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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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|
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#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ SGI"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
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#endif |
6 |
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|
4 |
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/* |
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* sm_qtree.c: adapted from octree.c from radiance code |
6 |
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*/ |
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* 7/28/85 |
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*/ |
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|
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#include <string.h> |
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|
15 |
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#include "standard.h" |
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#include "sm_flag.h" |
17 |
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#include "sm_geom.h" |
18 |
+ |
#include "object.h" |
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#include "sm_qtree.h" |
20 |
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|
21 |
< |
QUADTREE *quad_block[QT_MAX_BLK]; /* our quadtree */ |
21 |
> |
QUADTREE *quad_block[QT_MAX_BLK]; /* our quadtree */ |
22 |
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static QUADTREE quad_free_list = EMPTY; /* freed octree nodes */ |
23 |
< |
static QUADTREE treetop = 0; /* next free node */ |
24 |
< |
int4 *quad_flag= NULL; |
23 |
> |
static QUADTREE treetop = 0; /* next free node */ |
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> |
int32 *quad_flag= NULL; /* quadtree flags */ |
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|
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#ifdef TEST_DRIVER |
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extern FVECT Pick_v0[500],Pick_v1[500],Pick_v2[500]; |
28 |
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extern int Pick_cnt,Pick_tri,Pick_samp; |
29 |
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extern FVECT Pick_point[500]; |
30 |
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extern int Pick_q[500]; |
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|
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qtremovelast(qt,id) |
28 |
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QUADTREE qt; |
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OBJECT id; |
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{ |
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#ifdef DEBUG |
32 |
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if(qtqueryset(qt)[(*(qtqueryset(qt)))] != id) |
33 |
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error(CONSISTENCY,"not removed\n"); |
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#endif |
35 |
< |
int Incnt=0; |
36 |
< |
|
35 |
> |
((*(qtqueryset(qt)))--); |
36 |
> |
} |
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QUADTREE |
38 |
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qtAlloc() /* allocate a quadtree */ |
39 |
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{ |
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error(SYSTEM,"qtAlloc(): Unable to allocate memory\n"); |
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|
56 |
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/* Realloc the per/node flags */ |
57 |
< |
quad_flag = (int4 *)realloc((char *)quad_flag, |
57 |
> |
quad_flag = (int32 *)realloc((void *)quad_flag, |
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(QT_BLOCK(freet)+1)*((QT_BLOCK_SIZE+7)>>3)); |
59 |
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if (quad_flag == NULL) |
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error(SYSTEM,"qtAlloc(): Unable to allocate memory\n"); |
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return; |
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|
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/* Clear the node flags*/ |
73 |
< |
bzero((char *)quad_flag, (QT_BLOCK(treetop-4)+1)*((QT_BLOCK_SIZE+7)>>3)); |
73 |
> |
memset((char *)quad_flag, '\0', |
74 |
> |
(QT_BLOCK(treetop-4)+1)*((QT_BLOCK_SIZE+7)>>3)); |
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/* Clear set flags */ |
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qtclearsetflags(); |
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} |
102 |
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{ |
103 |
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if (quad_block[i] == NULL) |
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break; |
105 |
< |
free((char *)quad_block[i]); |
105 |
> |
free((void *)quad_block[i]); |
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quad_block[i] = NULL; |
107 |
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} |
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/* Free the flags */ |
109 |
< |
if (i) free((char *)quad_flag); |
109 |
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if (i) free((void *)quad_flag); |
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quad_flag = NULL; |
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quad_free_list = EMPTY; |
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treetop = 0; |
113 |
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} |
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|
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QUADTREE |
116 |
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qtLocate_leaf(qt,bcoord) |
117 |
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QUADTREE qt; |
118 |
< |
BCOORD bcoord[3]; |
115 |
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/* |
116 |
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* bary_parent(coord,i) : Set coord to be value of pt at one level up in |
117 |
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* quadtree, given it was the ith child |
118 |
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* BCOORD coord[3]; :barycentric coordinates of point, also will hold |
119 |
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* result as side effect |
120 |
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* int i; :designates which child coord was |
121 |
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*/ |
122 |
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bary_parent(coord,i) |
123 |
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BCOORD coord[3]; |
124 |
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int i; |
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{ |
126 |
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int i; |
127 |
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|
128 |
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if(QT_IS_TREE(qt)) |
129 |
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{ |
130 |
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i = baryi_child(bcoord); |
131 |
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|
132 |
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return(qtLocate_leaf(QT_NTH_CHILD(qt,i),bcoord)); |
126 |
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switch(i) { |
127 |
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case 0: |
128 |
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/* update bary for child */ |
129 |
> |
coord[0] = (coord[0] >> 1) + MAXBCOORD4; |
130 |
> |
coord[1] >>= 1; |
131 |
> |
coord[2] >>= 1; |
132 |
> |
break; |
133 |
> |
case 1: |
134 |
> |
coord[0] >>= 1; |
135 |
> |
coord[1] = (coord[1] >> 1) + MAXBCOORD4; |
136 |
> |
coord[2] >>= 1; |
137 |
> |
break; |
138 |
> |
|
139 |
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case 2: |
140 |
> |
coord[0] >>= 1; |
141 |
> |
coord[1] >>= 1; |
142 |
> |
coord[2] = (coord[2] >> 1) + MAXBCOORD4; |
143 |
> |
break; |
144 |
> |
|
145 |
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case 3: |
146 |
> |
coord[0] = MAXBCOORD4 - (coord[0] >> 1); |
147 |
> |
coord[1] = MAXBCOORD4 - (coord[1] >> 1); |
148 |
> |
coord[2] = MAXBCOORD4 - (coord[2] >> 1); |
149 |
> |
break; |
150 |
> |
#ifdef DEBUG |
151 |
> |
default: |
152 |
> |
eputs("bary_parent():Invalid child\n"); |
153 |
> |
break; |
154 |
> |
#endif |
155 |
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} |
125 |
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else |
126 |
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return(qt); |
156 |
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} |
157 |
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|
158 |
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/* |
159 |
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Return the quadtree node containing pt. It is assumed that pt is in |
160 |
< |
the root node qt with ws vertices q0,q1,q2 and plane equation peq. |
161 |
< |
*/ |
162 |
< |
QUADTREE |
163 |
< |
qtRoot_point_locate(qt,q0,q1,q2,peq,pt) |
164 |
< |
QUADTREE qt; |
165 |
< |
FVECT q0,q1,q2; |
137 |
< |
FPEQ peq; |
138 |
< |
FVECT pt; |
139 |
< |
{ |
140 |
< |
int i,x,y; |
141 |
< |
FVECT i_pt; |
142 |
< |
double bcoord[3]; |
143 |
< |
BCOORD bcoordi[3]; |
144 |
< |
|
145 |
< |
/* Will return lowest level triangle containing point: It the |
146 |
< |
point is on an edge or vertex: will return first associated |
147 |
< |
triangle encountered in the child traversal- the others can |
148 |
< |
be derived using triangle adjacency information |
149 |
< |
*/ |
150 |
< |
if(QT_IS_TREE(qt)) |
151 |
< |
{ |
152 |
< |
/* Find the intersection point */ |
153 |
< |
intersect_vector_plane(pt,peq,NULL,i_pt); |
154 |
< |
|
155 |
< |
x = FP_X(peq); |
156 |
< |
y = FP_Y(peq); |
157 |
< |
/* Calculate barycentric coordinates of i_pt */ |
158 |
< |
bary2d(q0[x],q0[y],q1[x],q1[y],q2[x],q2[y],i_pt[x],i_pt[y],bcoord); |
159 |
< |
|
160 |
< |
/* convert to integer coordinate */ |
161 |
< |
convert_dtol(bcoord,bcoordi); |
162 |
< |
|
163 |
< |
i = baryi_child(bcoordi); |
164 |
< |
|
165 |
< |
return(qtLocate_leaf(QT_NTH_CHILD(qt,i),bcoordi)); |
166 |
< |
} |
167 |
< |
else |
168 |
< |
return(qt); |
169 |
< |
} |
170 |
< |
|
171 |
< |
|
172 |
< |
|
173 |
< |
|
174 |
< |
/* for triangle v0-v1-v2- returns a,b,c: children are: |
175 |
< |
|
176 |
< |
v2 0: v0,a,c |
177 |
< |
/\ 1: a,v1,b |
178 |
< |
/2 \ 2: c,b,v2 |
179 |
< |
c/____\b 3: b,c,a |
180 |
< |
/\ /\ |
181 |
< |
/0 \3 /1 \ |
182 |
< |
v0____\/____\v1 |
183 |
< |
a |
159 |
> |
* bary_from_child(coord,child,next): Given that coord was the (child) child |
160 |
> |
* of the quadtree node, calculate what the (next) child |
161 |
> |
* is at the same level. |
162 |
> |
* BCOORD coord[3]; :At current level (child)th child of node,will also hold |
163 |
> |
* result as side effect |
164 |
> |
* int child,next; :Which child coord was (child), and which one |
165 |
> |
* is now desired(next) |
166 |
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*/ |
167 |
< |
|
168 |
< |
|
169 |
< |
qtNth_child_tri(v0,v1,v2,a,b,c,i,r0,r1,r2) |
188 |
< |
FVECT v0,v1,v2; |
189 |
< |
FVECT a,b,c; |
190 |
< |
int i; |
191 |
< |
FVECT r0,r1,r2; |
167 |
> |
bary_from_child(coord,child,next) |
168 |
> |
BCOORD coord[3]; |
169 |
> |
int child,next; |
170 |
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{ |
171 |
< |
|
172 |
< |
if(!a) |
171 |
> |
#ifdef DEBUG |
172 |
> |
if(child <0 || child > 3) |
173 |
|
{ |
174 |
< |
/* Caution: r's must not be equal to v's:will be incorrect */ |
175 |
< |
switch(i){ |
198 |
< |
case 0: |
199 |
< |
VCOPY(r0,v0); |
200 |
< |
EDGE_MIDPOINT_VEC3(r1,v0,v1); |
201 |
< |
EDGE_MIDPOINT_VEC3(r2,v2,v0); |
202 |
< |
break; |
203 |
< |
case 1: |
204 |
< |
EDGE_MIDPOINT_VEC3(r0,v0,v1); |
205 |
< |
VCOPY(r1,v1); |
206 |
< |
EDGE_MIDPOINT_VEC3(r2,v1,v2); |
207 |
< |
break; |
208 |
< |
case 2: |
209 |
< |
EDGE_MIDPOINT_VEC3(r0,v2,v0); |
210 |
< |
EDGE_MIDPOINT_VEC3(r1,v1,v2); |
211 |
< |
VCOPY(r2,v2); |
212 |
< |
break; |
213 |
< |
case 3: |
214 |
< |
EDGE_MIDPOINT_VEC3(r0,v1,v2); |
215 |
< |
EDGE_MIDPOINT_VEC3(r1,v2,v0); |
216 |
< |
EDGE_MIDPOINT_VEC3(r2,v0,v1); |
217 |
< |
break; |
218 |
< |
} |
174 |
> |
eputs("bary_from_child():Invalid child\n"); |
175 |
> |
return; |
176 |
|
} |
177 |
< |
else |
177 |
> |
if(next <0 || next > 3) |
178 |
|
{ |
179 |
< |
switch(i){ |
180 |
< |
case 0: |
181 |
< |
VCOPY(r0,v0); VCOPY(r1,a); VCOPY(r2,c); |
179 |
> |
eputs("bary_from_child():Invalid next\n"); |
180 |
> |
return; |
181 |
> |
} |
182 |
> |
#endif |
183 |
> |
if(next == child) |
184 |
> |
return; |
185 |
> |
|
186 |
> |
switch(child){ |
187 |
> |
case 0: |
188 |
> |
coord[0] = 0; |
189 |
> |
coord[1] = MAXBCOORD2 - coord[1]; |
190 |
> |
coord[2] = MAXBCOORD2 - coord[2]; |
191 |
|
break; |
192 |
< |
case 1: |
193 |
< |
VCOPY(r0,a); VCOPY(r1,v1); VCOPY(r2,b); |
192 |
> |
case 1: |
193 |
> |
coord[0] = MAXBCOORD2 - coord[0]; |
194 |
> |
coord[1] = 0; |
195 |
> |
coord[2] = MAXBCOORD2 - coord[2]; |
196 |
|
break; |
197 |
< |
case 2: |
198 |
< |
VCOPY(r0,c); VCOPY(r1,b); VCOPY(r2,v2); |
197 |
> |
case 2: |
198 |
> |
coord[0] = MAXBCOORD2 - coord[0]; |
199 |
> |
coord[1] = MAXBCOORD2 - coord[1]; |
200 |
> |
coord[2] = 0; |
201 |
> |
break; |
202 |
> |
case 3: |
203 |
> |
switch(next){ |
204 |
> |
case 0: |
205 |
> |
coord[0] = 0; |
206 |
> |
coord[1] = MAXBCOORD2 - coord[1]; |
207 |
> |
coord[2] = MAXBCOORD2 - coord[2]; |
208 |
|
break; |
209 |
< |
case 3: |
210 |
< |
VCOPY(r0,b); VCOPY(r1,c); VCOPY(r2,a); |
209 |
> |
case 1: |
210 |
> |
coord[0] = MAXBCOORD2 - coord[0]; |
211 |
> |
coord[1] = 0; |
212 |
> |
coord[2] = MAXBCOORD2 - coord[2]; |
213 |
|
break; |
214 |
+ |
case 2: |
215 |
+ |
coord[0] = MAXBCOORD2 - coord[0]; |
216 |
+ |
coord[1] = MAXBCOORD2 - coord[1]; |
217 |
+ |
coord[2] = 0; |
218 |
+ |
break; |
219 |
|
} |
220 |
+ |
break; |
221 |
|
} |
222 |
|
} |
223 |
|
|
224 |
< |
/* Add triangle "id" to all leaf level cells that are children of |
225 |
< |
quadtree pointed to by "qtptr" with cell vertices "t1,t2,t3" |
226 |
< |
that it overlaps (vertex and edge adjacencies do not count |
227 |
< |
as overlapping). If the addition of the triangle causes the cell to go over |
228 |
< |
threshold- the cell is split- and the triangle must be recursively inserted |
229 |
< |
into the new child cells: it is assumed that "v1,v2,v3" are normalized |
230 |
< |
*/ |
231 |
< |
|
232 |
< |
QUADTREE |
233 |
< |
qtRoot_add_tri(qt,q0,q1,q2,t0,t1,t2,id,n) |
249 |
< |
QUADTREE qt; |
250 |
< |
FVECT q0,q1,q2; |
251 |
< |
FVECT t0,t1,t2; |
252 |
< |
int id,n; |
224 |
> |
/* |
225 |
> |
* int |
226 |
> |
* bary_child(coord): Return which child coord is of node at current level |
227 |
> |
* As side effect recalculate coord at next level |
228 |
> |
* BCOORD coord[3]; :At current level coordinates of point, will also set |
229 |
> |
* to coords at next level as side effect |
230 |
> |
*/ |
231 |
> |
int |
232 |
> |
bary_child(coord) |
233 |
> |
BCOORD coord[3]; |
234 |
|
{ |
254 |
– |
if(stri_intersect(q0,q1,q2,t0,t1,t2)) |
255 |
– |
qt = qtAdd_tri(qt,q0,q1,q2,t0,t1,t2,id,n); |
256 |
– |
|
257 |
– |
return(qt); |
258 |
– |
} |
259 |
– |
|
260 |
– |
QUADTREE |
261 |
– |
qtRoot_remove_tri(qt,q0,q1,q2,t0,t1,t2,id,n) |
262 |
– |
QUADTREE qt; |
263 |
– |
FVECT q0,q1,q2; |
264 |
– |
FVECT t0,t1,t2; |
265 |
– |
int id,n; |
266 |
– |
{ |
267 |
– |
|
268 |
– |
if(stri_intersect(q0,q1,q2,t0,t1,t2)) |
269 |
– |
qt = qtRemove_tri(qt,q0,q1,q2,t0,t1,t2,id,n); |
270 |
– |
return(qt); |
271 |
– |
} |
272 |
– |
|
273 |
– |
|
274 |
– |
QUADTREE |
275 |
– |
qtAdd_tri(qt,q0,q1,q2,t0,t1,t2,id,n) |
276 |
– |
QUADTREE qt; |
277 |
– |
FVECT q0,q1,q2; |
278 |
– |
FVECT t0,t1,t2; |
279 |
– |
int id; |
280 |
– |
int n; |
281 |
– |
{ |
282 |
– |
FVECT a,b,c; |
283 |
– |
OBJECT tset[QT_MAXSET+1],*optr,*tptr; |
284 |
– |
FVECT r0,r1,r2; |
235 |
|
int i; |
236 |
|
|
237 |
< |
/* if this is tree: recurse */ |
238 |
< |
if(QT_IS_TREE(qt)) |
239 |
< |
{ |
240 |
< |
QT_SET_FLAG(qt); |
241 |
< |
n++; |
242 |
< |
qtSubdivide_tri(q0,q1,q2,a,b,c); |
243 |
< |
|
294 |
< |
if(stri_intersect(t0,t1,t2,q0,a,c)) |
295 |
< |
QT_NTH_CHILD(qt,0) = qtAdd_tri(QT_NTH_CHILD(qt,0),q0,a,c,t0,t1,t2,id,n); |
296 |
< |
if(stri_intersect(t0,t1,t2,a,q1,b)) |
297 |
< |
QT_NTH_CHILD(qt,1) = qtAdd_tri(QT_NTH_CHILD(qt,1),a,q1,b,t0,t1,t2,id,n); |
298 |
< |
if(stri_intersect(t0,t1,t2,c,b,q2)) |
299 |
< |
QT_NTH_CHILD(qt,2) = qtAdd_tri(QT_NTH_CHILD(qt,2),c,b,q2,t0,t1,t2,id,n); |
300 |
< |
if(stri_intersect(t0,t1,t2,b,c,a)) |
301 |
< |
QT_NTH_CHILD(qt,3) = qtAdd_tri(QT_NTH_CHILD(qt,3),b,c,a,t0,t1,t2,id,n); |
302 |
< |
return(qt); |
237 |
> |
if(coord[0] > MAXBCOORD4) |
238 |
> |
{ |
239 |
> |
/* update bary for child */ |
240 |
> |
coord[0] = (coord[0]<< 1) - MAXBCOORD2; |
241 |
> |
coord[1] <<= 1; |
242 |
> |
coord[2] <<= 1; |
243 |
> |
return(0); |
244 |
|
} |
245 |
|
else |
246 |
< |
{ |
247 |
< |
/* If this leave node emptry- create a new set */ |
248 |
< |
if(QT_IS_EMPTY(qt)) |
249 |
< |
qt = qtaddelem(qt,id); |
250 |
< |
else |
246 |
> |
if(coord[1] > MAXBCOORD4) |
247 |
> |
{ |
248 |
> |
coord[0] <<= 1; |
249 |
> |
coord[1] = (coord[1] << 1) - MAXBCOORD2; |
250 |
> |
coord[2] <<= 1; |
251 |
> |
return(1); |
252 |
> |
} |
253 |
> |
else |
254 |
> |
if(coord[2] > MAXBCOORD4) |
255 |
|
{ |
256 |
< |
/* If the set is too large: subdivide */ |
257 |
< |
optr = qtqueryset(qt); |
258 |
< |
|
259 |
< |
if(QT_SET_CNT(optr) < QT_SET_THRESHOLD) |
315 |
< |
qt = qtaddelem(qt,id); |
316 |
< |
else |
317 |
< |
{ |
318 |
< |
if (n < QT_MAX_LEVELS) |
319 |
< |
{ |
320 |
< |
/* If set size exceeds threshold: subdivide cell and |
321 |
< |
reinsert set tris into cell |
322 |
< |
*/ |
323 |
< |
/* CAUTION:If QT_SET_THRESHOLD << QT_MAXSET, and dont add |
324 |
< |
more than a few triangles before expanding: then are safe here |
325 |
< |
otherwise must check to make sure set size is < MAXSET, |
326 |
< |
or qtgetset could overflow os. |
327 |
< |
*/ |
328 |
< |
tptr = qtqueryset(qt); |
329 |
< |
if(QT_SET_CNT(tptr) > QT_MAXSET) |
330 |
< |
tptr = (OBJECT *)malloc((QT_SET_CNT(tptr)+1)*sizeof(OBJECT)); |
331 |
< |
else |
332 |
< |
tptr = tset; |
333 |
< |
if(!tptr) |
334 |
< |
goto memerr; |
335 |
< |
|
336 |
< |
qtgetset(tptr,qt); |
337 |
< |
n++; |
338 |
< |
qtfreeleaf(qt); |
339 |
< |
qtSubdivide(qt); |
340 |
< |
qt = qtAdd_tri(qt,q0,q1,q2,t0,t1,t2,id,n); |
341 |
< |
|
342 |
< |
for(optr = QT_SET_PTR(tptr),i = QT_SET_CNT(tptr); i > 0; i--) |
343 |
< |
{ |
344 |
< |
id = QT_SET_NEXT_ELEM(optr); |
345 |
< |
if(!qtTri_from_id(id,r0,r1,r2)) |
346 |
< |
continue; |
347 |
< |
qt = qtAdd_tri(qt,q0,q1,q2,r0,r1,r2,id,n); |
348 |
< |
} |
349 |
< |
if(tptr != tset) |
350 |
< |
free(tptr); |
351 |
< |
} |
352 |
< |
else |
353 |
< |
qt = qtaddelem(qt,id); |
354 |
< |
} |
256 |
> |
coord[0] <<= 1; |
257 |
> |
coord[1] <<= 1; |
258 |
> |
coord[2] = (coord[2] << 1) - MAXBCOORD2; |
259 |
> |
return(2); |
260 |
|
} |
261 |
< |
} |
262 |
< |
return(qt); |
263 |
< |
memerr: |
264 |
< |
error(SYSTEM,"qtAdd_tri():Unable to allocate memory"); |
261 |
> |
else |
262 |
> |
{ |
263 |
> |
coord[0] = MAXBCOORD2 - (coord[0] << 1); |
264 |
> |
coord[1] = MAXBCOORD2 - (coord[1] << 1); |
265 |
> |
coord[2] = MAXBCOORD2 - (coord[2] << 1); |
266 |
> |
return(3); |
267 |
> |
} |
268 |
|
} |
269 |
|
|
270 |
|
|
271 |
+ |
|
272 |
|
QUADTREE |
273 |
< |
qtRemove_tri(qt,id,q0,q1,q2,t0,t1,t2) |
273 |
> |
qtLocate(qt,bcoord) |
274 |
|
QUADTREE qt; |
275 |
< |
int id; |
367 |
< |
FVECT q0,q1,q2; |
368 |
< |
FVECT t0,t1,t2; |
275 |
> |
BCOORD bcoord[3]; |
276 |
|
{ |
277 |
< |
FVECT a,b,c; |
371 |
< |
|
372 |
< |
/* test if triangle (t0,t1,t2) overlaps cell triangle (v0,v1,v2) */ |
373 |
< |
if(!stri_intersect(t0,t1,t2,q0,q1,q2)) |
374 |
< |
return(qt); |
277 |
> |
int i; |
278 |
|
|
376 |
– |
/* if this is tree: recurse */ |
279 |
|
if(QT_IS_TREE(qt)) |
280 |
< |
{ |
281 |
< |
qtSubdivide_tri(q0,q1,q2,a,b,c); |
282 |
< |
QT_NTH_CHILD(qt,0) = qtRemove_tri(QT_NTH_CHILD(qt,0),id,t0,t1,t2,q0,a,c); |
283 |
< |
QT_NTH_CHILD(qt,1) = qtRemove_tri(QT_NTH_CHILD(qt,1),id,t0,t1,t2,a,q1,b); |
382 |
< |
QT_NTH_CHILD(qt,2) = qtRemove_tri(QT_NTH_CHILD(qt,2),id,t0,t1,t2,c,b,q2); |
383 |
< |
QT_NTH_CHILD(qt,3) = qtRemove_tri(QT_NTH_CHILD(qt,3),id,t0,t1,t2,b,c,a); |
384 |
< |
return(qt); |
280 |
> |
{ |
281 |
> |
i = bary_child(bcoord); |
282 |
> |
|
283 |
> |
return(qtLocate(QT_NTH_CHILD(qt,i),bcoord)); |
284 |
|
} |
285 |
|
else |
387 |
– |
{ |
388 |
– |
if(QT_IS_EMPTY(qt)) |
389 |
– |
{ |
390 |
– |
#ifdef DEBUG |
391 |
– |
eputs("qtRemove_tri(): triangle not found\n"); |
392 |
– |
#endif |
393 |
– |
} |
394 |
– |
/* remove id from set */ |
395 |
– |
else |
396 |
– |
{ |
397 |
– |
if(!qtinset(qt,id)) |
398 |
– |
{ |
399 |
– |
#ifdef DEBUG |
400 |
– |
eputs("qtRemove_tri(): tri not in set\n"); |
401 |
– |
#endif |
402 |
– |
} |
403 |
– |
else |
404 |
– |
qt = qtdelelem(qt,id); |
405 |
– |
} |
406 |
– |
} |
407 |
– |
return(qt); |
408 |
– |
} |
409 |
– |
|
410 |
– |
|
411 |
– |
QUADTREE |
412 |
– |
qtVisit_tri_interior(qt,q0,q1,q2,t0,t1,t2,n0,n1,n2,n,func,f,argptr) |
413 |
– |
QUADTREE qt; |
414 |
– |
FVECT q0,q1,q2; |
415 |
– |
FVECT t0,t1,t2; |
416 |
– |
FVECT n0,n1,n2; |
417 |
– |
int n; |
418 |
– |
int (*func)(),*f; |
419 |
– |
int *argptr; |
420 |
– |
{ |
421 |
– |
FVECT a,b,c; |
422 |
– |
|
423 |
– |
/* If qt Flag set, or qt vertices interior to t0t1t2-descend */ |
424 |
– |
tree_modified: |
425 |
– |
|
426 |
– |
if(QT_IS_TREE(qt)) |
427 |
– |
{ |
428 |
– |
if(QT_IS_FLAG(qt) || point_in_stri_n(n0,n1,n2,q0)) |
429 |
– |
{ |
430 |
– |
QT_SET_FLAG(qt); |
431 |
– |
qtSubdivide_tri(q0,q1,q2,a,b,c); |
432 |
– |
/* descend to children */ |
433 |
– |
QT_NTH_CHILD(qt,0) = qtVisit_tri_interior(QT_NTH_CHILD(qt,0), |
434 |
– |
q0,a,c,t0,t1,t2,n0,n1,n2,n+1,func,f,argptr); |
435 |
– |
QT_NTH_CHILD(qt,1) = qtVisit_tri_interior(QT_NTH_CHILD(qt,1), |
436 |
– |
a,q1,b,t0,t1,t2,n0,n1,n2,n+1,func,f,argptr); |
437 |
– |
QT_NTH_CHILD(qt,2) = qtVisit_tri_interior(QT_NTH_CHILD(qt,2), |
438 |
– |
c,b,q2,t0,t1,t2,n0,n1,n2,n+1,func,f,argptr); |
439 |
– |
QT_NTH_CHILD(qt,3) = qtVisit_tri_interior(QT_NTH_CHILD(qt,3), |
440 |
– |
b,c,a,t0,t1,t2,n0,n1,n2,n+1,func,f,argptr); |
441 |
– |
} |
442 |
– |
} |
443 |
– |
else |
444 |
– |
if((!QT_IS_EMPTY(qt) && QT_LEAF_IS_FLAG(qt)) || |
445 |
– |
point_in_stri_n(n0,n1,n2,q0)) |
446 |
– |
{ |
447 |
– |
func(&qt,f,argptr,q0,q1,q2,t0,t1,t2,n); |
448 |
– |
if(QT_FLAG_IS_MODIFIED(*f)) |
449 |
– |
{ |
450 |
– |
QT_SET_FLAG(qt); |
451 |
– |
goto tree_modified; |
452 |
– |
} |
453 |
– |
if(QT_IS_LEAF(qt)) |
454 |
– |
QT_LEAF_SET_FLAG(qt); |
455 |
– |
else |
456 |
– |
if(QT_IS_TREE(qt)) |
457 |
– |
QT_SET_FLAG(qt); |
458 |
– |
} |
286 |
|
return(qt); |
287 |
|
} |
288 |
|
|
462 |
– |
|
463 |
– |
|
289 |
|
int |
290 |
< |
move_to_nbri(b,db0,db1,db2,tptr) |
290 |
> |
move_to_nbr(b,db0,db1,db2,tptr) |
291 |
|
BCOORD b[3]; |
292 |
|
BDIR db0,db1,db2; |
293 |
< |
TINT *tptr; |
293 |
> |
double *tptr; |
294 |
|
{ |
295 |
< |
TINT t,dt; |
295 |
> |
double t,dt; |
296 |
|
BCOORD bc; |
297 |
|
int nbr; |
298 |
|
|
299 |
|
nbr = -1; |
300 |
< |
*tptr = 0; |
300 |
> |
*tptr = 0.0; |
301 |
|
/* Advance to next node */ |
302 |
|
if(b[0]==0 && db0 < 0) |
303 |
|
return(0); |
305 |
|
return(1); |
306 |
|
if(b[2]==0 && db2 < 0) |
307 |
|
return(2); |
483 |
– |
|
308 |
|
if(db0 < 0) |
309 |
|
{ |
310 |
< |
bc = b[0]<<SHIFT_MAXBCOORD; |
487 |
< |
t = bc/-db0; |
310 |
> |
t = ((double)b[0])/-db0; |
311 |
|
nbr = 0; |
312 |
|
} |
313 |
|
else |
314 |
< |
t = HUGET; |
314 |
> |
t = MAXFLOAT; |
315 |
|
if(db1 < 0) |
316 |
|
{ |
317 |
< |
bc = b[1] <<SHIFT_MAXBCOORD; |
495 |
< |
dt = bc/-db1; |
317 |
> |
dt = ((double)b[1])/-db1; |
318 |
|
if( dt < t) |
319 |
|
{ |
320 |
|
t = dt; |
323 |
|
} |
324 |
|
if(db2 < 0) |
325 |
|
{ |
326 |
< |
bc = b[2] << SHIFT_MAXBCOORD; |
505 |
< |
dt = bc/-db2; |
326 |
> |
dt = ((double)b[2])/-db2; |
327 |
|
if( dt < t) |
328 |
|
{ |
329 |
|
t = dt; |
334 |
|
return(nbr); |
335 |
|
} |
336 |
|
|
337 |
< |
QUADTREE |
517 |
< |
qtVisit_tri_edges(qt,b,db0,db1,db2,db,wptr,nextptr,t,sign,sfactor,func,f,argptr) |
337 |
> |
qtTrace_ray(qt,b,db0,db1,db2,nextptr,sign,sfactor,func,f) |
338 |
|
QUADTREE qt; |
339 |
|
BCOORD b[3]; |
340 |
< |
BDIR db0,db1,db2,db[3][3]; |
341 |
< |
int *wptr,*nextptr; |
522 |
< |
TINT t[3]; |
340 |
> |
BDIR db0,db1,db2; |
341 |
> |
int *nextptr; |
342 |
|
int sign,sfactor; |
343 |
< |
int (*func)(); |
344 |
< |
int *f,*argptr; |
343 |
> |
FUNC func; |
344 |
> |
int *f; |
345 |
|
{ |
346 |
|
int i,found; |
347 |
|
QUADTREE child; |
348 |
|
int nbr,next,w; |
349 |
< |
TINT t_g,t_l,t_i,l; |
349 |
> |
double t; |
350 |
|
|
351 |
|
if(QT_IS_TREE(qt)) |
352 |
|
{ |
353 |
|
/* Find the appropriate child and reset the coord */ |
354 |
< |
i = baryi_child(b); |
354 |
> |
i = bary_child(b); |
355 |
|
|
537 |
– |
QT_SET_FLAG(qt); |
538 |
– |
|
356 |
|
for(;;) |
357 |
|
{ |
541 |
– |
w = *wptr; |
358 |
|
child = QT_NTH_CHILD(qt,i); |
359 |
|
if(i != 3) |
360 |
< |
QT_NTH_CHILD(qt,i) = |
545 |
< |
qtVisit_tri_edges(child,b,db0,db1,db2,db,wptr,nextptr,t,sign, |
546 |
< |
sfactor+1,func,f,argptr); |
360 |
> |
qtTrace_ray(child,b,db0,db1,db2,nextptr,sign,sfactor+1,func,f); |
361 |
|
else |
362 |
|
/* If the center cell- must flip direction signs */ |
363 |
< |
QT_NTH_CHILD(qt,i) = |
550 |
< |
qtVisit_tri_edges(child,b,-db0,-db1,-db2,db,wptr,nextptr,t,1-sign, |
551 |
< |
sfactor+1,func,f,argptr); |
363 |
> |
qtTrace_ray(child,b,-db0,-db1,-db2,nextptr,1-sign,sfactor+1,func,f); |
364 |
|
|
365 |
|
if(QT_FLAG_IS_DONE(*f)) |
366 |
< |
return(qt); |
555 |
< |
if(*wptr != w) |
556 |
< |
{ |
557 |
< |
w = *wptr; |
558 |
< |
db0 = db[w][0];db1 = db[w][1];db2 = db[w][2]; |
559 |
< |
if(sign) |
560 |
< |
{ db0 *= -1;db1 *= -1; db2 *= -1;} |
561 |
< |
} |
366 |
> |
return; |
367 |
|
/* If in same block: traverse */ |
368 |
|
if(i==3) |
369 |
|
next = *nextptr; |
373 |
|
else |
374 |
|
{ |
375 |
|
/* reset the barycentric coordinates in the parents*/ |
376 |
< |
baryi_parent(b,i); |
376 |
> |
bary_parent(b,i); |
377 |
|
/* Else pop up to parent and traverse from there */ |
378 |
|
return(qt); |
379 |
|
} |
380 |
< |
baryi_from_child(b,i,next); |
380 |
> |
bary_from_child(b,i,next); |
381 |
|
i = next; |
382 |
|
} |
383 |
|
} |
387 |
|
if(Pick_cnt < 500) |
388 |
|
Pick_q[Pick_cnt++]=qt; |
389 |
|
#endif; |
390 |
< |
func(&qt,f,argptr); |
390 |
> |
F_FUNC(func)(qt,F_ARGS(func),f); |
391 |
|
if(QT_FLAG_IS_DONE(*f)) |
392 |
+ |
return; |
393 |
+ |
/* Advance to next node */ |
394 |
+ |
nbr = move_to_nbr(b,db0,db1,db2,&t); |
395 |
+ |
|
396 |
+ |
if(nbr==-1) |
397 |
|
{ |
398 |
< |
if(!QT_IS_EMPTY(qt)) |
399 |
< |
QT_LEAF_SET_FLAG(qt); |
590 |
< |
return(qt); |
398 |
> |
QT_FLAG_SET_DONE(*f); |
399 |
> |
return; |
400 |
|
} |
401 |
+ |
b[0] += (BCOORD)(t *db0); |
402 |
+ |
b[1] += (BCOORD)(t *db1); |
403 |
+ |
b[2] += (BCOORD)(t *db2); |
404 |
+ |
*nextptr = nbr; |
405 |
+ |
return; |
406 |
|
|
407 |
< |
if(!QT_IS_EMPTY(qt)) |
408 |
< |
QT_LEAF_SET_FLAG(qt); |
409 |
< |
/* Advance to next node */ |
410 |
< |
w = *wptr; |
411 |
< |
while(1) |
412 |
< |
{ |
413 |
< |
nbr = move_to_nbri(b,db0,db1,db2,&t_i); |
414 |
< |
|
415 |
< |
t_g = t_i >> sfactor; |
416 |
< |
|
417 |
< |
if(t_g >= t[w]) |
418 |
< |
{ |
419 |
< |
if(w == 2) |
420 |
< |
{ |
421 |
< |
QT_FLAG_SET_DONE(*f); |
422 |
< |
return(qt); |
423 |
< |
} |
424 |
< |
/* The edge fits in the cell- therefore the result of shifting |
425 |
< |
db by sfactor is guaranteed to be less than MAXBCOORD |
426 |
< |
*/ |
427 |
< |
/* Caution: (t[w]*db) must occur before divide by MAXBCOORD |
428 |
< |
since t[w] will always be < MAXBCOORD |
429 |
< |
*/ |
430 |
< |
l = t[w] << sfactor; |
431 |
< |
/* NOTE: Change divides to Shift and multiply by sign*/ |
432 |
< |
b[0] += (l*db0)/MAXBCOORD; |
433 |
< |
b[1] += (l*db1)/MAXBCOORD; |
434 |
< |
b[2] += (l*db2)/MAXBCOORD; |
435 |
< |
w++; |
436 |
< |
db0 = db[w][0]; db1 = db[w][1]; db2 = db[w][2]; |
437 |
< |
if(sign) |
438 |
< |
{ db0 *= -1;db1 *= -1; db2 *= -1;} |
439 |
< |
} |
440 |
< |
else |
441 |
< |
{ |
442 |
< |
/* Caution: (t_i*db) must occur before divide by MAXBCOORD |
443 |
< |
since t_i will always be < MAXBCOORD*/ |
444 |
< |
/* NOTE: Change divides to Shift and by sign*/ |
445 |
< |
b[0] += (t_i *db0) / MAXBCOORD; |
446 |
< |
b[1] += (t_i *db1) / MAXBCOORD; |
447 |
< |
b[2] += (t_i *db2) / MAXBCOORD; |
448 |
< |
|
449 |
< |
t[w] -= t_g; |
450 |
< |
*wptr = w; |
451 |
< |
*nextptr = nbr; |
452 |
< |
return(qt); |
453 |
< |
} |
454 |
< |
} |
455 |
< |
} |
407 |
> |
} |
408 |
> |
} |
409 |
> |
|
410 |
> |
#define TEST_INT(tl,th,d,q0,q1,h,l) \ |
411 |
> |
tl=d>q0;th=d<q1; if(tl&&th) goto Lfunc_call; \ |
412 |
> |
if(tl) if(l) goto Lfunc_call; else h=TRUE; \ |
413 |
> |
if(th) if(h) goto Lfunc_call; else l = TRUE; \ |
414 |
> |
if(th) if(h) goto Lfunc_call; else l = TRUE; |
415 |
> |
|
416 |
> |
/* Leaf node: Do definitive test */ |
417 |
> |
QUADTREE |
418 |
> |
qtLeaf_insert_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
419 |
> |
scale, s0,s1,s2,sq0,sq1,sq2,f,n) |
420 |
> |
int root; |
421 |
> |
QUADTREE qt; |
422 |
> |
BCOORD q0[3],q1[3],q2[3]; |
423 |
> |
BCOORD t0[3],t1[3],t2[3]; |
424 |
> |
BCOORD dt10[3],dt21[3],dt02[3]; |
425 |
> |
unsigned int scale,s0,s1,s2,sq0,sq1,sq2; |
426 |
> |
FUNC f; |
427 |
> |
int n; |
428 |
> |
{ |
429 |
> |
double db; |
430 |
> |
unsigned int e0,e1,e2; |
431 |
> |
char al,ah,bl,bh,cl,ch,testl,testh; |
432 |
> |
char test_t0t1,test_t1t2,test_t2t0; |
433 |
> |
BCOORD a,b,c; |
434 |
> |
|
435 |
> |
/* First check if can trivial accept: if vertex in cell */ |
436 |
> |
if(s0 & s1 & s2) |
437 |
> |
{ |
438 |
> |
goto Lfunc_call; |
439 |
> |
} |
440 |
> |
/* Assumption: Could not trivial reject*/ |
441 |
> |
/* IF any coords lie on edge- must be in if couldnt reject */ |
442 |
> |
a = q1[0];b= q0[1]; c= q0[2]; |
443 |
> |
if(t0[0]== a || t0[1] == b || t0[2] == c) |
444 |
> |
{ |
445 |
> |
goto Lfunc_call; |
446 |
> |
} |
447 |
> |
if(t1[0]== a || t1[1] == b || t1[2] == c) |
448 |
> |
{ |
449 |
> |
goto Lfunc_call; |
450 |
> |
} |
451 |
> |
if(t2[0]== a || t2[1] == b || t2[2] == c) |
452 |
> |
{ |
453 |
> |
goto Lfunc_call; |
454 |
> |
} |
455 |
> |
/* Test for edge crossings */ |
456 |
> |
/* Test t0t1,t1t2,t2t0 against a */ |
457 |
> |
/* Calculate edge crossings */ |
458 |
> |
e0 = (s0 ^ ((s0 >> 1) | (s0 << 2 & 4))); |
459 |
> |
/* See if edge can be trivially rejected from intersetion testing */ |
460 |
> |
test_t0t1 = !(((s0 & 6)==0) || ((s1 & 6)==0)|| ((s2 & 6)==0) || |
461 |
> |
((sq0 & 6)==6) ||((sq1 & 6)==6)|| ((sq2 & 6)==6)); |
462 |
> |
bl=bh=0; |
463 |
> |
if(test_t0t1 && (e0 & 2) ) |
464 |
> |
{ |
465 |
> |
/* Must do double calculation to avoid overflow */ |
466 |
> |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
467 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
468 |
> |
} |
469 |
> |
test_t1t2= !(((s0 & 3)==0) || ((s1 & 3)==0)|| ((s2 & 3)==0) || |
470 |
> |
((sq0 & 3)==3) ||((sq1 & 3)==3)|| ((sq2 & 3)==3)); |
471 |
> |
if(test_t1t2 && (e0 & 1)) |
472 |
> |
{ /* test t1t2 against a */ |
473 |
> |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
474 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
475 |
> |
} |
476 |
> |
test_t2t0 = !(((s0 & 5)==0) || ((s1 & 5)==0)|| ((s2 & 5)==0) || |
477 |
> |
((sq0 & 5)==5) ||((sq1 & 5)==5)|| ((sq2 & 5)==5)); |
478 |
> |
if(test_t2t0 && (e0 & 4)) |
479 |
> |
{ |
480 |
> |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
481 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
482 |
> |
} |
483 |
> |
e1 = (s1 ^ ((s1 >> 1) | (s1 << 2 & 4))); |
484 |
> |
cl = ch = 0; |
485 |
> |
if(test_t0t1 && (e1 & 2)) |
486 |
> |
{/* test t0t1 against b */ |
487 |
> |
db = t0[2] + dt10[2]*((double)(b-t0[1]))/dt10[1]; |
488 |
> |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
489 |
> |
} |
490 |
> |
if(test_t1t2 && (e1 & 1)) |
491 |
> |
{/* test t1t2 against b */ |
492 |
> |
db = t1[2] + dt21[2]*((double)(q0[1] - t1[1]))/dt21[1]; |
493 |
> |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
494 |
> |
} |
495 |
> |
if(test_t2t0 && (e1 & 4)) |
496 |
> |
{/* test t2t0 against b */ |
497 |
> |
db = t2[2] + dt02[2]*((double)(q0[1] - t2[1]))/dt02[1]; |
498 |
> |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
499 |
> |
} |
500 |
> |
|
501 |
> |
/* test edges against c */ |
502 |
> |
e2 = (s2 ^ ((s2 >> 1) | (s2 << 2 & 4))); |
503 |
> |
al = ah = 0; |
504 |
> |
if(test_t0t1 && (e2 & 2)) |
505 |
> |
{ /* test t0t1 against c */ |
506 |
> |
db = t0[0] + dt10[0]*((double)(c-t0[2]))/dt10[2]; |
507 |
> |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
508 |
> |
} |
509 |
> |
if(test_t1t2 && (e2 & 1)) |
510 |
> |
{ |
511 |
> |
db = t1[0] + dt21[0]*((double)(c - t1[2]))/dt21[2]; |
512 |
> |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
513 |
> |
} |
514 |
> |
if(test_t2t0 && (e2 & 4)) |
515 |
> |
{ /* test t2t0 against c */ |
516 |
> |
db = t2[0] + dt02[0]*((double)(c - t2[2]))/dt02[2]; |
517 |
> |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
518 |
> |
} |
519 |
> |
/* Only remaining case is if some edge trivially rejected */ |
520 |
> |
if(!e0 || !e1 || !e2) |
521 |
> |
return(qt); |
522 |
> |
|
523 |
> |
/* Only one/none got tested - pick either of other two/any two */ |
524 |
> |
/* Only need to test one edge */ |
525 |
> |
if(!test_t0t1 && (e0 & 2)) |
526 |
> |
{ |
527 |
> |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
528 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
529 |
> |
} |
530 |
> |
if(!test_t1t2 && (e0 & 1)) |
531 |
> |
{/* test t1t2 against a */ |
532 |
> |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
533 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
534 |
> |
} |
535 |
> |
if(!test_t2t0 && (e0 & 4)) |
536 |
> |
{ |
537 |
> |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
538 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
539 |
> |
} |
540 |
> |
|
541 |
> |
return(qt); |
542 |
> |
|
543 |
> |
Lfunc_call: |
544 |
> |
qt = f.func(f.argptr,root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
545 |
> |
s0,s1,s2,sq0,sq1,sq2,0,f,n); |
546 |
> |
return(qt); |
547 |
> |
|
548 |
|
} |
549 |
|
|
550 |
|
|
551 |
+ |
|
552 |
+ |
/* Leaf node: Do definitive test */ |
553 |
|
QUADTREE |
554 |
< |
qtRoot_visit_tri_edges(qt,q0,q1,q2,peq,tri,i_pt,wptr,nextptr,func,f,argptr) |
555 |
< |
QUADTREE qt; |
556 |
< |
FVECT q0,q1,q2; |
557 |
< |
FPEQ peq; |
558 |
< |
FVECT tri[3],i_pt; |
559 |
< |
int *wptr,*nextptr; |
560 |
< |
int (*func)(); |
561 |
< |
int *f,*argptr; |
562 |
< |
{ |
563 |
< |
int x,y,z,w,i,j,first; |
564 |
< |
QUADTREE child; |
565 |
< |
FVECT c,d,v[3]; |
566 |
< |
double b[4][3],db[3][3],et[3],exit_pt; |
567 |
< |
BCOORD bi[3]; |
568 |
< |
TINT t[3]; |
569 |
< |
BDIR dbi[3][3]; |
554 |
> |
qtLeaf_insert_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
555 |
> |
scale, s0,s1,s2,sq0,sq1,sq2,f,n) |
556 |
> |
int root; |
557 |
> |
QUADTREE qt; |
558 |
> |
BCOORD q0[3],q1[3],q2[3]; |
559 |
> |
BCOORD t0[3],t1[3],t2[3]; |
560 |
> |
BCOORD dt10[3],dt21[3],dt02[3]; |
561 |
> |
unsigned int scale,s0,s1,s2,sq0,sq1,sq2; |
562 |
> |
FUNC f; |
563 |
> |
int n; |
564 |
> |
{ |
565 |
> |
double db; |
566 |
> |
unsigned int e0,e1,e2; |
567 |
> |
BCOORD a,b,c; |
568 |
> |
double p0[2], p1[2],cp; |
569 |
> |
char al,ah,bl,bh,cl,ch; |
570 |
> |
char testl,testh,test_t0t1,test_t1t2,test_t2t0; |
571 |
> |
unsigned int ls0,ls1,ls2; |
572 |
|
|
573 |
< |
first =0; |
574 |
< |
w = *wptr; |
575 |
< |
if(w==-1) |
573 |
> |
|
574 |
> |
/* May have gotten passed trivial reject if one/two vertices are ON */ |
575 |
> |
a = q1[0];b= q0[1]; c= q0[2]; |
576 |
> |
SIDES_LESS(t0,t1,t2,ls0,ls1,ls2,a,b,c); |
577 |
> |
|
578 |
> |
/* First check if can trivial accept: if vertex in cell */ |
579 |
> |
if(ls0 & ls1 & ls2) |
580 |
|
{ |
581 |
< |
first = 1; |
668 |
< |
*wptr = w = 0; |
581 |
> |
goto Lfunc_call; |
582 |
|
} |
583 |
< |
/* Project the origin onto the root node plane */ |
583 |
> |
if(ls0==0 || ls1 == 0 || ls2 ==0) |
584 |
> |
return(qt); |
585 |
> |
/* Assumption: Could not trivial reject*/ |
586 |
> |
/* IF any coords lie on edge- must be in if couldnt reject */ |
587 |
|
|
588 |
< |
t[0] = t[1] = t[2] = 0; |
589 |
< |
/* Find the intersection point of the origin */ |
590 |
< |
/* map to 2d by dropping maximum magnitude component of normal */ |
588 |
> |
if(t0[0]== a || t0[1] == b || t0[2] == c) |
589 |
> |
{ |
590 |
> |
goto Lfunc_call; |
591 |
> |
} |
592 |
> |
if(t1[0]== a || t1[1] == b || t1[2] == c) |
593 |
> |
{ |
594 |
> |
goto Lfunc_call; |
595 |
> |
} |
596 |
> |
if(t2[0]== a || t2[1] == b || t2[2] == c) |
597 |
> |
{ |
598 |
> |
goto Lfunc_call; |
599 |
> |
} |
600 |
> |
/* Test for edge crossings */ |
601 |
> |
/* Test t0t1 against a,b,c */ |
602 |
> |
/* First test if t0t1 can be trivially rejected */ |
603 |
> |
/* If both edges are outside bounds- dont need to test */ |
604 |
> |
|
605 |
> |
/* Test t0t1,t1t2,t2t0 against a */ |
606 |
> |
test_t0t1 = !(((ls0 & 6)==0) || ((ls1 & 6)==0)|| ((ls2 & 6)==0) || |
607 |
> |
((sq0 & 6)==0) ||((sq1 & 6)==0)|| ((sq2 & 6)==0)); |
608 |
> |
e0 = (ls0 ^ ((ls0 >> 1) | (ls0 << 2 & 4))); |
609 |
> |
bl=bh=0; |
610 |
> |
/* Test t0t1,t1t2,t2t0 against a */ |
611 |
> |
if(test_t0t1 && (e0 & 2) ) |
612 |
> |
{ |
613 |
> |
db = t0[1] + dt10[1]*((double)(a-t0[0])/dt10[0]); |
614 |
> |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
615 |
> |
} |
616 |
> |
test_t1t2= !(((ls0 & 3)==0) || ((ls1 & 3)==0)|| ((ls2 & 3)==0) || |
617 |
> |
((sq0 & 3)==0) ||((sq1 & 3)==0)|| ((sq2 & 3)==0)); |
618 |
> |
if(test_t1t2 && (e0 & 1)) |
619 |
> |
{ /* test t1t2 against a */ |
620 |
> |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
621 |
> |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
622 |
> |
} |
623 |
> |
test_t2t0 = !(((ls0 & 5)==0) || ((ls1 & 5)==0)|| ((ls2 & 5)==0) || |
624 |
> |
((sq0 & 5)==0) ||((sq1 & 5)==0)|| ((sq2 & 5)==0)); |
625 |
> |
if(test_t2t0 && (e0 & 4)) |
626 |
> |
{ |
627 |
> |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
628 |
> |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
629 |
> |
} |
630 |
> |
cl = ch = 0; |
631 |
> |
e1 = (ls1 ^ ((ls1 >> 1) | (ls1 << 2 & 4))); |
632 |
> |
if(test_t0t1 && (e1 & 2)) |
633 |
> |
{/* test t0t1 against b */ |
634 |
> |
db = t0[2] + dt10[2]*(((double)(b-t0[1]))/dt10[1]); |
635 |
> |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
636 |
> |
} |
637 |
> |
if(test_t1t2 && (e1 & 1)) |
638 |
> |
{/* test t1t2 against b */ |
639 |
> |
db = t1[2] + dt21[2]*((double)(b - t1[1]))/dt21[1]; |
640 |
> |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
641 |
> |
} |
642 |
> |
if(test_t2t0 && (e1 & 4)) |
643 |
> |
{/* test t2t0 against b */ |
644 |
> |
db = t2[2] + dt02[2]*((double)(b - t2[1]))/dt02[1]; |
645 |
> |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
646 |
> |
} |
647 |
> |
al = ah = 0; |
648 |
> |
e2 = (ls2 ^ ((ls2 >> 1) | (ls2 << 2 & 4))); |
649 |
> |
if(test_t0t1 && (e2 & 2)) |
650 |
> |
{ /* test t0t1 against c */ |
651 |
> |
db = t0[0] + dt10[0]*(((double)(c-t0[2]))/dt10[2]); |
652 |
> |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
653 |
> |
} |
654 |
> |
if(test_t1t2 && (e2 & 1)) |
655 |
> |
{ |
656 |
> |
db = t1[0] + dt21[0]*((double)(c - t1[2]))/dt21[2]; |
657 |
> |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
658 |
> |
} |
659 |
> |
if(test_t2t0 && (e2 & 4)) |
660 |
> |
{ /* test t2t0 against c */ |
661 |
> |
db = t2[0] + dt02[0]*((double)(c - t2[2]))/dt02[2]; |
662 |
> |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
663 |
> |
} |
664 |
> |
/* Only remaining case is if some edge trivially rejected */ |
665 |
> |
if(!e0 || !e1 || !e2) |
666 |
> |
return(qt); |
667 |
|
|
668 |
< |
x = FP_X(peq); |
669 |
< |
y = FP_Y(peq); |
670 |
< |
z = FP_Z(peq); |
679 |
< |
/* Calculate barycentric coordinates for current vertex */ |
680 |
< |
if(!first) |
681 |
< |
bary2d(q0[x],q0[y],q1[x],q1[y],q2[x],q2[y],i_pt[x],i_pt[y],b[3]); |
682 |
< |
else |
683 |
< |
/* Just starting: b[0] is the origin point: guaranteed to be valid b*/ |
668 |
> |
/* Only one/none got tested - pick either of other two/any two */ |
669 |
> |
/* Only need to test one edge */ |
670 |
> |
if(!test_t0t1 && (e0 & 2)) |
671 |
|
{ |
672 |
< |
intersect_vector_plane(tri[0],peq,&(et[0]),v[0]); |
673 |
< |
bary2d(q0[x],q0[y],q1[x],q1[y],q2[x],q2[y],v[0][x],v[0][y],b[0]); |
687 |
< |
VCOPY(b[3],b[0]); |
672 |
> |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
673 |
> |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
674 |
|
} |
675 |
+ |
if(!test_t1t2 && (e0 & 1)) |
676 |
+ |
{/* test t1t2 against a */ |
677 |
+ |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
678 |
+ |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
679 |
+ |
} |
680 |
+ |
if(!test_t2t0 && (e0 & 4)) |
681 |
+ |
{ |
682 |
+ |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
683 |
+ |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
684 |
+ |
} |
685 |
|
|
686 |
< |
j = (w+1)%3; |
687 |
< |
intersect_vector_plane(tri[j],peq,&(et[j]),v[j]); |
688 |
< |
bary2d(q0[x],q0[y],q1[x],q1[y],q2[x],q2[y],v[j][x],v[j][y],b[j]); |
689 |
< |
if(et[j] < 0.0) |
686 |
> |
return(qt); |
687 |
> |
Lfunc_call: |
688 |
> |
qt = f.func(f.argptr,root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
689 |
> |
s0,s1,s2,sq0,sq1,sq2,1,f,n); |
690 |
> |
return(qt); |
691 |
> |
} |
692 |
> |
|
693 |
> |
|
694 |
> |
|
695 |
> |
/* ASSUMPTION: that triangle t0,t1,t2 intersects quad cell q0,q1,q2 */ |
696 |
> |
|
697 |
> |
/*-------q2--------- sq2 |
698 |
> |
/ \ |
699 |
> |
s1 /sc \ s0 |
700 |
> |
qb_____qa |
701 |
> |
/ \ / \ |
702 |
> |
\sq0/sa \ /sb \ /sq1 |
703 |
> |
\ q0____qc____q1/ |
704 |
> |
\ / |
705 |
> |
\ s2 / |
706 |
> |
*/ |
707 |
> |
|
708 |
> |
int Find_id=0; |
709 |
> |
|
710 |
> |
QUADTREE |
711 |
> |
qtInsert_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
712 |
> |
s0,s1,s2,sq0,sq1,sq2,f,n) |
713 |
> |
int root; |
714 |
> |
QUADTREE qt; |
715 |
> |
BCOORD q0[3],q1[3],q2[3]; |
716 |
> |
BCOORD t0[3],t1[3],t2[3]; |
717 |
> |
BCOORD dt10[3],dt21[3],dt02[3]; |
718 |
> |
BCOORD scale; |
719 |
> |
unsigned int s0,s1,s2,sq0,sq1,sq2; |
720 |
> |
FUNC f; |
721 |
> |
int n; |
722 |
> |
{ |
723 |
> |
BCOORD a,b,c; |
724 |
> |
BCOORD va[3],vb[3],vc[3]; |
725 |
> |
unsigned int sa,sb,sc; |
726 |
> |
|
727 |
> |
/* If a tree: trivial reject and recurse on potential children */ |
728 |
> |
if(QT_IS_TREE(qt)) |
729 |
|
{ |
730 |
< |
VSUB(db[w],b[3],b[j]); |
731 |
< |
t[w] = HUGET; |
730 |
> |
/* Test against new a edge: if entirely to left: only need |
731 |
> |
to visit child 0 |
732 |
> |
*/ |
733 |
> |
a = q1[0] + scale; |
734 |
> |
b = q0[1] + scale; |
735 |
> |
c = q0[2] + scale; |
736 |
> |
|
737 |
> |
SIDES_GTR(t0,t1,t2,sa,sb,sc,a,b,c); |
738 |
> |
|
739 |
> |
if(sa==7) |
740 |
> |
{ |
741 |
> |
vb[1] = q0[1]; |
742 |
> |
vc[2] = q0[2]; |
743 |
> |
vc[1] = b; |
744 |
> |
vb[2] = c; |
745 |
> |
vb[0] = vc[0] = a; |
746 |
> |
QT_NTH_CHILD(qt,0) = qtInsert_tri(root,QT_NTH_CHILD(qt,0),q0,vc, |
747 |
> |
vb,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,s1,s2,sq0,sb,sc,f,n+1); |
748 |
> |
return(qt); |
749 |
> |
} |
750 |
> |
if(sb==7) |
751 |
> |
{ |
752 |
> |
va[0] = q1[0]; |
753 |
> |
vc[2] = q0[2]; |
754 |
> |
va[1] = vc[1] = b; |
755 |
> |
va[2] = c; |
756 |
> |
vc[0] = a; |
757 |
> |
QT_NTH_CHILD(qt,1) = qtInsert_tri(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
758 |
> |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n+1); |
759 |
> |
return(qt); |
760 |
> |
} |
761 |
> |
if(sc==7) |
762 |
> |
{ |
763 |
> |
va[0] = q1[0]; |
764 |
> |
vb[1] = q0[1]; |
765 |
> |
va[1] = b; |
766 |
> |
va[2] = vb[2] = c; |
767 |
> |
vb[0] = a; |
768 |
> |
QT_NTH_CHILD(qt,2) = qtInsert_tri(root,QT_NTH_CHILD(qt,2),vb,va, |
769 |
> |
q2,t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n+1); |
770 |
> |
return(qt); |
771 |
> |
} |
772 |
> |
|
773 |
> |
va[0] = q1[0]; |
774 |
> |
vb[1] = q0[1]; |
775 |
> |
vc[2] = q0[2]; |
776 |
> |
va[1] = vc[1] = b; |
777 |
> |
va[2] = vb[2] = c; |
778 |
> |
vb[0] = vc[0] = a; |
779 |
> |
/* If outside of all edges: only need to Visit 3 */ |
780 |
> |
if(sa==0 && sb==0 && sc==0) |
781 |
> |
{ |
782 |
> |
QT_NTH_CHILD(qt,3) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,3),va,vb, |
783 |
> |
vc,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,sb,sc,s0,s1,s2,f,n+1); |
784 |
> |
return(qt); |
785 |
> |
} |
786 |
> |
|
787 |
> |
if(sa) |
788 |
> |
QT_NTH_CHILD(qt,0) = qtInsert_tri(root,QT_NTH_CHILD(qt,0),q0,vc,vb,t0, |
789 |
> |
t1,t2,dt10,dt21,dt02,scale>>1,sa,s1,s2,sq0,sb,sc,f,n+1); |
790 |
> |
if(sb) |
791 |
> |
QT_NTH_CHILD(qt,1) = qtInsert_tri(root,QT_NTH_CHILD(qt,1),vc,q1,va,t0, |
792 |
> |
t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n+1); |
793 |
> |
if(sc) |
794 |
> |
QT_NTH_CHILD(qt,2) = qtInsert_tri(root,QT_NTH_CHILD(qt,2),vb,va,q2,t0, |
795 |
> |
t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n+1); |
796 |
> |
QT_NTH_CHILD(qt,3) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,3),va,vb,vc,t0, |
797 |
> |
t1,t2,dt10,dt21,dt02,scale>>1,sa,sb,sc,s0,s1,s2,f,n+1); |
798 |
> |
return(qt); |
799 |
|
} |
800 |
+ |
/* Leaf node: Do definitive test */ |
801 |
|
else |
802 |
< |
{ |
803 |
< |
/* NOTE: for stability: do not increment with ipt- use full dir and |
804 |
< |
calculate t: but for wrap around case: could get same problem? |
805 |
< |
*/ |
806 |
< |
VSUB(db[w],b[j],b[3]); |
807 |
< |
/* Check if the point is out side of the triangle: if so t[w] =HUGET */ |
808 |
< |
if((fabs(b[j][0])>(FTINY+1.0)) ||(fabs(b[j][1])>(FTINY+1.0)) || |
809 |
< |
(fabs(b[j][2])>(FTINY+1.0))||(b[j][0] <-FTINY) || |
810 |
< |
(b[j][1]<-FTINY) ||(b[j][2]<-FTINY)) |
811 |
< |
t[w] = HUGET; |
812 |
< |
else |
802 |
> |
return(qt = qtLeaf_insert_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
803 |
> |
scale,s0,s1,s2,sq0,sq1,sq2,f,n)); |
804 |
> |
} |
805 |
> |
|
806 |
> |
|
807 |
> |
QUADTREE |
808 |
> |
qtInsert_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
809 |
> |
s0,s1,s2,sq0,sq1,sq2,f,n) |
810 |
> |
int root; |
811 |
> |
QUADTREE qt; |
812 |
> |
BCOORD q0[3],q1[3],q2[3]; |
813 |
> |
BCOORD t0[3],t1[3],t2[3]; |
814 |
> |
BCOORD dt10[3],dt21[3],dt02[3]; |
815 |
> |
BCOORD scale; |
816 |
> |
unsigned int s0,s1,s2,sq0,sq1,sq2; |
817 |
> |
FUNC f; |
818 |
> |
int n; |
819 |
> |
{ |
820 |
> |
BCOORD a,b,c; |
821 |
> |
BCOORD va[3],vb[3],vc[3]; |
822 |
> |
unsigned int sa,sb,sc; |
823 |
> |
|
824 |
> |
/* If a tree: trivial reject and recurse on potential children */ |
825 |
> |
if(QT_IS_TREE(qt)) |
826 |
> |
{ |
827 |
> |
/* Test against new a edge: if entirely to left: only need |
828 |
> |
to visit child 0 |
829 |
> |
*/ |
830 |
> |
a = q1[0] - scale; |
831 |
> |
b = q0[1] - scale; |
832 |
> |
c = q0[2] - scale; |
833 |
> |
|
834 |
> |
SIDES_GTR(t0,t1,t2,sa,sb,sc,a,b,c); |
835 |
> |
|
836 |
> |
if(sa==0) |
837 |
> |
{ |
838 |
> |
vb[1] = q0[1]; |
839 |
> |
vc[2] = q0[2]; |
840 |
> |
vc[1] = b; |
841 |
> |
vb[2] = c; |
842 |
> |
vb[0] = vc[0] = a; |
843 |
> |
|
844 |
> |
QT_NTH_CHILD(qt,0) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,0),q0,vc, |
845 |
> |
vb,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,s1,s2,sq0,sb,sc,f,n+1); |
846 |
> |
return(qt); |
847 |
> |
} |
848 |
> |
if(sb==0) |
849 |
> |
{ |
850 |
> |
va[0] = q1[0]; |
851 |
> |
vc[2] = q0[2]; |
852 |
> |
va[1] = vc[1] = b; |
853 |
> |
va[2] = c; |
854 |
> |
vc[0] = a; |
855 |
> |
QT_NTH_CHILD(qt,1) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
856 |
> |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n+1); |
857 |
> |
return(qt); |
858 |
> |
} |
859 |
> |
if(sc==0) |
860 |
> |
{ |
861 |
> |
va[0] = q1[0]; |
862 |
> |
vb[1] = q0[1]; |
863 |
> |
va[1] = b; |
864 |
> |
va[2] = vb[2] = c; |
865 |
> |
vb[0] = a; |
866 |
> |
QT_NTH_CHILD(qt,2) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,2),vb,va, |
867 |
> |
q2,t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n+1); |
868 |
> |
return(qt); |
869 |
> |
} |
870 |
> |
va[0] = q1[0]; |
871 |
> |
vb[1] = q0[1]; |
872 |
> |
vc[2] = q0[2]; |
873 |
> |
va[1] = vc[1] = b; |
874 |
> |
va[2] = vb[2] = c; |
875 |
> |
vb[0] = vc[0] = a; |
876 |
> |
/* If outside of all edges: only need to Visit 3 */ |
877 |
> |
if(sa==7 && sb==7 && sc==7) |
878 |
> |
{ |
879 |
> |
QT_NTH_CHILD(qt,3) = qtInsert_tri(root,QT_NTH_CHILD(qt,3),va,vb, |
880 |
> |
vc,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,sb,sc,s0,s1,s2,f,n+1); |
881 |
> |
return(qt); |
882 |
> |
} |
883 |
> |
if(sa!=7) |
884 |
> |
QT_NTH_CHILD(qt,0) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,0),q0,vc,vb, |
885 |
> |
t0,t1,t2,dt10,dt21,dt02,scale>>1,sa,s1,s2,sq0,sb,sc,f,n+1); |
886 |
> |
if(sb!=7) |
887 |
> |
QT_NTH_CHILD(qt,1) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
888 |
> |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n+1); |
889 |
> |
if(sc!=7) |
890 |
> |
QT_NTH_CHILD(qt,2) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,2),vb,va,q2, |
891 |
> |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n+1); |
892 |
> |
|
893 |
> |
QT_NTH_CHILD(qt,3) = qtInsert_tri(root,QT_NTH_CHILD(qt,3),va,vb,vc,t0,t1, |
894 |
> |
t2,dt10,dt21,dt02,scale>>1,sa,sb,sc,s0,s1,s2,f,n+1); |
895 |
> |
return(qt); |
896 |
> |
} |
897 |
> |
/* Leaf node: Do definitive test */ |
898 |
> |
else |
899 |
> |
return(qt = qtLeaf_insert_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
900 |
> |
scale,s0,s1,s2,sq0,sq1,sq2,f,n)); |
901 |
> |
} |
902 |
> |
|
903 |
> |
|
904 |
> |
|
905 |
> |
|
906 |
> |
/*************************************************************************/ |
907 |
> |
/* Visit code for applying functions: NOTE THIS IS THE SAME AS INSERT CODE: |
908 |
> |
except sets flags: wanted insert to be as efficient as possible: so |
909 |
> |
broke into two sets of routines. Also traverses only to n levels. |
910 |
> |
*/ |
911 |
> |
|
912 |
> |
qtVisit_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
913 |
> |
s0,s1,s2,sq0,sq1,sq2,f,n) |
914 |
> |
int root; |
915 |
> |
QUADTREE qt; |
916 |
> |
BCOORD q0[3],q1[3],q2[3]; |
917 |
> |
BCOORD t0[3],t1[3],t2[3]; |
918 |
> |
BCOORD dt10[3],dt21[3],dt02[3]; |
919 |
> |
BCOORD scale; |
920 |
> |
unsigned int s0,s1,s2,sq0,sq1,sq2; |
921 |
> |
FUNC f; |
922 |
> |
int n; |
923 |
> |
{ |
924 |
> |
BCOORD a,b,c; |
925 |
> |
BCOORD va[3],vb[3],vc[3]; |
926 |
> |
unsigned int sa,sb,sc; |
927 |
> |
|
928 |
> |
if(n == 0) |
929 |
> |
return; |
930 |
> |
/* If a tree: trivial reject and recurse on potential children */ |
931 |
> |
if(QT_IS_TREE(qt)) |
932 |
> |
{ |
933 |
> |
QT_SET_FLAG(qt); |
934 |
> |
|
935 |
> |
/* Test against new a edge: if entirely to left: only need |
936 |
> |
to visit child 0 |
937 |
> |
*/ |
938 |
> |
a = q1[0] + scale; |
939 |
> |
b = q0[1] + scale; |
940 |
> |
c = q0[2] + scale; |
941 |
> |
|
942 |
> |
SIDES_GTR(t0,t1,t2,sa,sb,sc,a,b,c); |
943 |
> |
|
944 |
> |
if(sa==7) |
945 |
> |
{ |
946 |
> |
vb[1] = q0[1]; |
947 |
> |
vc[2] = q0[2]; |
948 |
> |
vc[1] = b; |
949 |
> |
vb[2] = c; |
950 |
> |
vb[0] = vc[0] = a; |
951 |
> |
qtVisit_tri(root,QT_NTH_CHILD(qt,0),q0,vc, |
952 |
> |
vb,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,s1,s2,sq0,sb,sc,f,n-1); |
953 |
> |
return; |
954 |
> |
} |
955 |
> |
if(sb==7) |
956 |
|
{ |
957 |
< |
/* The next point is in the triangle- so db values will be in valid |
958 |
< |
range and t[w]= MAXT |
959 |
< |
*/ |
960 |
< |
t[w] = MAXT; |
961 |
< |
if(j != 0) |
962 |
< |
for(;j < 3;j++) |
963 |
< |
{ |
964 |
< |
i = (j+1)%3; |
719 |
< |
if(!first || i != 0) |
720 |
< |
{ |
721 |
< |
intersect_vector_plane(tri[i],peq,&(et[i]),v[i]); |
722 |
< |
bary2d(q0[x],q0[y],q1[x],q1[y],q2[x],q2[y],v[i][x], |
723 |
< |
v[i][y],b[i]); |
724 |
< |
} |
725 |
< |
if(et[i] < 0.0) |
726 |
< |
{ |
727 |
< |
VSUB(db[j],b[j],b[i]); |
728 |
< |
t[j] = HUGET; |
729 |
< |
break; |
730 |
< |
} |
731 |
< |
else |
732 |
< |
{ |
733 |
< |
VSUB(db[j],b[i],b[j]); |
734 |
< |
if((fabs(b[j][0])>(FTINY+1.0))||(fabs(b[j][1])>(FTINY+1.0)) || |
735 |
< |
(fabs(b[j][2])>(FTINY+1.0))||(b[i][0] <-FTINY) || |
736 |
< |
(b[i][1]<-FTINY) ||(b[i][2]<-FTINY)) |
737 |
< |
{ |
738 |
< |
t[j] = HUGET; |
739 |
< |
break; |
740 |
< |
} |
741 |
< |
else |
742 |
< |
t[j] = MAXT; |
743 |
< |
} |
744 |
< |
} |
957 |
> |
va[0] = q1[0]; |
958 |
> |
vc[2] = q0[2]; |
959 |
> |
va[1] = vc[1] = b; |
960 |
> |
va[2] = c; |
961 |
> |
vc[0] = a; |
962 |
> |
qtVisit_tri(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
963 |
> |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n-1); |
964 |
> |
return; |
965 |
|
} |
966 |
< |
} |
967 |
< |
bary_dtol(b[3],db,bi,dbi,t,w); |
966 |
> |
if(sc==7) |
967 |
> |
{ |
968 |
> |
va[0] = q1[0]; |
969 |
> |
vb[1] = q0[1]; |
970 |
> |
va[1] = b; |
971 |
> |
va[2] = vb[2] = c; |
972 |
> |
vb[0] = a; |
973 |
> |
qtVisit_tri(root,QT_NTH_CHILD(qt,2),vb,va, |
974 |
> |
q2,t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n-1); |
975 |
> |
return; |
976 |
> |
} |
977 |
> |
|
978 |
> |
va[0] = q1[0]; |
979 |
> |
vb[1] = q0[1]; |
980 |
> |
vc[2] = q0[2]; |
981 |
> |
va[1] = vc[1] = b; |
982 |
> |
va[2] = vb[2] = c; |
983 |
> |
vb[0] = vc[0] = a; |
984 |
> |
/* If outside of all edges: only need to Visit 3 */ |
985 |
> |
if(sa==0 && sb==0 && sc==0) |
986 |
> |
{ |
987 |
> |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,3),va,vb, |
988 |
> |
vc,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,sb,sc,s0,s1,s2,f,n-1); |
989 |
> |
return; |
990 |
> |
} |
991 |
> |
|
992 |
> |
if(sa) |
993 |
> |
qtVisit_tri(root,QT_NTH_CHILD(qt,0),q0,vc,vb,t0, |
994 |
> |
t1,t2,dt10,dt21,dt02,scale>>1,sa,s1,s2,sq0,sb,sc,f,n-1); |
995 |
> |
if(sb) |
996 |
> |
qtVisit_tri(root,QT_NTH_CHILD(qt,1),vc,q1,va,t0, |
997 |
> |
t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n-1); |
998 |
> |
if(sc) |
999 |
> |
qtVisit_tri(root,QT_NTH_CHILD(qt,2),vb,va,q2,t0, |
1000 |
> |
t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n-1); |
1001 |
> |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,3),va,vb,vc,t0, |
1002 |
> |
t1,t2,dt10,dt21,dt02,scale>>1,sa,sb,sc,s0,s1,s2,f,n-1); |
1003 |
> |
} |
1004 |
> |
/* Leaf node: Do definitive test */ |
1005 |
> |
else |
1006 |
> |
qtLeaf_visit_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
1007 |
> |
scale,s0,s1,s2,sq0,sq1,sq2,f,n); |
1008 |
> |
|
1009 |
> |
} |
1010 |
> |
|
1011 |
> |
|
1012 |
> |
qtVisit_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
1013 |
> |
s0,s1,s2,sq0,sq1,sq2,f,n) |
1014 |
> |
int root; |
1015 |
> |
QUADTREE qt; |
1016 |
> |
BCOORD q0[3],q1[3],q2[3]; |
1017 |
> |
BCOORD t0[3],t1[3],t2[3]; |
1018 |
> |
BCOORD dt10[3],dt21[3],dt02[3]; |
1019 |
> |
BCOORD scale; |
1020 |
> |
unsigned int s0,s1,s2,sq0,sq1,sq2; |
1021 |
> |
FUNC f; |
1022 |
> |
int n; |
1023 |
> |
{ |
1024 |
> |
BCOORD a,b,c; |
1025 |
> |
BCOORD va[3],vb[3],vc[3]; |
1026 |
> |
unsigned int sa,sb,sc; |
1027 |
> |
|
1028 |
> |
if(n==0) |
1029 |
> |
return; |
1030 |
> |
/* If a tree: trivial reject and recurse on potential children */ |
1031 |
> |
if(QT_IS_TREE(qt)) |
1032 |
> |
{ |
1033 |
> |
QT_SET_FLAG(qt); |
1034 |
> |
/* Test against new a edge: if entirely to left: only need |
1035 |
> |
to visit child 0 |
1036 |
> |
*/ |
1037 |
> |
a = q1[0] - scale; |
1038 |
> |
b = q0[1] - scale; |
1039 |
> |
c = q0[2] - scale; |
1040 |
> |
|
1041 |
> |
SIDES_GTR(t0,t1,t2,sa,sb,sc,a,b,c); |
1042 |
> |
|
1043 |
> |
if(sa==0) |
1044 |
> |
{ |
1045 |
> |
vb[1] = q0[1]; |
1046 |
> |
vc[2] = q0[2]; |
1047 |
> |
vc[1] = b; |
1048 |
> |
vb[2] = c; |
1049 |
> |
vb[0] = vc[0] = a; |
1050 |
> |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,0),q0,vc, |
1051 |
> |
vb,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,s1,s2,sq0,sb,sc,f,n-1); |
1052 |
> |
return; |
1053 |
> |
} |
1054 |
> |
if(sb==0) |
1055 |
> |
{ |
1056 |
> |
va[0] = q1[0]; |
1057 |
> |
vc[2] = q0[2]; |
1058 |
> |
va[1] = vc[1] = b; |
1059 |
> |
va[2] = c; |
1060 |
> |
vc[0] = a; |
1061 |
> |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
1062 |
> |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n-1); |
1063 |
> |
return; |
1064 |
> |
} |
1065 |
> |
if(sc==0) |
1066 |
> |
{ |
1067 |
> |
va[0] = q1[0]; |
1068 |
> |
vb[1] = q0[1]; |
1069 |
> |
va[1] = b; |
1070 |
> |
va[2] = vb[2] = c; |
1071 |
> |
vb[0] = a; |
1072 |
> |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,2),vb,va, |
1073 |
> |
q2,t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n-1); |
1074 |
> |
return; |
1075 |
> |
} |
1076 |
> |
va[0] = q1[0]; |
1077 |
> |
vb[1] = q0[1]; |
1078 |
> |
vc[2] = q0[2]; |
1079 |
> |
va[1] = vc[1] = b; |
1080 |
> |
va[2] = vb[2] = c; |
1081 |
> |
vb[0] = vc[0] = a; |
1082 |
> |
/* If outside of all edges: only need to Visit 3 */ |
1083 |
> |
if(sa==7 && sb==7 && sc==7) |
1084 |
> |
{ |
1085 |
> |
qtVisit_tri(root,QT_NTH_CHILD(qt,3),va,vb, |
1086 |
> |
vc,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,sb,sc,s0,s1,s2,f,n-1); |
1087 |
> |
return; |
1088 |
> |
} |
1089 |
> |
if(sa!=7) |
1090 |
> |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,0),q0,vc,vb, |
1091 |
> |
t0,t1,t2,dt10,dt21,dt02,scale>>1,sa,s1,s2,sq0,sb,sc,f,n-1); |
1092 |
> |
if(sb!=7) |
1093 |
> |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
1094 |
> |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n-1); |
1095 |
> |
if(sc!=7) |
1096 |
> |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,2),vb,va,q2, |
1097 |
> |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n-1); |
1098 |
> |
|
1099 |
> |
qtVisit_tri(root,QT_NTH_CHILD(qt,3),va,vb,vc,t0,t1, |
1100 |
> |
t2,dt10,dt21,dt02,scale>>1,sa,sb,sc,s0,s1,s2,f,n-1); |
1101 |
> |
return; |
1102 |
> |
} |
1103 |
> |
/* Leaf node: Do definitive test */ |
1104 |
> |
else |
1105 |
> |
qtLeaf_visit_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
1106 |
> |
scale,s0,s1,s2,sq0,sq1,sq2,f,n); |
1107 |
> |
} |
1108 |
> |
|
1109 |
> |
|
1110 |
> |
|
1111 |
> |
qtLeaf_visit_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
1112 |
> |
scale, s0,s1,s2,sq0,sq1,sq2,f,n) |
1113 |
> |
int root; |
1114 |
> |
QUADTREE qt; |
1115 |
> |
BCOORD q0[3],q1[3],q2[3]; |
1116 |
> |
BCOORD t0[3],t1[3],t2[3]; |
1117 |
> |
BCOORD dt10[3],dt21[3],dt02[3]; |
1118 |
> |
unsigned int scale,s0,s1,s2,sq0,sq1,sq2; |
1119 |
> |
FUNC f; |
1120 |
> |
int n; |
1121 |
> |
{ |
1122 |
> |
double db; |
1123 |
> |
unsigned int e0,e1,e2; |
1124 |
> |
char al,ah,bl,bh,cl,ch,testl,testh; |
1125 |
> |
char test_t0t1,test_t1t2,test_t2t0; |
1126 |
> |
BCOORD a,b,c; |
1127 |
|
|
1128 |
< |
/* trace the ray starting with this node */ |
1129 |
< |
qt = qtVisit_tri_edges(qt,bi,dbi[w][0],dbi[w][1],dbi[w][2], |
1130 |
< |
dbi,wptr,nextptr,t,0,0,func,f,argptr); |
1131 |
< |
if(!QT_FLAG_IS_DONE(*f)) |
1128 |
> |
/* First check if can trivial accept: if vertex in cell */ |
1129 |
> |
if(s0 & s1 & s2) |
1130 |
> |
goto Lfunc_call; |
1131 |
> |
|
1132 |
> |
/* Assumption: Could not trivial reject*/ |
1133 |
> |
/* IF any coords lie on edge- must be in if couldnt reject */ |
1134 |
> |
a = q1[0];b= q0[1]; c= q0[2]; |
1135 |
> |
if(t0[0]== a || t0[1] == b || t0[2] == c) |
1136 |
> |
goto Lfunc_call; |
1137 |
> |
if(t1[0]== a || t1[1] == b || t1[2] == c) |
1138 |
> |
goto Lfunc_call; |
1139 |
> |
if(t2[0]== a || t2[1] == b || t2[2] == c) |
1140 |
> |
goto Lfunc_call; |
1141 |
> |
|
1142 |
> |
/* Test for edge crossings */ |
1143 |
> |
/* Test t0t1,t1t2,t2t0 against a */ |
1144 |
> |
/* Calculate edge crossings */ |
1145 |
> |
e0 = (s0 ^ ((s0 >> 1) | (s0 << 2 & 4))); |
1146 |
> |
/* See if edge can be trivially rejected from intersetion testing */ |
1147 |
> |
test_t0t1 = !(((s0 & 6)==0) || ((s1 & 6)==0)|| ((s2 & 6)==0) || |
1148 |
> |
((sq0 & 6)==6) ||((sq1 & 6)==6)|| ((sq2 & 6)==6)); |
1149 |
> |
bl=bh=0; |
1150 |
> |
if(test_t0t1 && (e0 & 2) ) |
1151 |
|
{ |
1152 |
< |
b[3][0] = (double)bi[0]/(double)MAXBCOORD; |
1153 |
< |
b[3][1] = (double)bi[1]/(double)MAXBCOORD; |
1154 |
< |
b[3][2] = (double)bi[2]/(double)MAXBCOORD; |
757 |
< |
i_pt[x] = b[3][0]*q0[x] + b[3][1]*q1[x] + b[3][2]*q2[x]; |
758 |
< |
i_pt[y] = b[3][0]*q0[y] + b[3][1]*q1[y] + b[3][2]*q2[y]; |
759 |
< |
i_pt[z] = (-FP_N(peq)[x]*i_pt[x] - FP_N(peq)[y]*i_pt[y]-FP_D(peq))/FP_N(peq)[z]; |
1152 |
> |
/* Must do double calculation to avoid overflow */ |
1153 |
> |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
1154 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
1155 |
|
} |
1156 |
< |
return(qt); |
1157 |
< |
|
1156 |
> |
test_t1t2= !(((s0 & 3)==0) || ((s1 & 3)==0)|| ((s2 & 3)==0) || |
1157 |
> |
((sq0 & 3)==3) ||((sq1 & 3)==3)|| ((sq2 & 3)==3)); |
1158 |
> |
if(test_t1t2 && (e0 & 1)) |
1159 |
> |
{ /* test t1t2 against a */ |
1160 |
> |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
1161 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
1162 |
> |
} |
1163 |
> |
test_t2t0 = !(((s0 & 5)==0) || ((s1 & 5)==0)|| ((s2 & 5)==0) || |
1164 |
> |
((sq0 & 5)==5) ||((sq1 & 5)==5)|| ((sq2 & 5)==5)); |
1165 |
> |
if(test_t2t0 && (e0 & 4)) |
1166 |
> |
{ |
1167 |
> |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
1168 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
1169 |
> |
} |
1170 |
> |
e1 = (s1 ^ ((s1 >> 1) | (s1 << 2 & 4))); |
1171 |
> |
cl = ch = 0; |
1172 |
> |
if(test_t0t1 && (e1 & 2)) |
1173 |
> |
{/* test t0t1 against b */ |
1174 |
> |
db = t0[2] + dt10[2]*((double)(b-t0[1]))/dt10[1]; |
1175 |
> |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
1176 |
> |
} |
1177 |
> |
if(test_t1t2 && (e1 & 1)) |
1178 |
> |
{/* test t1t2 against b */ |
1179 |
> |
db = t1[2] + dt21[2]*((double)(q0[1] - t1[1]))/dt21[1]; |
1180 |
> |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
1181 |
> |
} |
1182 |
> |
if(test_t2t0 && (e1 & 4)) |
1183 |
> |
{/* test t2t0 against b */ |
1184 |
> |
db = t2[2] + dt02[2]*((double)(q0[1] - t2[1]))/dt02[1]; |
1185 |
> |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
1186 |
> |
} |
1187 |
> |
|
1188 |
> |
/* test edges against c */ |
1189 |
> |
e2 = (s2 ^ ((s2 >> 1) | (s2 << 2 & 4))); |
1190 |
> |
al = ah = 0; |
1191 |
> |
if(test_t0t1 && (e2 & 2)) |
1192 |
> |
{ /* test t0t1 against c */ |
1193 |
> |
db = t0[0] + dt10[0]*((double)(c-t0[2]))/dt10[2]; |
1194 |
> |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
1195 |
> |
} |
1196 |
> |
if(test_t1t2 && (e2 & 1)) |
1197 |
> |
{ |
1198 |
> |
db = t1[0] + dt21[0]*((double)(c - t1[2]))/dt21[2]; |
1199 |
> |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
1200 |
> |
} |
1201 |
> |
if(test_t2t0 && (e2 & 4)) |
1202 |
> |
{ /* test t2t0 against c */ |
1203 |
> |
db = t2[0] + dt02[0]*((double)(c - t2[2]))/dt02[2]; |
1204 |
> |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
1205 |
> |
} |
1206 |
> |
/* Only remaining case is if some edge trivially rejected */ |
1207 |
> |
if(!e0 || !e1 || !e2) |
1208 |
> |
return; |
1209 |
> |
|
1210 |
> |
/* Only one/none got tested - pick either of other two/any two */ |
1211 |
> |
/* Only need to test one edge */ |
1212 |
> |
if(!test_t0t1 && (e0 & 2)) |
1213 |
> |
{ |
1214 |
> |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
1215 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
1216 |
> |
} |
1217 |
> |
if(!test_t1t2 && (e0 & 1)) |
1218 |
> |
{/* test t1t2 against a */ |
1219 |
> |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
1220 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
1221 |
> |
} |
1222 |
> |
if(!test_t2t0 && (e0 & 4)) |
1223 |
> |
{ |
1224 |
> |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
1225 |
> |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
1226 |
> |
} |
1227 |
> |
|
1228 |
> |
return; |
1229 |
> |
|
1230 |
> |
Lfunc_call: |
1231 |
> |
|
1232 |
> |
f.func(f.argptr,root,qt,n); |
1233 |
> |
if(!QT_IS_EMPTY(qt)) |
1234 |
> |
QT_LEAF_SET_FLAG(qt); |
1235 |
> |
|
1236 |
|
} |
1237 |
|
|
1238 |
|
|
1239 |
+ |
|
1240 |
+ |
/* Leaf node: Do definitive test */ |
1241 |
|
QUADTREE |
1242 |
< |
qtRoot_trace_ray(qt,q0,q1,q2,peq,orig,dir,nextptr,func,f,argptr) |
1243 |
< |
QUADTREE qt; |
1244 |
< |
FVECT q0,q1,q2; |
1245 |
< |
FPEQ peq; |
1246 |
< |
FVECT orig,dir; |
1247 |
< |
int *nextptr; |
1248 |
< |
int (*func)(); |
1249 |
< |
int *f,*argptr; |
1250 |
< |
{ |
1251 |
< |
int x,y,z,nbr,w,i; |
1252 |
< |
QUADTREE child; |
1253 |
< |
FVECT v,i_pt; |
1254 |
< |
double b[2][3],db[3],et[2],d,br[3]; |
1255 |
< |
BCOORD bi[3]; |
1256 |
< |
TINT t[3]; |
1257 |
< |
BDIR dbi[3][3]; |
1242 |
> |
qtLeaf_visit_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
1243 |
> |
scale, s0,s1,s2,sq0,sq1,sq2,f,n) |
1244 |
> |
int root; |
1245 |
> |
QUADTREE qt; |
1246 |
> |
BCOORD q0[3],q1[3],q2[3]; |
1247 |
> |
BCOORD t0[3],t1[3],t2[3]; |
1248 |
> |
BCOORD dt10[3],dt21[3],dt02[3]; |
1249 |
> |
unsigned int scale,s0,s1,s2,sq0,sq1,sq2; |
1250 |
> |
FUNC f; |
1251 |
> |
int n; |
1252 |
> |
{ |
1253 |
> |
double db; |
1254 |
> |
unsigned int e0,e1,e2; |
1255 |
> |
BCOORD a,b,c; |
1256 |
> |
double p0[2], p1[2],cp; |
1257 |
> |
char al,ah,bl,bh,cl,ch; |
1258 |
> |
char testl,testh,test_t0t1,test_t1t2,test_t2t0; |
1259 |
> |
unsigned int ls0,ls1,ls2; |
1260 |
|
|
1261 |
< |
/* Project the origin onto the root node plane */ |
1262 |
< |
t[0] = t[1] = t[2] = 0; |
1261 |
> |
/* May have gotten passed trivial reject if one/two vertices are ON */ |
1262 |
> |
a = q1[0];b= q0[1]; c= q0[2]; |
1263 |
> |
SIDES_LESS(t0,t1,t2,ls0,ls1,ls2,a,b,c); |
1264 |
> |
|
1265 |
> |
/* First check if can trivial accept: if vertex in cell */ |
1266 |
> |
if(ls0 & ls1 & ls2) |
1267 |
> |
goto Lfunc_call; |
1268 |
|
|
1269 |
< |
VADD(v,orig,dir); |
1270 |
< |
/* Find the intersection point of the origin */ |
1271 |
< |
/* map to 2d by dropping maximum magnitude component of normal */ |
1272 |
< |
x = FP_X(peq); |
791 |
< |
y = FP_Y(peq); |
792 |
< |
z = FP_Z(peq); |
1269 |
> |
if(ls0==0 || ls1 == 0 || ls2 ==0) |
1270 |
> |
return; |
1271 |
> |
/* Assumption: Could not trivial reject*/ |
1272 |
> |
/* IF any coords lie on edge- must be in if couldnt reject */ |
1273 |
|
|
1274 |
< |
/* Calculate barycentric coordinates for current vertex */ |
1275 |
< |
intersect_vector_plane(orig,peq,&(et[0]),i_pt); |
1276 |
< |
bary2d(q0[x],q0[y],q1[x],q1[y],q2[x],q2[y],i_pt[x],i_pt[y],b[0]); |
1274 |
> |
if(t0[0]== a || t0[1] == b || t0[2] == c) |
1275 |
> |
goto Lfunc_call; |
1276 |
> |
if(t1[0]== a || t1[1] == b || t1[2] == c) |
1277 |
> |
goto Lfunc_call; |
1278 |
> |
if(t2[0]== a || t2[1] == b || t2[2] == c) |
1279 |
> |
goto Lfunc_call; |
1280 |
|
|
1281 |
< |
intersect_vector_plane(v,peq,&(et[1]),i_pt); |
1282 |
< |
bary2d(q0[x],q0[y],q1[x],q1[y],q2[x],q2[y],i_pt[x],i_pt[y],b[1]); |
1283 |
< |
if(et[1] < 0.0) |
1284 |
< |
VSUB(db,b[0],b[1]); |
1281 |
> |
/* Test for edge crossings */ |
1282 |
> |
/* Test t0t1 against a,b,c */ |
1283 |
> |
/* First test if t0t1 can be trivially rejected */ |
1284 |
> |
/* If both edges are outside bounds- dont need to test */ |
1285 |
> |
|
1286 |
> |
/* Test t0t1,t1t2,t2t0 against a */ |
1287 |
> |
test_t0t1 = !(((ls0 & 6)==0) || ((ls1 & 6)==0)|| ((ls2 & 6)==0) || |
1288 |
> |
((sq0 & 6)==0) ||((sq1 & 6)==0)|| ((sq2 & 6)==0)); |
1289 |
> |
e0 = (ls0 ^ ((ls0 >> 1) | (ls0 << 2 & 4))); |
1290 |
> |
bl=bh=0; |
1291 |
> |
/* Test t0t1,t1t2,t2t0 against a */ |
1292 |
> |
if(test_t0t1 && (e0 & 2) ) |
1293 |
> |
{ |
1294 |
> |
db = t0[1] + dt10[1]*((double)(a-t0[0])/dt10[0]); |
1295 |
> |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
1296 |
> |
} |
1297 |
> |
test_t1t2= !(((ls0 & 3)==0) || ((ls1 & 3)==0)|| ((ls2 & 3)==0) || |
1298 |
> |
((sq0 & 3)==0) ||((sq1 & 3)==0)|| ((sq2 & 3)==0)); |
1299 |
> |
if(test_t1t2 && (e0 & 1)) |
1300 |
> |
{ /* test t1t2 against a */ |
1301 |
> |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
1302 |
> |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
1303 |
> |
} |
1304 |
> |
test_t2t0 = !(((ls0 & 5)==0) || ((ls1 & 5)==0)|| ((ls2 & 5)==0) || |
1305 |
> |
((sq0 & 5)==0) ||((sq1 & 5)==0)|| ((sq2 & 5)==0)); |
1306 |
> |
if(test_t2t0 && (e0 & 4)) |
1307 |
> |
{ |
1308 |
> |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
1309 |
> |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
1310 |
> |
} |
1311 |
> |
cl = ch = 0; |
1312 |
> |
e1 = (ls1 ^ ((ls1 >> 1) | (ls1 << 2 & 4))); |
1313 |
> |
if(test_t0t1 && (e1 & 2)) |
1314 |
> |
{/* test t0t1 against b */ |
1315 |
> |
db = t0[2] + dt10[2]*(((double)(b-t0[1]))/dt10[1]); |
1316 |
> |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
1317 |
> |
} |
1318 |
> |
if(test_t1t2 && (e1 & 1)) |
1319 |
> |
{/* test t1t2 against b */ |
1320 |
> |
db = t1[2] + dt21[2]*((double)(b - t1[1]))/dt21[1]; |
1321 |
> |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
1322 |
> |
} |
1323 |
> |
if(test_t2t0 && (e1 & 4)) |
1324 |
> |
{/* test t2t0 against b */ |
1325 |
> |
db = t2[2] + dt02[2]*((double)(b - t2[1]))/dt02[1]; |
1326 |
> |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
1327 |
> |
} |
1328 |
> |
al = ah = 0; |
1329 |
> |
e2 = (ls2 ^ ((ls2 >> 1) | (ls2 << 2 & 4))); |
1330 |
> |
if(test_t0t1 && (e2 & 2)) |
1331 |
> |
{ /* test t0t1 against c */ |
1332 |
> |
db = t0[0] + dt10[0]*(((double)(c-t0[2]))/dt10[2]); |
1333 |
> |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
1334 |
> |
} |
1335 |
> |
if(test_t1t2 && (e2 & 1)) |
1336 |
> |
{ |
1337 |
> |
db = t1[0] + dt21[0]*((double)(c - t1[2]))/dt21[2]; |
1338 |
> |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
1339 |
> |
} |
1340 |
> |
if(test_t2t0 && (e2 & 4)) |
1341 |
> |
{ /* test t2t0 against c */ |
1342 |
> |
db = t2[0] + dt02[0]*((double)(c - t2[2]))/dt02[2]; |
1343 |
> |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
1344 |
> |
} |
1345 |
> |
/* Only remaining case is if some edge trivially rejected */ |
1346 |
> |
if(!e0 || !e1 || !e2) |
1347 |
> |
return; |
1348 |
> |
|
1349 |
> |
/* Only one/none got tested - pick either of other two/any two */ |
1350 |
> |
/* Only need to test one edge */ |
1351 |
> |
if(!test_t0t1 && (e0 & 2)) |
1352 |
> |
{ |
1353 |
> |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
1354 |
> |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
1355 |
> |
} |
1356 |
> |
if(!test_t1t2 && (e0 & 1)) |
1357 |
> |
{/* test t1t2 against a */ |
1358 |
> |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
1359 |
> |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
1360 |
> |
} |
1361 |
> |
if(!test_t2t0 && (e0 & 4)) |
1362 |
> |
{ |
1363 |
> |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
1364 |
> |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
1365 |
> |
} |
1366 |
> |
|
1367 |
> |
return; |
1368 |
> |
|
1369 |
> |
Lfunc_call: |
1370 |
> |
f.func(f.argptr,root,qt,n); |
1371 |
> |
if(!QT_IS_EMPTY(qt)) |
1372 |
> |
QT_LEAF_SET_FLAG(qt); |
1373 |
> |
} |
1374 |
> |
|
1375 |
> |
|
1376 |
> |
QUADTREE |
1377 |
> |
qtInsert_point(root,qt,parent,q0,q1,q2,bc,scale,f,n,doneptr) |
1378 |
> |
int root; |
1379 |
> |
QUADTREE qt,parent; |
1380 |
> |
BCOORD q0[3],q1[3],q2[3],bc[3],scale; |
1381 |
> |
FUNC f; |
1382 |
> |
int n,*doneptr; |
1383 |
> |
{ |
1384 |
> |
BCOORD a,b,c; |
1385 |
> |
BCOORD va[3],vb[3],vc[3]; |
1386 |
> |
|
1387 |
> |
if(QT_IS_TREE(qt)) |
1388 |
> |
{ |
1389 |
> |
a = q1[0] + scale; |
1390 |
> |
b = q0[1] + scale; |
1391 |
> |
c = q0[2] + scale; |
1392 |
> |
if(bc[0] > a) |
1393 |
> |
{ |
1394 |
> |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
1395 |
> |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
1396 |
> |
QT_NTH_CHILD(qt,0) = qtInsert_point(root,QT_NTH_CHILD(qt,0), |
1397 |
> |
qt,q0,vc,vb,bc,scale>>1,f,n+1,doneptr); |
1398 |
> |
if(!*doneptr) |
1399 |
> |
{ |
1400 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
1401 |
> |
if(!*doneptr) |
1402 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
1403 |
> |
if(!*doneptr) |
1404 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
1405 |
> |
} |
1406 |
> |
return(qt); |
1407 |
> |
} |
1408 |
> |
if(bc[1] > b) |
1409 |
> |
{ |
1410 |
> |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
1411 |
> |
va[0] = q1[0]; va[1] = b; va[2] = c; |
1412 |
> |
QT_NTH_CHILD(qt,1) =qtInsert_point(root,QT_NTH_CHILD(qt,1), |
1413 |
> |
qt,vc,q1,va,bc,scale >>1,f,n+1,doneptr); |
1414 |
> |
if(!*doneptr) |
1415 |
> |
{ |
1416 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
1417 |
> |
if(!*doneptr) |
1418 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
1419 |
> |
if(!*doneptr) |
1420 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
1421 |
> |
} |
1422 |
> |
return(qt); |
1423 |
> |
} |
1424 |
> |
if(bc[2] > c) |
1425 |
> |
{ |
1426 |
> |
va[0] = q1[0]; va[1] = b; va[2] = c; |
1427 |
> |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
1428 |
> |
QT_NTH_CHILD(qt,2) = qtInsert_point(root,QT_NTH_CHILD(qt,2), |
1429 |
> |
qt,vb,va,q2,bc,scale>>1,f,n+1,doneptr); |
1430 |
> |
if(!*doneptr) |
1431 |
> |
{ |
1432 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
1433 |
> |
if(!*doneptr) |
1434 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
1435 |
> |
if(!*doneptr) |
1436 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
1437 |
> |
} |
1438 |
> |
return(qt); |
1439 |
> |
} |
1440 |
> |
else |
1441 |
> |
{ |
1442 |
> |
va[0] = q1[0]; va[1] = b; va[2] = c; |
1443 |
> |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
1444 |
> |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
1445 |
> |
QT_NTH_CHILD(qt,3) = qtInsert_point_rev(root,QT_NTH_CHILD(qt,3), |
1446 |
> |
qt,va,vb,vc,bc,scale>>1,f,n+1,doneptr); |
1447 |
> |
if(!*doneptr) |
1448 |
> |
{ |
1449 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
1450 |
> |
if(!*doneptr) |
1451 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
1452 |
> |
if(!*doneptr) |
1453 |
> |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
1454 |
> |
} |
1455 |
> |
return(qt); |
1456 |
> |
} |
1457 |
> |
} |
1458 |
|
else |
803 |
– |
VSUB(db,b[1],b[0]); |
804 |
– |
t[0] = HUGET; |
805 |
– |
convert_dtol(b[0],bi); |
806 |
– |
if(et[1]<0.0 ||(fabs(b[1][0])>(FTINY+1.0))||(fabs(b[1][1])>(FTINY+1.0)) || |
807 |
– |
(fabs(b[1][2])>(FTINY+1.0))||(b[1][0] <-FTINY) || |
808 |
– |
(b[1][1]<-FTINY) ||(b[1][2]<-FTINY)) |
809 |
– |
{ |
810 |
– |
max_index(db,&d); |
811 |
– |
for(i=0; i< 3; i++) |
812 |
– |
dbi[0][i] = (BDIR)(db[i]/d*MAXBDIR); |
813 |
– |
} |
814 |
– |
else |
815 |
– |
for(i=0; i< 3; i++) |
816 |
– |
dbi[0][i] = (BDIR)(db[i]*MAXBDIR); |
817 |
– |
w=0; |
818 |
– |
/* trace the ray starting with this node */ |
819 |
– |
qt = qtVisit_tri_edges(qt,bi,dbi[0][0],dbi[0][1],dbi[0][2], dbi,&w, |
820 |
– |
nextptr,t,0,0,func,f,argptr); |
821 |
– |
if(!QT_FLAG_IS_DONE(*f)) |
1459 |
|
{ |
1460 |
< |
br[0] = (double)bi[0]/(double)MAXBCOORD; |
1461 |
< |
br[1] = (double)bi[1]/(double)MAXBCOORD; |
825 |
< |
br[2] = (double)bi[2]/(double)MAXBCOORD; |
826 |
< |
orig[x] = br[0]*q0[x] + br[1]*q1[x] + br[2]*q2[x]; |
827 |
< |
orig[y] = br[0]*q0[y] + br[1]*q1[y] + br[2]*q2[y]; |
828 |
< |
orig[z]=(-FP_N(peq)[x]*orig[x] - |
829 |
< |
FP_N(peq)[y]*orig[y]-FP_D(peq))/FP_N(peq)[z]; |
1460 |
> |
qt = f.func(f.argptr,root,qt,parent,q0,q1,q2,bc,scale,0,f,n,doneptr); |
1461 |
> |
return(qt); |
1462 |
|
} |
831 |
– |
return(qt); |
832 |
– |
|
1463 |
|
} |
1464 |
|
|
1465 |
|
|
1466 |
+ |
QUADTREE |
1467 |
+ |
qtInsert_point_rev(root,qt,parent,q0,q1,q2,bc,scale,f,n,doneptr) |
1468 |
+ |
int root; |
1469 |
+ |
QUADTREE qt,parent; |
1470 |
+ |
BCOORD q0[3],q1[3],q2[3],bc[3]; |
1471 |
+ |
BCOORD scale; |
1472 |
+ |
FUNC f; |
1473 |
+ |
int n,*doneptr; |
1474 |
+ |
{ |
1475 |
+ |
BCOORD a,b,c; |
1476 |
+ |
BCOORD va[3],vb[3],vc[3]; |
1477 |
+ |
|
1478 |
+ |
if(QT_IS_TREE(qt)) |
1479 |
+ |
{ |
1480 |
+ |
a = q1[0] - scale; |
1481 |
+ |
b = q0[1] - scale; |
1482 |
+ |
c = q0[2] - scale; |
1483 |
+ |
if(bc[0] < a) |
1484 |
+ |
{ |
1485 |
+ |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
1486 |
+ |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
1487 |
+ |
QT_NTH_CHILD(qt,0) = qtInsert_point_rev(root,QT_NTH_CHILD(qt,0), |
1488 |
+ |
qt,q0,vc,vb,bc,scale>>1,f,n+1,doneptr); |
1489 |
+ |
if(!*doneptr) |
1490 |
+ |
{ |
1491 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
1492 |
+ |
if(!*doneptr) |
1493 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
1494 |
+ |
if(!*doneptr) |
1495 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
1496 |
+ |
} |
1497 |
+ |
return(qt); |
1498 |
+ |
} |
1499 |
+ |
if(bc[1] < b) |
1500 |
+ |
{ |
1501 |
+ |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
1502 |
+ |
va[0] = q1[0]; va[1] = b; va[2] = c; |
1503 |
+ |
QT_NTH_CHILD(qt,1) = qtInsert_point_rev(root,QT_NTH_CHILD(qt,1), |
1504 |
+ |
qt,vc,q1,va,bc,scale>>1,f,n+1,doneptr); |
1505 |
+ |
if(!*doneptr) |
1506 |
+ |
{ |
1507 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
1508 |
+ |
if(!*doneptr) |
1509 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
1510 |
+ |
if(!*doneptr) |
1511 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
1512 |
+ |
} |
1513 |
+ |
return(qt); |
1514 |
+ |
} |
1515 |
+ |
if(bc[2] < c) |
1516 |
+ |
{ |
1517 |
+ |
va[0] = q1[0]; va[1] = b; va[2] = c; |
1518 |
+ |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
1519 |
+ |
QT_NTH_CHILD(qt,2) = qtInsert_point_rev(root,QT_NTH_CHILD(qt,2), |
1520 |
+ |
qt,vb,va,q2,bc,scale>>1,f,n+1,doneptr); |
1521 |
+ |
if(!*doneptr) |
1522 |
+ |
{ |
1523 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
1524 |
+ |
if(!*doneptr) |
1525 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
1526 |
+ |
if(!*doneptr) |
1527 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
1528 |
+ |
} |
1529 |
+ |
return(qt); |
1530 |
+ |
} |
1531 |
+ |
else |
1532 |
+ |
{ |
1533 |
+ |
va[0] = q1[0]; va[1] = b; va[2] = c; |
1534 |
+ |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
1535 |
+ |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
1536 |
+ |
QT_NTH_CHILD(qt,3) = qtInsert_point(root,QT_NTH_CHILD(qt,3), |
1537 |
+ |
qt,va,vb,vc,bc,scale>>1,f,n+1,doneptr); |
1538 |
+ |
if(!*doneptr) |
1539 |
+ |
{ |
1540 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
1541 |
+ |
if(!*doneptr) |
1542 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
1543 |
+ |
if(!*doneptr) |
1544 |
+ |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
1545 |
+ |
} |
1546 |
+ |
return(qt); |
1547 |
+ |
} |
1548 |
+ |
} |
1549 |
+ |
else |
1550 |
+ |
{ |
1551 |
+ |
qt = f.func(f.argptr,root,qt,parent,q0,q1,q2,bc,scale,1,f,n,doneptr); |
1552 |
+ |
return(qt); |
1553 |
+ |
} |
1554 |
+ |
} |
1555 |
|
|
1556 |
|
|
1557 |
|
|