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Some more unit tests for arc fitting

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This commit is contained in:
Alessandro Ranellucci 2014-04-06 22:32:53 +02:00
parent 1d35701f99
commit e4709068b9
2 changed files with 35 additions and 19 deletions
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35
lib/Slic3r/GCode/ArcFitting.pm
View file

@ -6,9 +6,10 @@ use Slic3r::Geometry qw(X Y PI scale unscale epsilon scaled_epsilon deg2rad angl
extends 'Slic3r::GCode::Reader';
has 'config' => (is => 'ro', required => 0);
has 'min_segments' => (is => 'rw', default => sub { 2 });
has 'max_angle' => (is => 'rw', default => sub { deg2rad(15) });
has 'len_epsilon' => (is => 'rw', default => sub { scale 0.1 });
has 'angle_epsilon' => (is => 'rw', default => sub { abs(deg2rad(1)) });
has 'min_total_angle' => (is => 'rw', default => sub { deg2rad(30) });
has 'max_relative_angle' => (is => 'rw', default => sub { deg2rad(15) });
has 'len_epsilon' => (is => 'rw', default => sub { scale 0.2 });
has 'angle_epsilon' => (is => 'rw', default => sub { abs(deg2rad(10)) });
has '_extrusion_axis' => (is => 'lazy');
has '_path' => (is => 'rw');
has '_cur_F' => (is => 'rw');
@ -131,22 +132,28 @@ sub detect_arcs {
# we need at least three points to check whether they form an arc
if ($i < $#points) {
my $len = $points[$i-1]->distance_to($points[$i]);
my $rel_angle = angle3points(@points[$i, $i-1, $i+1]);
for (my $j = $i+1; $j <= $#points; ++$j) {
# check whether @points[($i-1)..$j] form an arc
last if abs($points[$j-1]->distance_to($points[$j]) - $len) > $self->len_epsilon;
last if abs(angle3points(@points[$j-1, $j-2, $j]) - $rel_angle) > $self->angle_epsilon;
$end = $j;
my $rel_angle = PI - angle3points(@points[$i, $i-1, $i+1]);
if (abs($rel_angle) <= $self->max_relative_angle) {
for (my $j = $i+1; $j <= $#points; ++$j) {
# check whether @points[($i-1)..$j] form an arc
last if abs($points[$j-1]->distance_to($points[$j]) - $len) > $self->len_epsilon;
last if abs(PI - angle3points(@points[$j-1, $j-2, $j]) - $rel_angle) > $self->angle_epsilon;
$end = $j;
}
}
}
if (defined $end && ($end - $i + 1) >= $self->min_segments) {
push @chunks, polyline_to_arc(Slic3r::Polyline->new(@points[($i-1)..$end]));
my $arc = polyline_to_arc(Slic3r::Polyline->new(@points[($i-1)..$end]));
# continue scanning after arc points
$i = $end;
next;
if (1||$arc->angle >= $self->min_total_angle) {
push @chunks, $arc;
# continue scanning after arc points
$i = $end;
next;
}
}
# if last chunk was a polyline, append to it

19
t/arcs.t
View file

@ -2,7 +2,7 @@ use Test::More;
use strict;
use warnings;
plan tests => 20;
plan tests => 24;
BEGIN {
use FindBin;
@ -44,20 +44,27 @@ use Slic3r::Geometry qw(scaled_epsilon epsilon scale unscale X Y deg2rad);
}
}
exit;
#==========================================================
{
my $path = Slic3r::Polyline->new(
my $path = Slic3r::Polyline->new_scale(
[135322.42,26654.96], [187029.11,99546.23], [222515.14,92381.93], [258001.16,99546.23],
[286979.42,119083.91], [306517.1,148062.17], [313681.4,183548.2],
[306517.1,219034.23], [286979.42,248012.49], [258001.16,267550.17], [222515.14,274714.47],
[187029.11,267550.17], [158050.85,248012.49], [138513.17,219034.23], [131348.87,183548.2],
[86948.77,175149.09], [119825.35,100585],
);
$path->scale(1/10000);
my $af = Slic3r::GCode::ArcFitting->new;
if (0) {
require "Slic3r::SVG";
Slic3r::SVG::output(
"arc.svg",
polylines => [$path],
);
}
my $af = Slic3r::GCode::ArcFitting->new(max_relative_angle => deg2rad(30));
my @chunks = $af->detect_arcs($path);
is scalar(@chunks), 3, 'path collection now contains three paths';
@ -66,6 +73,8 @@ exit;
isa_ok $chunks[2], 'Slic3r::Polyline', 'third one is polyline';
}
exit;
#==========================================================
{