1  /**
 2  * rounded_square.scad
 3  *
 4  * @copyright Justin Lin, 2017
 5  * @license https://opensource.org/licenses/lgpl-3.0.html
 6  *
 7  * @see https://openhome.cc/eGossip/OpenSCAD/lib3x-rounded_square.html
 8  *
 9  **/
10  
11  use <__comm__/__trapezium.scad>
12  
13  module rounded_square(size, corner_r, center = false) {
14      is_flt = is_num(size);
15      x = is_flt ? size : size.x;
16      y = is_flt ? size : size.y;       
17      
18      position = center ? [0, 0] : [x / 2, y / 2];
19      points = __trapezium(
20          length = x, 
21          h = y, 
22          round_r = corner_r
23      );
24  
25      translate(position) 
26          polygon(points);
27  
28      // hook for testing
29      test_rounded_square(position, points);
30  }
31  
32  // override it to test
33  module test_rounded_square(position, points) {
34  }