public void TestGraph()
{
var option = new GraphOption {
xDelta = 20, yDelta = 0.5, yRatio = 0.5, SampleCount = 500
};
var graphPlotter = new GraphPlotter(option);
graphPlotter.Plot(Math.Tanh, new Interv(5, 102));
graphPlotter.Plot(x => Math.Cos(x) + 1, new Interv(10, 90), 3);
var graph = graphPlotter.GetGraphBlock();
var blockReference = new BlockReference(Point3d.Origin, graph);
var first = Interaction.GetPoint("\nSpecify extent point 1");
Interaction.InsertScalingEntity(blockReference, first, "\nSpecify extent point 2");
}
public ObjectId GetGraphBlock()
{
if (this.XRange == null || this.YRange == null)
{
throw new Exception("Plot undefined.");
}
var entIds = new List <ObjectId>();
// Ranges cannot be less than epsilon.
if (this.XRange.Length < Consts.Epsilon)
{
this.XRange = new Interv(this.XRange.Start - Consts.Epsilon, this.XRange.End + Consts.Epsilon);
}
if (this.YRange.Length < Consts.Epsilon)
{
this.YRange = new Interv(this.YRange.Start - Consts.Epsilon, this.YRange.End + Consts.Epsilon);
}
// Stops
double[] xStops = GraphPlotter.GetDivStops(this.Option.xDelta, this.XRange, this.Option.xRedundanceFactor);
double[] yStops = GraphPlotter.GetDivStops(this.Option.yDelta, this.YRange, this.Option.yRedundanceFactor);
// Grid lines
var gridLines = new List <ObjectId>();
foreach (var xStop in xStops)
{
gridLines.Add(Draw.Line(new Point3d(xStop, this.RealRatio * yStops.First(), 0), new Point3d(xStop, this.RealRatio * yStops.Last(), 0)));
}
foreach (var yStop in yStops)
{
gridLines.Add(Draw.Line(new Point3d(xStops.First(), this.RealRatio * yStop, 0), new Point3d(xStops.Last(), this.RealRatio * yStop, 0)));
}
gridLines.QForEach <Entity>(line => line.ColorIndex = this.Option.GridColor);
entIds.AddRange(gridLines);
// Labels
var labels = new List <ObjectId>();
double txtHeight = this.XRange.Length / 50;
foreach (var xStop in xStops)
{
labels.Add(Draw.MText(xStop.ToString("0.###"), txtHeight, new Point3d(xStop, this.RealRatio * yStops.First() - 2 * txtHeight, 0), 0, true));
}
foreach (var yStop in yStops)
{
labels.Add(Draw.MText(yStop.ToString("0.###"), txtHeight, new Point3d(xStops.First() - 2 * txtHeight, this.RealRatio * yStop, 0), 0, true));
}
labels.QForEach <Entity>(mt => mt.ColorIndex = this.Option.LabelColor);
entIds.AddRange(labels);
// Curves
foreach (var curve in this.Curves)
{
var plineId = Draw.Pline(curve.Item1.OrderBy(point => point.X).Select(point => new Point3d(point.X, this.RealRatio * point.Y, 0)));
int color1 = curve.Item2 == -1 ? this.Option.CurveColor : curve.Item2;
plineId.QOpenForWrite <Entity>(pline => pline.ColorIndex = color1);
entIds.Add(plineId);
}
// Returns a block.
var result = Draw.Block(entIds, "tjGraph" + LogManager.GetTimeBasedName(), entIds.GetCenter());
entIds.QForEach(entity => entity.Erase());
entIds.Clear();
return(result);
}