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| |
| #ifndef QTESSELATOR_P_H |
| #define QTESSELATOR_P_H |
| |
| #include <QPoint> |
| #include <QRect> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QTessellatorPrivate; |
| |
| typedef int Q27Dot5; |
| #define Q27Dot5ToDouble(i) ((i)/32.) |
| #define FloatToQ27Dot5(i) (int)((i) * 32) |
| #define IntToQ27Dot5(i) ((i) << 5) |
| #define Q27Dot5ToXFixed(i) ((i) << 11) |
| #define Q27Dot5Factor 32 |
| |
| class QTessellator { |
| public: |
| QTessellator(); |
| virtual ~QTessellator(); |
| |
| QRectF tessellate(const QPointF *points, int nPoints); |
| void tessellateConvex(const QPointF *points, int nPoints); |
| void tessellateRect(const QPointF &a, const QPointF &b, qreal width); |
| |
| void setWinding(bool w); |
| |
| struct Vertex { |
| Q27Dot5 x; |
| Q27Dot5 y; |
| }; |
| struct Trapezoid { |
| Q27Dot5 top; |
| Q27Dot5 bottom; |
| const Vertex *topLeft; |
| const Vertex *bottomLeft; |
| const Vertex *topRight; |
| const Vertex *bottomRight; |
| }; |
| virtual void addTrap(const Trapezoid &trap) = 0; |
| |
| private: |
| friend class QTessellatorPrivate; |
| QTessellatorPrivate *d; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif |