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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 SURFACE3DRENDERER_P_H
#define SURFACE3DRENDERER_P_H
#include <QtCore/QSize>
#include <QtCore/QObject>
#include <QtGui/QOpenGLFunctions>
#include <QtGui/QFont>
#include <QWindow>
#include "datavisualizationglobal_p.h"
#include "surface3dcontroller_p.h"
#include "abstract3drenderer_p.h"
#include "scatterrenderitem_p.h"
#include "qsurfacedataproxy.h"
class QOpenGLShaderProgram;
namespace QtDataVisualization {
class ShaderHelper;
class ObjectHelper;
class SurfaceObject;
class TextureHelper;
class Theme;
class Drawer;
class Q3DScene;
class SelectionPointer;
class QT_DATAVISUALIZATION_EXPORT Surface3DRenderer : public Abstract3DRenderer
{
Q_OBJECT
public:
// Visual parameters
QRect m_boundingRect;
bool m_labelBackground;
QFont m_font;
bool m_isGridEnabled;
private:
bool m_cachedIsSlicingActivated;
// Internal attributes purely related to how the scene is drawn with GL.
ShaderHelper *m_depthShader;
ShaderHelper *m_backgroundShader;
ShaderHelper *m_surfaceShader;
ShaderHelper *m_surfaceGridShader;
ShaderHelper *m_selectionShader;
ShaderHelper *m_labelShader;
GLfloat m_heightNormalizer;
GLfloat m_scaleFactor;
GLfloat m_scaleX;
GLfloat m_scaleZ;
GLfloat m_scaleXWithBackground;
GLfloat m_scaleZWithBackground;
GLfloat m_surfaceScaleX;
GLfloat m_surfaceScaleZ;
GLfloat m_surfaceOffsetX;
GLfloat m_surfaceOffsetZ;
GLfloat m_minVisibleColumnValue;
GLfloat m_maxVisibleColumnValue;
GLfloat m_minVisibleRowValue;
GLfloat m_maxVisibleRowValue;
GLfloat m_visibleColumnRange;
GLfloat m_visibleRowRange;
ObjectHelper *m_backgroundObj;
ObjectHelper *m_gridLineObj;
ObjectHelper *m_labelObj;
SurfaceObject *m_surfaceObj;
SurfaceObject *m_sliceSurfaceObj;
GLuint m_depthTexture;
GLuint m_depthModelTexture;
GLuint m_depthFrameBuffer;
GLuint m_selectionFrameBuffer;
GLuint m_selectionDepthBuffer;
GLuint m_selectionTexture;
GLuint m_selectionResultTexture;
GLfloat m_shadowQualityToShader;
bool m_cachedFlatShading;
bool m_flatSupported;
bool m_cachedSurfaceVisible;
bool m_cachedSurfaceGridOn;
SelectionPointer *m_selectionPointer;
bool m_selectionActive;
bool m_xFlipped;
bool m_zFlipped;
bool m_yFlipped;
AbstractRenderItem m_dummyRenderItem;
QSurfaceDataArray m_dataArray;
QSurfaceDataArray m_sliceDataArray;
QRect m_sampleSpace;
GLint m_shadowQualityMultiplier;
QSizeF m_areaSize;
uint m_clickedPointId;
bool m_hasHeightAdjustmentChanged;
QPoint m_selectedPoint;
const QSurface3DSeries *m_selectedSeries;
GLuint m_uniformGradientTexture;
QVector3D m_uniformGradientTextureColor;
public:
explicit Surface3DRenderer(Surface3DController *controller);
~Surface3DRenderer();
void updateData();
void updateSeries(const QList<QAbstract3DSeries *> &seriesList, bool updateVisibility);
void updateRows(const QVector<int> &rows);
void updateItem(const QVector<QPoint> &points);
void updateScene(Q3DScene *scene);
bool updateFlatStatus(bool enable);
void updateSurfaceGridStatus(bool enable);
void updateSlicingActive(bool isSlicing);
void updateSelectedPoint(const QPoint &position, const QSurface3DSeries *series);
void drawSlicedScene();
void render(GLuint defaultFboHandle = 0);
protected:
void initializeOpenGL();
signals:
void pointClicked(QPoint position, QSurface3DSeries *series);
void flatShadingSupportedChanged(bool supported);
private:
void updateSliceDataModel(const QPoint &point);
void updateShadowQuality(QAbstract3DGraph::ShadowQuality quality);
void updateTextures();
void initShaders(const QString &vertexShader, const QString &fragmentShader);
QRect calculateSampleRect(const QSurfaceDataArray &array);
void loadBackgroundMesh();
void loadGridLineMesh();
void loadLabelMesh();
void loadSurfaceObj();
void loadSliceSurfaceObj();
void drawScene(GLuint defaultFboHandle);
void calculateSceneScalingFactors();
void initBackgroundShaders(const QString &vertexShader, const QString &fragmentShader);
void initLabelShaders(const QString &vertexShader, const QString &fragmentShader);
void initSelectionShaders();
void initSurfaceShaders();
void initSelectionBuffer();
void initDepthShader();
void updateSelectionTexture();
void idToRGBA(uint id, uchar *r, uchar *g, uchar *b, uchar *a);
void fillIdCorner(uchar *p, uchar r, uchar g, uchar b, uchar a, int stride);
void surfacePointSelected(const QPoint &point);
QPoint selectionIdToSurfacePoint(uint id);
QString createSelectionLabel(float value, int column, int row);
#if !defined(QT_OPENGL_ES_2)
void updateDepthBuffer();
#endif
void emitSelectedPointChanged(QPoint position);
void generateUniformGradient(const QVector3D newColor);
Q_DISABLE_COPY(Surface3DRenderer)
};
}
#endif // SURFACE3DRENDERER_P_H
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