/// <summary>
/// Creates a cursor used for time measurements.
/// </summary>
internal static BoundCursor CreateTimeMeasurementCursor(
MeasurementCursorViewModel cursorVM,
GraphbaseViewModel graphbaseVM,
bool isReferenceCursor,
Func <double> deltaReferenceLevelProvider,
Func <double> referenceLevelProvider)
{
Func <ScopeCursor, ValueConverter <double, double>, PB.Binding> bindingProvider =
(cursor, valueConverter) => PB.Binding.Create(() =>
cursor.Position.X == valueConverter.DerivedValue &&
valueConverter.OriginalValue == cursorVM.Value);
var influencingObjects = new INotifyPropertyChanged[]
{
graphbaseVM,
graphbaseVM.TriggerVM,
};
return(CreateMeasurementCursor(
MeasurementAxis.X,
isReferenceCursor,
() => cursorVM.Value,
bindingProvider,
deltaReferenceLevelProvider,
() => graphbaseVM.ScaleFactor,
() => graphbaseVM.TriggerVM.HorizontalPosition,
referenceLevelProvider,
graphbaseVM.BaseUnitString,
graphbaseVM.Color,
influencingObjects));
}
/// <summary>
/// Configures the main scope screen viewmodel.
/// </summary>
private void ConfigureMainScopeScreenVM(IScopeScreenViewModel scopeScreenVM,
IEnumerable <SampleSequence> sampleSequences)
{
// === Channels configuration ===
var timeScaleFactor = 1;
var channelVMs = new[]
{
new ChannelViewModel("V", new Position(0, 1), timeScaleFactor, 1,
BuildChannelCaptionFromIndex(0), _channelColors[0]),
new ChannelViewModel("V", new Position(0, -2), timeScaleFactor, 1,
BuildChannelCaptionFromIndex(1), _channelColors[1]),
};
var index = 0;
channelVMs[index].MeasurementCursor1VM.Visible = true;
channelVMs[index].MeasurementCursor2VM.Visible = true;
channelVMs[index].MeasurementCursor1VM.Value = 2.0;
channelVMs[index].MeasurementCursor2VM.Value = 3.0;
// index++;
// channelVMs[index].MeasurementCursor1VM.Visible = true;
// channelVMs[index].MeasurementCursor2VM.Visible = true;
// channelVMs[index].MeasurementCursor1VM.Value = -0.5;
// channelVMs[index].MeasurementCursor2VM.Value = 0.5;
scopeScreenVM.ChannelVMs = channelVMs;
// === Graphbase configuration ===
var graphbaseVM = new GraphbaseViewModel("s", 1, _baseColor);
var trigger = new LevelTrigger(LevelTriggerMode.RisingEdge, 0.5);
var triggerChannelIndex = 0;
graphbaseVM.TriggerVM =
new LevelTriggerViewModel(trigger, channelVMs[triggerChannelIndex]);
graphbaseVM.MeasurementCursor1VM.Visible = true;
graphbaseVM.MeasurementCursor2VM.Visible = true;
graphbaseVM.MeasurementCursor1VM.Value = 2.0;
graphbaseVM.MeasurementCursor2VM.Value = 3.0;
scopeScreenVM.GraphbaseVM = graphbaseVM;
// === Sample Sequences ===
var sampleSequenceProviders =
sampleSequences.Select(ss => new Func <SampleSequence>(() => ss));
var sampler = new Sampler(sampleSequenceProviders, trigger, triggerChannelIndex);
scopeScreenVM.SampleSequenceProviders = sampler.SampleSequenceProviders;
}
/// <summary>
/// Configures the FFT scope screen viewmodel.
/// </summary>
private void ConfigureFFTScopeScreenVM(IScopeScreenViewModel scopeScreenVM,
IEnumerable <SampleSequence> sampleSequences)
{
// === Channels configuration ===
var frequencyScaleFactor = 1;
var channelVMs = new[]
{
new ChannelViewModel("dB?", new Position(0, 1), frequencyScaleFactor, 0.5,
BuildChannelCaptionFromIndex(0), _channelColors[0]), //TODO Unit
new ChannelViewModel("dB?", new Position(0, -2), frequencyScaleFactor, 0.5,
BuildChannelCaptionFromIndex(1), _channelColors[1]), //TODO Unit
};
var index = 0;
channelVMs[index].MeasurementCursor1VM.Visible = true;
channelVMs[index].MeasurementCursor2VM.Visible = true;
channelVMs[index].MeasurementCursor1VM.Value = -0.5;
channelVMs[index].MeasurementCursor2VM.Value = 0.5;
// index++;
// channelVMs[index].MeasurementCursor1VM.Visible = true;
// channelVMs[index].MeasurementCursor2VM.Visible = true;
// channelVMs[index].MeasurementCursor1VM.Value = -0.5;
// channelVMs[index].MeasurementCursor2VM.Value = 0.5;
scopeScreenVM.ChannelVMs = channelVMs;
// === Graphbase configuration ===
var graphbaseVM = new GraphbaseViewModel("Hz", 0.2, _baseColor);
graphbaseVM.MeasurementCursor1VM.Visible = true;
graphbaseVM.MeasurementCursor2VM.Visible = true;
graphbaseVM.MeasurementCursor1VM.Value = 2.0;
graphbaseVM.MeasurementCursor2VM.Value = 3.0;
scopeScreenVM.GraphbaseVM = graphbaseVM;
// === Sample Sequences ===
var sampleSequenceProviders =
sampleSequences.Select(ss =>
{
var fftSamples = DoFourierTransform(ss);
return(new Func <SampleSequence>(() => fftSamples));
});
scopeScreenVM.SampleSequenceProviders = sampleSequenceProviders;
}
/// <summary>
/// Creates a trigger point cursor.
/// </summary>
internal static BoundCursor CreateTriggerPointCursor(GraphbaseViewModel graphbaseVM)
{
var triggerVM = graphbaseVM.TriggerVM;
Func <String> triggerStateCaptionProvider = () =>
triggerVM.State == TriggerState.Armed ? _armedCaption
: triggerVM.State == TriggerState.Triggered ? _triggeredCaption
: "";
Func <String> positionTextProvider = () =>
UnitHelper.BuildValueText(graphbaseVM.BaseUnitString,
triggerVM.HorizontalPosition / graphbaseVM.ScaleFactor);
var markerColor = CairoHelpers.ToCairoColor(graphbaseVM.Color);
var cursor = new ScopeCursor
{
Lines = ScopeCursorLines.X,
LineWeight = ScopeCursorLineWeight.Low,
SelectableLines = ScopeCursorLines.X,
Markers = ScopeCursorMarkers.XFull,
Color = markerColor,
Captions = new []
{
new ScopePositionCaption(triggerStateCaptionProvider, ScopeHorizontalAlignment.Left, ScopeVerticalAlignment.Top, ScopeAlignmentReference.XPositionAndVerticalRangeEdge, true, markerColor),
new ScopePositionCaption(triggerStateCaptionProvider, ScopeHorizontalAlignment.Left, ScopeVerticalAlignment.Bottom, ScopeAlignmentReference.XPositionAndVerticalRangeEdge, true, markerColor),
new ScopePositionCaption(positionTextProvider, ScopeHorizontalAlignment.Right, ScopeVerticalAlignment.Top, ScopeAlignmentReference.XPositionAndVerticalRangeEdge, true, markerColor),
},
};
// === Create bindings. ===
// Bind the cursor's position.
var binding = PB.Binding.Create(() => cursor.Position.X == triggerVM.HorizontalPosition);
return(new BoundCursor(cursor, new [] { binding }));
}
