/// <summary>
/// 绘制某位置的选中状态(使用一个矩形);
/// </summary>
/// <param name="point"></param>
public static void DrawSelectedPointState(Vector2D point, ICanvas canvas, ICanvasScreenConvertable canvasProxy)
{
if (point == null)
{
throw new ArgumentNullException(nameof(point));
}
if (canvas == null)
{
throw new ArgumentNullException(nameof(canvas));
}
if (canvasProxy == null)
{
throw new ArgumentNullException(nameof(canvasProxy));
}
//得到以某点为中心的视图矩形;
var rect = NativeGeometryExtensions.GetNativeSuroundingScreenRect(
canvasProxy.ToScreen(point),
TolerantedScreenLength,
TolerantedScreenLength
);
canvas.NativeDrawRectangle(
rect,
HighLightRectColorBrush,
HighLightLinePen
);
}
/// <summary>
/// 判断视图坐标中某个位置是否在另一个位置的附近;
/// </summary>
/// <param name="screenPosition0"></param>
/// <param name="screenPosition1"></param>
/// <returns></returns>
public static bool GetIsSurround(Vector2D screenPosition0, Vector2D screenPosition1)
{
var screenRect = NativeGeometryExtensions.GetNativeSuroundingScreenRect(
screenPosition1,
TolerantedScreenLength,
TolerantedScreenLength
);
return(screenRect.Contains(screenPosition0));
}
