From 063f2e5464f1e0e7cc2766b2cd94b8ca8c242a3d Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@fe.uni-lj.si>
Date: Tue, 24 Feb 2015 15:27:14 +0000
Subject: [PATCH] Added description of a single function in vertex.c
---
src/vertex.c | 38 +++++++++++++++++++++++++++++++-------
1 files changed, 31 insertions(+), 7 deletions(-)
diff --git a/src/vertex.c b/src/vertex.c
index 466c064..3ae9fd1 100644
--- a/src/vertex.c
+++ b/src/vertex.c
@@ -6,6 +6,14 @@
#include "bond.h"
#include<stdio.h>
+ts_bool vertex_list_assign_id(ts_vertex_list *vlist, ts_uint id){
+ ts_uint i;
+ for(i=0;i<vlist->n;i++){
+ vlist->vtx[i]->id = id;
+ }
+ return TS_SUCCESS;
+}
+
ts_vertex_list *init_vertex_list(ts_uint N){
ts_int i;
ts_vertex_list *vlist=(ts_vertex_list *)malloc(sizeof(ts_vertex_list));
@@ -74,23 +82,23 @@
/* remove it from the list while shifting remaining neighbours up */
ts_uint i,j=0;
for(i=0;i<vtx->neigh_no;i++){
+// fprintf(stderr,"neigh_addr=%ld\n", (long)vtx->neigh[i]);
if(vtx->neigh[i]!=nvtx){
vtx->neigh[j]=vtx->neigh[i];
j++;
}
}
- if(j==0) {
- fatal("vtx_remove_neighbour: Error, vertices are not neighbours", 100);
- }
+// fprintf(stderr,"remove_neighbour: vtx1_addr=%ld, vtx2_addr=%ld\n",(long)vtx,(long)nvtx);
/* resize memory. potentionally time consuming */
vtx->neigh_no--;
vtx->neigh=(ts_vertex **)realloc(vtx->neigh,vtx->neigh_no*sizeof(ts_vertex *));
if(vtx->neigh == NULL && vtx->neigh_no!=0)
- fatal("Reallocation of memory failed during removal of vertex neighbour in vtx_remove_neighbour",100);
-
+ fatal("(1) Reallocation of memory failed during removal of vertex neighbour in vtx_remove_neighbour",100);
+//fprintf(stderr,"first alloc");
/* repeat for the neighbour */
/* find a neighbour */
/* remove it from the list while shifting remaining neighbours up */
+ j=0;
for(i=0;i<nvtx->neigh_no;i++){
if(nvtx->neigh[i]!=vtx){
nvtx->neigh[j]=nvtx->neigh[i];
@@ -98,10 +106,12 @@
}
}
/* resize memory. potentionally time consuming. */
+// fprintf(stderr,"Neigbours=%d\n",nvtx->neigh_no);
nvtx->neigh_no--;
- nvtx->neigh=(ts_vertex **)realloc(nvtx->neigh,nvtx->neigh_no*sizeof(ts_vertex *));
+ nvtx->neigh=(ts_vertex **)realloc(nvtx->neigh,nvtx->neigh_no*sizeof(ts_vertex *));
+// fprintf(stderr,"Neigbours=%d\n",nvtx->neigh_no);
if(nvtx->neigh == NULL && nvtx->neigh_no!=0)
- fatal("Reallocation of memory failed during removal of vertex neighbour in vtx_remove_neighbour",100);
+ fatal("(2) Reallocation of memory failed during removal of vertex neighbour in vtx_remove_neighbour",100);
return TS_SUCCESS;
}
@@ -128,6 +138,7 @@
ts_bool vtx_add_cneighbour(ts_bond_list *blist, ts_vertex *vtx1, ts_vertex *vtx2){
ts_bool retval;
retval=vtx_add_neighbour(vtx1,vtx2);
+ // retval=vtx_add_neighbour(vtx2,vtx1);
if(retval==TS_SUCCESS)
retval=vtx_add_bond(blist,vtx1,vtx2);
return retval;
@@ -188,6 +199,19 @@
return TS_SUCCESS;
}
+/** Calculates the triple product of vectors defined by vertices vtx1, vtx2 and vtx3, ($\mathrm{vtx}_1\cdot(\mathrm{vtx}_2\cross\mathrm{vtx}_3$):
+ * \begin{vmatrix}
+ * x_1 & y_1 & z_1 \\
+ * x_2-x_1 & y_2-y_1 & z_2-z_1\\
+ * x_3-x_1 & y_3-y_1 & z_3-z_1\\
+ * \end{vmatrix}
+ * where the vertices coordinates are denoted by corresponding vertex index number. Function is used to determine the orientation of area formed by triangle formed by the three given vertices.
+ *
+ * @param vtx1 is first vertex, according to which the orientation is calculated
+ * @param vtx2 is the second vertex
+ * @param vtx3 is the third vertex
+ * @returns directionality of the area of the triangle formed by vertices vtx1, vtx2 and vtx3. It is positive if vtx1, vtx2 and vtx3 are oriented counter-clockwise.
+*/
inline ts_double vtx_direct(ts_vertex *vtx1, ts_vertex *vtx2, ts_vertex *vtx3){
ts_double dX2=vtx2->x-vtx1->x;
ts_double dY2=vtx2->y-vtx1->y;
--
Gitblit v1.9.3