/// <summary>
/// Draws a scope graph.
/// </summary>
private void DrawGraph(RectangleRange rectangleRange, ScopeGraph graph)
{
var lineType = graph.LineType;
using (CreateContextState())
{
ClipToRange(rectangleRange);
switch (lineType)
{
case ScopeLineType.Dots:
DrawGraph(rectangleRange, graph, ScopeLineType.Dots, _dotsGraphLineWidth);
break;
case ScopeLineType.LineAndDots:
DrawGraph(rectangleRange, graph, ScopeLineType.Line, _reducedGraphLineWidth);
DrawGraph(rectangleRange, graph, ScopeLineType.Dots, _dotsGraphLineWidth);
break;
default:
DrawGraph(rectangleRange, graph, lineType, _graphStandardLineWidth);
break;
}
}
}
/// <summary>
/// Draws a scope graph.
/// </summary>
private void DrawGraph(RectangleRange rectangleRange, ScopeGraph graph,
ScopeLineType lineType, double lineWidth)
{
var userToDeviceMatrix = rectangleRange.Matrix;
var vertices = graph.Vertices ?? new PointD[0];
var referencePoint = graph.ReferencePoint;
var referencePointPosition = graph.ReferencePointPosition;
var xScaleFactor = graph.XScaleFactor;
var yScaleFactor = graph.YScaleFactor;
var color = graph.Color;
if (vertices.Any())
{
using (CreateContextState())
{
Context.SetSourceColor(color);
// Create a new transformation matrix considering scale factors
// and reference point position.
var vertexMatrix = (Matrix)userToDeviceMatrix.Clone();
vertexMatrix.Translate(referencePointPosition.X, referencePointPosition.Y);
vertexMatrix.Scale(xScaleFactor, yScaleFactor);
vertexMatrix.Translate(-referencePoint.X, -referencePoint.Y);
using (CreateContextState(vertexMatrix))
{
Context.MoveTo(vertices.First());
foreach (var vertex in vertices)
{
if (lineType == ScopeLineType.Dots)
{
Context.MoveTo(vertex);
}
Context.LineTo(vertex);
}
}
Context.LineWidth = lineWidth;
if (lineType == ScopeLineType.Dots)
{
Context.LineCap = LineCap.Round;
}
Context.Stroke();
}
}
}