question: computes a rotation quaternion that rotates s to t concode_field_sep float w concode_elem_sep Vec3f v concode_field_sep void fill
target: void function ( final Vec3f arg0 , final Vec3f arg1 ) { final float loc0 = arg0 . dot ( arg1 ) ; final float loc1 = FloatMath . sqrt ( 2.0f * ( 1.0f + loc0 ) ) ; v = arg0 . cross ( arg1 ) . mul ( 1.0f / loc1 ) ; w = loc1 / 2.0f ; }