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showgl19
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gstructs.h
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C/C++ Source or Header
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1992-03-26
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1KB
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40 lines
/* gstructs.h */
/* definitions of external structures for use in compiling portions of
graphix.c library outside of main body of graphix.c */
/* copyright 1988 - 1992, Robert C. Becker, Lantern Systems */
#ifndef STRCTS_DEFT /* check for existance of previous definitions */
struct hp_position /* public structures for external routines */
{
double xpos, ypos, rpos_x, rpos_y;
};
struct hp_scaling
{
double x_factor, x_offset, y_factor, y_offset, xmax, ymax;
double scr_xmin, scr_ymin;
};
struct hp_misc
{
unsigned max_x_dot, max_y_dot;
double x_ppm, y_ppm, gdu;
int pendown, g_input, mouse_status, degree;
unsigned wht_color;
};
struct w_params /* struct for viewport, limit, & clip params */
{
double xmin, xmax, ymin, ymax;
};
#define STRCTS_DEFT
#endif
extern struct hp_position __x_y_rfs_; /* position info */
extern struct hp_scaling __x_y_sfs_; /* scale factors & offsets */
extern struct hp_misc __gr_msc__; /* miscellaneous */