From 17fe35ccc428e18dd226e07d5517c4816ef6be44 Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@gmail.com>
Date: Mon, 19 Apr 2021 12:23:07 +0000
Subject: [PATCH] Work done previously

---
 src/bond.c |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/src/bond.c b/src/bond.c
index af39532..c30c488 100644
--- a/src/bond.c
+++ b/src/bond.c
@@ -1,3 +1,4 @@
+/* vim: set ts=4 sts=4 sw=4 noet : */
 #include<stdlib.h>
 #include "general.h"
 #include "vertex.h"
@@ -29,11 +30,36 @@
 	blist->bond[blist->n - 1]->vtx1=vtx1;	
 	blist->bond[blist->n - 1]->vtx2=vtx2;
 	blist->bond[blist->n - 1]->tainted=0;
+	blist->bond[blist->n - 1]->idx=blist->n-1;
     //Should we calculate bond length NOW?
 	
 	return blist->bond[blist->n-1];
 }
 
+
+ts_bool bond_vector(ts_bond *bond){
+	
+	bond->x = bond->vtx1->x - bond->vtx2->x;
+	bond->y = bond->vtx1->y - bond->vtx2->y;
+	bond->z = bond->vtx1->z - bond->vtx2->z;
+
+	return TS_SUCCESS;	
+}
+
+
+ts_bool bond_get_edge_vector(ts_double *vector, ts_bond *bond, ts_vertex *vtx){
+	if(vtx==bond->vtx2){
+		vector[0]=bond->x;
+		vector[1]=bond->y;
+		vector[2]=bond->z;
+	} else {
+		vector[0]=-bond->x;
+		vector[1]=-bond->y;
+		vector[2]=-bond->z;
+	}
+	return TS_SUCCESS;
+}
+
 ts_bool bond_list_free(ts_bond_list *blist){
     ts_uint i;
     for(i=0;i<blist->n;i++){

--
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