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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtDataVisualization module.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the QtDataVisualization API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef Q3DBARSRENDERER_p_H
#define Q3DBARSRENDERER_p_H
#include "datavisualizationglobal_p.h"
#include "bars3dcontroller_p.h"
#include "abstract3drenderer_p.h"
#include "qbardataproxy.h"
#include "barrenderitem_p.h"
class QPoint;
class QSizeF;
class QOpenGLShaderProgram;
QT_DATAVISUALIZATION_BEGIN_NAMESPACE
class ShaderHelper;
class ObjectHelper;
class LabelItem;
class Q3DScene;
class QT_DATAVISUALIZATION_EXPORT Bars3DRenderer : public Abstract3DRenderer
{
Q_OBJECT
private:
// TODO: Filter to the set of attributes to be moved to the model object.
Bars3DController *m_controller;
// Cached state based on emitted signals from the controller
QSizeF m_cachedBarThickness;
QSizeF m_cachedBarSpacing;
bool m_cachedIsSlicingActivated;
int m_cachedRowCount;
int m_cachedColumnCount;
// Internal state
BarRenderItem *m_selectedBar; // points to renderitem array
QList<BarRenderItem *> *m_sliceSelection;
AxisRenderCache *m_sliceCache; // not owned
const LabelItem *m_sliceTitleItem; // not owned
bool m_xFlipped;
bool m_zFlipped;
bool m_yFlipped;
QRect m_mainViewPort;
QRect m_sliceViewPort;
bool m_updateLabels;
ShaderHelper *m_barShader;
ShaderHelper *m_depthShader;
ShaderHelper *m_selectionShader;
ShaderHelper *m_backgroundShader;
ShaderHelper *m_labelShader;
ObjectHelper *m_barObj;
ObjectHelper *m_backgroundObj;
ObjectHelper *m_gridLineObj;
ObjectHelper *m_labelObj;
GLuint m_bgrTexture;
GLuint m_depthTexture;
GLuint m_selectionTexture;
GLuint m_depthFrameBuffer;
GLuint m_selectionFrameBuffer;
GLuint m_selectionDepthBuffer;
GLfloat m_shadowQualityToShader;
GLint m_shadowQualityMultiplier;
GLfloat m_heightNormalizer;
GLfloat m_yAdjustment;
GLfloat m_rowWidth;
GLfloat m_columnDepth;
GLfloat m_maxDimension;
GLfloat m_scaleX;
GLfloat m_scaleZ;
GLfloat m_scaleFactor;
GLfloat m_maxSceneSize;
QVector3D m_selection;
QVector3D m_previousSelection;
bool m_hasHeightAdjustmentChanged;
BarRenderItem m_dummyBarRenderItem;
BarRenderItemArray m_renderItemArray;
public:
explicit Bars3DRenderer(Bars3DController *controller);
~Bars3DRenderer();
void updateDataModel(QBarDataProxy *dataProxy);
void updateScene(Q3DScene *scene);
void render(GLuint defaultFboHandle = 0);
QRect mainViewPort();
protected:
virtual void initializeOpenGL();
virtual void loadMeshFile();
public slots:
void updateBarSpecs(GLfloat thicknessRatio = 1.0f,
const QSizeF &spacing = QSizeF(1.0, 1.0),
bool relative = true);
void updateSelectionMode(QDataVis::SelectionMode newMode);
void updateSlicingActive(bool isSlicing);
void updateSampleSpace(int rowCount, int columnCount);
void updateBackgroundEnabled(bool enable);
void updateSelectedBarPos(const QPoint &position);
// Overloaded from abstract renderer
virtual void updateAxisRange(Q3DAbstractAxis::AxisOrientation orientation, qreal min, qreal max);
signals:
void selectedBarPosChanged(QPoint position);
private:
virtual void initShaders(const QString &vertexShader, const QString &fragmentShader);
virtual void updateShadowQuality(QDataVis::ShadowQuality quality);
virtual void updateTextures();
void drawSlicedScene(const LabelItem &xLabel, const LabelItem &yLabel, const LabelItem &zLabel);
void drawScene(GLuint defaultFboHandle);
void handleResize();
void loadBackgroundMesh();
void loadGridLineMesh();
void loadLabelMesh();
void initSelectionShader();
void initBackgroundShaders(const QString &vertexShader, const QString &fragmentShader);
void initLabelShaders(const QString &vertexShader, const QString &fragmentShader);
void initSelectionBuffer();
#if !defined(QT_OPENGL_ES_2)
void initDepthShader();
void updateDepthBuffer();
#endif
void calculateSceneScalingFactors();
void calculateHeightAdjustment();
Abstract3DController::SelectionType isSelected(GLint row, GLint bar);
Q_DISABLE_COPY(Bars3DRenderer)
friend class BarRenderItem;
};
QT_DATAVISUALIZATION_END_NAMESPACE
#endif
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