+
+class RGBColor;
+class SGP {
+private:
+ int m_iPhysicalXSize; // Physical Window size
+ int m_iPhysicalYSize;
+ SGPDriver m_driver;
+
+ double xw_min; // Window extents
+ double yw_min;
+ double xw_max;
+ double yw_max;
+ double xv_min; // Viewport extents
+ double yv_min;
+ double xv_max;
+ double yv_max;
+ double viewNDC[4]; // Viewport array for clip_rect()
+
+ int m_iCurrentPhysicalX;
+ int m_iCurrentPhysicalY;
+ double m_dCurrentWorldX;
+ double m_dCurrentWorldY;
+ double m_dTextAngle;
+ bool m_bRecalcTransform;
+ double m_dPointsPerPixel; // points (72pt/in) per screen pixel;
+ int m_iLinestyle;\r
+
+ // Master coordinates are coordinates before CTM transformation
+ // World coordinates are coordinates defined by setWindow()
+ // Normalized device coordinates range from 0. to 1. in both axes
+ TransformationMatrix2D wc_to_ndc; // World coord to NDC matrix
+ TransformationMatrix2D mc_to_ndc; // Master to NDC
+ TransformationMatrix2D ndc_to_mc; // NDC to Master
+ TransformationMatrix2D m_ctm; // Current transfromation matrix
+
+ void calc_transform ();
+
+ static RGBColor s_aRGBColor[];
+ static int s_iRGBColorCount;
+
+#if HAVE_WXWINDOWS
+ wxPen m_pen;
+ wxFont* m_pFont;
+#endif
+
+public:
+ enum { // linestyles
+ LS_NOLINE = 0,
+ LS_SOLID = 0xffff,
+ LS_DASH1 = 0xff00,
+ LS_DASH2 = 0xf0f0,
+ LS_DASH3 = 0xcccc,
+ LS_DASH4 = 0xff3e,
+ LS_DOTTED = 0xaaaa,
+ };
+
+ enum { // Codes for marker symbols
+ MARK_POINT = 0, // small dot
+ MARK_SQUARE = 1, // empty square
+ MARK_FSQUARE = 2, // filled square
+ MARK_DIAMOND = 3, // empty diamond
+ MARK_FDIAMOND = 4, // filled diamond
+ MARK_CROSS = 5, // cross
+ MARK_XCROSS = 6, // x
+ MARK_CIRCLE = 7, // open circle
+ MARK_FCIRCLE = 8, // filled circle
+ MARK_BSQUARE = 9, // big open square
+ MARK_BDIAMOND = 10, // big open diamond
+ };
+ enum { MARK_COUNT = 11, };
+ static const unsigned char MARKER_BITMAP[MARK_COUNT][5];
+
+ SGP (const SGPDriver& driver);
+ ~SGP();\r
+
+ void drawCircle (const double r);
+ void drawArc (const double r, double start, double stop);
+ void drawRect (double xmin, double ymin, double xmax, double ymax);
+ void lineAbs(double x, double y);
+ void moveAbs(double x, double y);
+ void lineRel(double x, double y);
+ void moveRel(double x, double y);
+ void drawText(const char *szMessage);
+ void drawText(const std::string& rsMessage);
+ void polylineAbs(double x[], double y[], int n);
+ void markerAbs (double x, double y);
+ void markerRel(double x, double y);
+ void pointAbs(double x, double y);
+ void pointRel(double x, double y);
+
+ void eraseWindow ();
+ void setWindow (double xmin, double ymin, double xmax, double ymax);
+ void setViewport (double xmin, double ymin, double xmax, double ymax);
+ void frameViewport();
+
+ void setColor (int icol);
+ void setLineStyle (int style);
+ void setTextSize (double height);
+ void setTextNDCSize (double height);
+ void setTextPointSize (double height);
+ void setTextAngle (double angle);
+ void setTextColor (int iFGcolor, int iBGcolor);
+ void setPenWidth (int width);
+ void setMarker (int idMarker, int color);
+ void setRasterOp (int ro);
+
+ void getWindow (double& xmin, double& ymin, double& xmax, double& ymax);
+ void getViewport (double& xmin, double& ymin, double& xmax, double& ymax);
+ void getTextExtent (const char *szText, double* x, double* y);
+ double getCharHeight ();
+ double getCharWidth ();
+ SGPDriver& getDriver() {return m_driver;}
+ const SGPDriver& getDriver() const {return m_driver;}
+
+ void ctmClear ();
+ void ctmSet (const TransformationMatrix2D& m);
+ void preTranslate (double x, double y);
+ void postTranslate (double x, double y);
+ void preScale (double sx, double sy);
+ void postScale (double sx, double sy);
+ void preRotate (double theta);
+ void postRotate (double theta);
+ void preShear (double shrx, double shry);
+ void postShear (double shrx, double shry);
+ void transformNDCtoMC (double* x, double* y);
+ void transformMCtoNDC (double* x, double* y);
+ void transformMCtoNDC (double xIn, double yIn, double* xOut, double* yOut);
+
+ void stylusNDC (double x, double y, bool beam);
+ void pointNDC (double x, double y);
+ void markerNDC (double x, double y);
+
+#if HAVE_WXWINDOWS
+ void setDC (wxDC* pDC);
+#endif