From: hackbard <hackbard>
Date: Fri, 31 Mar 2006 15:13:08 +0000 (+0000)
Subject: testing
X-Git-Url: https://www.hackdaworld.org/gitweb/?p=physik%2Fposic.git;a=commitdiff_plain;h=83775c491117faa149281d0302fc8b8064d6b080

testing
---

diff --git a/math/math.c b/math/math.c
index 6488248..6f4345e 100644
--- a/math/math.c
+++ b/math/math.c
@@ -84,11 +84,11 @@ int v3_per_bound(t_3dvec *a,t_3dvec *dim) {
 	y=0.5*dim->y;
 	z=0.5*dim->z;
 
-	if(a->x>x) a->x-=dim->x;
+	if(a->x>=x) a->x-=dim->x;
 	else if(-a->x>x) a->x+=dim->x;
-	if(a->y>y) a->y-=dim->y;
+	if(a->y>=y) a->y-=dim->y;
 	else if(-a->y>y) a->y+=dim->y;
-	if(a->z>z) a->z-=dim->z;
+	if(a->z>=z) a->z-=dim->z;
 	else if(-a->z>z) a->z+=dim->z;
 
 	return 0;
diff --git a/moldyn.c b/moldyn.c
index 08901c7..3d669d2 100644
--- a/moldyn.c
+++ b/moldyn.c
@@ -199,9 +199,10 @@ int moldyn_integrate(t_moldyn *moldyn) {
 
 		/* check for visualiziation */
 		// to be continued ...
-		if(!(i%100)) 
+		if(!(i%1)) {
 			visual_atoms(moldyn->visual,i*moldyn->tau,
 			             moldyn->atom,moldyn->count);
+		}
 	}
 
 	return 0;
@@ -321,7 +322,7 @@ int force_lennard_jones(t_moldyn *moldyn) {
 				h1*=h2;				/* 1/r^14 */
 				h1*=sig12;
 				h2*=sig6;
-				d=-12.0*h1+6.0*h2;
+				d=12.0*h1-6.0*h2;
 				d*=eps;
 				v3_scale(&force,&distance,d);
 				v3_add(&(atom[j].f),&(atom[j].f),&force);
diff --git a/posic.c b/posic.c
index 04d9b7f..926e20c 100644
--- a/posic.c
+++ b/posic.c
@@ -51,12 +51,25 @@ int main(int argc,char **argv) {
 	t=TEMPERATURE;
 
 	printf("placing silicon atoms ... ");
-	count=create_lattice(DIAMOND,Si,M_SI,LC_SI,a,b,c,&si);
-	printf("(%d) ok!\n",count);
+	//count=create_lattice(DIAMOND,Si,M_SI,LC_SI,a,b,c,&si);
+	//printf("(%d) ok!\n",count);
+	count=2;
+	si=malloc(2*sizeof(t_atom));
+	si[0].r.x=2.0;
+	si[0].r.y=0;
+	si[0].r.z=0;
+	si[0].element=Si;
+	si[0].mass=14.0;
+	si[1].r.x=-2.0;
+	si[1].r.y=0;
+	si[1].r.z=0;
+	si[1].element=Si;
+	si[1].mass=14.0;
 
 	printf("setting thermal fluctuations\n");
-	thermal_init(si,&random,count,t);
-
+	//thermal_init(si,&random,count,t);
+	v3_zero(&(si[0].v));
+	v3_zero(&(si[1].v));
 
 	/* check kinetic energy */
 
@@ -73,7 +86,8 @@ int main(int argc,char **argv) {
 	md.atom=si;
 	md.potential=potential_lennard_jones;
 	md.force=force_lennard_jones;
-	md.cutoff_square=((LC_SI/4.0)*(LC_SI/4.0));
+	//md.cutoff_square=((LC_SI/4.0)*(LC_SI/4.0));
+	md.cutoff_square=36.0;
 	md.pot_params=&lj;
 	md.integrate=velocity_verlet;
 	md.time_steps=RUNS;
@@ -85,7 +99,7 @@ int main(int argc,char **argv) {
 	help=lj.sigma6*lj.sigma6;
 	lj.sigma6*=help;
 	lj.sigma12=lj.sigma6*lj.sigma6;
-	lj.epsilon=1;
+	lj.epsilon=10000;
 
 	u=get_e_pot(&md);
 
diff --git a/posic.h b/posic.h
index 854dfb8..6a8131d 100644
--- a/posic.h
+++ b/posic.h
@@ -17,14 +17,14 @@
 #ifndef POSIC_H
 #define POSIC_H
 
-#define RUNS 15000
-#define TAU 0.000001
+#define RUNS 200
+#define TAU 0.001
 
 #define TEMPERATURE 273.0 
 
-#define LEN_X 1
-#define LEN_Y 1
-#define LEN_Z 1
+#define LEN_X 15
+#define LEN_Y 15
+#define LEN_Z 15
 
 #define R_CUTOFF 20
 
diff --git a/visual/visual.c b/visual/visual.c
index 7b7862e..9d0f5a2 100644
--- a/visual/visual.c
+++ b/visual/visual.c
@@ -78,8 +78,8 @@ int visual_atoms(t_visual *v,double time,t_atom *atom,int n) {
 	/* script file update */
 	dprintf(v->fd,"load xyz %s\n",file);
 	dprintf(v->fd,"spacefill 200\n");
-	dprintf(v->fd,"rotate x 100\n");
-	dprintf(v->fd,"rotate y 10\n");
+	//dprintf(v->fd,"rotate x 100\n");
+	//dprintf(v->fd,"rotate y 10\n");
 	dprintf(v->fd,"set ambient 20\n");
 	dprintf(v->fd,"set specular on\n");
 	sprintf(file,"%s-%.15f.ppm",v->fb,time);