Trying To Create 3x3x3 Cube But Created 4x4x4 Instead In OpenGL

I am trying to create a 3d rubiks cube, however the dimensions are not aligning with the dimensions set. When I set the dimensions to 3 and create a 3x3x3 cube, I end up creating a

Solution 1:

It might look that way because your pieces are overlapping.

You create your pieces at distances of scale. If we visualize that in 1D, we get (s stands for scale):

          o         o         o  
           `-- s --´ `-- s --´ 

The pieces extend between pos - len and pos + len. You set len = scale. Hence, what you get is:

           ---------o--------- 
 ---------o--------- ---------o----------    
           `-- s --´ `-- s --´ 

To solve this, you should specify a length that is half the spacing. So, either:

cube[i][j][k] = Piece(2 * i * scale, 2 * j * scale, 2 * k * scale, scale)

or

cube[i][j][k] = Piece(i * scale, j * scale, k * scale, 0.5 * scale)