags are printed in the
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// tooltip label verbatim.
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virtual vtkStdString GetTooltipLabel(const vtkVector2d &plotPos,
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vtkIdType seriesIndex,
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vtkIdType segmentIndex);
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// Description:
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// Function to query a plot for the nearest point to the specified coordinate.
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// Returns an index between 0 and (number of histogram cells - 1), or -1.
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// The index 0 is at cell x=0, y=0 of the histogram, and the index increases
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// in a minor fashon with x and in a major fashon with y.
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// The referent of "location" is set to the x and y integer indices of the
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// histogram cell.
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virtual vtkIdType GetNearestPoint(const vtkVector2f& point,
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const vtkVector2f& tolerance,
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vtkVector2f* location);
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protected:
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vtkPlotHistogram2D();
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~vtkPlotHistogram2D();
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// Description:
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// Where all the magic happens...
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void GenerateHistogram();
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vtkSmartPointer<vtkImageData> Input;
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vtkSmartPointer<vtkImageData> Output;
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vtkSmartPointer<vtkScalarsToColors> TransferFunction;
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vtkRectf Position;
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private:
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vtkPlotHistogram2D(const vtkPlotHistogram2D &); // Not implemented.
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void operator=(const vtkPlotHistogram2D &); // Not implemented.
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//ETX
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};
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#endif //vtkPlotHistogram2D_h
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