protected override void OnRenderCore(DrawingContext dc, RenderState state)
{
if (DataSource == null)
{
return;
}
if (Marker == null)
{
return;
}
var transform = Plotter2D.Viewport.Transform;
Rect bounds = Rect.Empty;
using (IPointEnumerator enumerator = DataSource.GetEnumerator(GetContext()))
{
Point point = new Point();
while (enumerator.MoveNext())
{
enumerator.GetCurrent(ref point);
enumerator.ApplyMappings(Marker);
//Point screenPoint = point.Transform(state.Visible, state.Output);
Point screenPoint = point.DataToScreen(transform);
bounds = Rect.Union(bounds, point);
Marker.Render(dc, screenPoint);
}
}
ContentBounds = bounds;
}
protected override void OnRenderCore(DrawingContext dc, RenderState state) {
// base.OnRenderCore
if (DataSource == null) return;
if (Marker == null) return;
var left = Viewport.Visible.Location.X;
var right = Viewport.Visible.Location.X + Viewport.Visible.Size.Width;
var top = Viewport.Visible.Location.Y;
var bottom = Viewport.Visible.Location.Y + Viewport.Visible.Size.Height;
var transform = Plotter2D.Viewport.Transform;
DataRect bounds = DataRect.Empty;
using (IPointEnumerator enumerator = DataSource.GetEnumerator(GetContext())) {
Point point = new Point();
while (enumerator.MoveNext()) {
enumerator.GetCurrent(ref point);
if (point.X >= left && point.X <= right && point.Y >= top && point.Y <= bottom)
{
enumerator.ApplyMappings(Marker);
Point screenPoint = point.DataToScreen(transform);
bounds = DataRect.Union(bounds, point);
Marker.Render(dc, screenPoint);
}
}
}
Viewport2D.SetContentBounds(this, bounds);
}
protected override void OnRenderCore(DrawingContext dc, RenderState state)
{
if (DataSource == null)
{
return;
}
var transform = Plotter2D.Viewport.Transform;
Rect bounds = Rect.Empty;
using (IPointEnumerator enumerator = DataSource.GetEnumerator(GetContext()))
{
Point point = new Point();
while (enumerator.MoveNext())
{
enumerator.GetCurrent(ref point);
enumerator.ApplyMappings(this);
Point zero = new Point(point.X, 0);
Point screenPoint = point.DataToScreen(transform);
Point screenZero = zero.DataToScreen(transform);
double height = screenPoint.Y = screenZero.Y;
height = (height >= 0) ? height : -height;
dc.DrawRectangle(Fill, new Pen(Stroke, StrokeThickness),
new Rect(screenPoint.X - BarWidth / 2, screenZero.Y, BarWidth, height));
bounds = Rect.Union(bounds, point);
}
}
ContentBounds = bounds;
}
protected override void OnRenderCore(DrawingContext dc, RenderState state)
{
if (DataSource == null)
{
markers.Clear();
canvas.Children.Clear();
return;
}
if (Marker == null)
{
return;
}
var transform = Viewport.Transform;
if (markers.Count == 0)
{
Rect bounds = Rect.Empty;
using (IPointEnumerator enumerator = DataSource.GetEnumerator(GetContext()))
{
Point point = new Point();
while (enumerator.MoveNext())
{
enumerator.GetCurrent(ref point);
enumerator.ApplyMappings(Marker);
Point screenPoint = point.DataToScreen(transform);
if (!screenPoint.IsFinite())
{
continue;
}
bounds = Rect.Union(bounds, point);
UIElement marker = Marker.CreateMarker();
Marker.SetPosition(marker, screenPoint);
// todo было раскомментировано. Сделать хранение маркеров и добавление их на плоттер.
canvas.Children.Add(marker);
markers.Add(marker);
}
}
ContentBounds = bounds;
}
else
{
int index = 0;
using (IPointEnumerator enumerator = DataSource.GetEnumerator(GetContext()))
{
Point point = new Point();
while (enumerator.MoveNext())
{
enumerator.GetCurrent(ref point);
Point screenPoint = point.DataToScreen(transform);
Marker.SetPosition(markers[index++], screenPoint);
}
}
}
}
protected override void OnRenderCore(DrawingContext dc, RenderState state)
{
if (Marker == null)
{
return;
}
if (DataSource == null) // No data is specified
{
if (canvas != null)
{
foreach (UIElement child in canvas.Children)
{
unused.Add(child);
}
canvas.Children.Clear();
}
}
else // There is some data
{
int index = 0;
var transform = GetTransform();
using (IPointEnumerator enumerator = DataSource.GetEnumerator(GetContext()))
{
Point point = new Point();
while (enumerator.MoveNext())
{
enumerator.GetCurrent(ref point);
enumerator.ApplyMappings(Marker);
if (index >= canvas.Children.Count)
{
UIElement newMarker;
if (unused.Count > 0)
{
newMarker = unused[unused.Count - 1];
unused.RemoveAt(unused.Count - 1);
}
else
{
newMarker = Marker.CreateMarker();
}
canvas.Children.Add(newMarker);
}
Marker.SetMarkerProperties(canvas.Children[index]);
Point screenPoint = point.DataToScreen(transform);
Marker.SetPosition(canvas.Children[index], screenPoint);
index++;
}
while (index < canvas.Children.Count)
{
unused.Add(canvas.Children[index]);
canvas.Children.RemoveAt(index);
}
}
}
}
public static IEnumerable <Point> GetPoints(IPointDataSource dataSource, DependencyObject context)
{
if (dataSource == null)
{
throw new ArgumentNullException("dataSource");
}
if (context == null)
{
context = Context.EmptyContext;
}
using (IPointEnumerator enumerator = dataSource.GetEnumerator(context))
{
Point p = new Point();
while (enumerator.MoveNext())
{
enumerator.GetCurrent(ref p);
yield return(p);
p = new Point();
}
}
}
public static IEnumerable <Point> GetPoints(IPointDataSource dataSource, DependencyObject context)
{
if (dataSource == null)
{
yield break;
}
if (context == null)
{
context = new DataSource2dContext();
}
using (IPointEnumerator enumerator = dataSource.GetEnumerator(context))
{
Point p = new Point();
while (enumerator.MoveNext())
{
enumerator.GetCurrent(ref p);
yield return(p);
p = new Point();
}
}
}
protected override void OnRenderCore(DrawingContext dc, RenderState state)
{
if (DataSource == null)
{
return;
}
if (Marker == null)
{
return;
}
if (Marker.markers == null)
{
return;
}
var transform = Plotter2D.Viewport.Transform;
DataRect bounds = DataRect.Empty;
IEnumerable <Point> ps = GetPoints();//实际值
List <Point> buf = new List <Point>(ps);
if (buf.Count < 1)
{
return;
}
double xstart = buf[0].X;
foreach (MarkersPoint mp in Marker.markers)
{
try
{
int idx = (int)((mp.x - xstart) / Step.len);
Point screenPoint = buf[idx].DataToScreen(transform);
bounds = DataRect.Union(bounds, buf[idx]);
Marker.Render(dc, screenPoint, mp);//画标记
}
catch (Exception ex)
{
return;
}
}
Viewport2D.SetContentBounds(this, bounds);
return;
using (IPointEnumerator enumerator = DataSource.GetEnumerator(GetContext()))
{
Point point = new Point();
int i = 0;
while (enumerator.MoveNext())
{
enumerator.GetCurrent(ref point);
if (!Marker.markers.Contains(new MarkersPoint {
x = (float)point.X
}))
{
continue;
}
enumerator.ApplyMappings(Marker);
i++;
MarkersPoint mp = Marker.markers[i - 1];
//Point screenPoint = point.Transform(state.Visible, state.Output);
Point screenPoint = point.DataToScreen(transform);
bounds = DataRect.Union(bounds, point);
Marker.Render(dc, screenPoint, mp); //画标记
}
}
Viewport2D.SetContentBounds(this, bounds);
}
