src/hd/sm_samp.c

/* Copyright (c) 1998 Silicon Graphics, Inc. */

#ifndef lint
static char SCCSid[] = "$SunId$ SGI";
#endif

/*
 * sm_samp.c
 */
#include "standard.h"

#include "sm.h"

RSAMP rsL;


#define SAMPSIZ (3*sizeof(float)+sizeof(int4)+\
                        sizeof(TMbright)+6*sizeof(BYTE))
/* Initialize/clear global smL sample list for at least n samples */
int
smAlloc_samples(sm,n,extra_points)
SM *sm;
register int n,extra_points;
{
  unsigned nbytes;
  register unsigned     i;
  RSAMP *rs;

  rs = &rsL;

  SM_SAMP(sm) = rs;

  /* round space up to nearest power of 2 */
  nbytes = n*SAMPSIZ + extra_points*SM_POINTSIZ + 8;
  for (i = 1024; nbytes > i; i <<= 1)
                ;
  n = (i - 8 - extra_points*SM_POINTSIZ) / SAMPSIZ;     

  RS_BASE(rs) = (char *)malloc(n*SAMPSIZ + extra_points*SM_POINTSIZ);
  if (!RS_BASE(rs))
    error(SYSTEM,"smInit_samples(): Unable to allocate memory");

  /* assign larger alignment types earlier */
  RS_W_PT(rs) = (float (*)[3])RS_BASE(rs);
  RS_W_DIR(rs) = (int4 *)(RS_W_PT(rs) + n + extra_points);
  RS_BRT(rs) = (TMbright *)(RS_W_DIR(rs) + n + extra_points);
  RS_CHR(rs) = (BYTE (*)[3])(RS_BRT(rs) + n);
  RS_RGB(rs) = (BYTE (*)[3])(RS_CHR(rs) + n);
  RS_MAX_SAMP(rs) = n;
  RS_MAX_AUX_PT(rs) = n + extra_points;

  smClear_samples(sm);

  return(n);
}

smClear_aux_samples(sm)
SM *sm;
{
  RS_NEXT_AUX_PT(SM_SAMP(sm)) = RS_MAX_SAMP(SM_SAMP(sm));
}

int
smClear_samples(sm)
     SM *sm;
{
  RSAMP *samp;

  samp = SM_SAMP(sm);
  RS_FREE_SAMP(samp) = -1;
  RS_REPLACE_SAMP(samp) = 0;
  RS_NUM_SAMP(samp) = 0;
  RS_TONE_MAP(samp) = 0;
  smClear_aux_samples(sm);
  return(1);
}

int
smAdd_aux_point(sm,v,d)
     SM *sm;
     FVECT v,d;
{
    RSAMP *samp;
    int id;
    
    /* Get the SM sample array */    
    samp = SM_SAMP(sm);
    /* Get pointer to next available point */
    id = RS_NEXT_AUX_PT(samp);
    if(id >= RS_MAX_AUX_PT(samp))
       return(-1);

    /* Update free aux pointer */
    RS_NEXT_AUX_PT(samp)++;

    /* Copy vector into point */
    VCOPY(RS_NTH_W_PT(samp,id),v);
    RS_NTH_W_DIR(samp,id) = encodedir(d);
    return(id);
}

void
smInit_sample(sm,id,c,d,p)
   SM *sm;
   int id;
   COLR c;
   FVECT d,p;
{
   RSAMP *samp;

   samp = SM_SAMP(sm);
    if(p)
   {
       /* Copy vector into point */
       VCOPY(RS_NTH_W_PT(samp,id),p);
       RS_NTH_W_DIR(samp,id) = encodedir(d);
   }
    else
       {
           VADD(RS_NTH_W_PT(samp,id),d,SM_VIEW_CENTER(sm));
           RS_NTH_W_DIR(samp,id) = -1;
       }
    
#ifndef TEST_DRIVER
    tmCvColrs(&RS_NTH_BRT(samp,id),RS_NTH_CHR(samp,id),c,1);
#else
    if(c)
    {
        RS_NTH_RGB(samp,id)[0] = c[0];
        RS_NTH_RGB(samp,id)[1] = c[1];
        RS_NTH_RGB(samp,id)[2] = c[2];
    }
    else
    { 
        RS_NTH_RGB(samp,id)[0] = 100;
       RS_NTH_RGB(samp,id)[1] = 0;
       RS_NTH_RGB(samp,id)[2] = 0;
    }
#endif
}


void
smReset_sample(sm,id,n_id)
   SM *sm;
   int id,n_id;
{
   RSAMP *samp;

   samp = SM_SAMP(sm);
    
    /* Copy vector into point */
    VCOPY(RS_NTH_W_PT(samp,id),RS_NTH_W_PT(samp,n_id));
    RS_NTH_W_DIR(samp,id) = RS_NTH_W_DIR(samp,n_id);

    RS_NTH_BRT(samp,id) = RS_NTH_BRT(samp,n_id);
    RS_NTH_CHR(samp,id)[0] = RS_NTH_CHR(samp,n_id)[0];
    RS_NTH_CHR(samp,id)[1] = RS_NTH_CHR(samp,n_id)[1];
    RS_NTH_CHR(samp,id)[2] = RS_NTH_CHR(samp,n_id)[2];
    RS_NTH_RGB(samp,id)[0] = RS_NTH_RGB(samp,n_id)[0];
    RS_NTH_RGB(samp,id)[1] = RS_NTH_RGB(samp,n_id)[1];
    RS_NTH_RGB(samp,id)[2] = RS_NTH_RGB(samp,n_id)[2];

}

int
rsAlloc_samp(samp,replaced)
   RSAMP *samp;
   int *replaced;
   
{
    int id;

    if(replaced)
       *replaced = FALSE;
    if(RS_NUM_SAMP(samp) < RS_MAX_SAMP(samp))
    {
        id = RS_NUM_SAMP(samp);
        RS_NUM_SAMP(samp)++;
        
    }
    else
       if(RS_REPLACE_SAMP(samp) != -1)
        {
            id = RS_REPLACE_SAMP(samp);
            /* NOTE: NEED to do LRU later*/
            RS_REPLACE_SAMP(samp) = (id + 1)% RS_MAX_SAMP(samp);
            if(replaced)
               *replaced = TRUE;
        }
       else
          if(RS_FREE_SAMP(samp) != -1)
             {
                 id = RS_FREE_SAMP(samp);
                 RS_FREE_SAMP(samp) = RS_NTH_W_DIR(samp,id);
             }
          else
             {
#ifdef DEBUG
                 eputs("rsAlloc_samp(): no samples available");
#endif
                 id = -1;
             }
    
    return(id);
}

int
rsDelete_sample(samp,id)
RSAMP *samp;
int id;
{
    /* First check for a valid id */
    if(id >= RS_MAX_SAMP(samp) || id < 0)
       return(FALSE);
    
    RS_NTH_W_DIR(samp,id) = RS_FREE_SAMP(samp);
    RS_FREE_SAMP(samp) = id;

    return(TRUE);
}

int
smDelete_sample(sm,id)
SM *sm;
int id;
{
    RSAMP *samp;

    samp = SM_SAMP(sm);
    return(rsDelete_sample(samp,id));
}

/* NEEDS: to add free list- and bit for clocked LRU  */
int
smAdd_sample_point(sm,c,dir,p)
     SM *sm;
     COLR c;
     FVECT dir;
     FVECT p;

{
    RSAMP *samp;
    int id;
    int replaced;
    
    /* Get the SM sample array */    
    samp = SM_SAMP(sm);
    /* Get pointer to next available point */
    id = rsAlloc_samp(samp,&replaced);
    if(id < 0)
       return(-1);

    if(replaced)
       smMesh_remove_vertex(sm,id);
    
    smInit_sample(sm,id,c,dir,p);

    return(id);
}


Revision:	3.2
Committed:	Fri Sep 11 11:52:27 1998 UTC (25 years, 7 months ago) by gwlarson
Content type:	text/plain
Branch:	MAIN
Changes since 3.1:	+2 -2 lines
Log Message:	fixed triangle insertion using edge tracing
#	User	Rev	Content
1	gwlarson	3.1	/* Copyright (c) 1998 Silicon Graphics, Inc. */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ SGI";
5			#endif
6
7			/*
8			* sm_samp.c
9			*/
10			#include "standard.h"
11
12			#include "sm.h"
13
14			RSAMP rsL;
15
16
17			#define SAMPSIZ (3*sizeof(float)+sizeof(int4)+\
18			sizeof(TMbright)+6*sizeof(BYTE))
19			/* Initialize/clear global smL sample list for at least n samples */
20			int
21			smAlloc_samples(sm,n,extra_points)
22			SM *sm;
23			register int n,extra_points;
24			{
25			unsigned nbytes;
26			register unsigned i;
27			RSAMP *rs;
28
29			rs = &rsL;
30
31			SM_SAMP(sm) = rs;
32
33			/* round space up to nearest power of 2 */
34			nbytes = nSAMPSIZ + extra_pointsSM_POINTSIZ + 8;
35			for (i = 1024; nbytes > i; i <<= 1)
36			;
37			n = (i - 8 - extra_points*SM_POINTSIZ) / SAMPSIZ;
38
39			RS_BASE(rs) = (char )malloc(nSAMPSIZ + extra_points*SM_POINTSIZ);
40			if (!RS_BASE(rs))
41			error(SYSTEM,"smInit_samples(): Unable to allocate memory");
42
43			/* assign larger alignment types earlier */
44			RS_W_PT(rs) = (float (*)[3])RS_BASE(rs);
45			RS_W_DIR(rs) = (int4 *)(RS_W_PT(rs) + n + extra_points);
46			RS_BRT(rs) = (TMbright *)(RS_W_DIR(rs) + n + extra_points);
47			RS_CHR(rs) = (BYTE (*)[3])(RS_BRT(rs) + n);
48			RS_RGB(rs) = (BYTE (*)[3])(RS_CHR(rs) + n);
49			RS_MAX_SAMP(rs) = n;
50			RS_MAX_AUX_PT(rs) = n + extra_points;
51
52			smClear_samples(sm);
53
54			return(n);
55			}
56
57			smClear_aux_samples(sm)
58			SM *sm;
59			{
60			RS_NEXT_AUX_PT(SM_SAMP(sm)) = RS_MAX_SAMP(SM_SAMP(sm));
61			}
62
63			int
64			smClear_samples(sm)
65			SM *sm;
66			{
67			RSAMP *samp;
68
69			samp = SM_SAMP(sm);
70			RS_FREE_SAMP(samp) = -1;
71			RS_REPLACE_SAMP(samp) = 0;
72			RS_NUM_SAMP(samp) = 0;
73			RS_TONE_MAP(samp) = 0;
74			smClear_aux_samples(sm);
75			return(1);
76			}
77
78			int
79			smAdd_aux_point(sm,v,d)
80			SM *sm;
81			FVECT v,d;
82			{
83			RSAMP *samp;
84			int id;
85
86			/* Get the SM sample array */
87			samp = SM_SAMP(sm);
88			/* Get pointer to next available point */
89			id = RS_NEXT_AUX_PT(samp);
90			if(id >= RS_MAX_AUX_PT(samp))
91			return(-1);
92
93			/* Update free aux pointer */
94			RS_NEXT_AUX_PT(samp)++;
95
96			/* Copy vector into point */
97			VCOPY(RS_NTH_W_PT(samp,id),v);
98			RS_NTH_W_DIR(samp,id) = encodedir(d);
99			return(id);
100			}
101
102			void
103			smInit_sample(sm,id,c,d,p)
104			SM *sm;
105			int id;
106			COLR c;
107			FVECT d,p;
108			{
109			RSAMP *samp;
110
111			samp = SM_SAMP(sm);
112			if(p)
113			{
114			/* Copy vector into point */
115			VCOPY(RS_NTH_W_PT(samp,id),p);
116			RS_NTH_W_DIR(samp,id) = encodedir(d);
117			}
118			else
119			{
120			VADD(RS_NTH_W_PT(samp,id),d,SM_VIEW_CENTER(sm));
121			RS_NTH_W_DIR(samp,id) = -1;
122			}
123
124			#ifndef TEST_DRIVER
125			tmCvColrs(&RS_NTH_BRT(samp,id),RS_NTH_CHR(samp,id),c,1);
126			#else
127			if(c)
128			{
129			RS_NTH_RGB(samp,id)[0] = c[0];
130			RS_NTH_RGB(samp,id)[1] = c[1];
131			RS_NTH_RGB(samp,id)[2] = c[2];
132			}
133			else
134			{
135			RS_NTH_RGB(samp,id)[0] = 100;
136			RS_NTH_RGB(samp,id)[1] = 0;
137			RS_NTH_RGB(samp,id)[2] = 0;
138			}
139			#endif
140			}
141
142
143			void
144			smReset_sample(sm,id,n_id)
145			SM *sm;
146			int id,n_id;
147			{
148			RSAMP *samp;
149
150			samp = SM_SAMP(sm);
151
152			/* Copy vector into point */
153			VCOPY(RS_NTH_W_PT(samp,id),RS_NTH_W_PT(samp,n_id));
154			RS_NTH_W_DIR(samp,id) = RS_NTH_W_DIR(samp,n_id);
155
156			RS_NTH_BRT(samp,id) = RS_NTH_BRT(samp,n_id);
157			RS_NTH_CHR(samp,id)[0] = RS_NTH_CHR(samp,n_id)[0];
158			RS_NTH_CHR(samp,id)[1] = RS_NTH_CHR(samp,n_id)[1];
159			RS_NTH_CHR(samp,id)[2] = RS_NTH_CHR(samp,n_id)[2];
160			RS_NTH_RGB(samp,id)[0] = RS_NTH_RGB(samp,n_id)[0];
161			RS_NTH_RGB(samp,id)[1] = RS_NTH_RGB(samp,n_id)[1];
162			RS_NTH_RGB(samp,id)[2] = RS_NTH_RGB(samp,n_id)[2];
163
164			}
165
166			int
167			rsAlloc_samp(samp,replaced)
168			RSAMP *samp;
169	gwlarson	3.2	int *replaced;
170	gwlarson	3.1
171			{
172			int id;
173
174			if(replaced)
175			*replaced = FALSE;
176			if(RS_NUM_SAMP(samp) < RS_MAX_SAMP(samp))
177			{
178			id = RS_NUM_SAMP(samp);
179			RS_NUM_SAMP(samp)++;
180
181			}
182			else
183			if(RS_REPLACE_SAMP(samp) != -1)
184			{
185			id = RS_REPLACE_SAMP(samp);
186			/* NOTE: NEED to do LRU later*/
187			RS_REPLACE_SAMP(samp) = (id + 1)% RS_MAX_SAMP(samp);
188			if(replaced)
189			*replaced = TRUE;
190			}
191			else
192			if(RS_FREE_SAMP(samp) != -1)
193			{
194			id = RS_FREE_SAMP(samp);
195			RS_FREE_SAMP(samp) = RS_NTH_W_DIR(samp,id);
196			}
197			else
198			{
199			#ifdef DEBUG
200			eputs("rsAlloc_samp(): no samples available");
201			#endif
202			id = -1;
203			}
204
205			return(id);
206			}
207
208			int
209			rsDelete_sample(samp,id)
210			RSAMP *samp;
211			int id;
212			{
213			/* First check for a valid id */
214			if(id >= RS_MAX_SAMP(samp) \|\| id < 0)
215			return(FALSE);
216
217			RS_NTH_W_DIR(samp,id) = RS_FREE_SAMP(samp);
218			RS_FREE_SAMP(samp) = id;
219
220			return(TRUE);
221			}
222
223			int
224			smDelete_sample(sm,id)
225			SM *sm;
226			int id;
227			{
228			RSAMP *samp;
229
230			samp = SM_SAMP(sm);
231			return(rsDelete_sample(samp,id));
232			}
233
234			/* NEEDS: to add free list- and bit for clocked LRU */
235			int
236			smAdd_sample_point(sm,c,dir,p)
237			SM *sm;
238			COLR c;
239			FVECT dir;
240			FVECT p;
241
242			{
243			RSAMP *samp;
244			int id;
245	gwlarson	3.2	int replaced;
246	gwlarson	3.1
247			/* Get the SM sample array */
248			samp = SM_SAMP(sm);
249			/* Get pointer to next available point */
250			id = rsAlloc_samp(samp,&replaced);
251			if(id < 0)
252			return(-1);
253
254			if(replaced)
255			smMesh_remove_vertex(sm,id);
256
257			smInit_sample(sm,id,c,dir,p);
258
259			return(id);
260			}
261
262
263
264
265
266
267
268
269