1  use <unittest.scad>
 2  use <contours.scad>
 3  
 4  module test_contours() {
 5      echo("==== test_contours  ====");
 6  
 7      min_value =  1;
 8      max_value = 360;
 9      resolution = 10;
10  
11      function f(x, y) = sin(x) * cos(y) * 30;
12  
13      points = [
14          for(y = [min_value:resolution:max_value])
15              [
16                  for(x = [min_value:resolution:max_value]) 
17                      [x, y, f(x, y)]
18              ]
19      ];
20  
21      assertEqualPoints([[21, 89.9963, 0], [31, 89.9963, 0]], contours(points, 0)[10]);
22      assertEqualPoints( [[11, 31], [11, 41], [1, 41], [1, 31]], contours(points, [0, 5])[10]);
23  }
24  
25  test_contours();