/
11_clipper.t
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/
11_clipper.t
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#!/usr/bin/perl
use strict;
use warnings;
use Slic3r::XS;
use Test::More tests => 19;
my $square = Slic3r::Polygon->new( # ccw
[200, 100],
[200, 200],
[100, 200],
[100, 100],
);
my $hole_in_square = Slic3r::Polygon->new( # cw
[160, 140],
[140, 140],
[140, 160],
[160, 160],
);
my $expolygon = Slic3r::ExPolygon->new($square, $hole_in_square);
{
my $result = Slic3r::Geometry::Clipper::offset([ $square, $hole_in_square ], 5);
is_deeply [ map $_->pp, @$result ], [ [
[205, 205],
[95, 205],
[95, 95],
[205, 95],
], [
[145, 145],
[145, 155],
[155, 155],
[155, 145],
] ], 'offset';
}
{
my $result = Slic3r::Geometry::Clipper::offset_ex([ @$expolygon ], 5);
is_deeply $result->[0]->pp, [ [
[205, 205],
[95, 205],
[95, 95],
[205, 95],
], [
[145, 145],
[145, 155],
[155, 155],
[155, 145],
] ], 'offset_ex';
}
{
my $result = Slic3r::Geometry::Clipper::offset2_ex([ @$expolygon ], 5, -2);
is_deeply $result->[0]->pp, [ [
[203, 203],
[97, 203],
[97, 97],
[203, 97],
], [
[143, 143],
[143, 157],
[157, 157],
[157, 143],
] ], 'offset2_ex';
}
{
my $expolygon2 = Slic3r::ExPolygon->new([
[20000000, 20000000],
[0, 20000000],
[0, 0],
[20000000, 0],
], [
[5000000, 15000000],
[15000000, 15000000],
[15000000, 5000000],
[5000000, 5000000],
]);
my $result = Slic3r::Geometry::Clipper::offset2_ex([ @$expolygon2 ], -1, +1);
is $result->[0]->area, $expolygon2->area, 'offset2_ex';
}
{
my $polygon1 = Slic3r::Polygon->new(@$square);
my $polygon2 = Slic3r::Polygon->new(reverse @$hole_in_square);
my $result = Slic3r::Geometry::Clipper::diff_ex([$polygon1], [$polygon2]);
is $result->[0]->area, $expolygon->area, 'diff_ex';
}
{
my $polyline = Slic3r::Polyline->new([50,150], [300,150]);
{
my $result = Slic3r::Geometry::Clipper::intersection_pl([$polyline], [$square, $hole_in_square]);
is scalar(@$result), 2, 'intersection_pl - correct number of result lines';
# results are in no particular order
is scalar(grep $_->length == 40, @$result), 2, 'intersection_pl - result lines have correct length';
}
{
my $result = Slic3r::Geometry::Clipper::diff_pl([$polyline], [$square, $hole_in_square]);
is scalar(@$result), 3, 'diff_pl - correct number of result lines';
# results are in no particular order
is scalar(grep $_->length == 50, @$result), 1, 'diff_pl - the left result line has correct length';
is scalar(grep $_->length == 100, @$result), 1, 'diff_pl - two right result line has correct length';
is scalar(grep $_->length == 20, @$result), 1, 'diff_pl - the central result line has correct length';
}
}
if (0) { # Clipper does not preserve polyline orientation
my $polyline = Slic3r::Polyline->new([50,150], [300,150]);
my $result = Slic3r::Geometry::Clipper::intersection_pl([$polyline], [$square]);
is scalar(@$result), 1, 'intersection_pl - correct number of result lines';
is_deeply $result->[0]->pp, [[100,150], [200,150]], 'clipped line orientation is preserved';
}
if (0) { # Clipper does not preserve polyline orientation
my $polyline = Slic3r::Polyline->new([300,150], [50,150]);
my $result = Slic3r::Geometry::Clipper::intersection_pl([$polyline], [$square]);
is scalar(@$result), 1, 'intersection_pl - correct number of result lines';
is_deeply $result->[0]->pp, [[200,150], [100,150]], 'clipped line orientation is preserved';
}
if (0) { # Clipper does not preserve polyline orientation
my $result = Slic3r::Geometry::Clipper::intersection_ppl([$hole_in_square], [$square]);
is_deeply $result->[0]->pp, $hole_in_square->split_at_first_point->pp,
'intersection_ppl - clipping cw polygon as polyline preserves winding order';
}
{
my $square2 = $square->clone;
$square2->translate(50,50);
{
my $result = Slic3r::Geometry::Clipper::intersection_ppl([$square2], [$square]);
is scalar(@$result), 1, 'intersection_ppl - result contains a single line';
is scalar(@{$result->[0]}), 3, 'intersection_ppl - result contains expected number of points';
# Clipper does not preserve polyline orientation so we only check the middle point
###ok $result->[0][0]->coincides_with(Slic3r::Point->new(150,200)), 'intersection_ppl - expected point order';
ok $result->[0][1]->coincides_with(Slic3r::Point->new(150,150)), 'intersection_ppl - expected point order';
###ok $result->[0][2]->coincides_with(Slic3r::Point->new(200,150)), 'intersection_ppl - expected point order';
}
}
{
my $square2 = $square->clone;
$square2->reverse;
$square2->translate(50,50);
{
my $result = Slic3r::Geometry::Clipper::intersection_ppl([$square2], [$square]);
is scalar(@$result), 1, 'intersection_ppl - result contains a single line';
is scalar(@{$result->[0]}), 3, 'intersection_ppl - result contains expected number of points';
# Clipper does not preserve polyline orientation so we only check the middle point
###ok $result->[0][0]->coincides_with(Slic3r::Point->new(200,150)), 'intersection_ppl - expected point order';
ok $result->[0][1]->coincides_with(Slic3r::Point->new(150,150)), 'intersection_ppl - expected point order';
###ok $result->[0][2]->coincides_with(Slic3r::Point->new(150,200)), 'intersection_ppl - expected point order';
}
}
{
my $subject = Slic3r::Polyline->new(
[44735000,31936670],[55270000,31936670],[55270000,25270000],[74730000,25270000],[74730000,44730000],[68063296,44730000],[68063296,55270000],[74730000,55270000],[74730000,74730000],[55270000,74730000],[55270000,68063296],[44730000,68063296],[44730000,74730000],[25270000,74730000],[25270000,55270000],[31936670,55270000],[31936670,44730000],[25270000,44730000],[25270000,25270000],[44730000,25270000],[44730000,31936670]
);
my $clip = [
Slic3r::Polygon->new([75200000,45200000],[54800000,45200000],[54800000,24800000],[75200000,24800000]),
];
my $result = Slic3r::Geometry::Clipper::intersection_pl([$subject], $clip);
is scalar(@$result), 1, 'intersection_pl - result is not empty';
}
{
my $subject = Slic3r::Polygon->new(
[44730000,31936670],[55270000,31936670],[55270000,25270000],[74730000,25270000],[74730000,44730000],[68063296,44730000],[68063296,55270000],[74730000,55270000],[74730000,74730000],[55270000,74730000],[55270000,68063296],[44730000,68063296],[44730000,74730000],[25270000,74730000],[25270000,55270000],[31936670,55270000],[31936670,44730000],[25270000,44730000],[25270000,25270000],[44730000,25270000]
);
my $clip = [
Slic3r::Polygon->new([75200000,45200000],[54800000,45200000],[54800000,24800000],[75200000,24800000]),
];
my $result = Slic3r::Geometry::Clipper::intersection_ppl([$subject], $clip);
is scalar(@$result), 1, 'intersection_ppl - result is not empty';
}
__END__