/*@brief Return the linear interpolation between two vectors @param v1 One vector @param v2 The other vector @param t The ration of this to v (t = 0 => return v1, t=1 => return v2) */ public static void lerp( btVector3 v1, btVector3 v2, double t, out btVector3 result ) { v1.lerp( ref v2, t, out result ); }