TPostScript


class description - source file - inheritance tree

class TPostScript : public TVirtualPS


    public:
TPostScript TPostScript() TPostScript TPostScript(const char* filename, Int_t type = -111) TPostScript TPostScript(const TPostScript&) virtual void ~TPostScript() virtual void CellArrayBegin(Int_t W, Int_t H, Double_t x1, Double_t x2, Double_t y1, Double_t y2) virtual void CellArrayEnd() virtual void CellArrayFill(Int_t r, Int_t g, Int_t b) static TClass* Class() virtual void Close(Option_t* opt) Int_t CMtoPS(Double_t u) void DefineMarkers() virtual void DrawBox(Double_t x1, Double_t y1, Double_t x2, Double_t y2) virtual void DrawFrame(Double_t xl, Double_t yl, Double_t xt, Double_t yt, Int_t mode, Int_t border, Int_t dark, Int_t light) void DrawHatch(Float_t dy, Float_t angle, Int_t n, Float_t* x, Float_t* y) void DrawHatch(Float_t dy, Float_t angle, Int_t n, Double_t* x, Double_t* y) void DrawPolyLine(Int_t n, TPoints* xy) void DrawPolyLineNDC(Int_t n, TPoints* uv) virtual void DrawPolyMarker(Int_t n, Float_t* x, Float_t* y) virtual void DrawPolyMarker(Int_t n, Double_t* x, Double_t* y) virtual void DrawPS(Int_t n, Float_t* xw, Float_t* yw) virtual void DrawPS(Int_t n, Double_t* xw, Double_t* yw) void FontEncode() void Initialize() virtual TClass* IsA() const void MakeGreek() void MovePS(Int_t x, Int_t y) virtual void NewPage() void Off() void On() virtual void Open(const char* filename, Int_t type = -111) void Range(Float_t xrange, Float_t yrange) void SaveRestore(Int_t flag) void SetColor(Int_t color = 1) virtual void SetColor(Float_t r, Float_t g, Float_t b) virtual void SetFillColor(Color_t cindex = 1) void SetFillPatterns(Int_t ipat, Int_t color) virtual void SetLineColor(Color_t cindex = 1) void SetLineScale(Float_t scale = 3) virtual void SetLineStyle(Style_t linestyle = 1) virtual void SetLineWidth(Width_t linewidth = 1) virtual void SetMarkerColor(Color_t cindex = 1) virtual void SetTextColor(Color_t cindex = 1) virtual void ShowMembers(TMemberInspector& insp, char* parent) virtual void Streamer(TBuffer& b) void StreamerNVirtual(TBuffer& b) virtual void Text(Double_t x, Double_t y, const char* string) void TextNDC(Double_t u, Double_t v, const char* string) Int_t UtoPS(Double_t u) Int_t VtoPS(Double_t v) Int_t XtoPS(Double_t x) Int_t YtoPS(Double_t y) void Zone()

Data Members


    protected:
Float_t fX1v X bottom left corner of paper Float_t fY1v Y bottom left corner of paper Float_t fX2v X top right corner of paper Float_t fY2v Y top right corner of paper Float_t fX1w Float_t fY1w Float_t fX2w Float_t fY2w Float_t fDXC Float_t fDYC Float_t fXC Float_t fYC Float_t fFX Float_t fFY Float_t fXVP1 Float_t fXVP2 Float_t fYVP1 Float_t fYVP2 Float_t fXVS1 Float_t fXVS2 Float_t fYVS1 Float_t fYVS2 Float_t fXsize Page size along X Float_t fYsize Page size along Y Float_t fMaxsize Largest dimension of X and Y Float_t fRed Per cent of red Float_t fGreen Per cent of green Float_t fBlue Per cent of blue Float_t fLineScale Line width scale factor Int_t fSave Number of gsave for restore Int_t fNXzone Number of zones along X Int_t fNYzone Number of zones along Y Int_t fIXzone Current zone along X Int_t fIYzone Current zone along Y Float_t fMarkerSizeCur current transformed value of marker size Int_t fCurrentColor current Postscript color index Int_t fNpages number of pages Int_t fType PostScript workstation type Int_t fMode PostScript mode Int_t fClip Clipping mode Bool_t fBoundingBox True for Encapsulated PostScript Bool_t fClear True when page must be cleared Bool_t fClipStatus Clipping Indicator Bool_t fRange True when a range has been defined Bool_t fZone Zone indicator char fPatterns[32] Indicate if pattern n is defined Int_t fNbinCT Number of entries in the current Cell Array Int_t fNbCellW Number of boxes per line Int_t fNbCellLine Number of boxes in the current line Int_t fMaxLines Maximum number of lines in a PS array Int_t fLastCellRed Last red value Int_t fLastCellGreen Last green value Int_t fLastCellBlue Last blue value Int_t fNBSameColorCell Number of boxes with the same color

Class Description

                                                                      
 TPostScript                                                          
                                                                      
 Graphics interface to PostScript.                                    
                                                                      
 This code was initially developed in the context of HIGZ and PAW     
 by Olivier Couet and Pierre Juillot.                                 
 It has been converted to a C++ class by Rene Brun.                   
                                                                      


TPostScript() : TVirtualPS()
 Default PostScript constructor

TPostScript(const char *fname, Int_t wtype) :TVirtualPS(fname, wtype)
 Initialize the PostScript interface

  fname : PostScript file name
  wtype : PostScript workstation type


  The possible workstation types are:
     111 ps  Portrait
     112 ps  Landscape
     113 eps

void Open(const char *fname, Int_t wtype)
 Open a PostScript file

~TPostScript()
 Default PostScript destructor

void Close(Option_t *)
 Close a PostScript file

void On()
 Activate an already open PostScript file

void Off()
 Deactivate an already open PostScript file

void CellArrayBegin(Int_t W, Int_t /*H*/, Double_t x1, Double_t x2, Double_t y1, Double_t y2)
 Draw a Cell Array

 Drawing a PostScript Cell Array is in fact done thanks to three
 procedures: CellArrayBegin, CellArrayFill, and CellArrayEnd.

 CellArrayBegin: Initiate the Cell Array by writing the necessary
                 PostScript procedures and the initial values of the
                 required parameters. The input parameters are:
                 W: number of boxes along the width.
                 H: number of boxes along the height
                 x1,x2,y1,y2: First box coordinates.
 CellArrayFill:  Is called for each box of the Cell Array. The first
                 box is the top left one and the last box is the
                 bottom right one. The input parameters are the Red,
                 Green, and Blue components of the box colour. These
                 Levels are between 0 and 255.
 CellArrayEnd:   Finishes the Cell Array.

 PostScript cannot handle arrays larger than 65535. So the Cell Array
 is drawn in several pieces.

void CellArrayFill(Int_t r, Int_t g, Int_t b)

void CellArrayEnd()

void DefineMarkers()
 Define the markers

void DrawBox(Double_t x1, Double_t y1, Double_t x2, Double_t y2)
 Draw a Box

void DrawFrame(Double_t xl, Double_t yl, Double_t xt, Double_t yt, Int_t mode, Int_t border, Int_t dark, Int_t light)
 Draw a Frame around a box

 mode = -1  box looks as it is behind the screen
 mode =  1  box looks as it is in front of the screen
 border is the border size in already precomputed PostScript units
 dark  is the color for the dark part of the frame
 light is the color for the light part of the frame

void DrawPolyLine(Int_t nn, TPoints *xy)
 Draw a PolyLine

  Draw a polyline through  the points xy.
  If nn=1 moves only to point x,y.
  If nn=0 the x,y are  written  in the PostScript file
          according to the current transformation.
  If nn>0 the line is clipped as a line.
  If nn<0 the line is clipped as a fill area.

void DrawPolyLineNDC(Int_t nn, TPoints *xy)
 Draw a PolyLine in NDC space

  Draw a polyline through the points xy.
  If nn=1 moves only to point x,y.
  If nn=0 the x,y are  written  in the PostScript file
          according to the current transformation.
  If nn>0 the line is clipped as a line.
  If nn<0 the line is clipped as a fill area.

void DrawPolyMarker(Int_t n, Float_t *x, Float_t *y)
 Draw markers at the n WC points x, y

void DrawPolyMarker(Int_t n, Double_t *x, Double_t *y)
 Draw markers at the n WC points x, y

void DrawPS(Int_t nn, Float_t *xw, Float_t *yw)
 Draw a PolyLine

  Draw a polyline through the points xw,yw.
  If nn=1 moves only to point xw,yw.
  If nn=0 the XW(1) and YW(1) are  written  in the PostScript file
          according to the current NT.
  If nn>0 the line is clipped as a line.
  If nn<0 the line is clipped as a fill area.

void DrawPS(Int_t nn, Double_t *xw, Double_t *yw)
 Draw a PolyLine

 Draw a polyline through  the points xw,yw.
 If nn=1 moves only to point xw,yw.
 If nn=0 the xw(1) and YW(1) are  written  in the PostScript file
         according to the current NT.
 If nn>0 the line is clipped as a line.
 If nn<0 the line is clipped as a fill area.

void DrawHatch(Float_t, Float_t, Int_t, Float_t *, Float_t *)
 Draw Fill area with hatch styles

void DrawHatch(Float_t, Float_t, Int_t, Double_t *, Double_t *)
 Draw Fill area with hatch styles

void FontEncode()
 Font Reencoding

void Initialize()
 PostScript Initialisation

 This routine initialize the following PostScript procedures:

 +------------+------------------+-----------------------------------+
 | Macro Name | Input parameters |            Explanation            |
 +------------+------------------+-----------------------------------+
 |     l      | x y              | Draw a line to the x y position   |
 +------------+------------------+-----------------------------------+
 |     m      | x y              | Move to the position x y          |
 +------------+------------------+-----------------------------------+
 |     box    | dx dy x y        | Define a box                      |
 +------------+------------------+-----------------------------------+
 |     bl     | dx dy x y        | Draw a line box                   |
 +------------+------------------+-----------------------------------+
 |     bf     | dx dy x y        | Draw a filled box                 |
 +------------+------------------+-----------------------------------+
 |     sw     | text             | Return string width of text       |
 +------------+------------------+-----------------------------------+
 |     t      | x y              | Translate                         |
 +------------+------------------+-----------------------------------+
 |     r      | angle            | Rotate                            |
 +------------+------------------+-----------------------------------+
 |     rl     | i j              | Roll the stack                    |
 +------------+------------------+-----------------------------------+
 |     d      | x y              | Draw a relative line to x y       |
 +------------+------------------+-----------------------------------+
 |     X      | x                | Draw a relative line to x (y=0)   |
 +------------+------------------+-----------------------------------+
 |     Y      | y                | Draw a relative line to y (x=0)   |
 +------------+------------------+-----------------------------------+
 |     rm     | x y              | Move relatively to x y            |
 +------------+------------------+-----------------------------------+
 |     gr     |                  | Restore the graphic context       |
 +------------+------------------+-----------------------------------+
 |     lw     | lwidth           | Set line width to lwidth          |
 +------------+------------------+-----------------------------------+
 |     sd     | [] 0             | Set dash line define by []        |
 +------------+------------------+-----------------------------------+
 |     s      |                  | Stroke mode                       |
 +------------+------------------+-----------------------------------+
 |     c      | r g b            | Set rgb color to r g b            |
 +------------+------------------+-----------------------------------+
 |     cl     |                  | Close path                        |
 +------------+------------------+-----------------------------------+
 |     f      |                  | Fill the last describe path       |
 +------------+------------------+-----------------------------------+
 |     mXX    | x y              | Draw the marker type XX at (x,y)  |
 +------------+------------------+-----------------------------------+
 |     Zone   | ix iy            | Define the current zone           |
 +------------+------------------+-----------------------------------+
 |     black  |                  | The color is black                |
 +------------+------------------+-----------------------------------+
 |     C      | dx dy x y        | Clipping on                       |
 +------------+------------------+-----------------------------------+
 |     NC     |                  | Clipping off                      |
 +------------+------------------+-----------------------------------+
 |     R      |                  | repeat                            |
 +------------+------------------+-----------------------------------+

void MakeGreek()
 Reencode the Greek (/Symbol) font into the special font (/Special)

void MovePS(Int_t ix, Int_t iy)
 Move to a new position

void NewPage()
 Move to a new PostScript page

void Range(Float_t xsize, Float_t ysize)
 Set the range for the paper in centimeters

void SaveRestore(Int_t flag)
 Compute number of gsaves for restore
 This allows to write the correct number of grestore at the
 end of the PS file.

void SetFillColor( Color_t cindex )
 Set color index for fill areas

void SetFillPatterns(Int_t ipat, Int_t color)
 Patterns definition

 Define the pattern ipat in the current PS file. ipat can vary from
 1 to 25. Together with the pattern, the color (color) in which the
 pattern has to be drawn is also required. A pattern is defined in the
 current PS file only the first time it is used. Some level 2
 Postscript functions are used, so on level 1 printers, patterns will
 not work. This is not a big problem because patterns are
 defined only if they are used, so if they are not used a PS level 1
 file will not be polluted by level 2 features, and in any case the old
 patterns used a lot of memory which made them almost unusable on old
 level 1 printers. Finally we should say that level 1 devices are
 becoming very rare. The official PostScript is now level 3 !

void SetLineColor( Color_t cindex )
 Set color index for lines

void SetLineStyle(Style_t linestyle)
 Change the line style

   linestyle = 2 dashed
             = 3  dotted
             = 4  dash-dotted
              else = solid

 See TStyle::SetLineStyleString for style definition

void SetLineWidth(Width_t linewidth)
 Change the line width

void SetMarkerColor( Color_t cindex )
 Set color index for markers

void SetColor(Int_t color)
 Set the current color.

void SetColor(Float_t r, Float_t g, Float_t b)
 Set directly current color (don't go via TColor).

void SetTextColor( Color_t cindex )
 Set color index for text

void Text(Double_t xx, Double_t yy, const char *chars)
 Write a string of characters

 This routine writes the string chars into a PostScript file
 at position xx,yy in world coordinates.

 Note the special action of the following special characters:

       ` : go to Greek
       ' : go to special
       ~ : go to ZapfDingbats
       ? : go to subscript
       ^ : go to superscript
       ! : go to normal level of script
       & : backspace one character
       # : end of Greek or of ZapfDingbats

 Note1: This special characters have no effect on the screen.
 Note2: To print one of the characters above in the Postscript file
        use the escape character "@" in front of the character.

void TextNDC(Double_t u, Double_t v, const char *chars)
 Write a string of characters in NDC

Int_t UtoPS(Double_t u)
 Convert U from NDC coordinate to PostScript

Int_t VtoPS(Double_t v)
 Convert V from NDC coordinate to PostScript

Int_t XtoPS(Double_t x)
 Convert X from world coordinate to PostScript

Int_t YtoPS(Double_t y)
 Convert Y from world coordinate to PostScript

void Zone()
 Initialize the PostScript page in zones



Inline Functions


              Int_t CMtoPS(Double_t u)
               void SetLineScale(Float_t scale = 3)
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)
        TPostScript TPostScript(const TPostScript&)


Author: Rene Brun, Olivier Couet, Pierre Juillot 29/11/94
Last update: root/postscript:$Name: $:$Id: TPostScript.cxx,v 1.34 2003/01/20 08:44:46 brun Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *


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