stl.tar.gz_STL_STL opengl_STL文件_stl 分块_点云数据

#include"etu.h" List * list_node_create (void) { List *node = (List *) malloc (LEN); if (NULL == node) { printf ("Creating list node failed\n"); return NULL; } node->next = NULL; return node; } Face * List_node_create (void) { Face *node = (Face *) malloc (LE); if (NULL == node) { printf ("Creating list node failed\n"); return NULL; } node->next = NULL; return node; } Linkpoint * linkpoint_create (void) { Linkpoint *list = (Linkpoint *) malloc (sizeof (Linkpoint)); if (list == NULL) { printf ("Creating list failed\n"); exit (-1); } list->length = 0; list->head = NULL; list->tail = NULL; return list; } Linkface * linkface_create(void) { Linkface *list = (Linkface *) malloc (sizeof (Linkface)); if ( list == NULL) { printf ("Creating list failed\n"); exit (-1); } list->Length = 0; list->Head = NULL; list->Tail = NULL; return list; } List * list_insert(Linkpoint * list, List * node) { if (0 == list->length) { list->head = node; list->tail = node; } else { list->tail->next = node; list->tail = node; } list->length += 1; return list->tail; } void List_insert(Linkface * list, Face * node) { if (0 == list->Length) { list->Head = node; list->Tail = node; } else { list->Tail->next = node; list->Tail = node; } list->Length += 1; } List* dis(List *q2,List *q1) { double d; while(q1) { d = sqrt(pow((q2->x - q1->x),2) + pow((q2->y - q1->y),2) + pow((q2->z - q1->z),2)); if(d<1e-6) return q1; else q1 = q1->next; } return NULL; } FILE* read_point_face(FILE *fp,List *point_node,Linkpoint *Li,Linkface *LI) { List *q1; int k=0; Face *face_node=List_node_create(); while(!feof(fp)) { if('x'==fgetc(fp)) { fscanf(fp,"%lf %lf %lf",&point_node->x,&point_node->y,&point_node->z); q1 = dis(point_node,Li->head); if(q1==NULL){ face_node->q[k] = list_insert (Li,point_node); k++; } else { face_node->q[k] = q1; k++; } point_node = list_node_create(); if(k==3) { List_insert(LI,face_node); face_node = List_node_create(); k=0; } } } return fp; } FILE* printpoint ( Linkpoint *Li,FILE *fp) { Li->tail=Li->head; while(Li->tail->next != NULL) { fprintf(fp,"%lf %lf %lf\n",Li->tail->x,Li->tail->y,Li->tail->z); Li->tail = Li->tail->next; } return fp; } FILE* printface(Linkface *LI,FILE* fp) { LI->Tail=LI->Head; while(LI->Tail->next!=NULL) { fprintf(fp,"%lf %lf %lf\n",LI->Tail->q[0]->x,LI->Tail->q[0]->y,LI->Tail->q[0]->z); fprintf(fp,"%lf %lf %lf\n",LI->Tail->q[1]->x,LI->Tail->q[1]->y,LI->Tail->q[1]->z); fprintf(fp,"%lf %lf %lf\n",LI->Tail->q[2]->x,LI->Tail->q[2]->y,LI->Tail->q[2]->z); LI->Tail = LI->Tail->next; } return fp; }