protected override void DrawCore(DrawingContext drawingContext, DrawingAttributes drawingAttributes)
{
if (drawingContext == null)
{
throw new ArgumentNullException("drawingContext");
}
if (null == drawingAttributes)
{
throw new ArgumentNullException("drawingAttributes");
}
Pen pen = new Pen
{
StartLineCap = PenLineCap.Round,
EndLineCap = PenLineCap.Round,
Brush = new SolidColorBrush(drawingAttributes.Color),
Thickness = drawingAttributes.Width
};
BrushConverter bc = new BrushConverter();
Brush BackGround = (Brush)bc.ConvertFromString(drawingAttributes.GetPropertyData(DrawAttributesGuid.BackgroundColor).ToString());
GeometryConverter gc = new GeometryConverter();
Geometry geometry = (Geometry)gc.ConvertFromString(string.Format("M {0},{1} {2},{3} {4},{5} Z", StylusPoints[0].X, StylusPoints[1].Y, (Math.Abs(StylusPoints[1].X - StylusPoints[0].X)) / 2 + StylusPoints[0].X, StylusPoints[0].Y, StylusPoints[1].X, StylusPoints[1].Y));
GeometryDrawing gd = new GeometryDrawing(BackGround, pen, geometry);
drawingContext.DrawDrawing(gd);
}
private ModernButton GetBackButton()
{
GeometryConverter geomConvert = new GeometryConverter();
Geometry iconData = (Geometry)geomConvert.ConvertFromString("F1 M 57,42L 57,34L 32.25,34L 42.25,24L 31.75,24L 17.75,38L 31.75,52L 42.25,52L 32.25,42L 57,42 Z ");
ModernButton buttonBack = new ModernButton();
buttonBack.EllipseDiameter = 30;
buttonBack.IconHeight = 20;
buttonBack.IconWidth = 20;
buttonBack.ToolTip = "Atrás";
buttonBack.IconData = iconData;
buttonBack.IsEnabled = false;
return(buttonBack);
}
/// <summary>
/// 绘制线
/// </summary>
/// <param name="point">数据</param>
public virtual void ShowLine(ObservableCollection <Point> points)
{
bool isFirstPoint = true;
Point lastPointPosition = new Point();//上一个点的位置
if (points != null)
{
foreach (Point point in points)
{
Ellipse p1 = new Ellipse();
p1.Height = 1;
p1.Width = 1;
p1.MaxHeight = 1;
p1.MaxWidth = 1;
p1.Fill = Brushes.Black;
//位置坐标对齐圆心所以要减去0.5
Point pointPosition = DataToPrintPoint(point, 0, 0);
//Canvas.SetLeft(p1, pointPosition.X);
//Canvas.SetBottom(p1, pointPosition.Y);
//ChartArea.DataArea.Children.Add(p1);
if (!isFirstPoint)
{
#region create method3
Path pp3 = new Path();
//pp3.Data
pp3.Stroke = new SolidColorBrush(Colors.Black);
pp3.StrokeThickness = 0.8;
GeometryConverter gc = new GeometryConverter();
pp3.Data = (Geometry)gc.ConvertFromString("M " + lastPointPosition.X + "," + lastPointPosition.Y + " " + pointPosition.X + "," + pointPosition.Y);
ChartArea.DataArea.Children.Add(pp3);
}
else
{
isFirstPoint = false;
}
#endregion
lastPointPosition = pointPosition;
}
}
}
void drawWidthPath(string strPath)
{
if (mazeWidthPath == null || gc2 == null)
{
mazeWidthPath = new Path();
gc2 = new GeometryConverter();
mazeWidthPath.Stroke = Brushes.Blue;
mazeWidthPath.StrokeThickness = 3;
Grid.SetRowSpan(mazeWidthPath, md.Height);
Grid.SetColumnSpan(mazeWidthPath, md.Width);
}
if (!gMaze.Children.Contains(mazeWidthPath))
{
gMaze.Children.Add(mazeWidthPath);
}
mazeWidthPath.Data = (Geometry)gc2.ConvertFromString(strPath);
}
private GeometryDrawing ConvertPath(XElement path)
{
var data = path.Attribute("d")?.Value;
if (geometryConverter.ConvertFromString(data) is Geometry geometry)
{
double.TryParse(path.Attribute("stroke-width")?.Value, out var strokeWidth);
var fill = GetColorBrush(path, "fill");
var stroke = GetColorBrush(path, "stroke");
var pen = stroke != null && strokeWidth > 0 ? new Pen(stroke, strokeWidth) : null;
return(new GeometryDrawing(fill, pen, geometry));
}
else
{
return(null);
}
}
void DrawLine(FrameworkElement element, Point newpoint)
{
double left, top, right, bottom;
if (element == null)
{
return;
}
double a1, a2, a3, a4, a5, a6;
a1 = grid.Margin.Left + grid.ActualWidth * 0.25;
a2 = grid.Margin.Top + grid.ActualHeight * 0.5;
a3 = newpoint.X;
a4 = newpoint.Y;
a5 = grid.Margin.Left + grid.ActualWidth * 0.75;
a6 = grid.Margin.Top + grid.ActualHeight * 0.5;
left = newpoint.X;
top = newpoint.Y;
right = this.ActualWidth - (left + element.ActualWidth);
bottom = this.ActualHeight - (top + element.ActualHeight);
if (bottom < 0)
{
path.Margin = new Thickness(path.Margin.Left, path.Margin.Top, path.Margin.Right, bottom);
}
if (right < 0)
{
path.Margin = new Thickness(path.Margin.Left, path.Margin.Top, right, path.Margin.Bottom);
}
element.Margin = new Thickness(left, top, right, bottom);
GeometryConverter gc = new GeometryConverter();
path.Data = (Geometry)gc.ConvertFromString(string.Format("M{0},{1} L{2},{3} L{4},{5}", a1, a2, a3, a4, a5, a6));
}
public void NewMethod()
{
//#region create method 1
//Path path = new Path();
//PathGeometry pathGeometry = new PathGeometry();
//PathFigure pathFigure = new PathFigure();
//pathFigure.StartPoint = new Point(400, 300);
//PathSegmentCollection segmentCollection = new PathSegmentCollection();
//segmentCollection.Add(new LineSegment() { Point = new Point(600, 100) });
//pathFigure.Segments = segmentCollection;
//pathGeometry.Figures = new PathFigureCollection() { pathFigure };
//path.Data = pathGeometry;
//path.Stroke = new SolidColorBrush(Colors.BlueViolet);
//path.StrokeThickness = 3;
//main.Children.Add(path);
//#endregion
//#region create method2
//Path pp = new Path();
//pp.Stroke = new SolidColorBrush(Colors.Blue);
//pp.StrokeThickness = 3;
//StreamGeometry geometry = new StreamGeometry();
//geometry.FillRule = FillRule.Nonzero; //声前F0还是F1,现在是F1
//using (StreamGeometryContext ctx = geometry.Open())
//{
// ctx.BeginFigure(new Point(30, 60), true, true);
// ctx.LineTo(new Point(150, 600), true, false);
//}
//geometry.Freeze();
//pp.Data = geometry;
//main.Children.Add(pp);
//#endregion
#region create method3
Path pp3 = new Path();
//pp3.Data
pp3.Stroke = new SolidColorBrush(Colors.Red);
pp3.StrokeThickness = 3;
GeometryConverter gc = new GeometryConverter();
pp3.Data = (Geometry)gc.ConvertFromString("M 20,30 500,100");
main.Children.Add(pp3);
#endregion
}
public void Connect()
{
Rect bb1 = new Rect(Start.GetShowItem().Margin.Left,
Start.GetShowItem().Margin.Top,
Start.GetShowItem().Width,
Start.GetShowItem().Height);
Rect bb2 = new Rect(End.GetShowItem().Margin.Left,
End.GetShowItem().Margin.Top,
End.GetShowItem().Width,
End.GetShowItem().Height);
Point[] p = new Point[] {
new Point {
X = bb1.X + bb1.Width / 2, Y = bb1.Y - 1
},
new Point {
X = bb1.X + bb1.Width / 2, Y = bb1.Y + bb1.Height + 1
},
new Point {
X = bb1.X - 1, Y = bb1.Y + bb1.Height / 2
},
new Point {
X = bb1.X + bb1.Width + 1, Y = bb1.Y + bb1.Height / 2
},
new Point {
X = bb2.X + bb2.Width / 2, Y = bb2.Y - 1
},
new Point {
X = bb2.X + bb2.Width / 2, Y = bb2.Y + bb2.Height + 1
},
new Point {
X = bb2.X - 1, Y = bb2.Y + bb2.Height / 2
},
new Point {
X = bb2.X + bb2.Width + 1, Y = bb2.Y + bb2.Height / 2
}
};
List <double> dis = new List <double>();
Dictionary <double, int[]> d = new Dictionary <double, int[]>();
for (int i = 0; i < 4; i++)
{
for (int j = 4; j < 8; j++)
{
double dx = Math.Abs(p[i].X - p[j].X),
dy = Math.Abs(p[i].Y - p[j].Y);
if ((i == j - 4) || (((i != 3 && j != 6) || p[i].X < p[j].X) && ((i != 2 && j != 7) || p[i].X > p[j].X) && ((i != 0 && j != 5) || p[i].Y > p[j].Y) && ((i != 1 && j != 4) || p[i].Y < p[j].Y)))
{
dis.Add(dx + dy);
d[dis[dis.Count - 1]] = new int[] { i, j };
}
}
}
int[] res = { 0, 4 };
if (dis.Count == 0)
{
res[0] = 0; res[1] = 4;
}
else
{
res = d[dis.Min()];
}
double x1 = p[res[0]].X,
y1 = p[res[0]].Y,
x4 = p[res[1]].X,
y4 = p[res[1]].Y;
double dx1 = Math.Max(Math.Abs(x1 - x4) / 2, 10),
dy1 = Math.Max(Math.Abs(y1 - y4) / 2, 10);
double x2 = (new double[] { x1, x1, x1 - dx1, x1 + dx1 })[res[0]],
y2 = (new double[] { y1 - dy1, y1 + dy1, y1, y1 })[res[0]],
x3 = (new double[] { 0, 0, 0, 0, x4, x4, x4 - dx1, x4 + dx1 })[res[1]],
y3 = (new double[] { 0, 0, 0, 0, y1 + dy1, y1 - dy1, y4, y4 })[res[1]];
string strPath = "M " + x1 + ", " + y1 + " C " + x2 + ", " + y2 + " " + x3 + ", " + y3 + " " + x4 + ", " + y4 + "";
//画箭头
double arr_angle = (30.0 / 180) * Math.PI;
double angle = Math.Atan((y3 - y4) / (x3 - x4));
if (angle == 0.0 && (x3 - x4) < 0)
{
angle = Math.PI;
}
double sin1 = Math.Sin(angle - arr_angle);
double cos1 = Math.Cos(angle - arr_angle);
double sin2 = Math.Sin(angle + arr_angle);
double cos2 = Math.Cos(angle + arr_angle);
double x5 = x4 + 10 * cos1,
y5 = y4 + 10 * sin1,
x6 = x4 + 10 * cos2,
y6 = y4 + 10 * sin2;
strPath += " L " + x5 + ", " + y5 + " M " + x4 + ", " + y4 + " L " + x6 + ", " + y6 + "";
//strPath += " L " + x5 + ", " + y5;
GeometryConverter gc = new GeometryConverter();
(Show_item as Path).Data = (Geometry)gc.ConvertFromString(strPath);
}
public void DynamicDraw(Point dest)
{
GeometryConverter gc = new GeometryConverter();
(Show_item as Path).Data = (Geometry)gc.ConvertFromString("M " + start_pt.X + "," + start_pt.Y + " " + dest.X + ", " + dest.Y);
}
