X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2Fvmath.h;h=463fea6e32ef6e0bbd8ad5611be235cae15622fa;hp=3cdbedf7fc4353ccf494b2a456d508ec2304975a;hb=fcac764d752234a03df536dd408235170394f6ad;hpb=5029eb9f7a538dd58e1c66c0945784acac8cc58b

diff --git a/src/vmath.h b/src/vmath.h
index 3cdbedf..463fea6 100644
--- a/src/vmath.h
+++ b/src/vmath.h
@@ -141,4 +141,22 @@ static INLINE void mat4_transpose(float *mat)
 	}
 }
 
+/* misc stuff */
+static vec3_t INLINE sphrand(float rad)
+{
+	vec3_t res;
+
+	float u = (float)rand() / RAND_MAX;
+	float v = (float)rand() / RAND_MAX;
+
+	float theta = 2.0f * M_PI * u;
+	float phi = acos(2.0f * v - 1.0f);
+
+	res.x = rad * cos(theta) * sin(phi);
+	res.y = rad * sin(theta) * sin(phi);
+	res.z = rad * cos(phi);
+
+	return res;
+}
+
 #endif	/* VMATH_H_ */