1  /**
 2  * polyline3d.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-polyline3d.html
 8  *
 9  **/
10  
11  use <line3d.scad>
12  
13  module polyline3d(points, diameter, startingStyle = "CAP_CIRCLE", endingStyle = "CAP_CIRCLE") {
14      leng_pts = len(points);
15      
16      s_styles = [startingStyle, "CAP_BUTT"];
17      e_styles = ["CAP_SPHERE", endingStyle];
18      default_styles = ["CAP_SPHERE", "CAP_BUTT"];
19  
20      module line_segment(index) {
21          styles = index == 1 ? s_styles : 
22                   index == leng_pts - 1 ? e_styles : 
23                   default_styles;
24  
25          p1 = points[index - 1];
26          p2 = points[index];
27          p1Style = styles[0];
28          p2Style = styles[1];        
29          
30          line3d(p1, p2, diameter, 
31                 p1Style = p1Style, p2Style = p2Style);       
32      }
33  
34      if(leng_pts == 2) {
35          line3d(points[0], points[1], diameter, startingStyle, endingStyle);
36      }
37      else {
38          for(i = [1:leng_pts - 1]) {
39              line_segment(i);
40          }
41      }
42  }