public static IFunction CreateSimpleFunction(IFunctionStore store)
{
var function = new Function("test");
store.Functions.Add(function);
// initialize schema
IVariable x = new Variable <double>("x", 3);
IVariable y = new Variable <double>("y", 2);
IVariable f1 = new Variable <double>("f1");
function.Arguments.Add(x);
function.Arguments.Add(y);
function.Components.Add(f1);
// write some data
var xValues = new double[] { 0, 1, 2 };
var yValues = new double[] { 0, 1 };
var fValues = new double[] { 100, 101, 102, 103, 104, 105 };
function.SetValues(fValues,
new VariableValueFilter <double>(x, xValues),
new VariableValueFilter <double>(y, yValues),
new ComponentFilter(f1));
return(function);
}
public void RefreshShouldBeFastWhenFunctionDataSourceHasManyChanges()
{
var random = new Random();
IFunction function = new Function
{
Arguments = { new Variable <int>("x") },
Components = { new Variable <int>("f") }
};
int count = 1000;
var componentvalues = Enumerable.Range(1, count).Select(i => random.Next(100)).ToArray();
var argumentvalues = Enumerable.Range(1, count).ToArray();
var chartView = new ChartView();
var lineSeries = ChartSeriesFactory.CreateLineSeries();
var functionBindingList = new FunctionBindingList(function)
{
SynchronizeInvoke = chartView
};
lineSeries.DataSource = functionBindingList;
//don't update on every change...
lineSeries.UpdateASynchronously = true;
lineSeries.XValuesDataMember = function.Arguments[0].DisplayName;
lineSeries.YValuesDataMember = function.Components[0].DisplayName;
chartView.Chart.Series.Add(lineSeries);
lineSeries.PointerVisible = false;
// call one time to make sure that internal HACK TypeUtils.CallGeneric is done, otherwise timing varies a lot
function.SetValues(componentvalues, new VariableValueFilter <int>(function.Arguments[0], argumentvalues));
function.Arguments[0].Clear();
// now do the same when table view is shown
Action <Form> onShown = delegate
{
//the slowdown of chart is absolute minimal
TestHelper.AssertIsFasterThan(50, () =>
function.SetValues(componentvalues, new VariableValueFilter <int>(function.Arguments[0], argumentvalues)));
};
WindowsFormsTestHelper.ShowModal(chartView, onShown);
}