1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: sgp.h,v 1.9 2000/06/15 19:07:10 kevin Exp $
7 ** This program is free software; you can redistribute it and/or modify
8 ** it under the terms of the GNU General Public License (version 2) as
9 ** published by the Free Software Foundation.
11 ** This program is distributed in the hope that it will be useful,
12 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ** GNU General Public License for more details.
16 ** You should have received a copy of the GNU General Public License
17 ** along with this program; if not, write to the Free Software
18 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 ******************************************************************************/
21 /*----------------------------------------------------------------------*/
22 /* Standard Graphics Package Header File */
23 /*----------------------------------------------------------------------*/
52 #define LS_SOLID 0xffff
53 #define LS_DASH1 0xff00
54 #define LS_DASH2 0xf0f0
55 #define LS_DASH3 0xcccc
56 #define LS_DASH4 0xff3e
57 #define LS_DOTTED 0xaaaa
64 struct sgp_window_st {
65 int pw_xsize; /* Physical Window size */
69 double xw_min; /* Window extents */
73 double xv_min; /* Viewport extents */
77 double view[4]; /* Viewport array for clip_rect() */
78 double curx; /* Current stylus position in world coords */
82 GRFMTX_2D wc_to_ndc_x; /* World coord to NDC matrix */
83 GRFMTX_2D mc_to_ndc_x; /* Master to NDC */
84 GRFMTX_2D ndc_to_mc_x; /* NDC to Master */
85 GRFMTX_2D ctm_2_x; /* Current transfromation matrix */
91 typedef struct sgp_window_st SGP_WINDOW;
92 typedef struct sgp_window_st *SGP_ID;
95 int open; /* TRUE if device is open for output */
96 int xsize, ysize; /* Size of device in pixels */
97 int xmin, ymin; /* smallest coordinates */
98 int xmax, ymax; /* Maximum coordinates */
99 int colormax; /* Maximum color number of device */
100 int style; /* Current linestyle of device */
101 int width; /* Current width of device */
102 int color; /* Current color of device */
103 int icurx, icury; /* Current position */
104 int icwidth, icheight; /* Size of characters in pixels */
105 int cfore, cback; /* Character foregnd & backgnd colors */
106 float asp; /* Aspect ratio. Multipy x coord */
107 int (*dotfunc)(int x1, int y1, int color); /* Dot function for device */
108 int (*linefunc)(int x1, int y1, int x2, int y2, int color); /* Line function for device */
109 unsigned int nbytes; /* Size of buffer in bytes */
110 char *buf; /* Pointer to buffer */
111 unsigned int bufseg, bufoff; /* Buffer memory location */
112 int mode; /* Device mode */
116 float width, height; /* size of characters in NDC */
117 float textangle; /* text angle in radians */
118 float charupangle; /* character up angle */
119 int font; /* font for characters */
120 int updir, textdir; /* text direct & character orientation */
121 int fore, back; /* foreground & background color */
122 /* if back = -1, then transparent back */
126 int foregnd, backgnd; /* current foregound & background colors */
127 int linestyle; /* current 16 bit linestyle */
128 int linewidth; /* current width of line (in pixels) */
129 int marktype; /* current marker type */
130 int markcolor; /* current marker color */
131 float xndc, yndc; /* current position in NDC */
134 typedef struct device_st DEVICE;
135 typedef struct charsp_st CHARSPEC;
136 typedef struct state_st GRFSTATE;
138 struct point {double x, y, z;};
143 /* Flagcodes for motion directions */
144 #define XPLUS 001 /* right */
145 #define XMINUS 002 /* left */
146 #define YPLUS 004 /* up */
147 #define YMINUS 010 /* down */
149 /* Codes for marker symbols */
150 #define POINT 0 /* small dot */
151 #define SQUARE 1 /* empty square */
152 #define FSQUARE 2 /* filled square */
153 #define DIAMOND 3 /* empty diamond */
154 #define FDIAMOND 4 /* filled diamond */
155 #define CROSS 5 /* cross */
156 #define XCROSS 6 /* x */
157 #define CERCLE 7 /* open circle */
158 #define FCERCLE 8 /* filled circle */
159 #define BSQUARE 9 /* big open square */
160 #define BDIAMOND 10 /* big open diamond */
162 #define NMARKERS 11 /* Number of available symbol types */
164 /*-------------------------------------------------------------------------*/
166 #define PSET 0 /* codes for raster merging */
172 /*-------------------------------------------------------------------------*/
175 void sgp2_draw_circle(const double r);
176 void sgp2_draw_arc(double start, double stop, const double r);
179 void ctm_xlat_pre_2(double x, double y);
180 void ctm_xlat_post_2(double x, double y);
181 void ctm_scale_pre_2(double sx, double sy);
182 void ctm_scale_post_2(double sx, double sy);
183 void ctm_rotate_pre_2(double theta);
184 void ctm_rotate_post_2(double theta);
185 void ctm_shear_pre_2(double shrx, double shry);
186 void ctm_shear_post_2(double shrx, double shry);
187 void xlat_gmtx_2(GRFMTX_2D m, double x, double y);
188 void scale_gmtx_2(GRFMTX_2D m, double sx, double sy);
189 void shear_gmtx_2(GRFMTX_2D m, double shrx, double shry);
190 void rotate_gmtx_2(GRFMTX_2D m, double theta);
191 void ident_gmtx_2(GRFMTX_2D m);
192 void mult_gmtx_2(GRFMTX_2D a, GRFMTX_2D b, GRFMTX_2D c);
193 void invert_gmtx_2(GRFMTX_2D a, GRFMTX_2D b);
194 double determ_gmtx_2(GRFMTX_2D a);
197 void sgp2_draw_rect (double xmin, double ymin, double xmax, double ymax);
200 SGP_ID sgp2_init (int xsize, int ysize, const char *title);
201 void sgp2_close (SGP_ID gid);
202 void sgp2_set_active_win (SGP_ID);
203 SGP_ID sgp2_get_active_win (void);
204 void sgp2_clear (void);
205 void sgp2_window(double xmin, double ymin, double xmax, double ymax);
206 void sgp2_viewport(double xmin, double ymin, double xmax, double ymax);
207 void sgp2_frame_vpt(void);
208 void calc_wc_to_ndc(void);
209 void calc_ndc_to_mc(void);
210 void wc_to_ndc(double xw, double yw, double *xn, double *yn);
211 void ndc_to_wc(double xn, double yn, double *xw, double *yw);
212 void sgp2_color(int icol);
213 void sgp2_line_style(int style);
214 void sgp2_line_abs(double x, double y);
215 void sgp2_move_abs(double x, double y);
216 void sgp2_line_rel(double x, double y);
217 void sgp2_move_rel(double x, double y);
218 void sgp2_draw_text(char *message);
219 void sgp2_polyline_abs(double x[], double y[], int n);
220 void sgp2_mark_abs(double x, double y);
221 void sgp2_mark_rel(double x, double y);
222 void sgp2_point_abs(double x, double y);
223 void sgp2_point_rel(double x, double y);
224 void charsize(double wid, double height);
225 void textangle(double angle);
226 void ctm_clr_2(void);
227 void ctm_get_2(GRFMTX_2D m);
228 void ctm_set_2(GRFMTX_2D m);
229 void ctm_pre_mult_2(GRFMTX_2D m);
230 void ctm_post_mult_2(GRFMTX_2D m);
233 int _sgp2_init_dev(SGP_ID gid);
234 int initdevice(int dev, int mode, int xsize, int ysize);
235 int opendevice(int dev);
236 void closedevice(int dev);
237 void termdevice(int dev);
238 void _sgp2_stylus(SGP_ID gid, double x, double y, int beam);
239 void pntndc (SGP_ID gid, double x, double y);
240 void markndc (SGP_ID gid, double x, double y);
241 GRFSTATE *inqstate(void);
242 void gp_set_aspect(int dev, double asp);
243 void setlinestyle(int style);
244 void setlinewidth(int wid);
245 DEVICE *inqdev(int dev);
246 void _sgp2_set_text(SGP_ID gid, double width, double height, double textangle, int font);
247 void settextclr(int fore, int back);
248 void setcolor(int fore);
249 void setbackg(int back);
250 int initmarker(int marker, int color);
251 int settextdir(int direction);
252 void _sgp2_dev_text(SGP_ID gid, char *message);
254 void flushdevice(int dev);
257 void wrtsymbol(int sym, int x, int y, DEVICE *dev);
258 void wrtchar(int ch, int x, int y, CHARSPEC *cspec, DEVICE *dev);
259 void wrttext(char txtstr[], int x, int y, CHARSPEC *cspec, DEVICE *dev);
260 void crtcolor(int mode, int *f, int *b);