/usr/include/Wt/Chart/WScatterData is in libwt-dev 3.3.3+dfsg-4.1.
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/*
* Copyright (C) 2013 Emweb bvba, Leuven, Belgium.
*
* See the LICENSE file for terms of use.
*/
#ifndef CHART_SCATTERDATA_H
#define CHART_SCATTERDATA_H
#include <Wt/WModelIndex>
#include <Wt/Chart/WAbstractDataSeries3D>
#include <Wt/Chart/WCartesian3DChart>
namespace Wt {
class WMemoryResource;
namespace Chart {
/*! \class WScatterData
* \brief Class representing a collection of points for on a 3D chart.
*
* General information can be found at WAbstractDataSeries3D. The model should
* be structured as a table where every row represents a point. In the simplest
* case, there are three columns representing the x-, y- and z-values. By
* default, this is column 0 for X, column 1 for Y and column 2 for Z. It is
* also possible to provide an additional column containing information on the
* color for each point. The same is possible for the size. Color-information
* in the model should be present as a WColor.
*
* If these extra columns are not included, the MarkerBrushColorRole and
* MarkerScaleFactorRole can still be used to style individual points. These
* dataroles should be set on the values in the column containing the z-values.
*
* The figure below shows an upward spiral of points, with droplines enabled
* and a pointsize of 5 pixels.
*
* \image html spiral.png "An example of WScatterData"
*
* \ingroup charts
*/
class WT_API WScatterData : public WAbstractDataSeries3D {
public:
/*! \brief Constructor
*/
WScatterData(WAbstractItemModel *model);
/*! \brief Enables or disables droplines for all points.
*
* Enabling droplines will cause a line to be drawn from every point to the
* the ground-plane of the chart's plotcube. By default the droplines are
* disabled.
*
* \sa setDroplinesPen()
*/
void setDroplinesEnabled(bool enable = true);
/*! \brief Returns whether droplines are enabled.
*
* \sa setDroplinesEnabled(), setDroplinesPen()
*/
bool droplinesEnabled() const { return droplinesEnabled_; }
/*! \brief Sets the pen that is used to draw droplines.
*
* The default pen is a default constructed WPen.
*
* Note: only the width and color of the pen are used.
*
* \sa setDroplinesEnabled()
*/
void setDroplinesPen(const WPen &pen);
/*! \brief Returns the pen that is used to draw droplines.
*
* \sa setDroplinesEnabled(), setDroplinesPen()
*/
WPen droplinesPen() const { return droplinesPen_; }
/*! \brief Sets the column-index from the model that is used for the
* x-coordinate of all points.
*
* The default X column index is 0.
*/
void setXSeriesColumn(int columnNumber) { XSeriesColumn_ = columnNumber; }
/*! \brief Returns the column-index from the model that is used for the
* x-coordinate of all points.
*
* \sa setXSeriesColumn()
*/
int XSeriesColumn() const { return XSeriesColumn_; }
/*! \brief Sets the column-index from the model that is used for the
* y-coordinate of all points.
*
* The default X column index is 1.
*/
void setYSeriesColumn(int columnNumber) { YSeriesColumn_ = columnNumber; }
/*! \brief Returns the column-index from the model that is used for the
* y-coordinate of all points.
*
* \sa setYSeriesColumn()
*/
int YSeriesColumn() const { return YSeriesColumn_; }
/*! \brief Sets the column-index from the model that is used for the
* z-coordinate of all points.
*
* The default Z column index is 2.
*
* Note that this column is also used to check for a MarkerBrushColorRole
* and a MarkerScaleFactorRole is no color-column or size-column are set.
*
* \sa setColorColumn(), setSizeColumn()
*/
void setZSeriesColumn(int columnNumber) { ZSeriesColumn_ = columnNumber; }
/*! \brief Returns the column-index from the model that is used for the
* z-coordinate of all points.
*
* \sa setZSeriesColumn()
*/
int ZSeriesColumn() const { return ZSeriesColumn_; }
#ifndef WT_TARGET_JAVA
/*! \brief Configure a column in the model to be used for the color of the
* points.
*
* By default, the color-column is set to -1. This means there is no column
* which specifies color-values. Also, the basic mechanism of using the
* MarkerBrushColorRole (if present) is then active. The Z-seriescolumn is
* checked for the presence of this Role.
*
* /sa setZSeriesColumn()
*/
void setColorColumn(int columnNumber, ItemDataRole role = DisplayRole);
/*! \brief Configure a column in the model to be used for the size of the
* points.
*
* By default, the size-column is set to -1. This means there is no column
* which specifies size-values. Also, the basic mechanism of using the
* MarkerScaleFactorRole (if present) is then active. The Z-seriescolumn is
* checked for the presence of this Role.
*
* /sa setZSeriesColumn()
*/
void setSizeColumn(int columnNumber, ItemDataRole role = DisplayRole);
#else
void setColorColumn(int columnNumber, int role = DisplayRole);
void setSizeColumn(int columnNumber, int role = DisplayRole);
#endif
virtual double minimum(Axis axis) const;
virtual double maximum(Axis axis) const;
virtual void initializeGL() {}
virtual void paintGL() const;
virtual void updateGL();
virtual void resizeGL();
virtual void deleteAllGLResources();
private:
int countSimpleData() const;
void dataFromModel(FloatBuffer& simplePtsArray,
FloatBuffer& simplePtsSize,
FloatBuffer& coloredPtsArray,
FloatBuffer& coloredPtsSize,
FloatBuffer& coloredPtsColor);
void dropLineVertices(FloatBuffer& dataPoints,
FloatBuffer& verticesOUT);
void initShaders();
void findXRange() const;
void findYRange() const;
void findZRange() const;
int XSeriesColumn_;
int YSeriesColumn_;
int ZSeriesColumn_;
int colorColumn_;
#ifndef WT_TARGET_JAVA
ItemDataRole asColorRole_;
ItemDataRole asSizeRole_;
#else
int asColorRole_;
int asSizeRole_;
#endif
int sizeColumn_;
bool droplinesEnabled_;
WPen droplinesPen_;
mutable double xMin_, xMax_, yMin_, yMax_;
mutable bool xRangeCached_;
mutable bool yRangeCached_;
WGLWidget::Buffer vertexPosBuffer_, vertexSizeBuffer_;
WGLWidget::Buffer vertexPosBuffer2_, vertexSizeBuffer2_, vertexColorBuffer2_;
WGLWidget::Buffer lineVertBuffer_;
int vertexBufferSize_, vertexBuffer2Size_, lineVertBufferSize_;
WGLWidget::Texture colormapTexture_;
WGLWidget::Shader vertexShader_;
WGLWidget::Shader colVertexShader_;
WGLWidget::Shader linesVertShader_;
WGLWidget::Shader fragmentShader_;
WGLWidget::Shader colFragmentShader_;
WGLWidget::Shader linesFragShader_;
WGLWidget::Program shaderProgram_;
WGLWidget::Program colShaderProgram_;
WGLWidget::Program linesProgram_;
WGLWidget::AttribLocation posAttr_;
WGLWidget::AttribLocation posAttr2_;
WGLWidget::AttribLocation posAttrLines_;
WGLWidget::AttribLocation sizeAttr_;
WGLWidget::AttribLocation sizeAttr2_;
WGLWidget::AttribLocation colorAttr2_;
WGLWidget::UniformLocation mvMatrixUniform_;
WGLWidget::UniformLocation mvMatrixUniform2_;
WGLWidget::UniformLocation mvMatrixUniform3_;
WGLWidget::UniformLocation pMatrixUniform_;
WGLWidget::UniformLocation pMatrixUniform2_;
WGLWidget::UniformLocation pMatrixUniform3_;
WGLWidget::UniformLocation cMatrixUniform_;
WGLWidget::UniformLocation cMatrixUniform2_;
WGLWidget::UniformLocation cMatrixUniform3_;
WGLWidget::UniformLocation lineColorUniform_;
WGLWidget::UniformLocation samplerUniform_;
WGLWidget::UniformLocation offsetUniform_;
WGLWidget::UniformLocation scaleFactorUniform_;
};
}
}
#endif
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