From 719c9febac2eaff9483fda487b57684afbb59bb2 Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@gmail.com>
Date: Wed, 05 Mar 2014 16:47:50 +0000
Subject: [PATCH] dont know

---
 src/bondflip.c |  147 ++++++++++++++++++++----------------------------
 1 files changed, 62 insertions(+), 85 deletions(-)

diff --git a/src/bondflip.c b/src/bondflip.c
index 17a1977..4ceaf2b 100644
--- a/src/bondflip.c
+++ b/src/bondflip.c
@@ -15,10 +15,10 @@
 ts_bool single_bondflip_timestep(ts_vesicle *vesicle, ts_bond *bond, ts_double *rn){
 /*c  Vertex and triangle (lm and lp) indexing for bond flip:
 c      +----- k-------+              +----- k ------+
-c      |lm1 / | \ lp1 |              |lm1 /   \ lp1 |
+c      |lm1 / ^ \ lp1 |              |lm1 /   \ lp1 |
 c      |  /   |   \   |              |  /       \   |
 c      |/     |     \ |     FLIP     |/    lm     \ |
-c     km  lm  | lp   kp    --->      km ---------- kp  
+c     km  lm  | lp   kp    --->      km ---------> kp  
 c      |\     |     / |              |\    lp     / |  
 c      |  \   |   /   |              |  \       /   |
 c      |lm2 \ | / lp2 |              |lm2 \   / lp2 |
@@ -27,50 +27,28 @@
 */
     ts_vertex *it=bond->vtx1;
     ts_vertex *k=bond->vtx2;
-    ts_uint nei,neip,neim;
-    ts_uint i; //j;
+  //  ts_uint nei,neip,neim;
+    ts_uint i;
     ts_double oldenergy, delta_energy;
- //   ts_triangle *lm=NULL,*lp=NULL, *lp1=NULL, *lp2=NULL, *lm1=NULL, *lm2=NULL;
-
-    ts_vertex *kp,*km;
-
-    if(it->neigh->n< 3) return TS_FAIL;
-    if(k->neigh->n< 3) return TS_FAIL;
-    if(k==NULL || it==NULL){
-        fatal("In bondflip, number of neighbours of k or it is less than 3!",999);
-    }
-
-    nei=0;
-    for(i=0;i<it->neigh->n;i++){ // Finds the nn of it, that is k 
-        if(it->neigh->vtx[i]==k){
-            nei=i;
-            break;
-        }
-    }
-    neip=nei+1;  // I don't like it.. Smells like I must have it in correct order
-    neim=nei-1;
-    if(neip>=it->neigh->n) neip=0;
-    if((ts_int)neim<0) neim=it->neigh->n-1; /* casting is essential... If not
-there the neim is never <0 !!! */
-  //  fprintf(stderr,"The numbers are: %u %u\n",neip, neim);
-    km=it->neigh->vtx[neim];  // We located km and kp
-    kp=it->neigh->vtx[neip];
-
-    if(km==NULL || kp==NULL){
-        fatal("In bondflip, cannot determine km and kp!",999);
-    }
-
-  //  fprintf(stderr,"I WAS HERE! after the 4 vertices are known!\n");
+#ifdef DEBUG
+	if(bond->adjvtx[0]==NULL || bond->adjvtx[1]==NULL) fatal ("single_bondflip_timestep: Adjvertex for called bond is null. This should not happen!",999);
+#endif
+    ts_vertex *kp=bond->adjvtx[1],*km=bond->adjvtx[0];
+//	ts_triangle *lm=NULL, *lp=NULL;
 
 /* test if the membrane is wrapped too much, so that kp is nearest neighbour of
  * km. If it is true, then don't flip! */
-    for(i=0;i<km->neigh->n;i++){
+/*TODO: dec2013, i think this never happens!
+      for(i=0;i<km->neigh->n;i++){
         if(km->neigh->vtx[i] == kp) return TS_FAIL;
     }
+*/
+
+
  //   fprintf(stderr,"Membrane didn't wrap too much.. Continue.\n");
 /* if bond would be too long, return... */
-    if(vtx_distance_sq(km,kp) > vesicle->dmax ) return TS_FAIL;
- //   fprintf(stderr,"Bond will not be too long.. Continue.\n");
+    if(vtx_distance_sq(bond->adjvtx[0],bond->adjvtx[1]) > vesicle->dmax ) return TS_FAIL;
+  //  fprintf(stderr,"Bond will not be too long.. Continue.\n");
 
 /* we make a bond flip. this is different than in original fortran */
 // 0. step. Get memory prior the flip
@@ -101,12 +79,13 @@
 
 
 */
-//    fprintf(stderr,"I WAS HERE! Before bondflip!\n");
-    ts_flip_bond(k,it,km,kp, bond);
+ //   fprintf(stderr,"I WAS HERE! Before bondflip!\n");
+    ts_flip_bond(bond);
 //    fprintf(stderr,"I WAS HERE! Bondflip successful!\n");
 
 /* Calculating the new energy */
   delta_energy=0;
+/* TODO: why this neighs are recalculated? Not necessary! */
   for(i=0;i<k->neigh->n;i++) energy_vertex(k->neigh->vtx[i]);
   for(i=0;i<kp->neigh->n;i++) energy_vertex(kp->neigh->vtx[i]);
   for(i=0;i<km->neigh->n;i++) energy_vertex(km->neigh->vtx[i]);
@@ -134,10 +113,10 @@
 #endif
         {
             //not accepted, reverting changes
-       //     fprintf(stderr,"Failed to move, due to MC\n");
+            fprintf(stderr,"Failed to move, due to MC\n");
 
 //            ts_flip_bond(km,kp,it,k, bond);
-            ts_flip_bond(kp,km,k,it, bond);
+            ts_flip_bond(bond);
                 
 
 /*
@@ -163,7 +142,7 @@
             return TS_FAIL;
         }
     }
-        //    fprintf(stderr,"Success\n");
+            fprintf(stderr,"Success\n");
 
 
 /* IF BONDFLIP ACCEPTED, THEN RETURN SUCCESS! */
@@ -171,51 +150,17 @@
 }
 
 
-ts_bool ts_flip_bond(ts_vertex *k,ts_vertex *it,ts_vertex *km, ts_vertex *kp,
-ts_bond *bond){
-
+ts_bool ts_flip_bond(ts_bond *bond){
+fprintf(stderr,"Called!\n");
     ts_triangle *lm=NULL,*lp=NULL, *lp1=NULL, *lm2=NULL;
     ts_uint i,j; //lmidx, lpidx;
-if(k==NULL || it==NULL || km==NULL || kp==NULL){
-    fatal("ts_flip_bond: You called me with invalid pointers to vertices",999);
-}
-// 1. step. We find lm and lp from k->tristar !
-    for(i=0;i<it->tristar_no;i++){
-        for(j=0;j<k->tristar_no;j++){
-            if((it->tristar[i] == k->tristar[j])){ //ce gre za skupen trikotnik
-                if((it->tristar[i]->vertex[0] == km || it->tristar[i]->vertex[1]
-== km || it->tristar[i]->vertex[2]== km )){
-                lm=it->tristar[i];
-         //       lmidx=i;
-                }
-                else
-                {
-                lp=it->tristar[i];
-         //       lpidx=i;
-                }
 
-            }
-        }
-    }
-if(lm==NULL || lp==NULL) fatal("ts_flip_bond: Cannot find triangles lm and lp!",999);
-
-//we look for important triangles lp1 and lm2.
-
- for(i=0;i<k->tristar_no;i++){
-        for(j=0;j<kp->tristar_no;j++){
-                if((k->tristar[i] == kp->tristar[j]) && k->tristar[i]!=lp){ //ce gre za skupen trikotnik
-                    lp1=k->tristar[i];
-            }
-        }
-}
-
- for(i=0;i<it->tristar_no;i++){
-        for(j=0;j<km->tristar_no;j++){
-            if((it->tristar[i] == km->tristar[j]) && it->tristar[i]!=lm){ //ce gre za skupen trikotnik
-                    lm2=it->tristar[i];
-            } 
-        }
-    }
+ts_vertex *it=bond->vtx1;
+ts_vertex *k=bond->vtx2;
+ts_vertex *km=bond->adjvtx[0];
+ts_vertex *kp=bond->adjvtx[1];
+lm=bond->tria[0];
+lp=bond->tria[1];
 /*
 // DEBUG TESTING!
 fprintf(stderr,"*** Naslov k=%d\n",k);
@@ -231,6 +176,35 @@
 
 // END DEBUG TESTING!
 */
+//find bonds between k and kp (adj[1] vtx)
+//find bonds between it and km (adj[0] vtx)
+
+for(i=0;i<3;i++){
+if(lm->neigh[i]==lp) break;
+	for(j=0;j<3;j++){
+		if(lm->neigh[i]->vertex[j]==it) lm2=lm->neigh[i];
+	}
+}
+
+for(i=0;i<3;i++){
+if(lp->neigh[i]==lm) break;
+	for(j=0;j<3;j++){
+		if(lp->neigh[i]->vertex[j]==k) lp1=lp->neigh[i];
+	}
+}
+
+/*
+for(i=0;i<it->tristar_no;i++){
+	if((it->tristar[i]->vertex[0]==km || it->tristar[i]->vertex[1]==km || it->tristar[i]->vertex[2]==km) && (it->tristar[i]->vertex[0]==it || it->tristar[i]->vertex[1]==it || it->tristar[i]->vertex[2]==it)){
+		lm2=it->tristar[i];
+	}
+	else if ((it->tristar[i]->vertex[0]==kp || it->tristar[i]->vertex[1]==kp || it->tristar[i]->vertex[2]==kp) && (it->tristar[i]->vertex[0]==k || it->tristar[i]->vertex[1]==k || it->tristar[i]->vertex[2]==k)){
+		lp1=it->tristar[i];
+	}
+}
+*/
+if(lm2==NULL ) fatal("ts_flip_bond: Cannot find triangles lm2!",999);
+if(lp1==NULL ) fatal("ts_flip_bond: Cannot find triangles lp1!",999);
 if(lm2==NULL || lp1==NULL) fatal("ts_flip_bond: Cannot find triangles lm2 and lp1!",999);
 
 /*
@@ -351,7 +325,10 @@
   energy_vertex(km);
   energy_vertex(it);
 
+//Extra steps for new bond data structure
 
+bond->adjvtx[0]=k;
+bond->adjvtx[1]=it;
 // END modifications to data structure!
 
 

--
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