struct line_type {
enum { invisible, solid, dotted, dashed } type;
double dash_width;
double thickness;
line_type();
};
class output {
protected:
char *args;
double desired_height; double desired_width; double compute_scale(double, const position &, const position &);
public:
output();
virtual ~output();
void set_desired_width_height(double wid, double ht);
void set_args(const char *);
virtual void start_picture(double sc, const position &ll, const position &ur) = 0;
virtual void finish_picture() = 0;
virtual void circle(const position &, double rad,
const line_type &, double) = 0;
virtual void text(const position &, text_piece *, int, double) = 0;
virtual void line(const position &, const position *, int n,
const line_type &) = 0;
virtual void polygon(const position *, int n,
const line_type &, double) = 0;
virtual void spline(const position &, const position *, int n,
const line_type &) = 0;
virtual void arc(const position &, const position &, const position &,
const line_type &) = 0;
virtual void ellipse(const position &, const distance &,
const line_type &, double) = 0;
virtual void rounded_box(const position &, const distance &, double,
const line_type &, double) = 0;
virtual void command(const char *, const char *, int) = 0;
virtual void set_location(const char *, int) {}
virtual void set_color(char *, char *) = 0;
virtual void reset_color() = 0;
virtual char *get_last_filled() = 0;
virtual char *get_outline_color() = 0;
virtual int supports_filled_polygons();
virtual void begin_block(const position &ll, const position &ur);
virtual void end_block();
};
extern output *out;
#define TEX_SUPPORT 1
output *make_troff_output();
#ifdef TEX_SUPPORT
output *make_tex_output();
output *make_tpic_output();
#endif
#ifdef FIG_SUPPORT
output *make_fig_output();
#endif