#ifndef _Graphics_h_
#define _Graphics_h_
/* Graphics.h
 *
 * Copyright (C) 1992-2011,2012 Paul Boersma
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "Thing.h"

#include "Graphics_enums.h"

typedef struct { double red, green, blue; } Graphics_Colour;

typedef struct { double x1NDC, x2NDC, y1NDC, y2NDC; } Graphics_Viewport;

#if defined (UNIX) || defined (macintosh) && ! useCarbon
	typedef void *GuiObject;
#else
	Thing_declare (GuiObject);
#endif

typedef struct {
	unsigned char link, rightToLeft;
	short style, size, baseline;
	unsigned long code;
	wchar_t kar;
	double width;
	union { long integer; const char *string; } font;
	int cell, line, run;
} _Graphics_widechar;

Thing_define (Graphics, Thing) {
	// new data:
	public:
		/* Device constants. */
		bool screen;
			/* A boolean for whether we are a graphic screen (which may include a non-PostScript printer. */
		bool postScript;
			/* A boolean for whether we are a PostScript device. */
		bool printer;
			/* A boolean for whether we are a printer. */
		bool metafile;
			/* A boolean for whether we are a high-resolution metafile or clipboard. */
		bool yIsZeroAtTheTop;
			/* A boolean for whether vertical cooordinates increase from top to bottom (as on most screens, but not PostScript). */
		GuiObject d_drawingArea;
			/* Also used as a boolean. */
		int resolution;
			/* Dots per inch. */
		long d_x1DCmin, d_x2DCmax, d_y1DCmin, d_y2DCmax;
			/* Maximum dimensions of the output device. */
			/* x1DCmin < x2DCmax; y1DCmin < y2DCmax; */
			/* The point (x1DCmin, y1DCmin) can be either in the top left */
			/* or in the bottom left, depending on the yIsZeroAtTheTop flag. */
			/* Device variables. */
		long d_x1DC, d_x2DC, d_y1DC, d_y2DC;
			/* Current dimensions of the output device, or: */
			/* device coordinates of the viewport rectangle. */
			/* x1DCmin <= x1DC < x2DC <= x2DCmax; */
			/* y1DCmin <= y1DC < y2DC <= y2DCmax; */
			/* Graphics_create_xxxxxx sets these coordinates to */
			/* x1DCmin, x2DCmax, y1DCmin, and y2DCmax. */
			/* They can be changed by Graphics_setWsViewport. */
		double d_x1wNDC, d_x2wNDC, d_y1wNDC, d_y2wNDC;
			/* Normalized device coordinates of */
			/* the device viewport rectangle. */
			/* The point (x1wNDC, y1wNDC) is always in the bottom left.	*/
			/* Graphics_create_xxxxxx sets these coordinates to */
			/* 0.0, 1.0, 0.0, and 1.0. */
			/* They can be changed by Graphics_setWsWindow. */
		double d_x1NDC, d_x2NDC, d_y1NDC, d_y2NDC;
			/* Normalized device coordinates of the user output viewport, */
			/* which is a part of the device viewport rectangle. */
			/* x1wNDC <= x1NDC < x2NDC <= x2wNDC; */
			/* y1wNDC <= y1NDC < y2NDC <= y2wNDC; */
			/* Graphics_create_xxxxxx sets these coordinates to */
			/* 0.0, 1.0, 0.0, and 1.0. */
			/* They can be changed by Graphics_setViewport. */
		double d_x1WC, d_x2WC, d_y1WC, d_y2WC;
			/* World coordinates of the user output viewport rectangle.	*/
			/* They bear a relation to the "real" world, */
			/* and are used in the drawing routines. */
			/* Graphics_create_xxxxxx sets these coordinates to */
			/* 0.0, 1.0, 0.0, and 1.0. */
			/* They can be changed by Graphics_setWindow. */
		double deltaX, deltaY, scaleX, scaleY;
			/* Current coordinate transformation. */
		/* Graphics state. */
		int lineType;
		Graphics_Colour colour;
		double lineWidth, arrowSize;
		int horizontalTextAlignment, verticalTextAlignment;
		double textRotation, wrapWidth, secondIndent, textX, textY;
		enum kGraphics_font font;
		int fontSize, fontStyle;
		int percentSignIsItalic, numberSignIsBold, circumflexIsSuperscript, underscoreIsSubscript;
		int dollarSignIsCode, atSignIsLink;
		bool recording, duringXor;
		long irecord, nrecord;
		double *record;
		Graphics_Viewport outerViewport;   /* For Graphics_(un)setInner (). */
		double horTick, vertTick;   /* For Graphics_mark(s)XXX (). */
		double paperWidth, paperHeight;
	// overridden methods:
		virtual void v_destroy ();
	// new methods:
		virtual void v_polyline (long numberOfPoints, long *xyDC, bool close) { (void) numberOfPoints; (void) xyDC; (void) close; }
		virtual void v_fillArea (long numberOfPoints, long *xyDC) { (void) numberOfPoints; (void) xyDC; }
		virtual void v_rectangle (long a_x1DC, long a_x2DC, long a_y1DC, long a_y2DC) { (void) a_x1DC; (void) a_x2DC; (void) a_y1DC; (void) a_y2DC; }
		virtual void v_fillRectangle (long a_x1DC, long a_x2DC, long a_y1DC, long a_y2DC) { (void) a_x1DC; (void) a_x2DC; (void) a_y1DC; (void) a_y2DC; }
		virtual void v_circle (double xDC, double yDC, double rDC) { (void) xDC; (void) yDC; (void) rDC; }
		virtual void v_ellipse (long a_x1DC, long a_x2DC, long a_y1DC, long a_y2DC) { (void) a_x1DC; (void) a_x2DC; (void) a_y1DC; (void) a_y2DC; }
		virtual void v_arc (long xDC, long yDC, long rDC, double fromAngle, double toAngle) { (void) xDC; (void) yDC; (void) rDC; (void) fromAngle; (void) toAngle; }
		virtual void v_fillCircle (long xDC, long yDC, long rDC) { (void) xDC; (void) yDC; (void) rDC; }
		virtual void v_fillEllipse (long a_x1DC, long a_x2DC, long a_y1DC, long a_y2DC) { (void) a_x1DC; (void) a_x2DC; (void) a_y1DC; (void) a_y2DC; }
		virtual void v_button (long a_x1DC, long a_x2DC, long a_y1DC, long a_y2DC)
			{
				v_rectangle (a_x1DC, a_x2DC, a_y1DC, a_y2DC);   // the simplest implementation
			}
		virtual void v_roundedRectangle (long x1DC, long x2DC, long y1DC, long y2DC, long r);
		virtual void v_fillRoundedRectangle (long x1DC, long x2DC, long y1DC, long y2DC, long r);
		virtual void v_arrowHead (long xDC, long yDC, double angle);
		virtual bool v_mouseStillDown () { return false; }
		virtual void v_getMouseLocation (double *xWC, double *yWC) { *xWC = *yWC = NUMundefined; }
		virtual void v_flushWs () { }
		virtual void v_clearWs () { }
		virtual void v_updateWs () { }
};

Graphics Graphics_create (int resolution);
Graphics Graphics_create_postscriptjob (MelderFile file, int resolution, enum kGraphicsPostscript_spots spots,
	enum kGraphicsPostscript_paperSize paperSize, enum kGraphicsPostscript_orientation rotation, double magnification);
Graphics Graphics_create_epsfile (MelderFile file, int resolution, enum kGraphicsPostscript_spots spots,
	double xmin, double xmax, double ymin, double ymax, bool includeFonts, bool useSilipaPS);
Graphics Graphics_create_pdffile (MelderFile file, int resolution,
	double x1inches, double x2inches, double y1inches, double y2inches);
Graphics Graphics_create_pdf (void *context, int resolution,
	double x1inches, double x2inches, double y1inches, double y2inches);
Graphics Graphics_create_postscriptprinter (void);
Graphics Graphics_create_screenPrinter (void *display, void *window);
Graphics Graphics_create_screen (void *display, void *window, int resolution);
Graphics Graphics_create_xmdrawingarea (/* GuiObject */ void *drawingArea);

int Graphics_getResolution (Graphics me);

void Graphics_setWsViewport (Graphics me, long x1DC, long x2DC, long y1DC, long y2DC);
void Graphics_resetWsViewport (Graphics me, long x1DC, long x2DC, long y1DC, long y2DC);
void Graphics_setWsWindow (Graphics me, double x1NDC, double x2NDC, double y1NDC, double y2NDC);
void Graphics_inqWsViewport (Graphics me, long *x1DC, long *x2DC, long *y1DC, long *y2DC);
void Graphics_inqWsWindow (Graphics me, double *x1NDC, double *x2NDC, double *y1NDC, double *y2NDC);
void Graphics_clearWs (Graphics me);
void Graphics_flushWs (Graphics me);
void Graphics_updateWs (Graphics me);
void Graphics_DCtoWC (Graphics me, long xDC, long yDC, double *xWC, double *yWC);
void Graphics_WCtoDC (Graphics me, double xWC, double yWC, long *xDC, long *yDC);

void Graphics_setViewport (Graphics me, double x1NDC, double x2NDC, double y1NDC, double y2NDC);
Graphics_Viewport Graphics_insetViewport (Graphics me, double x1rel, double x2rel, double y1rel, double y2rel);
void Graphics_resetViewport (Graphics me, Graphics_Viewport viewport);
void Graphics_setWindow (Graphics me, double x1, double x2, double y1, double y2);

void Graphics_polyline (Graphics me, long numberOfPoints, double *x, double *y);
void Graphics_polyline_closed (Graphics me, long numberOfPoints, double *x, double *y);
void Graphics_text (Graphics me, double x, double y, const wchar_t *text);
void Graphics_text1 (Graphics me, double x, double y, const wchar_t *s1);
void Graphics_text2 (Graphics me, double x, double y, const wchar_t *s1, const wchar_t *s2);
void Graphics_text3 (Graphics me, double x, double y, const wchar_t *s1, const wchar_t *s2, const wchar_t *s3);
void Graphics_text4 (Graphics me, double x, double y, const wchar_t *s1, const wchar_t *s2, const wchar_t *s3, const wchar_t *s4);
void Graphics_text5 (Graphics me, double x, double y, const wchar_t *s1, const wchar_t *s2, const wchar_t *s3, const wchar_t *s4, const wchar_t *s5);
void Graphics_text6 (Graphics me, double x, double y, const wchar_t *s1, const wchar_t *s2, const wchar_t *s3, const wchar_t *s4, const wchar_t *s5, const wchar_t *s6);
void Graphics_text7 (Graphics me, double x, double y, const wchar_t *s1, const wchar_t *s2, const wchar_t *s3, const wchar_t *s4, const wchar_t *s5, const wchar_t *s6, const wchar_t *s7);
void Graphics_text8 (Graphics me, double x, double y, const wchar_t *s1, const wchar_t *s2, const wchar_t *s3, const wchar_t *s4, const wchar_t *s5, const wchar_t *s6, const wchar_t *s7, const wchar_t *s8);
void Graphics_text9 (Graphics me, double x, double y, const wchar_t *s1, const wchar_t *s2, const wchar_t *s3, const wchar_t *s4, const wchar_t *s5, const wchar_t *s6, const wchar_t *s7, const wchar_t *s8, const wchar_t *s9);
void Graphics_textRect (Graphics me, double x1, double x2, double y1, double y2, const wchar_t *text);
double Graphics_textWidth (Graphics me, const wchar_t *text);
double Graphics_textWidth_ps (Graphics me, const wchar_t *text, bool useSilipaPS);
double Graphics_textWidth_ps_mm (Graphics me, const wchar_t *text, bool useSilipaPS);
void Graphics_fillArea (Graphics me, long numberOfPoints, double *x, double *y);
void Graphics_cellArray (Graphics me, double **z, long ix1, long ix2, double x1, double x2,
	long iy1, long iy2, double y1, double y2, double minimum, double maximum);
void Graphics_cellArray8 (Graphics me, unsigned char **z, long ix1, long ix2, double x1, double x2,
	long iy1, long iy2, double y1, double y2, unsigned char minimum, unsigned char maximum);
void Graphics_image (Graphics me, double **z, long ix1, long ix2, double x1, double x2,
	long iy1, long iy2, double y1, double y2, double minimum, double maximum);
void Graphics_image8 (Graphics me, unsigned char **z, long ix1, long ix2, double x1, double x2,
	long iy1, long iy2, double y1, double y2, unsigned char minimum, unsigned char maximum);
void Graphics_imageFromFile (Graphics me, const wchar_t *relativeFileName, double x1, double x2, double y1, double y2);
void Graphics_line (Graphics me, double x1, double y1, double x2, double y2);
void Graphics_rectangle (Graphics me, double x1, double x2, double y1, double y2);
void Graphics_fillRectangle (Graphics me, double x1, double x2, double y1, double y2);
void Graphics_roundedRectangle (Graphics me, double x1, double x2, double y1, double y2, double r_mm);
void Graphics_fillRoundedRectangle (Graphics me, double x1, double x2, double y1, double y2, double r_mm);
void Graphics_function (Graphics me, double y [], long ix1, long ix2, double x1, double x2);   /* y [ix1..ix2] */
void Graphics_function16 (Graphics me, int16_t y [], int stagger, long ix1, long ix2, double x1, double x2);
	/* y [ix1..ix2] or y [ix1*2..ix2*2] */
void Graphics_circle (Graphics me, double x, double y, double r);
void Graphics_fillCircle (Graphics me, double x, double y, double r);
void Graphics_circle_mm (Graphics me, double x, double y, double d);
void Graphics_fillCircle_mm (Graphics me, double x, double y, double d);
void Graphics_rectangle_mm (Graphics me, double x, double y, double horizontalSide_mm, double verticalSide_mm);
void Graphics_fillRectangle_mm (Graphics me, double x, double y, double horizontalSide_mm, double verticalSide_mm);
void Graphics_arc (Graphics me, double x, double y, double r, double fromAngle, double toAngle);
void Graphics_fillArc (Graphics me, double x, double y, double r, double fromAngle, double toAngle);
void Graphics_ellipse (Graphics me, double x1, double x2, double y1, double y2);
void Graphics_fillEllipse (Graphics me, double x1, double x2, double y1, double y2);
void Graphics_arrow (Graphics me, double x1, double y1, double x2, double y2);
void Graphics_doubleArrow (Graphics me, double x1, double y1, double x2, double y2);
void Graphics_arcArrow (Graphics me, double x, double y, double r, double fromAngle, double toAngle, int arrowAtStart, int arrowAtEnd);
void Graphics_mark (Graphics me, double x, double y, double size_mm, const wchar_t *markString);
void Graphics_button (Graphics me, double x1, double x2, double y1, double y2);
void Graphics_innerRectangle (Graphics me, double x1, double x2, double y1, double y2);

extern Graphics_Colour Graphics_BLACK, Graphics_WHITE, Graphics_RED, Graphics_GREEN, Graphics_BLUE,
	Graphics_CYAN, Graphics_MAGENTA, Graphics_YELLOW, Graphics_MAROON, Graphics_LIME, Graphics_NAVY, Graphics_TEAL,
	Graphics_PURPLE, Graphics_OLIVE, Graphics_PINK, Graphics_SILVER, Graphics_GREY;
const wchar_t * Graphics_Colour_name (Graphics_Colour colour);
static inline bool Graphics_Colour_equal (Graphics_Colour colour1, Graphics_Colour colour2) {
	return colour1. red == colour2. red && colour1. green == colour2. green && colour1. blue == colour2. blue;
}
void Graphics_setColour (Graphics me, Graphics_Colour colour);
void Graphics_setGrey (Graphics me, double grey);

void Graphics_xorOn (Graphics me, Graphics_Colour colour);
void Graphics_xorOff (Graphics me);
void Graphics_highlight (Graphics me, double x1, double x2, double y1, double y2);
void Graphics_unhighlight (Graphics me, double x1, double x2, double y1, double y2);
void Graphics_highlight2 (Graphics me, double x1, double x2, double y1, double y2,
	double innerX1, double innerX2, double innerY1, double innerY2);
void Graphics_unhighlight2 (Graphics me, double x1, double x2, double y1, double y2,
	double innerX1, double innerX2, double innerY1, double innerY2);

#define Graphics_NOCHANGE  -1
#define Graphics_LEFT  kGraphics_horizontalAlignment_LEFT
#define Graphics_CENTRE  kGraphics_horizontalAlignment_CENTRE
#define Graphics_RIGHT  kGraphics_horizontalAlignment_RIGHT
#define Graphics_BOTTOM  0
#define Graphics_HALF  1
#define Graphics_TOP  2
#define Graphics_BASELINE  3
void Graphics_setTextAlignment (Graphics me, int horizontal, int vertical);
void Graphics_setFont (Graphics me, enum kGraphics_font font);
void Graphics_setFontSize (Graphics me, int height);
void Graphics_setFontStyle (Graphics me, int style);
void Graphics_setItalic (Graphics me, bool onoff);
void Graphics_setBold (Graphics me, bool onoff);
void Graphics_setCode (Graphics me, bool onoff);
#define Graphics_NORMAL  0
#define Graphics_BOLD  1
#define Graphics_ITALIC  2
#define Graphics_BOLD_ITALIC  3
#define Graphics_CODE  4
void Graphics_setTextRotation (Graphics me, double angle);
void Graphics_setTextRotation_vector (Graphics me, double dx, double dy);
void Graphics_setWrapWidth (Graphics me, double wrapWidth);
void Graphics_setSecondIndent (Graphics me, double indent);
double Graphics_inqTextX (Graphics me);
double Graphics_inqTextY (Graphics me);
typedef struct { double x1, x2, y1, y2; wchar_t *name; } Graphics_Link;
int Graphics_getLinks (Graphics_Link **plinks);
void Graphics_setNumberSignIsBold (Graphics me, bool isBold);
void Graphics_setPercentSignIsItalic (Graphics me, bool isItalic);
void Graphics_setCircumflexIsSuperscript (Graphics me, bool isSuperscript);
void Graphics_setUnderscoreIsSubscript (Graphics me, bool isSubscript);
void Graphics_setDollarSignIsCode (Graphics me, bool isCode);
void Graphics_setAtSignIsLink (Graphics me, bool isLink);

void Graphics_setLineType (Graphics me, int lineType);
#define Graphics_DRAWN  0
#define Graphics_DOTTED  1
#define Graphics_DASHED  2
#define Graphics_DASHED_DOTTED  3
void Graphics_setLineWidth (Graphics me, double lineWidth);
void Graphics_setArrowSize (Graphics me, double arrorSize);

void Graphics_inqViewport (Graphics me, double *x1NDC, double *x2NDC, double *y1NDC, double *y2NDC);
void Graphics_inqWindow (Graphics me, double *x1WC, double *x2WC, double *y1WC, double *y2WC);
enum kGraphics_font Graphics_inqFont (Graphics me);
int Graphics_inqFontSize (Graphics me);
int Graphics_inqFontStyle (Graphics me);
int Graphics_inqLineType (Graphics me);
double Graphics_inqLineWidth (Graphics me);
double Graphics_inqArrowSize (Graphics me);
Graphics_Colour Graphics_inqColour (Graphics me);

void Graphics_contour (Graphics me, double **z,
	long ix1, long ix2, double x1WC, double x2WC, long iy1, long iy2, double y1WC, double y2WC, double height);
void Graphics_altitude (Graphics me, double **z,
	long ix1, long ix2, double x1, double x2, long iy1, long iy2, double y1, double y2, int numberOfBorders, double borders []);
void Graphics_grey (Graphics me, double **z,
	long ix1, long ix2, double x1, double x2, long iy1, long iy2, double y1, double y2, int numberOfBorders, double borders []);
#define Graphics_gray Graphics_grey
void Graphics_surface (Graphics me, double **z, long ix1, long ix2, double x1, double x2,
	long iy1, long iy2, double y1, double y2, double minimum, double maximum, double elevation, double azimuth);

void Graphics_setInner (Graphics me);
void Graphics_unsetInner (Graphics me);
void Graphics_drawInnerBox (Graphics me);
void Graphics_textLeft (Graphics me, bool far, const wchar_t *text);
void Graphics_textRight (Graphics me, bool far, const wchar_t *text);
void Graphics_textBottom (Graphics me, bool far, const wchar_t *text);
void Graphics_textTop (Graphics me, bool far, const wchar_t *text);
void Graphics_marksLeft (Graphics me, int numberOfMarks, bool haveNumbers, bool haveTicks, bool haveDottedLines);
void Graphics_marksRight (Graphics me, int numberOfMarks, bool haveNumbers, bool haveTicks, bool haveDottedLines);
void Graphics_marksBottom (Graphics me, int numberOfMarks, bool haveNumbers, bool haveTicks, bool haveDottedLines);
void Graphics_marksTop (Graphics me, int numberOfMarks, bool haveNumbers, bool haveTicks, bool haveDottedLines);
void Graphics_marksLeftLogarithmic (Graphics me, int numberOfMarksPerDecade, bool haveNumbers, bool haveTicks, bool haveDottedLines);
void Graphics_marksRightLogarithmic (Graphics me, int numberOfMarksPerDecade, bool haveNumbers, bool haveTicks, bool haveDottedLines);
void Graphics_marksBottomLogarithmic (Graphics me, int numberOfMarksPerDecade, bool haveNumbers, bool haveTicks, bool haveDottedLines);
void Graphics_marksTopLogarithmic (Graphics me, int numberOfMarksPerDecade, bool haveNumbers, bool haveTicks, bool haveDottedLines);
void Graphics_markLeft (Graphics me, double yWC, bool hasNumber, bool hasTick, bool hasDottedLine, const wchar_t *text);
void Graphics_markRight (Graphics me, double yWC, bool hasNumber, bool hasTick, bool hasDottedLine, const wchar_t *text);
void Graphics_markBottom (Graphics me, double xWC, bool hasNumber, bool hasTick, bool hasDottedLine, const wchar_t *text);
void Graphics_markTop (Graphics me, double xWC, bool hasNumber, bool hasTick, bool hasDottedLine, const wchar_t *text);
void Graphics_markLeftLogarithmic (Graphics me, double y /* > 0 */, bool hasNumber, bool hasTick, bool hasDottedLine, const wchar_t *text);
void Graphics_markRightLogarithmic (Graphics me, double y, bool hasNumber, bool hasTick, bool hasDottedLine, const wchar_t *text);
void Graphics_markBottomLogarithmic (Graphics me, double x, bool hasNumber, bool hasTick, bool hasDottedLine, const wchar_t *text);
void Graphics_markTopLogarithmic (Graphics me, double x, bool hasNumber, bool hasTick, bool hasDottedLine, const wchar_t *text);
void Graphics_marksLeftEvery (Graphics me, double units, double distance, bool haveNumbers, bool haveTicks, bool haveDottedLines);
void Graphics_marksRightEvery (Graphics me, double units, double distance, bool haveNumbers, bool haveTicks, bool haveDottedLines);
void Graphics_marksBottomEvery (Graphics me, double units, double distance, bool haveNumbers, bool haveTicks, bool haveDottedLines);
void Graphics_marksTopEvery (Graphics me, double units, double distance, bool haveNumbers, bool haveTicks, bool haveDottedLines);

void *Graphics_x_getCR (Graphics me);
void Graphics_x_setCR (Graphics me, void *cr);
void *Graphics_x_getGC (Graphics me);

bool Graphics_startRecording (Graphics me);
bool Graphics_stopRecording (Graphics me);
void Graphics_clearRecording (Graphics me);
void Graphics_play (Graphics from, Graphics to);
void Graphics_writeRecordings (Graphics me, FILE *f);
void Graphics_readRecordings (Graphics me, FILE *f);
void Graphics_markGroup (Graphics me);
void Graphics_undoGroup (Graphics me);

double Graphics_dxMMtoWC (Graphics me, double dx_mm);
double Graphics_dyMMtoWC (Graphics me, double dy_mm);
double Graphics_distanceWCtoMM (Graphics me, double x1WC, double y1WC, double x2WC, double y2WC);
double Graphics_dxWCtoMM (Graphics me, double dxWC);
double Graphics_dyWCtoMM (Graphics me, double dyWC);

bool Graphics_mouseStillDown (Graphics me);
void Graphics_waitMouseUp (Graphics me);
void Graphics_getMouseLocation (Graphics me, double *xWC, double *yWC);

void Graphics_nextSheetOfPaper (Graphics me);

/* End of file Graphics.h */
#endif