X-Git-Url: https://hackdaworld.org/gitweb/?a=blobdiff_plain;f=math%2Fmath.c;h=6f4345e0124460ebbcb63a0482df9e367e592629;hb=e6f456c0fa807b86e1b25996e70efcdcfe390ea5;hp=9cfaff67296592e49da59f2346e61382ebcf3b3a;hpb=3ffe2a08e25fc091b6241885055450009267e2d8;p=physik%2Fposic.git

diff --git a/math/math.c b/math/math.c
index 9cfaff6..6f4345e 100644
--- a/math/math.c
+++ b/math/math.c
@@ -76,3 +76,20 @@ double v3_norm(t_3dvec *a) {
 	return(sqrt(v3_absolute_square(a)));
 }
 
+int v3_per_bound(t_3dvec *a,t_3dvec *dim) {
+
+	double x,y,z;
+
+	x=0.5*dim->x;
+	y=0.5*dim->y;
+	z=0.5*dim->z;
+
+	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;
+	else if(-a->y>y) a->y+=dim->y;
+	if(a->z>=z) a->z-=dim->z;
+	else if(-a->z>z) a->z+=dim->z;
+
+	return 0;
+}