BPA.SingleDevice/BPA.UIControl/Converters/GetCanvasCentreConverter.cs

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;

namespace BPA.UIControl.Converters
{
    /// <summary>
    /// 获取 Canvas 中心点
    /// </summary>
    public class GetCanvasCentreConverter : IMultiValueConverter
    {
        /// <inheritdoc/>
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            return ((double)values[0] - (double)values[1]) / 2;
        }

        /// <inheritdoc/>
        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            return null;
        }
    }
}