From 250de4d124ea8dc4929a9c334d94fc51018fa53c Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@fe.uni-lj.si>
Date: Wed, 06 Jul 2016 08:25:54 +0000
Subject: [PATCH] Finished spontaneous force
---
src/energy.c | 27 +++++++++++++++++++++++++++
1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/src/energy.c b/src/energy.c
index 0e57e71..7c29c0b 100644
--- a/src/energy.c
+++ b/src/energy.c
@@ -207,3 +207,30 @@
}
return TS_SUCCESS;
}
+
+ts_double direct_force_energy(ts_vesicle *vesicle, ts_vertex *vtx, ts_vertex *vtx_old){
+ if(fabs(vtx->c)<1e-15) return 0.0;
+// printf("was here");
+ if(fabs(vesicle->tape->F)<1e-15) return 0.0;
+
+ ts_double norml,ddp=0.0;
+ ts_uint i;
+ ts_double xnorm=0.0,ynorm=0.0,znorm=0.0;
+ /*find normal of the vertex as average normal of all the triangles surrounding it. */
+ for(i=0;i<vtx->tristar_no;i++){
+ xnorm=vtx->tristar[i]->xnorm;
+ ynorm=vtx->tristar[i]->ynorm;
+ znorm=vtx->tristar[i]->znorm;
+ }
+ /*normalize*/
+ norml=sqrt(xnorm*xnorm+ynorm*ynorm+znorm*znorm);
+ xnorm/=norml;
+ ynorm/=norml;
+ znorm/=norml;
+ /*calculate ddp, perpendicular displacement*/
+ ddp=xnorm*(vtx->x-vtx_old->x)+xnorm*(vtx->y-vtx_old->y)+znorm*(vtx->z-vtx_old->z);
+ /*calculate dE*/
+// printf("ddp=%e",ddp);
+ return vesicle->tape->F*ddp;
+
+}
--
Gitblit v1.9.3