c# - Applyonpoint 错误 1 ​​可访问性不一致：

Question

public Point2D ApplyOnPoint(Point2D point)
{
  return ApplyOnPoint(matrix, point);
 }

错误 1 ​​可访问性不一致：参数类型“hw4.Point2D”的可访问性低于方法“hw4.TransformationMatrix.ApplyOnPoint(hw4.Point2D)”G:\home\יסומים\hw4\hw4\TransformationMatrix.cs 49 24 hw4

Answer 1

它看起来Point2D不是一个public class. 看起来它应该是一个。

public Point2D
{
  ...