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Use Clipper for line clipping

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This commit is contained in:
Alessandro Ranellucci 2013-11-21 14:15:38 +01:00
parent 1d6a18071a
commit 3025c77675
20 changed files with 202 additions and 211 deletions
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78
t/polyclip.t
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@ -2,7 +2,7 @@ use Test::More;
use strict;
use warnings;
plan tests => 24;
plan tests => 23;
BEGIN {
use FindBin;
@ -31,24 +31,6 @@ my $square = Slic3r::Polygon->new( # ccw
my $line = Slic3r::Line->new([50, 150], [300, 150]);
my $intersection = Slic3r::Geometry::clip_segment_polygon($line, $square);
is_deeply $intersection, [ [100, 150], [200, 150] ], 'line is clipped to square';
#==========================================================
$intersection = Slic3r::Geometry::clip_segment_polygon(Slic3r::Line->new([0, 150], [80, 150]), $square);
is $intersection, undef, 'external lines are ignored 1';
#==========================================================
$intersection = Slic3r::Geometry::clip_segment_polygon(Slic3r::Line->new([300, 150], [400, 150]), $square);
is $intersection, undef, 'external lines are ignored 2';
#==========================================================
$intersection = Slic3r::Geometry::clip_segment_polygon(Slic3r::Line->new([120, 120], [180, 160]), $square);
is_deeply $intersection, [ [120, 120], [180, 160] ], 'internal lines are preserved';
#==========================================================
{
@ -64,42 +46,38 @@ is_deeply $intersection, [ [120, 120], [180, 160] ], 'internal lines are preserv
is $expolygon->encloses_point(Slic3r::Point->new(140, 150)), 1, 'point on hole contour is recognized';
is $expolygon->encloses_point(Slic3r::Point->new(140, 140)), 1, 'point on hole corner is recognized';
{
my $intersections = $expolygon->clip_line(Slic3r::Line->new([150,180], [150,150]));
is_deeply [ map $_->pp, @$intersections ], [
[ [150, 180], [150, 160] ],
], 'line is clipped to square with hole';
my $intersection = $expolygon->clip_line(Slic3r::Line->new([150,180], [150,150]));
is $intersection->[0]->length, Slic3r::Line->new([150, 180], [150, 160])->length,
'line is clipped to square with hole';
}
{
my $intersections = $expolygon->clip_line(Slic3r::Line->new([150,150], [150,120]));
is_deeply [ map $_->pp, @$intersections ], [
[ [150, 140], [150, 120] ],
], 'line is clipped to square with hole';
my $intersection = $expolygon->clip_line(Slic3r::Line->new([150,150], [150,120]));
is $intersection->[0]->length, Slic3r::Line->new([150, 140], [150, 120])->length,
'line is clipped to square with hole';
}
{
my $intersections = $expolygon->clip_line(Slic3r::Line->new([120,180], [180,180]));
is_deeply [ map $_->pp, @$intersections ], [
[ [120,180], [180,180] ],
], 'line is clipped to square with hole';
my $intersection = $expolygon->clip_line(Slic3r::Line->new([120,180], [180,180]));
is $intersection->[0]->length, Slic3r::Line->new([120,180], [180,180])->length,
'line is clipped to square with hole';
}
{
my $intersections = $expolygon->clip_line($line);
is_deeply [ map $_->pp, @$intersections ], [
[ [100, 150], [140, 150] ],
[ [160, 150], [200, 150] ],
], 'line is clipped to square with hole';
my $intersection = $expolygon->clip_line($line);
is $intersection->[0]->length, Slic3r::Line->new([100, 150], [140, 150])->length,
'line is clipped to square with hole';
is $intersection->[1]->length, Slic3r::Line->new([160, 150], [200, 150])->length,
'line is clipped to square with hole';
}
{
my $intersections = $expolygon->clip_line(Slic3r::Line->new(reverse @$line));
is_deeply [ map $_->pp, @$intersections ], [
[ [200, 150], [160, 150] ],
[ [140, 150], [100, 150] ],
], 'reverse line is clipped to square with hole';
my $intersection = $expolygon->clip_line(Slic3r::Line->new(reverse @$line));
is $intersection->[0]->length, Slic3r::Line->new([200, 150], [160, 150])->length,
'reverse line is clipped to square with hole';
is $intersection->[1]->length, Slic3r::Line->new([140, 150], [100, 150])->length,
'reverse line is clipped to square with hole';
}
{
my $intersections = $expolygon->clip_line(Slic3r::Line->new([100,180], [200,180]));
is_deeply [ map $_->pp, @$intersections ], [
[ [100, 180], [200, 180] ],
], 'tangent line is clipped to square with hole';
my $intersection = $expolygon->clip_line(Slic3r::Line->new([100,180], [200,180]));
is $intersection->[0]->length, Slic3r::Line->new([100,180], [200,180])->length,
'tangent line is clipped to square with hole';
}
{
my $polyline = Slic3r::Polyline->new([50, 180], [250, 180], [250, 150], [150, 150], [150, 120], [120, 120], [120, 50]);
@ -141,11 +119,11 @@ is_deeply $intersection, [ [120, 120], [180, 160] ], 'internal lines are preserv
my $expolygon = Slic3r::ExPolygon->new($large_circle, $small_circle);
$line = Slic3r::Line->new_scale([152.742,288.086671142818], [152.742,34.166466971035]);
my $intersections = $expolygon->clip_line($line);
is_deeply [ map $_->pp, @$intersections ], [
[ [152742000, 288086661], [152742000, 215178843], ],
[ [152742000, 108087507], [152742000, 35166477] ],
], 'line is clipped to square with hole';
my $intersection = $expolygon->clip_line($line);
is $intersection->[0]->length, Slic3r::Line->new([152742000, 288086661], [152742000, 215178843])->length,
'line is clipped to square with hole';
is $intersection->[1]->length, Slic3r::Line->new([152742000, 108087507], [152742000, 35166477])->length,
'line is clipped to square with hole';
}
#==========================================================