public override void Render(DrawingContext context, Rect viewRect, double zoom, Point leftTopPixel, bool isDarkTheme)
{
var pointCenter = Location.ToPixel(zoom);
if (!viewRect.IntersectsWith(new Rect(pointCenter - MarkerSize, pointCenter + MarkerSize)))
{
return;
}
var basePoint = (Point)(Location.ToPixel(zoom) - leftTopPixel);
context.DrawLine(CenterPen, basePoint - new Vector(5, 5), basePoint + new Vector(5, 5));
context.DrawLine(CenterPen, basePoint - new Vector(-5, 5), basePoint + new Vector(-5, 5));
if (zoom <= 6)
{
return;
}
if (cache == null || NeedUpdate || cachedZoom != zoom)
{
cache = GeometryGenerator.MakeCircleGeometry(Location, Distance, zoom, 30);
NeedUpdate = false;
cachedZoom = zoom;
}
if (cache == null)
{
return;
}
if (cache.Transform is not TranslateTransform tt)
{
cache.Transform = new TranslateTransform(-leftTopPixel.X, -leftTopPixel.Y);
}