</call>                    </call>                </call>            </call>        </functionCall>        <parameter name="from_position" id="FunctionArgument_8">            <position2DType/>        </parameter>        <parameter name="to_position" id="FunctionArgument_9">            <position2DType/>        </parameter>        <userType id="UserType_0"/>    </userFunction>    <userFunction name="transfer_vector2D_to_direction" id="UserFunction_6">        <functionCall>            <call functionName="If Then Else">                <call functionName=">">                    <call functionName="GetComposedTypeValue">                        <parameterID id="FunctionArgument_10"/>                        <composedAttribute composedTypeID="UserType_0" index="1"/>                    </call>                    <double value="0.0"/>                </call>                <call functionName="If Then Else">                    <call functionName=">">                        <call userFunctionID="UserFunction_7">                            <parameterID id="FunctionArgument_10"/>                        </call>                        <double value="180.0"/>                    </call>                    <call functionName="-">                        <double value="360.0"/>                        <call userFunctionID="UserFunction_7">                            <parameterID id="FunctionArgument_10"/>                        </call>                    </call>                    <call userFunctionID="UserFunction_7">                        <parameterID id="FunctionArgument_10"/>                    </call>                </call>                <call functionName="If Then Else">                    <call functionName="&lt;=">                        <call userFunctionID="UserFunction_7">                            <parameterID id="FunctionArgument_10"/>                        </call>                        <double value="180.0"/>                    </call>                    <call functionName="-">                        <double value="360.0"/>                        <call userFunctionID="UserFunction_7">                            <parameterID id="FunctionArgument_10"/>                        </call>                    </call>                    <call userFunctionID="UserFunction_7">                        <parameterID id="FunctionArgument_10"/>                    </call>                </call>            </call>        </functionCall>        <parameter name="input_vector" id="FunctionArgument_10">            <userType id="UserType_0"/>        </parameter>        <doubleType/>    </userFunction>    <userFunction name="angle_for_vector2D" id="UserFunction_7">        <functionCall>            <call functionName="ACos">                <call functionName="/">                    <call functionName="GetComposedTypeValue">                        <parameterID id="FunctionArgument_11"/>                        <composedAttribute composedTypeID="UserType_0" index="0"/>                    </call>                    <call functionName="Sqrt">                        <call functionName="+">                            <call functionName="Sq">                                <call functionName="GetComposedTypeValue">                                    <parameterID id="FunctionArgument_11"/>                                    <composedAttribute                                    composedTypeID="UserType_0" index="0"/>                                </call>                            </call>                            <call functionName="Sq">                                <call functionName="GetComposedTypeValue">                                    <parameterID id="FunctionArgument_11"/>                                    <composedAttribute                                    composedTypeID="UserType_0" index="1"/>                                </call>                            </call>                        </call>                    </call>                </call>            </call>        </functionCall>        <parameter name="input_vector" id="FunctionArgument_11">            <userType id="UserType_0"/>        </parameter>        <doubleType/>    </userFunction>    <userFunction name="sum_of_3_vectors2D" id="UserFunction_8">        <functionCall>            <call functionName="CreateComposedTypeValue">                <userType id="UserType_0"/>                <call functionName="+">                    <call functionName="+">                        <call functionName="GetComposedTypeValue">                            <parameterID id="FunctionArgument_12"/>                            <composedAttribute                                composedTypeID="UserType_0" index="0"/>                        </call>                        <call functionName="GetComposedTypeValue">                            <parameterID id="FunctionArgument_13"/>                            <composedAttribute                                composedTypeID="UserType_0" index="0"/>                        </call>                    </call>                    <call functionName="GetComposedTypeValue">                        <parameterID id="FunctionArgument_14"/>                        <composedAttribute composedTypeID="UserType_0" index="0"/>                    </call>                </call>                <call functionName="+">                    <call functionName="+">                        <call functionName="GetComposedTypeValue">                            <parameterID id="FunctionArgument_12"/>                            <composedAttribute                                composedTypeID="UserType_0" index="1"/>                        </call>                        <call functionName="GetComposedTypeValue">                            <parameterID id="FunctionArgument_13"/>                            <composedAttribute                                composedTypeID="UserType_0" index="1"/>                        </call>                    </call>                    <call functionName="GetComposedTypeValue">                        <parameterID id="FunctionArgument_14"/>                        <composedAttribute composedTypeID="UserType_0" index="1"/>                    </call>                </call>            </call>        </functionCall>        <parameter name="input_vector1" id="FunctionArgument_12">            <userType id="UserType_0"/>        </parameter>        <parameter name="input_vector2" id="FunctionArgument_13">            <userType id="UserType_0"/>        </parameter>        <parameter name="input_vector3" id="FunctionArgument_14">            <userType id="UserType_0"/>        </parameter>        <userType id="UserType_0"/>    </userFunction>    <userFunction name="sum_of_2_vectors2D" id="UserFunction_9">        <functionCall>            <call functionName="CreateComposedTypeValue">                <userType id="UserType_0"/>                <call functionName="+">                    <call functionName="GetComposedTypeValue">                        <parameterID id="FunctionArgument_15"/>                        <composedAttribute composedTypeID="UserType_0" index="0"/>                    </call>                    <call functionName="GetComposedTypeValue">                        <parameterID id="FunctionArgument_16"/>                        <composedAttribute composedTypeID="UserType_0" index="0"/>                    </call>                </call>                <call functionName="+">                    <call functionName="GetComposedTypeValue">                        <parameterID id="FunctionArgument_15"/>                        <composedAttribute composedTypeID="UserType_0" index="1"/>                    </call>                    <call functionName="GetComposedTypeValue">                        <parameterID id="FunctionArgument_16"/>                        <composedAttribute composedTypeID="UserType_0" index="1"/>                    </call>                </call>            </call>        </functionCall>        <parameter name="input_vector1" id="FunctionArgument_15">            <userType id="UserType_0"/>        </parameter>        <parameter name="input_vector2" id="FunctionArgument_16">            <userType id="UserType_0"/>        </parameter>        <userType id="UserType_0"/>    </userFunction>    <agentClass name="boid" id="ActivityAgentClass_0">        <features>            <buildin xmlns="">Standard Functions</buildin>            <buildin xmlns="">Standard Object Functions</buildin>            <spatialInfo speed="10.0" direction="0.0" radius="30.0"                drawPriority="3.0" x="0.0" y="0.0"/>        </features>        <bodyClass>            <bodyVariableClass id="BodyVariableClass_0">                <variableClass name="direction_as_vector2D"                    id="VariableClass_0" writeable="true">                    <userType id="UserType_0"/>                    <defaultValue>                        <composed composedTypeID="UserType_0"/>                    </defaultValue>                </variableClass>            </bodyVariableClass>            <bodyVariableClass id="BodyVariableClass_1">                <variableClass name="sight" id="VariableClass_1">                    <doubleType/>                    <defaultValue>                        <double value="150.0"/>                    </defaultValue>                </variableClass>            </bodyVariableClass>            <bodyVariableClass id="BodyVariableClass_2">                <variableClass name="too_close_threshold" id="VariableClass_2">                    <doubleType/>                    <defaultValue>                        <double value="50.0"/>                    </defaultValue>                </variableClass>            </bodyVariableClass>            <bodyVariableClass id="BodyVariableClass_3">                <variableClass name="center_of_too_close_boids"                    id="VariableClass_3" writeable="true">                    <position2DType/>                    <defaultValue>                        <position2D x="0.0" y="0.0"/>                    </defaultValue>                </variableClass>            </bodyVariableClass>            <bodyVariableClass id="BodyVariableClass_4">                <variableClass name="target_center_point_X"                    id="VariableClass_4" writeable="true">                    <doubleType/>                    <defaultValue>                        <double value="0.0"/>                    </defaultValue>                </variableClass>            </bodyVariableClass>            <bodyVariableClass id="BodyVariableClass_5">                <variableClass                    name="mean_flight_direction_of_close_boids"                    id="VariableClass_5" writeable="true">                    <userType id="UserType_0"/>                    <defaultValue>                        <composed composedTypeID="UserType_0"/>                    </defaultValue>                </variableClass>            </bodyVariableClass>            <bodyVariableClass id="BodyVariableClass_6">                <variableClass name="speed_for_alignment" id="VariableClass_6">                    <doubleType/>