Function Project

engine/script/src/script_vmath.cpp:2334–2343

projects a vector onto another vector * * Calculates the extent the projection of the first vector onto the second. * The returned value is a scalar p defined as: * * p = |P| cos θ / |Q| * * where θ is the angle between the vectors P and Q. * * @name vmath.project * @param v1 [type:vector3] vector to be projected on the s

     * ```
     */
    static int Project(lua_State* L)
    {
        Vector3* v1 = CheckVector3(L, 1);
        Vector3* v2 = CheckVector3(L, 2);
        float sq_len = dmVMath::LengthSqr(*v2);
        if (sq_len == 0.0f)
            return luaL_error(L, "The second %s.%s to %s.%s must have a length bigger than 0.", SCRIPT_LIB_NAME, SCRIPT_TYPE_NAME_VECTOR3, SCRIPT_LIB_NAME, "project");
        lua_pushnumber(L, dmVMath::Dot(*v1, *v2) / sq_len);
        return 1;
    }

    /*# performs an element wise multiplication of two vectors
     *