用Matlab三维网线图函数mesh绘制正方体

三维立体图如下：

             A'------------B'
            /|            /|
           / |           / |
          D'------------C' |
          |  |          |  |
          |  |          |  |
          |  A----------|--B
          | /           | /
          |/            |/
          D-------------C

表面展开如下：

             A'----------B'
             |           |
             |           |
             |           |
             |           |
  A'---------A-----------B----------B'---------A'
  |          |           |          |          |
  |          |           |          |          |
  |          |           |          |          |
  |          |           |          |          |
  D'---------D-----------C----------C'---------D'
             |           |
             |           |
             |           |
             |           |
             D'----------C'

 

根据Matlab三维mesh命令的要求，构造X，Y，Z并绘制，代码如下：

[X,Y]=meshgrid(0:1); X=[ nan X(1,:) nan nan X(:,1) X X(:,2) X(:,1) nan X(2,:) nan nan]; Y=[ nan Y(1,:) nan nan Y(:,1) Y Y(:,2) Y(:,1) nan Y(2,:) nan nan]; Z=ones(size(X)); Z(2:3,2:3)=0; mesh(X,Y,Z) axis equal axis off