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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 QtDataVis3D 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 QtDataVis3D 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 ABSTRACT3DRENDERER_P_H
+#define ABSTRACT3DRENDERER_P_H
+
+#include <QtGui/QOpenGLFunctions>
+#include <QtGui/QFont>
+
+#include "datavis3dglobal_p.h"
+#include "abstract3dcontroller_p.h"
+#include "axisrendercache_p.h"
+#include "qabstractdataproxy.h"
+
+QT_DATAVIS3D_BEGIN_NAMESPACE
+
+class Abstract3DRenderer : public QObject, protected QOpenGLFunctions
+{
+protected:
+    Abstract3DController *m_controller;
+    bool m_isInitialized;
+    bool m_hasNegativeValues;
+    QRect m_cachedBoundingRect;
+    QDataVis::ShadowQuality m_cachedShadowQuality;
+    Theme m_cachedTheme;
+    QFont m_cachedFont;
+    QDataVis::LabelTransparency m_cachedLabelTransparency;
+    Drawer *m_drawer;
+    GLfloat m_autoScaleAdjustment;
+    QString m_cachedItemLabelFormat;
+    QString m_cachedObjFile;
+    QDataVis::SelectionMode m_cachedSelectionMode;
+    bool m_cachedIsGridEnabled;
+    bool m_cachedIsBackgroundEnabled;
+    int m_cachedZoomLevel;
+
+    AxisRenderCache m_axisCacheX;
+    AxisRenderCache m_axisCacheY;
+    AxisRenderCache m_axisCacheZ;
+
+    Abstract3DRenderer(Abstract3DController *controller);
+    virtual void initializeOpenGL();
+
+public:
+    inline bool isInitialized() { return m_isInitialized; }
+
+    virtual void updateBoundingRect(const QRect boundingRect);
+    virtual void updatePosition(const QRect boundingRect);
+    virtual void handleResize();
+
+    virtual void updateZoomLevel(int newZoomLevel);
+    virtual void updateTheme(Theme theme);
+    virtual void updateFont(const QFont &font);
+    virtual void updateLabelTransparency(QDataVis::LabelTransparency transparency);
+    virtual void updateSelectionMode(QDataVis::SelectionMode newMode);
+    virtual void updateGridEnabled(bool enable);
+    virtual void updateBackgroundEnabled(bool enable);
+    virtual void updateMeshFileName(const QString &objFileName);
+
+    virtual void handleShadowQualityChange();
+
+    void updateDataModel(QAbstractDataProxy *dataProxy);
+    virtual QString itemLabelFormat() const;
+    virtual void requestSelectionAtPoint(const QPoint &point) = 0;
+    virtual void updateTextures() = 0;
+    virtual void initSelectionBuffer() = 0;
+#if !defined(QT_OPENGL_ES_2)
+    virtual void updateDepthBuffer() = 0;
+#endif
+    virtual void updateShadowQuality(QDataVis::ShadowQuality quality) = 0;
+    virtual void initShaders(const QString &vertexShader, const QString &fragmentShader) = 0;
+    virtual void initBackgroundShaders(const QString &vertexShader, const QString &fragmentShader) = 0;
+    virtual void updateAxisType(QAbstractAxis::AxisOrientation orientation, QAbstractAxis::AxisType type);
+    virtual void updateAxisTitle(QAbstractAxis::AxisOrientation orientation, const QString &title);
+    virtual void updateAxisLabels(QAbstractAxis::AxisOrientation orientation, const QStringList &labels);
+    virtual void updateAxisRange(QAbstractAxis::AxisOrientation orientation, qreal min, qreal max);
+    virtual void updateAxisSegmentCount(QAbstractAxis::AxisOrientation orientation, int count);
+    virtual void updateAxisSubSegmentCount(QAbstractAxis::AxisOrientation orientation, int count);
+
+    AxisRenderCache &axisCacheForOrientation(QAbstractAxis::AxisOrientation orientation);
+
+public:
+    /**
+     * @brief render Implements OpenGL rendering that occurs in the rendering thread.
+     * @param defaultFboHandle Defaults FBO handle (defaults to 0).
+     */
+    virtual void render(CameraHelper *camera, const GLuint defaultFboHandle) = 0;
+};
+
+QT_DATAVIS3D_END_NAMESPACE
+
+#endif // ABSTRACT3DRENDERER_P_H