public override bool ObjectInRectangle(Rectangle2D2 rect, ICanvasScreenConvertable canvasProxy, bool anyPoint)
{
if (rect == null)
{
throw new ArgumentNullException(nameof(rect));
}
if (Ellipse2D == null)
{
return(false);
}
//无论是否为任意选中,若包含了,则能够选中;
if (rect.Contains(Ellipse2D.Center) && rect.GetLines().All(p => p.Distance(Ellipse2D.Center) >= Ellipse2D.RadiusX))
{
return(true);
}
//若为任意点选中,矩形的四个顶点中,存在任意两点任意一点在椭圆内即可;
if (anyPoint && rect.GetLines().Any(p => {
var intersectPoints = Extension.IntersectWithLine(Ellipse2D, p);
return((intersectPoints?.Length ?? 0) != 0);
}))
{
return(rect.GetVertexes().Any(p => Ellipse2D.Contains(p)));
}
return(false);
}
/// <summary>
/// 绘制矩形;
/// </summary>
/// <param name="brush">填充颜色</param>
/// <param name="pen"></param>
/// <param name="rectangle"></param>
public void DrawRectangle(Rectangle2D2 rectangle, Brush brush, Pen pen)
{
if (rectangle == null)
{
throw new ArgumentNullException(nameof(rectangle));
}
ValidateDrawingContext();
DrawFill(rectangle.GetVertexes(), brush, pen);
}
/// <summary>
/// 以视图坐标为标准,绘制矩形;
/// </summary>
/// <param name="rectangle">以视图坐标为准的矩形</param>
/// <param name="brush">填充色</param>
/// <param name="pen">笔</param>
public void NativeDrawRectangle(Rectangle2D2 rectangle, Brush brush, Pen pen)
{
if (rectangle == null)
{
throw new ArgumentNullException(nameof(rectangle));
}
ValidateDrawingContext();
var vertexes = rectangle.GetVertexes();
NativeDrawFill(
vertexes.Select(p => Vector2DAdapter.ConvertToSystemPoint(p)),
BrushAdapter.ConvertToSystemBrush(brush),
PenAdapter.ConverterToSystemPen(pen)
);
}
