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dotSCAD/src/polyline2d.scad
2020-01-28 20:49:08 +08:00

50 lines
1.2 KiB
OpenSCAD

/**
* polyline2d.scad
*
* @copyright Justin Lin, 2017
* @license https://opensource.org/licenses/lgpl-3.0.html
*
* @see https://openhome.cc/eGossip/OpenSCAD/lib2x-polyline2d.html
*
**/
use <line2d.scad>;
module polyline2d(points, width, startingStyle = "CAP_SQUARE", endingStyle = "CAP_SQUARE") {
leng_pts = len(points);
s_styles = [startingStyle, "CAP_ROUND"];
e_styles = ["CAP_BUTT", endingStyle];
default_styles = ["CAP_BUTT", "CAP_ROUND"];
module line_segment(index) {
styles = index == 1 ? s_styles :
index == leng_pts - 1 ? e_styles :
default_styles;
p1 = points[index - 1];
p2 = points[index];
p1Style = styles[0];
p2Style = styles[1];
line2d(points[index - 1], points[index], width,
p1Style = p1Style, p2Style = p2Style);
// hook for testing
test_polyline2d_line_segment(index, p1, p2, width, p1Style, p2Style);
}
module polyline2d_inner(index) {
if(index < leng_pts) {
line_segment(index);
polyline2d_inner(index + 1);
}
}
polyline2d_inner(1);
}
// override it to test
module test_polyline2d_line_segment(index, point1, point2, width, p1Style, p2Style) {
}