plot.h

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#ifndef PLOTH
#define PLOTH 

#include <stdio.h>

/************************************************************************************/
#define SOLID_LINE   0

#define DASHED_LINE  1

#define DOTTED_LINE 2
/************************************************************************************/

typedef struct {
  FILE *f; 
  double offset_x; 
  double offset_y; 
  unsigned int line_style; 
  unsigned int line_width; 
  int fill_color; 
  int pen_color; 
  int fill_intensity; 
  int depth; 
} Tplot;

void InitPlot(const char *name,Tplot *p);

void SetLineWidth(unsigned int width,Tplot *p);
void SetLineStyle(unsigned int style,Tplot *p);
void SetOrigin(double offset_x,double offset_y,Tplot *p);
void SetPenColor(int color,Tplot *p);
void SetFillColor(int color,Tplot *p);

void SetFillIntensity(unsigned int intensity,Tplot *p);
void SetDepth(unsigned int depth,Tplot *p);

void PlotCircle(double cx,double cy,double r,Tplot *p);
void PlotRectangle(double x_left,double y_sup,double x_right,double y_inf,Tplot *p);
void PlotTriangle(double x1,double y1,double x2,double y2,double x3,double y3,Tplot *p);

void PlotLine(double x0,double y0,double x1,double y1,Tplot *p);
void PlotArrow(double x0,double y0,double x1,double y1,Tplot *p);
void PlotText(double x,double y,const char *text,Tplot *p);
void PlotAxis(const char *nx,double min_x,double max_x,
              const char *ny,double min_y,double max_y,
              double step,
              Tplot *p);

void ClosePlot(Tplot *p);

#endif