不能为我的泛型方法使用接口

Question

我有一小段代码正在遍历列表以检查重叠：

private List<INode> _nodes = new List<INode>();
private List<ISegment> _segments = new List<ISegment>();
public IReadOnlyList<INode> Nodes => _nodes;
public IReadOnlyList<ISegment> Segments => _segments;

private bool Overlaps<T>(ref Vector3 point, in IReadOnlyList<T> collection, out T obj) where T : INode, ISegment
{
    obj = default;
    for (int i = 0; i < collection.Count; i++)
    {
        if (collection[i].Overlaps(ref point))
            return true;
    }
    return false;
}
public bool Overlaps(ref Vector3 point, out INode node){
     return Overlaps(ref point, _nodes, out node);
}
public bool Overlaps(ref Vector3 point, out ISegment segment){
    return Overlaps(ref point, _segments, out segment);
}

通用方法只能接受两种类型，INode 或 ISegment，这是 where 子句的用途，但我收到此错误：

The type 'Graphs.INode' cannot be used as type parameter 'T' in the generic type or
method 'Graph.Overlaps<T>(ref Vector3, in IReadOnlyList<T>, out T)'. There is no
implicit reference conversion from 'Graphs.INode' to 'Graphs.ISegment'.

不确定我是否理解它认为我正在转换的原因，我在这里使用的 where 关键字有误吗？不确定如何让它工作。

接口定义：

public interface INode{
    bool Overlaps(ref Vector3 point);
}
public interface ISegment{
    bool Overlaps(ref Vector3 point);
}

Answer 1

where 关键字表示您的泛型类型必须实现 INode AND ISegment.

INode 和 ISegments 似乎具有相同的契约，您可以基于此构建接口继承。

public interface INode{
     bool Overlaps(ref Vector3 point);
}
public interface ISegment : INode { }
//OR
public interface ISegment {
     bool Overlaps(ref Vector3 point);
}
public interface INode : ISegment { }

更新

更好的方法是使用公共共享接口

public interface IOverlaps { 
    bool Overlaps(ref Vector3 point);
}
public interface INode : IOverlaps { }
public interface ISegment : IOverlaps { }

... where T : IOverlaps { ... }

不能为我的泛型方法使用接口

Cannot use interface for my generic method

c#

generics