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29 | |
30 | // |
31 | // W A R N I N G |
32 | // ------------- |
33 | // |
34 | // This file is not part of the QtDataVisualization API. It exists purely as an |
35 | // implementation detail. This header file may change from version to |
36 | // version without notice, or even be removed. |
37 | // |
38 | // We mean it. |
39 | |
40 | #ifndef SURFACE3DRENDERER_P_H |
41 | #define SURFACE3DRENDERER_P_H |
42 | |
43 | #include "datavisualizationglobal_p.h" |
44 | #include "surface3dcontroller_p.h" |
45 | #include "abstract3drenderer_p.h" |
46 | #include "surfaceseriesrendercache_p.h" |
47 | |
48 | QT_BEGIN_NAMESPACE_DATAVISUALIZATION |
49 | |
50 | class ShaderHelper; |
51 | class Q3DScene; |
52 | |
53 | class QT_DATAVISUALIZATION_EXPORT Surface3DRenderer : public Abstract3DRenderer |
54 | { |
55 | Q_OBJECT |
56 | |
57 | private: |
58 | bool m_cachedIsSlicingActivated; |
59 | |
60 | // Internal attributes purely related to how the scene is drawn with GL. |
61 | ShaderHelper *m_depthShader; |
62 | ShaderHelper *m_backgroundShader; |
63 | ShaderHelper *m_surfaceFlatShader; |
64 | ShaderHelper *m_surfaceSmoothShader; |
65 | ShaderHelper *m_surfaceTexturedSmoothShader; |
66 | ShaderHelper *m_surfaceTexturedFlatShader; |
67 | ShaderHelper *m_surfaceGridShader; |
68 | ShaderHelper *m_surfaceSliceFlatShader; |
69 | ShaderHelper *m_surfaceSliceSmoothShader; |
70 | ShaderHelper *m_selectionShader; |
71 | float m_heightNormalizer; |
72 | float m_scaleX; |
73 | float m_scaleY; |
74 | float m_scaleZ; |
75 | GLuint m_depthFrameBuffer; |
76 | GLuint m_selectionFrameBuffer; |
77 | GLuint m_selectionDepthBuffer; |
78 | GLuint m_selectionResultTexture; |
79 | GLfloat m_shadowQualityToShader; |
80 | bool m_flatSupported; |
81 | bool m_selectionActive; |
82 | AbstractRenderItem m_dummyRenderItem; |
83 | GLint m_shadowQualityMultiplier; |
84 | QPoint m_selectedPoint; |
85 | QSurface3DSeries *m_selectedSeries; |
86 | QPoint m_clickedPosition; |
87 | bool m_selectionTexturesDirty; |
88 | GLuint m_noShadowTexture; |
89 | bool m_flipHorizontalGrid; |
90 | |
91 | public: |
92 | explicit Surface3DRenderer(Surface3DController *controller); |
93 | ~Surface3DRenderer(); |
94 | |
95 | void updateData(); |
96 | void updateSeries(const QList<QAbstract3DSeries *> &seriesList); |
97 | void updateSurfaceTextures(QVector<QSurface3DSeries *> seriesList); |
98 | SeriesRenderCache *createNewCache(QAbstract3DSeries *series); |
99 | void cleanCache(SeriesRenderCache *cache); |
100 | void updateSelectionMode(QAbstract3DGraph::SelectionFlags mode); |
101 | void updateRows(const QVector<Surface3DController::ChangeRow> &rows); |
102 | void updateItems(const QVector<Surface3DController::ChangeItem> &points); |
103 | void updateScene(Q3DScene *scene); |
104 | void updateSlicingActive(bool isSlicing); |
105 | void updateSelectedPoint(const QPoint &position, QSurface3DSeries *series); |
106 | void updateFlipHorizontalGrid(bool flip); |
107 | inline QPoint clickedPosition() const { return m_clickedPosition; } |
108 | void resetClickedStatus(); |
109 | QVector3D convertPositionToTranslation(const QVector3D &position, bool isAbsolute); |
110 | void updateAxisLabels(QAbstract3DAxis::AxisOrientation orientation, |
111 | const QStringList &labels); |
112 | void updateAxisTitleVisibility(QAbstract3DAxis::AxisOrientation orientation, |
113 | bool visible); |
114 | void updateMargin(float margin); |
115 | |
116 | void render(GLuint defaultFboHandle = 0); |
117 | |
118 | protected: |
119 | void contextCleanup(); |
120 | void initializeOpenGL(); |
121 | virtual void fixCameraTarget(QVector3D &target); |
122 | virtual void getVisibleItemBounds(QVector3D &minBounds, QVector3D &maxBounds); |
123 | |
124 | Q_SIGNALS: |
125 | void flatShadingSupportedChanged(bool supported); |
126 | |
127 | private: |
128 | void checkFlatSupport(SurfaceSeriesRenderCache *cache); |
129 | void updateObjects(SurfaceSeriesRenderCache *cache, bool dimensionChanged); |
130 | void updateSliceDataModel(const QPoint &point); |
131 | QPoint mapCoordsToSampleSpace(SurfaceSeriesRenderCache *cache, const QPointF &coords); |
132 | void findMatchingRow(float z, int &sample, int direction, QSurfaceDataArray &dataArray); |
133 | void findMatchingColumn(float x, int &sample, int direction, QSurfaceDataArray &dataArray); |
134 | void updateSliceObject(SurfaceSeriesRenderCache *cache, const QPoint &point); |
135 | void updateShadowQuality(QAbstract3DGraph::ShadowQuality quality); |
136 | void updateTextures(); |
137 | void initShaders(const QString &vertexShader, const QString &fragmentShader); |
138 | QRect calculateSampleRect(const QSurfaceDataArray &array); |
139 | void loadBackgroundMesh(); |
140 | |
141 | void drawSlicedScene(); |
142 | void drawScene(GLuint defaultFboHandle); |
143 | void drawLabels(bool drawSelection, const Q3DCamera *activeCamera, |
144 | const QMatrix4x4 &viewMatrix, const QMatrix4x4 &projectionMatrix); |
145 | |
146 | void calculateSceneScalingFactors(); |
147 | void initBackgroundShaders(const QString &vertexShader, const QString &fragmentShader); |
148 | void initSelectionShaders(); |
149 | void initSurfaceShaders(); |
150 | void initSelectionBuffer(); |
151 | void initDepthShader(); |
152 | void updateSelectionTextures(); |
153 | void createSelectionTexture(SurfaceSeriesRenderCache *cache, uint &lastSelectionId); |
154 | void idToRGBA(uint id, uchar *r, uchar *g, uchar *b, uchar *a); |
155 | void fillIdCorner(uchar *p, uchar r, uchar g, uchar b, uchar a); |
156 | void surfacePointSelected(const QPoint &point); |
157 | void updateSelectionPoint(SurfaceSeriesRenderCache *cache, const QPoint &point, bool label); |
158 | QPoint selectionIdToSurfacePoint(uint id); |
159 | void updateDepthBuffer(); |
160 | void emitSelectedPointChanged(QPoint position); |
161 | |
162 | Q_DISABLE_COPY(Surface3DRenderer) |
163 | |
164 | friend class SurfaceObject; |
165 | }; |
166 | |
167 | QT_END_NAMESPACE_DATAVISUALIZATION |
168 | |
169 | #endif |
170 | |