From a2a67644115039486dc07aa4d9d636267f99b22a Mon Sep 17 00:00:00 2001
From: Samo Penic <samo@andromeda>
Date: Sun, 28 Nov 2010 19:55:35 +0000
Subject: [PATCH] triangles added to the data structure.
---
src/triangle.c | 180 +++++++++++++++++++++++++++++------------------------------
1 files changed, 88 insertions(+), 92 deletions(-)
diff --git a/src/triangle.c b/src/triangle.c
index d24665e..79a0ada 100644
--- a/src/triangle.c
+++ b/src/triangle.c
@@ -4,115 +4,108 @@
#include "triangle.h"
#include<math.h>
-ts_bool init_triangle_list(ts_triangle_list *tlist){
+ts_triangle_list *init_triangle_list(){
+ ts_triangle_list *tlist=(ts_triangle_list *)malloc(sizeof(ts_triangle_list));
tlist->n = 0;
- tlist->triangle=NULL;
- return TS_SUCCESS;
+ tlist->tria=NULL;
+ return tlist;
}
-ts_bool clear_triangle_values(ts_triangle *triang,ts_uint idx){
- triang->idx=idx;
- triang->neigh_no=0;
- triang->vertex[0]=NULL;
- triang->vertex[1]=NULL;
- triang->vertex[2]=NULL;
- triang->neigh=NULL;
- triang->xnorm=0;
- triang->ynorm=0;
- triang->znorm=0;
- return TS_SUCCESS;
-}
-ts_bool triangle_add(ts_triangle_list *tlist, ts_vertex *vtx1, ts_vertex *vtx2, ts_vertex *vtx3){
+ts_triangle *triangle_add(ts_triangle_list *tlist, ts_vertex *vtx1, ts_vertex *vtx2, ts_vertex *vtx3){
+ if(vtx1==NULL || vtx2==NULL || vtx3==NULL){
+ return NULL;
+ }
tlist->n++;
- tlist->triangle=realloc(tlist->triangle,tlist->n*sizeof(ts_triangle));
- if(tlist->triangle==NULL) fatal("Cannot reallocate memory for additional ts_triangle.",5);
- clear_triangle_values(&tlist->triangle[tlist->n-1],tlist->n-1);
+ tlist->tria=(ts_triangle **)realloc(tlist->tria,tlist->n*sizeof(ts_triangle *));
+ if(tlist->tria==NULL) fatal("Cannot reallocate memory for additional ts_triangle.",5);
+
+ tlist->tria[tlist->n-1]=(ts_triangle *)calloc(1,sizeof(ts_triangle));
+ if(tlist->tria[tlist->n-1]==NULL) fatal("Cannot reallocate memory for additional ts_triangle.",5);
+ tlist->tria[tlist->n-1]->data=(ts_triangle_data *)calloc(1,sizeof(ts_triangle_data));
+
//NOW insert vertices!
- tlist->triangle[tlist->n - 1].idx=tlist->n;
- tlist->triangle[tlist->n - 1].vertex[0]=vtx1;
- tlist->triangle[tlist->n - 1].vertex[1]=vtx2;
- tlist->triangle[tlist->n - 1].vertex[2]=vtx3;
- return TS_SUCCESS;
+ tlist->tria[tlist->n - 1]->idx=tlist->n-1;
+ tlist->tria[tlist->n - 1]->data->vertex[0]=vtx1;
+ tlist->tria[tlist->n - 1]->data->vertex[1]=vtx2;
+ tlist->tria[tlist->n - 1]->data->vertex[2]=vtx3;
+ return tlist->tria[tlist->n-1];
}
ts_bool triangle_add_neighbour(ts_triangle *tria, ts_triangle *ntria){
- // int i;
- //fprintf(stderr,"Sosedi so:\n");
- // for(i=0;i<tria->neigh_no;i++)
- // fprintf(stderr,"\t %d\n",tria->neigh[i]);
-
-
- tria->neigh_no++;
- //We need to reallocate space! The pointer *neight must be zero if not
- //having neighbours yet (if neigh_no was 0 at thime of calling
- tria->neigh=realloc(tria->neigh,tria->neigh_no*sizeof(ts_triangle *));
- if(tria->neigh == NULL){
+ if(tria==NULL || ntria==NULL) return TS_FAIL;
+/*TODO: check if the neighbour already exists! Now there is no such check
+ * because of the performance issue. */
+ tria->data->neigh_no++;
+ tria->data->neigh=realloc(tria->data->neigh,tria->data->neigh_no*sizeof(ts_triangle *));
+ if(tria->data->neigh == NULL)
fatal("Reallocation of memory failed during insertion of triangle neighbour in triangle_add_neighbour",3);
- }
- tria->neigh[tria->neigh_no-1]=ntria;
- // fprintf(stderr,"dodajamo soseda %d!\n",ntria);
-
- //fprintf(stderr,"Sosedi so:\n");
- // for(i=0;i<tria->neigh_no;i++)
- // fprintf(stderr,"\t %d\n",tria->neigh[i]);
-
-
-
+ tria->data->neigh[tria->data->neigh_no-1]=ntria;
+
+/* we repeat the procedure for the neighbour */
+ ntria->data->neigh_no++;
+ ntria->data->neigh=realloc(ntria->data->neigh,ntria->data->neigh_no*sizeof(ts_triangle *));
+ if(ntria->data->neigh == NULL)
+ fatal("Reallocation of memory failed during insertion of triangle neighbour in triangle_add_neighbour",3);
+ ntria->data->neigh[ntria->data->neigh_no-1]=tria;
return TS_SUCCESS;
}
ts_bool triangle_remove_neighbour(ts_triangle *tria, ts_triangle *ntria){
- ts_uint i,j=0;
-/* fprintf(stderr,"Sosedi so:\n");
- for(i=0;i<tria->neigh_no;i++)
- fprintf(stderr,"%d, ",tria->neigh[i]);
- fprintf(stderr,"\n");
- */
-
- for(i=0;i<tria->neigh_no;i++){
- if(tria->neigh[i]!=ntria){
- tria->neigh[j]=tria->neigh[i];
+ ts_uint i,j=0;
+ if(tria==NULL || ntria==NULL) return TS_FAIL;
+
+ for(i=0;i<tria->data->neigh_no;i++){
+ if(tria->data->neigh[i]!=ntria){
+ tria->data->neigh[j]=tria->data->neigh[i];
j++;
-
}
- // else {
- // fprintf(stderr,"was here once\n");
-
- // }
}
-
- // fprintf(stderr,"Sosedi so:\n");
- // for(i=0;i<tria->neigh_no;i++)
- // fprintf(stderr,"\t %d\n",tria->neigh[i]);
-
-// fprintf(stderr,"iscemo soseda %d!\n",ntria);
- if(j==i) fatal("In triangle_remove_neighbour: Specified neighbour does not exist for given triangle",3);
- // fprintf(stderr,"old nuber of neigh=%i\n",tria->neigh_no);
- tria->neigh_no--;
- // fprintf(stderr,"new nuber of neigh=%i\n",tria->neigh_no);
- tria->neigh=realloc(tria->neigh,tria->neigh_no*sizeof(ts_triangle *));
- if(tria->neigh == NULL){
- fatal("Reallocation of memory failed during insertion of vertex neighbour in triangle_remove_neighbour",3);
- }
+ if(j==i) {
+ return TS_FAIL;
+ //fatal("In triangle_remove_neighbour: Specified neighbour does not exist for given triangle",3);
+ }
+ tria->data->neigh_no--;
+ tria->data->neigh=(ts_triangle **)realloc(tria->data->neigh,tria->data->neigh_no*sizeof(ts_triangle *));
+ if(tria->data->neigh == NULL){
+ fatal("Reallocation of memory failed during removal of vertex neighbour in triangle_remove_neighbour",100);
+ }
+/* we repeat the procedure for neighbour */
+ for(i=0;i<ntria->data->neigh_no;i++){
+ if(ntria->data->neigh[i]!=tria){
+ ntria->data->neigh[j]=ntria->data->neigh[i];
+ j++;
+ }
+ }
+ if(j==i) {
+ return TS_FAIL;
+ //fatal("In triangle_remove_neighbour: Specified neighbour does not exist for given triangle",3);
+ }
+ ntria->data->neigh_no--;
+ ntria->data->neigh=(ts_triangle **)realloc(ntria->data->neigh,ntria->data->neigh_no*sizeof(ts_triangle *));
+ if(ntria->data->neigh == NULL){
+ fatal("Reallocation of memory failed during removal of vertex neighbour in triangle_remove_neighbour",100);
+ }
return TS_SUCCESS;
}
ts_bool triangle_normal_vector(ts_triangle *tria){
ts_double x21,x31,y21,y31,z21,z31,xden;
- x21=tria->vertex[1]->x - tria->vertex[0]->x;
- x31=tria->vertex[2]->x - tria->vertex[0]->x;
- y21=tria->vertex[1]->y - tria->vertex[0]->y;
- y31=tria->vertex[2]->y - tria->vertex[0]->y;
- z21=tria->vertex[1]->z - tria->vertex[0]->z;
- z31=tria->vertex[2]->z - tria->vertex[0]->z;
+ x21=tria->data->vertex[1]->data->x - tria->data->vertex[0]->data->x;
+ x31=tria->data->vertex[2]->data->x - tria->data->vertex[0]->data->x;
+ y21=tria->data->vertex[1]->data->y - tria->data->vertex[0]->data->y;
+ y31=tria->data->vertex[2]->data->y - tria->data->vertex[0]->data->y;
+ z21=tria->data->vertex[1]->data->z - tria->data->vertex[0]->data->z;
+ z31=tria->data->vertex[2]->data->z - tria->data->vertex[0]->data->z;
- tria->xnorm=y21*z31 - z21*y31;
- tria->ynorm=z21*x31 - x21*z31;
- tria->znorm=x21*y31 - y21*x31;
- xden=tria->xnorm*tria->xnorm + tria->ynorm*tria->ynorm + tria->znorm*tria->znorm;
+ tria->data->xnorm=y21*z31 - z21*y31;
+ tria->data->ynorm=z21*x31 - x21*z31;
+ tria->data->znorm=x21*y31 - y21*x31;
+ xden=tria->data->xnorm*tria->data->xnorm +
+ tria->data->ynorm*tria->data->ynorm +
+ tria->data->znorm*tria->data->znorm;
#ifdef TS_DOUBLE_DOUBLE
xden=sqrt(xden);
#endif
@@ -122,24 +115,27 @@
#ifdef TS_DOUBLE_LONGDOUBLE
xden=sqrtl(xden);
#endif
- tria->xnorm=tria->xnorm/xden;
- tria->ynorm=tria->ynorm/xden;
- tria->znorm=tria->znorm/xden;
+ tria->data->xnorm=tria->data->xnorm/xden;
+ tria->data->ynorm=tria->data->ynorm/xden;
+ tria->data->znorm=tria->data->znorm/xden;
return TS_SUCCESS;
}
-ts_bool triangle_free(ts_triangle *triang){
- free(triang->neigh);
+ts_bool triangle_data_free(ts_triangle_data *data){
+ if(data->neigh!=NULL) free(data->neigh);
+ free(data);
return TS_SUCCESS;
}
ts_bool triangle_list_free(ts_triangle_list *tlist){
- int i;
+ ts_uint i;
for(i=0;i<tlist->n;i++){
- triangle_free(&tlist->triangle[i]);
+ triangle_data_free(tlist->tria[i]->data);
+ free(tlist->tria[i]);
}
- free(tlist->triangle);
+ free(tlist->tria);
+ free(tlist);
return TS_SUCCESS;
}
--
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