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本例程实现dxf文件的加载及显示，其中显示部门通过winform加载WPF控件实现
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Forms;
using System.Windows.Media;
using netDxf;
using netDxf.Entities;
using System.Globalization;
using System.Windows.Input;
namespace DXFMaiform
{
public partial class MainForm : Form
{
private DxfDocument dxf;
public MainForm()
{
InitializeComponent();
WindowState = FormWindowState.Maximized;
}
private void MainForm_Load(object sender, EventArgs e)
{
// wpfUserControl.MouseWheel = new MouseWheelEventHandler(OnMouseWheel);
// base.OnLoad(e);
}
protected override void OnMouseWheel(System.Windows.Forms.MouseEventArgs e)
{
// wpfUserControl.On_MouseWheel((System.Windows.Input.MouseWheelEventArgs)e);
}
protected override void OnMouseMove(System.Windows.Forms.MouseEventArgs e)
{
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
string filename = string.Empty;
using (OpenFileDialog openDlg = new OpenFileDialog())
{
openDlg.InitialDirectory = "C:\\";
openDlg.Filter = "DXF 文件 |*.dxf";
if (openDlg.ShowDialog() == DialogResult.OK)
{
filename = openDlg.FileName;
if (wpfUserControl.MyCanvas.Children.Count != 0)
{
wpfUserControl.MyCanvas.Children.Clear();
}
dxf = new DxfDocument();
dxf.Load(filename);
}
}
AddLayers();
AddGraph();
AdjustGraph();
}
private void AddLayers()
{
foreach(var lay in dxf.Layers)
{
System.Windows.Shapes.Path path = new System.Windows.Shapes.Path();
path.Stroke = new SolidColorBrush(System.Windows.Media.Color.FromArgb(lay.Color.ToColor().A, lay.Color.ToColor().R, lay.Color.ToColor().G, lay.Color.ToColor().B));
path.Tag = lay.Name;
GeometryGroup GeoGroup = new GeometryGroup();
path.Data = GeoGroup;
wpfUserControl.MyCanvas.Children.Add(path);
}
System.Windows.Shapes.Path label = new System.Windows.Shapes.Path();
GeometryGroup Character = new GeometryGroup();
label.Data = Character;
label.Tag = "Character";
wpfUserControl.MyCanvas.Children.Add(label);
}
private void AddGraph()
{
AddCircle();
AddEllipses();
AddArcs();
AddLines();
AddPolylines();
AddText();
AddMText();
}
private void AdjustGraph()
{
wpfUserControl.MyCanvas.Offset = new System.Windows.Point(0, 0);
wpfUserControl.MyCanvas.Scale = 1;
//double maxLeft=0 ;
//double maxRight=0;
//double maxTop=0;
//double maxBottom=0 ;
var bound = ((GeometryGroup)((System.Windows.Shapes.Path)(wpfUserControl.MyCanvas.Children[0])).Data).Bounds;
double maxLeft = bound.Left;
double maxRight = bound.Right;
double maxTop = bound.Top;
double maxBottom = bound.Bottom;
foreach (var p in wpfUserControl.MyCanvas.Children)
{
System.Windows.Shapes.Path path = (System.Windows.Shapes.Path)p;
if ((string)path.Tag == "Character")
{
path.StrokeThickness = 0.05;
path.Stroke = System.Windows.Media.Brushes.White;
path.Fill = System.Windows.Media.Brushes.White;
}
else
{
path.StrokeThickness = 1;
}
CalBounds(ref maxLeft, ref maxRight, ref maxTop, ref maxBottom, path);
//path.Stroke = Brushes.White;
//path.StrokeThickness = 2;
//double Sx = path.Data.Bounds.Left (path.Data.Bounds.Right - path.Data.Bounds.Left) / 2;
//double Sy = path.Data.Bounds.Top (path.Data.Bounds.Bottom - path.Data.Bounds.Top) / 2;
//double width = path.Data.Bounds.Right - path.Data.Bounds.Left;
//double length = path.Data.Bounds.Bottom - path.Data.Bounds.Top;
//double scaleX = Benchmark.ActualWidth / (path.Data.Bounds.Right - path.Data.Bounds.Left);
//double scaleY = Benchmark.ActualHeight / (path.Data.Bounds.Bottom - path.Data.Bounds.Top);
}
double Ex = wpfUserControl.Benchmark.ActualWidth / 2;
double Ey = wpfUserControl.Benchmark.ActualHeight / 2;
double Sx = maxLeft (maxRight - maxLeft) / 2;
double Sy = maxTop (maxBottom - maxTop) / 2;
double scaleX = wpfUserControl.Benchmark.ActualWidth / (maxRight - maxLeft);
double scaleY = wpfUserControl.Benchmark.ActualHeight / (maxBottom - maxTop);
var scale = (scaleX < scaleY ? scaleX : scaleY) * 0.8;
wpfUserControl.MyCanvas.Scale *= scale;
foreach (var p in wpfUserControl.MyCanvas.Children)
{
System.Windows.Shapes.Path path = (System.Windows.Shapes.Path)p;
path.StrokeThickness /= scale;
}
System.Windows.Point size = new System.Windows.Point(Ex - scale * Sx, Ey - scale * Sy);
wpfUserControl.MyCanvas.Offset -= (Vector)size;
}
private static void CalBounds(ref double maxLeft, ref double maxRight, ref double maxTop, ref double maxBottom, System.Windows.Shapes.Path path)
{
maxLeft = maxLeft < ((GeometryGroup)path.Data).Bounds.Left ? maxLeft : ((GeometryGroup)path.Data).Bounds.Left;
maxRight = maxRight > ((GeometryGroup)path.Data).Bounds.Right ? maxRight : ((GeometryGroup)path.Data).Bounds.Right;
maxTop = maxTop < ((GeometryGroup)path.Data).Bounds.Top ? maxTop : ((GeometryGroup)path.Data).Bounds.Top;
maxBottom = maxBottom > ((GeometryGroup)path.Data).Bounds.Bottom ? maxBottom : ((GeometryGroup)path.Data).Bounds.Bottom;
}
private void AddCircle()
{
foreach(var c in dxf.Circles)
{
EllipseGeometry circle = new EllipseGeometry(new System.Windows.Point(c.Center.X, -c.Center.Y), c.Radius, c.Radius);
System.Windows.Shapes.Path path = new System.Windows.Shapes.Path();
GeometryGroup GeoGroup = new GeometryGroup();
GeoGroup.Children.Add(circle);
path.Stroke = new SolidColorBrush(System.Windows.Media.Colors.White);
path.Data = GeoGroup;
path.Tag = "tu";
path.StrokeThickness = 2;
path.MouseLeftButtonDown = (o, s) =>
{
CalculateIntersection(path);
};
wpfUserControl.MyCanvas.Children.Add(path);
}
}
private void CalculateIntersection(System.Windows.Shapes.Path path)
{
path.Stroke = new SolidColorBrush(System.Windows.Media.Colors.Yellow);
if (path.Tag.ToString() == "line")
{
LineGeometry line = (LineGeometry)(((GeometryGroup)path.Data).Children[0]);
double dx = line.StartPoint.X - line.EndPoint.X;
double k = 0;
double b = 0;
if (dx != 0)
{
k = (line.StartPoint.Y - line.EndPoint.Y) / (line.StartPoint.X - line.EndPoint.X);
b = line.StartPoint.Y - line.StartPoint.X;
}
else
{
k = 1000;
b = 1000;
}
// line1.Text = string.Format("{0},{1}", k.ToString(), b.ToString());
}
}
private void AddEllipses()
{
foreach(var e in dxf.Ellipses)
{
RotateTransform trans = new RotateTransform(-e.Rotation, e.Center.X, -e.Center.Y);
EllipseGeometry ellipse = new EllipseGeometry(new System.Windows.Point(e.Center.X, -e.Center.Y), e.MajorAxis / 2, e.MinorAxis / 2, trans);
System.Windows.Shapes.Path path = new System.Windows.Shapes.Path();
GeometryGroup GeoGroup = new GeometryGroup();
GeoGroup.Children.Add(ellipse);
path.Stroke = new SolidColorBrush(System.Windows.Media.Colors.White);
path.Data = GeoGroup;
path.Tag = "ellipse";
path.StrokeThickness = 2;
path.MouseLeftButtonDown = (o, s) =>
{
CalculateIntersection(path);
};
wpfUserControl.MyCanvas.Children.Add(path);
}
}
private void AddArcs()
{
foreach (var a in dxf.Arcs)
{
double Sx = a.Center.X a.Radius * System.Math.Cos(a.StartAngle / 180 * Math.PI);
double Sy = -a.Center.Y - a.Radius * System.Math.Sin(a.StartAngle / 180 * Math.PI);
System.Windows.Point Start = new System.Windows.Point(Sx, Sy);
double Ex = a.Center.X a.Radius * System.Math.Cos(a.EndAngle / 180 * Math.PI);
double Ey = -a.Center.Y - a.Radius * System.Math.Sin(a.EndAngle / 180 * Math.PI);
System.Windows.Point End = new System.Windows.Point(Ex, Ey);
ArcSegment arc = new ArcSegment();
arc.Point = End;
arc.RotationAngle = a.EndAngle - a.StartAngle;
arc.RotationAngle = arc.RotationAngle >= 0 ? arc.RotationAngle : arc.RotationAngle 360;
arc.IsLargeArc = arc.RotationAngle > 180 ? true : false;
arc.SweepDirection = SweepDirection.Counterclockwise;
arc.Size = new System.Windows.Size(a.Radius, a.Radius);
PathFigure path = new PathFigure();
path.StartPoint = Start;
path.Segments.Add(arc);
PathGeometry pathgeo = new PathGeometry();
pathgeo.Figures.Add(path);
System.Windows.Shapes.Path _path = new System.Windows.Shapes.Path();
GeometryGroup GeoGroup = new GeometryGroup();
GeoGroup.Children.Add(pathgeo);
_path.Stroke = new SolidColorBrush(System.Windows.Media.Colors.White);
_path.Data = GeoGroup;
_path.Tag = "arc";
_path.StrokeThickness = 2;
_path.MouseLeftButtonDown = (o, s) =>
{
CalculateIntersection(_path);
};
wpfUserControl.MyCanvas.Children.Add(_path);
}
}
private void AddPolylines()
{
foreach (var p in dxf.Polylines)
{
if (p.Flags == PolylineTypeFlags.OpenPolyline || p.Flags == PolylineTypeFlags.ClosedPolylineOrClosedPolygonMeshInM)
{
LightWeightPolyline polygon = (LightWeightPolyline)p;
PathFigure path = new PathFigure();
float bulge = 0;
System.Windows.Point prePoint = new System.Windows.Point();
System.Windows.Point point = new System.Windows.Point();
path.IsClosed = polygon.IsClosed;
for (int i = 0; i < polygon.Vertexes.Count(); i)
{
var seg = polygon.Vertexes[i];
point = new System.Windows.Point(seg.Location.X, -seg.Location.Y);
if (i == 0)
{
path.StartPoint = point;
prePoint = point;
bulge = seg.Bulge;
//angle = 4 * System.Math.Atan(seg.Bulge) / Math.PI * 180;
}
else
{
ArcSegment arc = new ArcSegment();
arc.Point = point;
//if (angle != 0)
if (bulge != 0)
{
double angle = 4 * Math.Atan(Math.Abs(bulge)) / Math.PI * 180;
double length = Math.Sqrt((point.X - prePoint.X) * (point.X - prePoint.X) (point.Y - prePoint.Y) * (point.Y - prePoint.Y));
//double radius = length / (Math.Sqrt(2 * (1 - Math.Cos(angle / 180 * Math.PI))));
double radius = Math.Abs(length / (2 * Math.Sin(angle / 360 * Math.PI)));
arc.Size = new System.Windows.Size(radius, radius);
arc.RotationAngle = angle;
arc.SweepDirection = bulge < 0 ? SweepDirection.Clockwise : SweepDirection.Counterclockwise;
arc.IsLargeArc = Math.Abs(bulge) > 1 ? true : false;
}
prePoint = point;
bulge = seg.Bulge;
//angle = 4 * System.Math.Atan(seg.Bulge) / Math.PI * 180;
path.Segments.Add(arc);
}
}
PathGeometry pathgeo = new PathGeometry();
pathgeo.Figures.Add(path);
System.Windows.Shapes.Path _path = new System.Windows.Shapes.Path();
GeometryGroup GeoGroup = new GeometryGroup();
GeoGroup.Children.Add(pathgeo);
_path.Stroke = new SolidColorBrush(System.Windows.Media.Colors.White);
_path.Data = GeoGroup;
_path.Tag = "polylines";
_path.StrokeThickness = 2;
_path.MouseLeftButtonDown = (o, s) =>
{
CalculateIntersection(_path);
};
wpfUserControl.MyCanvas.Children.Add(_path);
}
}
}
private void AddText()
{
foreach (var t in dxf.Texts)
{
FormattedText formattedText = new FormattedText(t.Value, CultureInfo.GetCultureInfo("zh-CN"), System.Windows.FlowDirection.LeftToRight, new Typeface("仿宋体"), t.Height * (96.0 / 72.0), System.Windows.Media.Brushes.White);
//SolidColorBrush brush = new SolidColorBrush(Colors.Orange);
LinearGradientBrush brush = new LinearGradientBrush(
Colors.Orange,
Colors.Teal,
90.0);
formattedText.SetForegroundBrush(brush);
Geometry textGeometry = formattedText.BuildGeometry(new System.Windows.Point(t.BasePoint.X, -t.BasePoint.Y - t.Height * (96.0 / 72.0)));
PathGeometry pathGeometry = textGeometry.GetFlattenedPathGeometry();
foreach (var p in wpfUserControl.MyCanvas.Children)
{
System.Windows.Shapes.Path path = (System.Windows.Shapes.Path)p;
if ((string)path.Tag == "Character")
{
((GeometryGroup)path.Data).Children.Add(pathGeometry);
}
}
//Characters.Children.Add(pathGeometry);
}
}
private void AddMText()
{
foreach (var t in dxf.MTexts)
{
FormattedText formattedText = new FormattedText(t.Value, CultureInfo.GetCultureInfo("zh-CN"), System.Windows.FlowDirection.LeftToRight, new Typeface("仿宋体"), t.Height * (96.0 / 72.0), System.Windows.Media.Brushes.White);
double angle = 0;
if (t.Normal.X != 0)
{
angle = Math.Atan(t.Normal.Y / t.Normal.X) / Math.PI * 180;
angle = angle > 0 ? angle : angle 360;
}
else
{
if (t.Normal.Y > 0)
{
angle = 90;
}
else if (t.Normal.Y < 0)
{
angle = 270;
}
else
{
angle = 0;
}
}
SolidColorBrush brush = new SolidColorBrush(Colors.White);
//LinearGradientBrush brush = new LinearGradientBrush(
// Colors.Orange,
// Colors.Teal,
// 90.0);
formattedText.SetForegroundBrush(brush);
//Geometry textGeometry = formattedText.BuildGeometry(new System.Windows.Point(t.BasePoint.X, -t.BasePoint.Y - t.Height * (96.0 / 72.0)));
Geometry textGeometry = formattedText.BuildGeometry(new System.Windows.Point(t.BasePoint.X, -t.BasePoint.Y));
RotateTransform rt = new RotateTransform(-angle, t.BasePoint.X, -t.BasePoint.Y);
textGeometry.Transform = rt;
PathGeometry pathGeometry = textGeometry.GetFlattenedPathGeometry();
foreach (var p in wpfUserControl.MyCanvas.Children)
{
System.Windows.Shapes.Path path = (System.Windows.Shapes.Path)p;
if ((string)path.Tag == "Character")
{
((GeometryGroup)path.Data).Children.Add(pathGeometry);
}
}
//Characters.Children.Add(pathGeometry);
}
}
private void AddLines()
{
foreach (var l in dxf.Lines)
{
LineGeometry line = new LineGeometry(new System.Windows.Point(l.StartPoint.X, -l.StartPoint.Y), new System.Windows.Point(l.EndPoint.X, -l.EndPoint.Y));
System.Windows.Shapes.Path path = new System.Windows.Shapes.Path();
GeometryGroup GeoGroup = new GeometryGroup();
GeoGroup.Children.Add(line);
path.Stroke = new SolidColorBrush(System.Windows.Media.Colors.White);
path.Data = GeoGroup;
path.Tag = "line";
path.StrokeThickness = 2;
path.MouseLeftButtonDown = (o, s) =>
{
CalculateIntersection(path);
};
wpfUserControl.MyCanvas.Children.Add(path);
}
}
}
}