1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
package Slic3r::Geometry::Clipper;
use strict;
use warnings;
require Exporter;
our @ISA = qw(Exporter);
our @EXPORT_OK = qw(safety_offset offset offset_ex
diff_ex diff union_ex intersection_ex xor_ex PFT_EVENODD JT_MITER JT_ROUND
JT_SQUARE is_counter_clockwise);
use Math::Clipper 1.09 qw(:cliptypes :polyfilltypes :jointypes is_counter_clockwise area);
use Slic3r::Geometry qw(scale);
our $clipper = Math::Clipper->new;
sub safety_offset {
my ($polygons, $factor) = @_;
return Math::Clipper::offset($polygons, $factor || (scale 1e-05), 100000, JT_MITER, 2);
}
sub offset {
my ($polygons, $distance, $scale, $joinType, $miterLimit) = @_;
$scale ||= 100000;
$joinType = JT_MITER if !defined $joinType;
$miterLimit ||= 2;
my $offsets = Math::Clipper::offset($polygons, $distance, $scale, $joinType, $miterLimit);
return @$offsets;
}
sub offset_ex {
# offset polygons and then apply holes to the right contours
return @{ union_ex([ offset(@_) ]) };
}
sub diff_ex {
my ($subject, $clip, $safety_offset) = @_;
$clipper->clear;
$clipper->add_subject_polygons($subject);
$clipper->add_clip_polygons($safety_offset ? safety_offset($clip) : $clip);
return [
map Slic3r::ExPolygon->new($_),
@{ $clipper->ex_execute(CT_DIFFERENCE, PFT_NONZERO, PFT_NONZERO) },
];
}
sub diff {
return [ map @$_, diff_ex(@_) ];
}
sub union_ex {
my ($polygons, $jointype, $safety_offset) = @_;
$jointype = PFT_NONZERO unless defined $jointype;
$clipper->clear;
$clipper->add_subject_polygons($safety_offset ? safety_offset($polygons) : $polygons);
return [
map Slic3r::ExPolygon->new($_),
@{ $clipper->ex_execute(CT_UNION, $jointype, $jointype) },
];
}
sub intersection_ex {
my ($subject, $clip, $jointype, $safety_offset) = @_;
$jointype = PFT_NONZERO unless defined $jointype;
$clipper->clear;
$clipper->add_subject_polygons($subject);
$clipper->add_clip_polygons($safety_offset ? safety_offset($clip) : $clip);
return [
map Slic3r::ExPolygon->new($_),
@{ $clipper->ex_execute(CT_INTERSECTION, $jointype, $jointype) },
];
}
sub xor_ex {
my ($subject, $clip, $jointype) = @_;
$jointype = PFT_NONZERO unless defined $jointype;
$clipper->clear;
$clipper->add_subject_polygons($subject);
$clipper->add_clip_polygons($clip);
return [
map Slic3r::ExPolygon->new($_),
@{ $clipper->ex_execute(CT_XOR, $jointype, $jointype) },
];
}
1;
|
