src/meta/implot.c

#ifndef lint
static const char       RCSid[] = "$Id: implot.c,v 1.1 2003/02/22 02:07:26 greg Exp $";
#endif
/*
 *   Impress plotting functions
 *
 *      1/2/86
 */


#include  "meta.h"

#include  "plot.h"

#include  "imPfuncs.h"

#include  "imPcodes.h"

#include  <ctype.h>


#define  mapx(x)  CONV(x,dxsize)
#define  mapy(y)  CONV(y,dysize)

#define  DPI  296               /* dots per inch for imagen */

#define  TexFamily  90          /* family for texture glyphs */

                                /* operation codes for graphics */
#define  whiteOp  0
#define  shadeOp  3
#define  orOp  7
#define  blackOp  15

                                /* imagen resident fonts */
static struct {
        char  *name;            /* font name */
        int  iwspace;           /* interword spacing */
        short  loaded;          /* boolean true if font loaded */
} font[] = {
        {"cour07", 21, FALSE},
        {"cour08", 24, FALSE},
        {"cour10", 30, FALSE},
        {"cour12", 36, FALSE},
        {"cour14", 42, FALSE},
        {"zurm20", 60, FALSE}
};

                                /* map from our matrix string types */
static int  fontmap[16] = {3,4,4,5,2,4,4,5,1,2,2,3,0,2,2,3};

int  dxsize, dysize;            /* page size */

static void settex(int  pp);
static void setpen(register int  ps);


void
imInit(void)            /* initialize imagen */
{

    imout = stdout;

    fputs("@document(language imPress)", imout);
    fputs("@document(pagereversal off)", imout);

    imSetPum(0);                        /* new path deletes old one */
    dxsize = dysize = 8 * DPI;          /* square on 8.5 X 11 in. paper */
    imSetAbsH(DPI/4);                   /* .25 in. on left and right */
    imSetAbsV(dysize);
    imSetHVSystem(3, 3, 4);             /* conventional orientation */

}


void
printstr(               /* output a string */
        register PRIMITIVE  *p
)

{
    static int  curfont = -1;
    int  fn;
    register char  *cp;

    fn = fontmap[(p->arg0 >> 2) & 017];         /* get font number */
                                                /* set font */
    if (fn != curfont) {
        imSetFamily(fn);
        if (!font[fn].loaded) {
            imCreateFamilyTable(fn, 1, 0, font[fn].name);
            font[fn].loaded = TRUE;
        }
        imSetSp(font[fn].iwspace);
        curfont = fn;
    }

    imSetAbsH(mapx(p->xy[XMN]));        /* set page position */
    imSetAbsV(mapy(p->xy[YMN]));

    for (cp = p->args; *cp; cp++)       /* write out the string */
        if (isspace(*cp))
            imSp();
        else
            im_putbyte(*cp);

}


void
plotlseg(               /* plot a line segment */
        register PRIMITIVE  *p
)

{
    int  x1, x2, y1, y2;
    short  pp;

    pp = (p->arg0 >> 4) & 03;
    if (p->arg0 & 0100 && pp != 0)
        pp += 03;
    settex(pp);

    setpen((p->arg0 >> 2) & 03);

    x1 = mapx(p->xy[XMN]);
    x2 = mapx(p->xy[XMX]);

    if (p->arg0 & 0100) {
        y1 = mapy(p->xy[YMX]);
        y2 = mapy(p->xy[YMN]);
    } else {
        y1 = mapy(p->xy[YMN]);
        y2 = mapy(p->xy[YMX]);
    }

    imCreatePath(2, x1, y1, x2, y2);
    imDrawPath(orOp);

}


void
setfill(                        /* set filling mode */
        register int  a0
)

{

    settex(pati[(a0 >> 2) & 03]);

}


void
setpen(                 /* set pen size to ps */
        register int  ps
)

{
    static int  curpsiz = -1;           /* current pen size */

    if (ps == curpsiz)
        return;

    curpsiz = ps;
    ps = WIDTH(ps);
    ps = CONV(ps, dxsize);
    if (ps < 2)
        ps = 2;
    else if (ps > 20)
        ps = 20;
    imSetPen(ps);

}


void
settex(                 /* set texture pattern to pp */
        int  pp
)

{
    static int  curtex = -1;            /* current texture */
    static short  ploaded[NPATS];       /* booleans for loaded patterns */
    char  span[4];
    int  i, k;
    register int  j;

    if (pp == curtex)                   /* already set */
        return;

    if (pp == 0) {                      /* all black */
        imSetTexture(0, 0);             /* special case */
        curtex = 0;
        return;
    }

    if (pp >= NPATS || !ploaded[pp]) {  /* download texture glyph */
        im_77(imP_BGLY, TexFamily, pp); /* family and member */
        im_putword(32);                 /* advance-width */
        im_putword(32);                 /* width */
        im_putword(0);                  /* left-offset */
        im_putword(32);                 /* height */
        im_putword(0);                  /* top-offset */
        for (i = PATSIZE-1; i >= 0; i--) {
            for (j = 0; j < 4; j++)
                span[j] = 0;
            for (j = 0; j < 32; j++)
                span[j>>3] |= ((pattern[pp][i>>3][j/(32/PATSIZE)]
                                    >> (i&07)) & 01) << (7-(j&07));
            for (k = 0; k < 32/PATSIZE; k++)
                for (j = 0; j < 4; j++)
                    im_putbyte(span[j]);
        }
        if (pp < NPATS)
            ploaded[pp]++;
    }
    imSetTexture(TexFamily, pp);
    curtex = pp;

}


void
fillrect(                       /* fill a rectangle */
        register PRIMITIVE  *p
)

{
    int  left, right, top, bottom;

    left = mapx(p->xy[XMN]);
    right = mapx(p->xy[XMX]);
    top = mapy(p->xy[YMX]);
    bottom = mapy(p->xy[YMN]);

    setfill(p->arg0);
    imCreatePath(4, left, bottom, right, bottom, right, top, left, top);
    imFillPath(orOp);

}


void
filltri(                        /* fill a triangle */
        register PRIMITIVE  *p
)

{
    int  left, right, top, bottom;

    left = mapx(p->xy[XMN]);
    right = mapx(p->xy[XMX]);
    top = mapy(p->xy[YMX]);
    bottom = mapy(p->xy[YMN]);

    setfill(p->arg0);

    switch (p->arg0 & 060) {
    case 0:                     /* right (& down) */
        imCreatePath(3, left, bottom, right, bottom, right, top);
        break;
    case 020:                   /* up */
        imCreatePath(3, right, bottom, right, top, left, top);
        break;
    case 040:                   /* left */
        imCreatePath(3, right, top, left, top, left, bottom);
        break;
    case 060:                   /* down */
        imCreatePath(3, left, top, left, bottom, right, bottom);
        break;
    }
    
    imFillPath(orOp);

}


void
xform(          /* transform a point according to p */
        register int  *xp,
        register int  *yp,
        register PRIMITIVE  *p
)

{
    int  x = 0, y = 0;

    switch (p->arg0 & 060) {
        case 0:                 /* right */
            x = *xp;
            y = *yp;
            break;
        case 020:               /* up */
            x = (XYSIZE-1) - *yp;
            y = *xp;
            break;
        case 040:               /* left */
            x = (XYSIZE-1) - *xp;
            y = (XYSIZE-1) - *yp;
            break;
        case 060:               /* down */
            x = *yp;
            y = (XYSIZE-1) - *xp;
            break;
    }
    
    *xp = CONV(x, p->xy[XMX] - p->xy[XMN]) + p->xy[XMN];
    *yp = CONV(y, p->xy[YMX] - p->xy[YMN]) + p->xy[YMN];

}


void
fillpoly(                       /* fill a polygon */
        register PRIMITIVE  *p
)

{
    int  points[128];
    register int  *pp;
    register char  *s;

    pp = points;

    if ((s = nextscan(nextscan(p->args,"%d",(char*)pp),"%d",(char*)pp+1))==NULL)
        error(USER, "illegal polygon spec in fillpoly");
    
    xform(pp, pp+1, p);
    pp[0] = mapx(pp[0]); pp[1] = mapy(pp[1]);
    pp += 2;
    
    while ((s = nextscan(nextscan(s,"%d",(char*)pp),"%d",(char*)pp+1))!=NULL) {
        xform(pp, pp+1, p);
        pp[0] = mapx(pp[0]); pp[1] = mapy(pp[1]);
        pp += 2;
    }
    pp[0] = points[0]; pp[1] = points[1];
    pp += 2;
    
    settex(p->arg0 & 077);
    imCreatePathV((pp-points)/2, points);
    imFillPath(orOp);

    if (p->arg0 & 0100) {               /* draw border */
        settex(0);
        setpen(0);
        imDrawPath(orOp);
    }
    
}
Revision:	1.2
Committed:	Sat Nov 15 02:13:37 2003 UTC (20 years, 5 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R6P1, rad3R6
Changes since 1.1:	+47 -43 lines
Log Message:	Continued ANSIfication, and reduced other compile warnings.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	1.2	static const char RCSid[] = "$Id: implot.c,v 1.1 2003/02/22 02:07:26 greg Exp $";
3	greg	1.1	#endif
4			/*
5			* Impress plotting functions
6			*
7			* 1/2/86
8			*/
9
10
11			#include "meta.h"
12
13			#include "plot.h"
14
15			#include "imPfuncs.h"
16
17			#include "imPcodes.h"
18
19			#include <ctype.h>
20
21
22			#define mapx(x) CONV(x,dxsize)
23			#define mapy(y) CONV(y,dysize)
24
25			#define DPI 296 /* dots per inch for imagen */
26
27			#define TexFamily 90 /* family for texture glyphs */
28
29			/* operation codes for graphics */
30			#define whiteOp 0
31			#define shadeOp 3
32			#define orOp 7
33			#define blackOp 15
34
35			/* imagen resident fonts */
36			static struct {
37			char name; / font name */
38			int iwspace; /* interword spacing */
39			short loaded; /* boolean true if font loaded */
40			} font[] = {
41			{"cour07", 21, FALSE},
42			{"cour08", 24, FALSE},
43			{"cour10", 30, FALSE},
44			{"cour12", 36, FALSE},
45			{"cour14", 42, FALSE},
46			{"zurm20", 60, FALSE}
47			};
48
49			/* map from our matrix string types */
50			static int fontmap[16] = {3,4,4,5,2,4,4,5,1,2,2,3,0,2,2,3};
51
52			int dxsize, dysize; /* page size */
53
54	schorsch	1.2	static void settex(int pp);
55			static void setpen(register int ps);
56	greg	1.1
57
58	schorsch	1.2
59			void
60			imInit(void) /* initialize imagen */
61	greg	1.1	{
62
63			imout = stdout;
64
65			fputs("@document(language imPress)", imout);
66			fputs("@document(pagereversal off)", imout);
67
68			imSetPum(0); /* new path deletes old one */
69			dxsize = dysize = 8 * DPI; /* square on 8.5 X 11 in. paper */
70			imSetAbsH(DPI/4); /* .25 in. on left and right */
71			imSetAbsV(dysize);
72			imSetHVSystem(3, 3, 4); /* conventional orientation */
73
74			}
75
76
77	schorsch	1.2	void
78			printstr( /* output a string */
79			register PRIMITIVE *p
80			)
81	greg	1.1
82			{
83			static int curfont = -1;
84			int fn;
85			register char *cp;
86
87			fn = fontmap[(p->arg0 >> 2) & 017]; /* get font number */
88			/* set font */
89			if (fn != curfont) {
90			imSetFamily(fn);
91			if (!font[fn].loaded) {
92			imCreateFamilyTable(fn, 1, 0, font[fn].name);
93			font[fn].loaded = TRUE;
94			}
95			imSetSp(font[fn].iwspace);
96			curfont = fn;
97			}
98
99			imSetAbsH(mapx(p->xy[XMN])); /* set page position */
100			imSetAbsV(mapy(p->xy[YMN]));
101
102			for (cp = p->args; cp; cp++) / write out the string */
103			if (isspace(*cp))
104			imSp();
105			else
106			im_putbyte(*cp);
107
108			}
109
110
111
112
113	schorsch	1.2	void
114			plotlseg( /* plot a line segment */
115			register PRIMITIVE *p
116			)
117	greg	1.1
118			{
119			int x1, x2, y1, y2;
120			short pp;
121
122			pp = (p->arg0 >> 4) & 03;
123			if (p->arg0 & 0100 && pp != 0)
124			pp += 03;
125			settex(pp);
126
127			setpen((p->arg0 >> 2) & 03);
128
129			x1 = mapx(p->xy[XMN]);
130			x2 = mapx(p->xy[XMX]);
131
132			if (p->arg0 & 0100) {
133			y1 = mapy(p->xy[YMX]);
134			y2 = mapy(p->xy[YMN]);
135			} else {
136			y1 = mapy(p->xy[YMN]);
137			y2 = mapy(p->xy[YMX]);
138			}
139
140			imCreatePath(2, x1, y1, x2, y2);
141			imDrawPath(orOp);
142
143			}
144
145
146
147	schorsch	1.2	void
148			setfill( /* set filling mode */
149			register int a0
150			)
151	greg	1.1
152			{
153
154			settex(pati[(a0 >> 2) & 03]);
155
156			}
157
158
159	schorsch	1.2	void
160			setpen( /* set pen size to ps */
161			register int ps
162			)
163	greg	1.1
164			{
165			static int curpsiz = -1; /* current pen size */
166
167			if (ps == curpsiz)
168			return;
169
170			curpsiz = ps;
171			ps = WIDTH(ps);
172			ps = CONV(ps, dxsize);
173			if (ps < 2)
174			ps = 2;
175			else if (ps > 20)
176			ps = 20;
177			imSetPen(ps);
178
179			}
180
181
182	schorsch	1.2	void
183			settex( /* set texture pattern to pp */
184			int pp
185			)
186	greg	1.1
187			{
188			static int curtex = -1; /* current texture */
189			static short ploaded[NPATS]; /* booleans for loaded patterns */
190			char span[4];
191			int i, k;
192			register int j;
193
194			if (pp == curtex) /* already set */
195			return;
196
197			if (pp == 0) { /* all black */
198			imSetTexture(0, 0); /* special case */
199			curtex = 0;
200			return;
201			}
202
203			if (pp >= NPATS \|\| !ploaded[pp]) { /* download texture glyph */
204			im_77(imP_BGLY, TexFamily, pp); /* family and member */
205			im_putword(32); /* advance-width */
206			im_putword(32); /* width */
207			im_putword(0); /* left-offset */
208			im_putword(32); /* height */
209			im_putword(0); /* top-offset */
210			for (i = PATSIZE-1; i >= 0; i--) {
211			for (j = 0; j < 4; j++)
212			span[j] = 0;
213			for (j = 0; j < 32; j++)
214			span[j>>3] \|= ((pattern[pp][i>>3][j/(32/PATSIZE)]
215			>> (i&07)) & 01) << (7-(j&07));
216			for (k = 0; k < 32/PATSIZE; k++)
217			for (j = 0; j < 4; j++)
218			im_putbyte(span[j]);
219			}
220			if (pp < NPATS)
221			ploaded[pp]++;
222			}
223			imSetTexture(TexFamily, pp);
224			curtex = pp;
225
226			}
227
228
229	schorsch	1.2	void
230			fillrect( /* fill a rectangle */
231			register PRIMITIVE *p
232			)
233	greg	1.1
234			{
235			int left, right, top, bottom;
236
237			left = mapx(p->xy[XMN]);
238			right = mapx(p->xy[XMX]);
239			top = mapy(p->xy[YMX]);
240			bottom = mapy(p->xy[YMN]);
241
242			setfill(p->arg0);
243			imCreatePath(4, left, bottom, right, bottom, right, top, left, top);
244			imFillPath(orOp);
245
246			}
247
248
249	schorsch	1.2	void
250			filltri( /* fill a triangle */
251			register PRIMITIVE *p
252			)
253	greg	1.1
254			{
255			int left, right, top, bottom;
256
257			left = mapx(p->xy[XMN]);
258			right = mapx(p->xy[XMX]);
259			top = mapy(p->xy[YMX]);
260			bottom = mapy(p->xy[YMN]);
261
262			setfill(p->arg0);
263
264			switch (p->arg0 & 060) {
265			case 0: /* right (& down) */
266			imCreatePath(3, left, bottom, right, bottom, right, top);
267			break;
268			case 020: /* up */
269			imCreatePath(3, right, bottom, right, top, left, top);
270			break;
271			case 040: /* left */
272			imCreatePath(3, right, top, left, top, left, bottom);
273			break;
274			case 060: /* down */
275			imCreatePath(3, left, top, left, bottom, right, bottom);
276			break;
277			}
278
279			imFillPath(orOp);
280
281			}
282
283
284
285	schorsch	1.2	void
286			xform( /* transform a point according to p */
287			register int *xp,
288			register int *yp,
289			register PRIMITIVE *p
290			)
291	greg	1.1
292			{
293	schorsch	1.2	int x = 0, y = 0;
294	greg	1.1
295			switch (p->arg0 & 060) {
296			case 0: /* right */
297			x = *xp;
298			y = *yp;
299			break;
300			case 020: /* up */
301			x = (XYSIZE-1) - *yp;
302			y = *xp;
303			break;
304			case 040: /* left */
305			x = (XYSIZE-1) - *xp;
306			y = (XYSIZE-1) - *yp;
307			break;
308			case 060: /* down */
309			x = *yp;
310			y = (XYSIZE-1) - *xp;
311			break;
312			}
313
314			*xp = CONV(x, p->xy[XMX] - p->xy[XMN]) + p->xy[XMN];
315			*yp = CONV(y, p->xy[YMX] - p->xy[YMN]) + p->xy[YMN];
316
317			}
318
319
320	schorsch	1.2	void
321			fillpoly( /* fill a polygon */
322			register PRIMITIVE *p
323			)
324	greg	1.1
325			{
326			int points[128];
327			register int *pp;
328			register char *s;
329
330			pp = points;
331
332	schorsch	1.2	if ((s = nextscan(nextscan(p->args,"%d",(char)pp),"%d",(char)pp+1))==NULL)
333	greg	1.1	error(USER, "illegal polygon spec in fillpoly");
334
335			xform(pp, pp+1, p);
336			pp[0] = mapx(pp[0]); pp[1] = mapy(pp[1]);
337			pp += 2;
338
339	schorsch	1.2	while ((s = nextscan(nextscan(s,"%d",(char)pp),"%d",(char)pp+1))!=NULL) {
340	greg	1.1	xform(pp, pp+1, p);
341			pp[0] = mapx(pp[0]); pp[1] = mapy(pp[1]);
342			pp += 2;
343			}
344			pp[0] = points[0]; pp[1] = points[1];
345			pp += 2;
346
347			settex(p->arg0 & 077);
348			imCreatePathV((pp-points)/2, points);
349			imFillPath(orOp);
350
351			if (p->arg0 & 0100) { /* draw border */
352			settex(0);
353			setpen(0);
354			imDrawPath(orOp);
355			}
356
357			}