| 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 = n*SAMPSIZ + extra_points*SM_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(n*SAMPSIZ + 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 |
int *replaced; |
| 170 |
|
| 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 |
int replaced; |
| 246 |
|
| 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 |
|
