// CLP.fe
// Fundamental region for Schoen's triply periodic minimal surface CLP
// generated from angle bracket spanner.

// Programmer: Ken Brakke, brakke@susqu.edu, http://www.susqu.edu

/* Commands:
   gogo - typical evolution
   showcube - full unit cell cube
   layer - 4 x 4 layer of unit cells
   transforms off - show just single fundamental region
   setcolor - to color one side yellow, as in my web page.

   To turn off showing all the edges in the graphics display,
      hit the "e" key in the graphics window.
*/


#define HT 1
#define WD 1

view_transform_generators 6
swap_colors
-1 0 0 0  // a: y axis
0 -1 0 0 
0 0 1 0
0 0 0 1

swap_colors
1 0 0 0  // b: top
0 -1 0 0 
0 0 -1 2*HT
0 0 0 1

swap_colors
-1 0 0 2*WD // c: front vert
0 -1 0  0
0 0 1 0
0 0 0 1

swap_colors
-1 0 0 2*WD  // d: front horiz
0 1 0 0
0 0 -1 0
0 0 0 1

swap_colors
1 0 0 0 // e: right flat
0 -1 0 2
0 0 -1 0 
0 0 0 1
 
swap_colors
-1 0 0 0  // f: y axis
0 1 0  0
0 0 -1 0 
0 0 0 1

vertices
1   0 0 0  fixed
2   0 0 HT fixed
3   WD 0 HT fixed
4   WD 0 0 fixed
5   WD 1 0 fixed
6   0  1 0 fixed

edges
1   1 2 fixed
2   2 3 fixed
3   3 4 fixed
4   4 5 fixed
5   5 6 fixed
6   6 1 fixed

faces
1   1 2 3 4 5 6

read
hessian_normal on;

// typical evolution, about as simple as it gets
gogo := { r; g 10; r; g 10; r; g 10; r; g 10; hessian;
        }

// command to show full cell in cube
showcube := { transform_expr "af"; transforms on;  show_trans "R"; }
	      }
layer := { transform_expr "dfecdeaf"; transforms on; show_trans "R"; }

// Set inside color to yellow
setcolor := { set facet backcolor yellow }