private Task SetCLines()
{
return(Task.Run(() =>
{
var rt = new RotateTransform(90); rt.Freeze();
var Points = new List <Point>();
if (CursorIndent == 0)
{
Points.Add(new Point(CursorArea, 0));
Points.Add(new Point(4096, 0));
}
else
{
double s = CursorArea;
while (s < 4096)
{
Points.Add(new Point(s, 0)); s += CursorDash;
Points.Add(new Point(s, 0)); s += CursorIndent;
}
}
Dispatcher.Invoke(() =>
{
using var dcCH = CursorLinesVisual.RenderOpen();
for (int i = 0; i < Points.Count; i += 2)
{
dcCH.DrawLine(LinesPen, Points[i], Points[i + 1]);
}
dcCH.PushTransform(rt);
for (int i = 0; i < Points.Count; i += 2)
{
dcCH.DrawLine(LinesPen, Points[i], Points[i + 1]);
}
dcCH.PushTransform(rt);
for (int i = 0; i < Points.Count; i += 2)
{
dcCH.DrawLine(LinesPen, Points[i], Points[i + 1]);
}
dcCH.PushTransform(rt);
for (int i = 0; i < Points.Count; i += 2)
{
dcCH.DrawLine(LinesPen, Points[i], Points[i + 1]);
}
});
SetCursor(CurrentCursor);
}));
}
public void Rotate(real x, real y, real Alpha)
{
if (PointOutside.Check(ref x, ref y))
{
return;
}
RotateTransform rt = new RotateTransform();
rt.Angle = -Alpha;
rt.CenterX = x;
rt.CenterY = y;
if (rt.CanFreeze)
{
rt.Freeze();
}
FCanvas.PushTransform(rt);
GraphicsSave[GraphicsSave.Count - 1]++;
}
protected override void OnRender(DrawingContext dc)
{
base.OnRender(dc);
if (drawing == null)
{
drawing = GetDrawing();
if (drawing == null)
{
return;
}
}
var cellSize = CellSize;
var rotate = new RotateTransform(-(int)Cell.Direction * 45, cellSize / 2, cellSize / 2);
rotate.Freeze();
dc.PushTransform(rotate);
dc.DrawDrawing(drawing);
dc.Pop();
// 防止鼠标事件穿透
dc.DrawRectangle(Brushes.Transparent, null, new Rect(new Size(cellSize, cellSize)));
}
public override void Draw(DrawingContext dc)
{
if (StaticLoopFigures.Count > 0)
{
return;
}
var width = Width.CachedValue.AsDouble;
var height = Height.CachedValue.AsDouble;
var len = Math.Sqrt(width * width + height * height);
var angle = Math.Atan2(height, width);
FigureText.FormattedText.MaxTextWidth = len;
FigureText.FormattedText.SetForegroundBrush(FigureColor.Brush);
var x = X.CachedValue.AsDouble;
var y = Y.CachedValue.AsDouble;
var t = new RotateTransform(angle * 180.0 / Math.PI, x, y);
t.Freeze();
dc.PushTransform(t);
dc.DrawText(FigureText.FormattedText, new Point(x, y - FigureText.FormattedText.Height));
dc.Pop();
}
