mirror of https://github.com/mhowlett/nplot.git
167 lines
6.3 KiB
C#
167 lines
6.3 KiB
C#
/*
|
|
* NPlot - A charting library for .NET
|
|
*
|
|
* FilledRegion.cs
|
|
* Copyright (C) 2003-2006 Matt Howlett and others.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
|
|
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
using System.Drawing;
|
|
|
|
namespace NPlot
|
|
{
|
|
/// <summary>
|
|
/// A quick and dirty Filled region plottable object
|
|
/// </summary>
|
|
public class FilledRegion : IDrawable
|
|
{
|
|
private readonly HorizontalLine hl1_;
|
|
private readonly HorizontalLine hl2_;
|
|
|
|
private readonly LinePlot lp1_;
|
|
private readonly LinePlot lp2_;
|
|
private readonly VerticalLine vl1_;
|
|
private readonly VerticalLine vl2_;
|
|
|
|
private IRectangleBrush areaBrush_;
|
|
private Brush brush_ = new SolidBrush(Color.GhostWhite);
|
|
|
|
/// <summary>
|
|
/// Constructor
|
|
/// </summary>
|
|
/// <param name="lp1">LinePlot that provides bounds to filled region [upper or lower]</param>
|
|
/// <param name="lp2">LinePlot that provides bounds to filled region [upper or lower]</param>
|
|
/// <remarks>TODO: make this work with other plot types.</remarks>
|
|
public FilledRegion(LinePlot lp1, LinePlot lp2)
|
|
{
|
|
lp1_ = lp1;
|
|
lp2_ = lp2;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Constructor
|
|
/// </summary>
|
|
/// <param name="l1">Vertical line to provide bounds for filled region</param>
|
|
/// <param name="l2">The other Vertical line to provide bounds for filled region</param>
|
|
public FilledRegion(VerticalLine l1, VerticalLine l2)
|
|
{
|
|
vl1_ = l1;
|
|
vl2_ = l2;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Constructor
|
|
/// </summary>
|
|
/// <param name="l1">Vertical line to provide bounds for filled region</param>
|
|
/// <param name="l2">The other Vertical line to provide bounds for filled region</param>
|
|
public FilledRegion(HorizontalLine l1, HorizontalLine l2)
|
|
{
|
|
hl1_ = l1;
|
|
hl2_ = l2;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Use this brush (and not a RectangleBrush) for drawing.
|
|
/// </summary>
|
|
public Brush Brush
|
|
{
|
|
set
|
|
{
|
|
brush_ = value;
|
|
areaBrush_ = null;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Use this RectangleBrush (and not a normal Brush) for drawing.
|
|
/// </summary>
|
|
public IRectangleBrush RectangleBrush
|
|
{
|
|
set
|
|
{
|
|
brush_ = null;
|
|
areaBrush_ = value;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Draw the filled region
|
|
/// </summary>
|
|
/// <param name="g">The GDI+ surface on which to draw.</param>
|
|
/// <param name="xAxis">The X-Axis to draw against.</param>
|
|
/// <param name="yAxis">The Y-Axis to draw against.</param>
|
|
public void Draw(Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis)
|
|
{
|
|
ITransform2D t = Transform2D.GetTransformer(xAxis, yAxis);
|
|
|
|
Brush b = brush_;
|
|
if (b == null)
|
|
{
|
|
b = areaBrush_.Get(new Rectangle(xAxis.PhysicalMin.X, yAxis.PhysicalMax.Y, xAxis.PhysicalLength, yAxis.PhysicalLength));
|
|
}
|
|
|
|
if (hl1_ != null && hl2_ != null)
|
|
{
|
|
PointF[] points = new PointF[4];
|
|
points[0] = t.Transform(xAxis.Axis.WorldMin, hl1_.OrdinateValue);
|
|
points[1] = t.Transform(xAxis.Axis.WorldMax, hl1_.OrdinateValue);
|
|
points[2] = t.Transform(xAxis.Axis.WorldMax, hl2_.OrdinateValue);
|
|
points[3] = t.Transform(xAxis.Axis.WorldMin, hl2_.OrdinateValue);
|
|
|
|
g.FillPolygon(b, points);
|
|
}
|
|
else if (vl1_ != null && vl2_ != null)
|
|
{
|
|
PointF[] points = new PointF[4];
|
|
points[0] = t.Transform(vl1_.AbscissaValue, yAxis.Axis.WorldMin);
|
|
points[1] = t.Transform(vl1_.AbscissaValue, yAxis.Axis.WorldMax);
|
|
points[2] = t.Transform(vl2_.AbscissaValue, yAxis.Axis.WorldMax);
|
|
points[3] = t.Transform(vl2_.AbscissaValue, yAxis.Axis.WorldMin);
|
|
|
|
g.FillPolygon(b, points);
|
|
}
|
|
else if (lp1_ != null && lp2_ != null)
|
|
{
|
|
SequenceAdapter a1 = new SequenceAdapter(lp1_.DataSource, lp1_.DataMember, lp1_.OrdinateData, lp1_.AbscissaData);
|
|
SequenceAdapter a2 = new SequenceAdapter(lp2_.DataSource, lp2_.DataMember, lp2_.OrdinateData, lp2_.AbscissaData);
|
|
|
|
int count = a1.Count + a2.Count;
|
|
PointF[] points = new PointF[count];
|
|
for (int i = 0; i < a1.Count; ++i)
|
|
{
|
|
points[i] = t.Transform(a1[i]);
|
|
}
|
|
for (int i = 0; i < a2.Count; ++i)
|
|
{
|
|
points[i + a1.Count] = t.Transform(a2[a2.Count - i - 1]);
|
|
}
|
|
|
|
g.FillPolygon(b, points);
|
|
}
|
|
else
|
|
{
|
|
throw new NPlotException("One of bounds was set to null");
|
|
}
|
|
}
|
|
}
|
|
} |