X-Git-Url: https://hackdaworld.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=math%2Fmath.c;h=54d79fd9cf20533e1867e5933728ac4528021670;hb=000e702c884e337f27ae66b6506ff9f9b613f8a8;hp=6488248a39235d38d8e74aaa03933128a046f5ce;hpb=4e6604346459a4a8619bfc45f2a4b7dbd925ae86;p=physik%2Fposic.git

diff --git a/math/math.c b/math/math.c
index 6488248..54d79fd 100644
--- a/math/math.c
+++ b/math/math.c
@@ -66,6 +66,11 @@ int v3_cmp(t_3dvec *a,t_3dvec *b) {
 	return(memcmp(a,b,sizeof(t_3dvec)));
 }
 
+double v3_scalar_product(t_3dvec *a,t_3dvec *b) {
+
+	return(a->x*b->x+a->y*b->y+a->z*b->z);
+}
+
 double v3_absolute_square(t_3dvec *a) {
 
 	return(a->x*a->x+a->y*a->y+a->z*a->z);
@@ -84,11 +89,11 @@ 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;